Final report Machine for removal of anti-personnel mines MV-4 6 attachments with 2 additional attachments

Transcription

1 Date 2 Eng.Rgmt. Code :61217 Page 1 (2) ARMED FORCES Göta Engineer Regiment Pages to be sent Your official post, official Your date Your reference Project Manager for mech. equipment, G Danielsson :60486 Our official post, official Our previous date Our previous reference Unit for development, test dept. Tommy Karlsson, Final report Machine for removal of anti-personnel mines MV-4 6 attachments with 2 additional attachments Purpose The results of testing will be used for needs of modification and development as well as for acheiving TTEM (Tactical Technical Economic Goal) and for working out specifications of the demands for a serial acquisition of the entire system. Tests and their execution The 2 nd Engineer regiment during the Autumn of 2002 carried out testing with the MV-4 anti-personnel mine clearing machine at the request of SWEDEC according to the testing plan for testing of machines for destruction of antipersonnel mines with the reference number :60 486, and RUTTEM (updated TTEM) for the SYSTEM FOR REMOVAL OF ANTI-PERSONNEL MINES 1/ Testing included testing of: Ability to destroy mines when the machine destroys test mines corresponding to anti-personnel pressure mines (AP), fragmentation mines (PMR 2) and bouncing mines (PROM 1) in various configurations of terrain in the trial polygon. Ability to demine in vegetation with bushes and underbrush with interlaced twigs on the fields. Ability to demine in various climbs and descents. Ability to maneuver and the machines capacity with the remote control. Dynamic demining and testing of activating explosions. Transport system. Postadress Telefon Telefax Postgiro E-post Box vx exp@ing2.mil.se EKSJÖ

2 FÖRSVARSMAKTEN GÖTA INGENJÖRREGEMENTE Date 2nd Engineer Rgmt. Code :61217 Page 2(2) Certain modifications to the demining tool have already been carried out. Summary The MV-4 anti-personnel mine clearing machine in the initial execution did not fulfill the established requirements with regard to the automatic following of terrain contours. A modification of the clearing unit was carried out. After this the machine can fulfill all requirements of ground treatment according to RUTTEM for DESTRUCTION OF ANTI-PERSONNEL MINES that are taken into account in the plan for testing of the destruction of anti-personnel mines. The ability to neutralize test mines (PMA 2) with a depth of the mine of from 0 to 10 cm on the test polygon is 98.3%, the obligatory requirement of depth for destruction of mines is 10 cm. The profiles of removal of mines demonstrated that the machine can effectively destroy mines to a depth of cm on all configurations of terrain. Overview of contents Attachment 1 Ability to demine on the test polygons. Sub-Enclosure Record of testing. Attachment 2 Dynamic demining and testing of activating explosions. Attachment 3 Ability to demine in vegetation. Attachment 4 Ability to demine/maneuvering. Attachment 5 Passing ability/ability to maneuver. Attachment 6 Report on recommendations for modifications and shortcomings discovered Sub-Enclosure Daily log. Stephan Horste A/CO Unit for Development Pages for Sending SWEDEC For Orientation HQ War Materiel for Swedish Army (attn: Lt. Col. Nygren) Center Expertise/Weapons, Explosives & Mine Tech. (attn: Daniel Arvidsson) For orientation within 2 nd Eng.Rgmt. Regiment HQ (attn: Maj. Nyberg) Unit for Development CO

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4 Attachment 1, 2nd Eng.Rgt. Page 1 (6) Demining ability on test courses General Demining machine The MV-4 machine for destruction of AP mines did not in succeed in the original execution on the test course. For this reason modifications were made for the working tool to be able to follow the surface. A valve was mounted for constant pressure on the hydraulic pistons of the lifting mechanism (on the working tool) in order to reduce its own weight on the surface. The roller was replaced with modified skis. The tests were conducted with these modifications and the machine did not show any deficiencies with regard to following the surface. Testing managers Lt Tommy Karlsson Kn Peter Djerf Testing department 2 nd Eng. Rgt. Testing department 2 nd Eng. Rgt. Period Testing was conducted in the period to Location Testing was carried out on the testing location N Kulla Equipment utilized during testing Body test mine PMA2 Fuse mine m/49b Test mine bouncing/trip wire, PROM-1 Test mine fragmentation, PMR-2 Fuse mine PROM-1 adapted Metal detector (Vallon) Equipment for placing mines Material for deactivating UXO Personal protection equipment Cargo vehicle for transporting earth Vibrating ground tamper Agricultural tractor Isotope gauge for measuring explosive filling level Various agricultural tools C:\DOK-ING\kosta\attachment_1.doc

5 Attachment 1, 2nd Eng.Rgt. Page 2 (6) Mine body and fuse Test mine bouncing/fragmentation w/ fuse Soil conditions Surface ground layer Course 1 Degree of compression: ca 85 % of max. Sand Course 2 Degree of compression: ca 90 % of max. Natural gravel Course 3 Degree of compression: ca 94 % of max. Execution Working plan: The actual course was prepared to avoid the presence of any electricity conducting material (no false mine detection signals). Mines were placed according to various systems and at various depths according to the testing plan. Fragmentation (bouncing) test mines Fragmentation (bouncing) test mine/trip wire The machine destroys placed mines. The testing manager observes testing and keeps a log on the number of detonations as well as time needed for destruction. The testing manager locates remains of destroyed mine bodies and neutralizes unexploded explosive. Review results of destruction. C:\DOK-ING\kosta\attachment_1.doc

6 Attachment 1, 2nd Eng.Rgt. Page 3 (6) Evaluation. Putting test course in order. Grades/judgments The testing mine body with sharp fuse m/49b in other words with PROM fuse with explosive (nails, gunpowder) is used so that it will show itself when the mine is detonated. The PMA test body has a metal plate in order to confirm that status of the mine after destruction. Judgment according to principles: Detonated, damaged and separated, are judged to be destroyed (inactivated). Mines that are missed and unaffected ones are judged to be not destroyed (removed). Judgment of results of destruction is made according to the following: Damaged, the mine is damaged so that it is not able to operate. Separated, > 50 % of explosive present, fuse separated, mine not functional. Unaffected, the mine is completely functional after removal. In photo: Separated mine In photo: Damaged mine C:\DOK-ING\kosta\attachment_1.doc

7 Attachment 1, 2nd Eng.Rgt. Page 4 (6) Result Summary of results Test mine PMA2 The machine gave the following results at mine depths of from 0 to 10 cm: Test mine PMA2 Number placed: 300 Detonated: 282 Damaged: 7 Separated: 6 Destroyed: Total 295 Unaffected 5 Clearing ability in % 98.3 The machine gives the following results with mine depths of 0, 10 and 15 cm: Test mine PMA2 Number placed: 450 Detonated: 378 Damaged: 20 Separated: 12 Destroyed: Total 410 Unaffected: 40 Clearing ability in % 91.1 C:\DOK-ING\kosta\attachment_1.doc

8 Attachment 1, 2nd Eng.Rgt. Page 5 (6) Test mine bouncing, trip wire (PROM-1) Test mine bouncing-w/trip wire Test mine bouncing-w/o trip wire Number placed: Detonated: Damaged: 0 0 Destroyed: Total Unaffected: 0 0 Clearing ability in % Test mine fragmenting (PMR-2) Test mine fragmenting-w/trip wire Test mine bouncing-w/o trip wire Number placed: Detonated: Damaged: 0 0 Damaged: Total Unaffected: 0 0 Clearing ability in % C:\DOK-ING\kosta\attachment_1.doc

9 Attachment 1, 2nd Eng.Rgt. Page 6 (6) Discussion With all trials 28 % of power was utilized, which suits a speed of 360 m/h. When during testing material gathered in the tracks, the machine turned uncontrollably to the side. This is because the hydraulic motors have too little turning moment at low RPM. The photos show the profile of clearing on the trial course of gravel Conclusions The machine meets all requirements with regard to clearing abilities. The machine satisfies requirements set for clearing to a depth of 10 cm in all types of ground. The maximum depth of clearance with maintaining clearing effects on the earthen course is cm with an appropriate speed of 360 m/h, for sand and gravel courses it is16-17 cm. C:\DOK-ING\kosta\attachment_1.doc

10 Testing of dynamic mine removal and testing by blast Attachment 2, 2nd Eng. Rgmt. Page 1 (4) During testing, high-speed filming was also carried out and organized by the Verification and Validation Center of the Swedish Army Explosion testing PROM 1 Testing managers Lt Tommy Karlsson From testing department Eng. 2 Kn Peter Djerf From testing department Eng. 2 Execution Testing was carried out on in the location of Vittingen on the firing range, Ränneslätt. For carrying out the testing a path was constructed on the explosion site. The machine was placed on the path with the flail activated to clear gravel and stone so that it would not affect the mine while testing. The mine was placed on a platform 300 mm above the ground and at some distance in front of the rotating flail. The mine was activated with electrical detonator kit no. 4 and electric fuse that had been placed in the body of the mine. After detonation damage was inspected to the demining tool and the machine and eventual damage was assessed. PROM 1 Equipment utilized during testing and auxiliary equipment: PROM mine Stock numbers El. fuse no. 5 M El. activation kit no. 4 M Material for placing mines Weather conditions Cloudy, snow falling, - 6 C, light wind. C:\DOK-ING\kosta\attachment_2.doc

11 Attachment 2, 2nd Eng. Rgmt. Page 2 (4) Path construction The path was constructed from gravel 0-18, with a width of 3 m and height of 0.3 m. Damage to the machine 3 chains with hammers were damaged. Some damage from shrapnel to the flail axle. Some damage from shrapnel to the plate of the flail tool. Photo shows damage from shrapnel to the steel plate of the flail tool Photo shows damaged chains on the demining flail tool. Result of testing with PROM explosive Damage to the machine was not to such a degree as to halt work. No reduction in function was detected due to damage. The damaged chains were replaced so as to not reduce or worsen the demining effect. Conclusions The possibility cannot be excluded of more serious damage causing a decrease in function with the detonation of fragmenting mines. It was judged that the machine was again ready for work after damage inspection and replacement of 3 chains. The estimated time for this is around 30 minutes. Testing of destruction of anti-personnel mines During testing, high-speed filming was also carried out and organized by the Verification and Validation Center of the Swedish Army. Testing observers Lt Tommy Karlsson Kn Peter Djerf From testing dept. of 2 nd Eng. Rgmt. From testing dept. of 2 nd Eng. Rgmt C:\DOK-ING\kosta\attachment_2.doc

12 Attachment 2, 2nd Eng. Rgmt. Page 3 (4) Execution Testing was carried out on 12 and 13 November 2002 on the location of Vittingen on the firing range Ränneslätt. For conducting testing a path was constructed on the location of gravel The machine clears the path course with placed and prepared AP mines 10, that were buried at ground level, the place was marked in order to provide orientation as to when the demining tool passed over a mine. After a mine is detonated, or after a marked line is crossed, the machine stops, it is inspected and possible damage is assessed. During testing 3 mine units were activated by the demining tool and 1 by a ski, of the rest of the mines 3 were damaged and 1 separated, all were judged to be destroyed. When the demining tool hits the body of a mine, it destroys the mechanism for activating the mine which is made of plastic that cannot sustain hard blows. In order for the tool for removing mines to cause an explosion of the mine, it must hit the detonator. With separated mines the procedure is the same as with explosive remains, of three damaged, one was removed with the explosive plate, and with the two other ones a detonation was induced through pressure on the detonator with the hoe of a construction machine, the mines were detonated because there detonators were broken. Equipment utilized during testing and auxiliary equipment: Anti-personnel mines no. 10 M El. detonator no. 5 M El. fuses no. 4 M Detonation putty no. 46 M Protected construction machine with earth hoe Equipment for demining (Amröjutrustning) Material for placing mines Weather conditions Cloudy, snow falling, - 6 C, light wind Cloudy, - 1 C, light wind. Construction of the path The path was constructed of gravel 0-18, with a width of 3 m and height of 0.3 m. Damage to the machine No damage to the machine was observed after 3 units of detonated AP mines (Truppmina10) when the clearing tool activated a mine. Upon detonation of mines under the skis, no deformation of the skis was caused, or halting of work. C:\DOK-ING\kosta\attachment_2.doc

13 Attachment 2, 2nd Eng. Rgmt. Page 4 (4) No damage after 3 detonations Ski damaged by direct detonation Result of testing of detonation of AP mine (Truppmina 10) Given that the AP mine (truppmina 10) has a small weight of explosive material and does not fragment, it did not cause damage to the machine because the greater part of the detonation passes freely through the tool. Conclusions Upon detonation of an AP mine that does not fragment, no damage is caused. For this reason there is no need to inspect damage to the machine after detonation of this type of mine. The equipment for following the surface must follow the cleared path. C:\DOK-ING\kosta\attachment_2.doc

14 Attachment 3, 2nd Eng. Rgt. Page 1 (2) Ability to destroy mines in vegetation General Information Testing was conducted in a vegetation covered meadow with average stem thickness of 3 cm. Cleaning profile and depth was confirmed with the help of a buried 3 mm thick board. Equipment utilized during testing Digger EL 70 with hook mounted for breaking frozen ground. 3 mm thick board, cut into pieces 30 cm wide. Measuring compass Shovel and steel bar Tape measure 50 m Testing managers: Lt Tommy Karlsson Kn Peter Djerf Execution Testing was carried out on the firing range Ränneslätt by Hamnaryd. A vegetation covered meadow consisted of bushes with average thickness of 3 cm. Into this ground structure was buried a board with the top end at ground level. It was possible to record the machine s clearing profile with the help of the broken board. Weight of the flail tool on the ground was 350 kg. This suits a constant pressure of 50 bar. Clearing speed during testing was 430 m/h. Clearing profile on board Note: Buskar is bushes Time utilized: The test was conducted in one day C:\DOK-ING\kosta\attachment_3.doc

15 Attachment 3, 2nd Eng. Rgt. Page 2 (2) Description of testing area Ground conditions/terrain, diagrams/photographs Burried board Summary / Conclusions The machine cleared vegetation well and maintained a depth of 10 cm in the buried board. Constant pressure must be reduced for the working tool to increase its own weight, if it does not increase during demining of dense and thick woods. For the tool to follow ground contours, skis or wheels must be made to move over the cleared path. Photo shows depth of clearing at end of path. C:\DOK-ING\kosta\attachment_3.doc

16 Attachment 4, 2nd Eng Rgt Page 1 (3) Mine destruction ability/maneuvering ability General information Equipment utilized during testing. Adjustable inclination meter (Slant 100) Tape measure Board of 3 mm cut into 30 mm wide pieces Shovel and steel bar Paint for marking Testing managers Lt Tommy Karlsson Kn Peter Djerf Description of testing area Ground conditions/terrain, photographs In photo: Clearing laterally on slope In photo: Clearing down a slope In photo: Clearing next to straight vertical surface In photo: Clearing an uphill slope C:\DOK-ING\kosta\attachment_4.doc

17 Attachment 4, 2nd Eng Rgt Page 2 (3) In photo: Testing of clearing capacity Trials of clearing uphill and downhill and laterally on a slope The trial was carried out on a vegetation covered meadow. The machine can clear on uphill and downhill slopes with such moving ability as to permit changes in direction, and can ensure clearance to a depth of All of this is possible on up to 35º incline. The testing showed that it is more simple to carry out clearance of mines uphill because the operator has a better view up rather than downhill, and built up material more easily leaves the working tool. With lateral clearing on slopes, the greatest inclination is 20º. With steeper inclinations the machine slips to the side with which the working tool together with the tracks is either partially or completely outside the clearing course. It is difficult for the operator to discover and corrugate direction changes, such that the machine does not slip to the side. The best way to clear mines laterally on a slope is to start such that the cleared surface is located on the side that is downhill from the machine. These results and assertions are made under the conditions that on the machine are made modifications with regard to constant pressure for following the ground. In photo: Difficulties when machine slips. In photo: Clearing profile on uphill slope C:\DOK-ING\kosta\attachment_4.doc

18 Attachment 4, 2nd Eng Rgt Page 3 (3) Capacity of mine clearance The test was carried out on a meadow in N Kulla, with the machine clearing a surface 50 x 50 m with a depth of cm and unified clearing profile. The surface was cleared from right to left such that the machine came back over the cleared surface. The operator drove the machine from a place 50 m from the testing area, moving about in phases together with moving the machine to the side so that he would the entire time be directly behind it. Driving forward during clearing was constantly in 2 nd speed, while driving backwards in speeds 4-5. The buried board verified the profile and depth of clearing. The test surface was cleared with the requirement set of 3 hours and 10 min. Clearance width was 1.5 m, but taking into account overlap of the width of one drive track during clearing, the actual width of clearing is m in each direction. When driving in this way, the same track always moves in the cleared mass two time because of which the track unit fills the upper side of the chassis with rock, soil, and similar. This all moves together with the track and impedes driving and the machine moves uncontrollably. In photo: Blocked drive track In photo: Depth of demining and profile Clearance of mines close to obstacles The machine can destroy mines next to straight vertical surfaces up to 0.25 m. In photo: Demining laterally next to obstacle In photo: Demining with obstacle in front 0.25 m 0.70m C:\DOK-ING\kosta\attachment_4.doc

19 Attachment 5, 2nd Eng. Rgt. Page 1 (4) Passing ability/maneuverability General information Equipment utilized during testing. Scania LB 8X8 mine and fragment protected truck Adjustable slope measurer (Slant 100). Tape measure Binoculars for distance measurement (Nikon Laser 800) Steel reinforced oak board 30x30 cm Ditch 1.5 x 0.5 m Testing managers Lt Tommy Karlsson Kn Peter Djerf Description of testing site Ground/Terrain conditions, photo. In photo: overcoming obstacle 30x30 cm In photo: passing over ditch 1.5x0.5 In photo: Overcoming uphill slope In photo: Lateral driving on slope

20 Attachment 5, 2nd Eng. Rgt. Page 2 (4) In photo: driving in water Passing over ditches The machine can pass over ditches forward and backward. If the extended clearing tool is utilized as support or for distribution of weight, the depth of the ditch is unimportant. Passing over 1.5m wide ditch without touching bottom Overcoming obstacles The machine can overcome obstacles 30x30 cm forward and backward, in order to achieve a smooth and controlled passing, the flail tool is used as counterweight. The center of gravity of the machine with a raised flail tool is in line with the second of the forward support wheels and that together with the relatively small diameter of the tension wheel, prevents the machine without assistance of the working tool from overcoming vertical obstacles of over 30 cm.

21 Attachment 5, 2nd Eng. Rgt. Page 3 (4) Center of gravity In photo: Overcoming obstacle 30x30 cm Overcoming slopes Driving uphill on slopes is possible on a maximum of 58º incline, after which the drive tracks lose traction. While driving downhill, the machine can overcome in a controlled fashion downhill slopes of up to 50º incline, and can stop and change direction. The machine has the ability to laterally drive on slopes with the possibility of adjusting direction, and that the machine does not slip is up to 35º incline. These percentages are valid under the condition that the ground is flat (meadow). In photo: Lateral driving on slope 35º Driving in water The greatest depth for driving in water is 45 cm, this is the depth at which the fan for cooling the machine comes into contact with water.

22 Attachment 5, 2nd Eng. Rgt. Page 4 (4) Steam from the turbine's fan In photo: Driving in water at a depth of 45 cm. Measuring the range of the remote control unit The testing was carried out on level terrain with the operator inside and outside the fragment protected vehicle, with varying transmitting power in the remote control unit. With power output over 40%, interference occurs between the remote control unit and the machine and this regardless of the distance. Testing was interrupted with a power output of 36% given that this was completely adequate and exceeds requirements set. Power output Protected vehicle Outside protected vehicle 24% of maximum power 250 m range 390 m range 36% of maximum power 600 m range 1000 m range Transportability & set-up time The MV-4 demining machine can be transported in a container on a hook lift fitted vehicle with a ramp and can then be ready for use within 6 minutes of arrival.

23 Attachment 6 2nd Eng Rgt. Page 1 (1) Review of recommendations for modifications and shortcomings discovered of the MV-4 Recommended modifications Constant pressure on the + side of the lifting pistons of the flail tool. Changing of the planet gear to low speed. Replace the roller with 2 support wheels. Self-cleaning angle of the track base, different angle of the top portion of the track chassis Support frame for the engine hatch. Manual pump for extracting oil from the motor during oil changes. Protective cover over hydraulic hoses in the flail tool and greasing points on the housing of the tool shaft bearing The connection for the filter of the hydraulic tank should be above the tank. Glass to show the level in the hydraulic fluid tank. Adjustable Perkins electronic RPM meter. Tanks for fuel and hydraulic fluid should be made of steel plate. Bypass on the drive motor to enable towing. Trimpotentiometer for drive synchronization. Holes for drainage lacking in boxes on the chassis. The hole for drainage is mistakenly placed on the bottom plate. Shortcomings discovered Adding of hydraulic fluid should be done through a filter and non-leaking connection. Ventilation of the hydraulic tank should be done through a breathing filter. Welding seams on the hammers are of poor quality. The large bolts on the flail tool should be changed to a quality of The wire cutter is made of too thin/weak material. The hole for draining of coolant is too small in diameter. Electrical schematics lacking in technical manual for remote control and other equipment. The handbook for service and handling is inadequate. The flail descends too quickly. The signal for low fuel level engages too early. Paint on the machine falls off, the machine does not have a prime coat. Regulation of the motor does not function at higher RPM. Markings for hydraulic components are falling off. Protection against wear on the hydraulic hoses is inadequate. The fastening of the tanks for fuel and hydraulic fluid is inadequate. Poor quality locks on the hatches/openings on the side. Maximum emitting power of the transmitter 36 %. Phosphorescent paint should be put on the rear of the machine. The protective grid over the instrument panel hits the ignition key. Eye hooks missing for lifting machine with crane. Antenna base should be protected (lowered). Flashing for the warning light. Sticker to warn of dangerous area. High wear on the hammers and chains is the quality adequate? C:\DOK-ING\kosta\attachment_6.doc

24 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 TESTING AP MINES, TEST PROTOCOL Type of Machine MV-4 Manufacturer DOK-ING Date Weather Cloudy Temperature 0 Description / Depth of Placement Earthen Course 0 cm Structure Earth Degree of soil compression 84.1 Percentage of water 11.5 Clearance Depth cm Time / 25m 5.17 Clearance Speed 283 m/h Test Mine 1 Test Mine Trip wire Bouncing Test Mine Trip wire Fragment. Quantity placed: 50 Trip wire Mech. Trip wire Mech. Detonated: 44 Damaged: 5 Separated: 1 Destroyed: Total: 50 Undamaged: 0 Clearing in % 100 Comments: Separated fuses model 49 (live fuses): 6 pieces of which 1 piece damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Spreading to the side: 2 pieces of fuse 1.5 m from the cleared course Other: Roller 200 Kg, 28 % of power. The machine cannot automatically maintain depth with the roller. C:\DOK-ING\kosta\sub-enclosure_1.doc 1 (13)

25 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Cloudy Temperature 0 Description / Depth of Placement Earthen Course 10 cm Structure Earth Degree of soil compression 84.0 Percentage of water 11.3 Clearance Depth 0-20 cm Time / 25 m 4 min 40 sec Clearance Speed 326 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Quantity placed 50 Trip wire Mech. Trip wire Mech. Detonated 31 Damaged 4 Separated: 3 Destroyed: Total 38 Undamaged: 12 Clearing in % 76 C:\DOK-ING\kosta\sub-enclosure_1.doc 2 (13)

26 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Comments: Separated fuses model 49 (live fuses): 7 pieces of which 2 pieces damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: 1 piece 2 m to the side and 1 piece 5 m in front of the cleared course. Other: Power 28 %, roller 200 Kg. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Cloudy Temperature 0 Description / Depth of Placement Earthen Course 10 cm Structure Earth Degree of soil compression Percentage of water 9.95 Clearance Depth cm Time 25 m 7 min 44 sec Clearance Speed 196 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Quantity placed: 50 Trip wire Mech. Trip wire Mech. Detonated: 48 Damaged: 0 Separated: 0 Destroyed: Total 48 Undamaged 2 Clearing in % 96 C:\DOK-ING\kosta\sub-enclosure_1.doc 3 (13)

27 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Comments: Separated fuses model 49 (live fuses): 0 pieces of which pieces damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: Other: Power 24 %, skis 230 Kg. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Sunny Temperature +4 Description / Depth of Placement Earthen Course 15 cm Structure Earth Degree of soil compression Percentage of water 13.1 Clearance Depth cm Time / 25m 3 min 23sec Clearance Speed 454 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Quantity placed: 50 Trip wire Mech. Trip wire Mech. Detonated: 7 Damaged: 8 Separated: 4 Destroyed: Total 19 Undamaged: 31 Clearing in % 38 C:\DOK-ING\kosta\sub-enclosure_1.doc 4 (13)

28 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Comments: Separated fuses model 49 (live fuses): 4 pieces of which 1 piece damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: 1 piece 2 m to the side of the cleared course. Other: Power 28 %, skis 350 Kg. 80 % of the cleared course cm Clearance Depth. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Sleet Temperature +2 Description / Depth of Placement Gravel course 0 cm Structure Gravel Degree of soil compression Percentage of water 5.9 Clearance Depth 17 cm Time / 25m 4 min 37sec Clearance Speed 328 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Quantity placed: 50 Trip wire Mech. Trip wire Mech. Detonated: 43 Damaged: 1 Separated: 4 Destroyed: Total 48 Undamaged 2 Clearing in % 96 C:\DOK-ING\kosta\sub-enclosure_1.doc 5 (13)

29 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Comments: Separated fuses model 49 (live fuses): 4 pieces of which 1 piece damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: Other: Power 28 %, skis 310 Kg. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather: Sleet Temperature +2 Description / Depth of Placement Gravel course 10 cm Structure Gravel Degree of soil compression Percentage of water 5.8 Clearance Depth 17 cm Time / 25m 4 min 15sec Clearance Speed 352 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Quantity placed: 50 Trip wire Mech. Trip wire Mech. Detonated: 50 Damaged: 0 Separated: 0 Destroyed: Total: 50 Undamaged: 0 C:\DOK-ING\kosta\sub-enclosure_1.doc 6 (13)

30 Clearing in % 100 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Comments: Separated fuses model 49 (live fuses): 0 pieces of which pieces damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: Other: Power 28 %, skis 310 Kg. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Sleet Temperature +2 Description / Depth of Placement Gravel course 15 cm Structure Gravel Degree of soil compression Percentage of water 5.35 Clearance Depth 17 cm Time / 25m 5 min 17 sec Clearance Speed 283 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Quantity placed: 50 Trip wire Mech. Trip wire Mech. Detonated: 44 Damaged: 2 Separated: 0 Destroyed: Total: 46 Undamaged: 4 C:\DOK-ING\kosta\sub-enclosure_1.doc 7 (13)

31 Clearing in % 92 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Comments: Separated fuses model 49 (live fuses): 1 piece of which pieces damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: Other: Power 28 %, skis 310 Kg. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Cloudy Temperature +4 Description / Depth of Placement Sandy course 0 cm Structure Sandy Degree of soil compression 92.5 Percentage of water 3.6 Clearance Depth 12 cm Time / 25m 3 min 15sec Clearance Speed 465 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Quantity placed: 50 Trip wire Mech. Trip wire Mech. Detonated: 48 Damaged: 1 Separated: 1 Destroyed: Total 50 Undamaged: 0 C:\DOK-ING\kosta\sub-enclosure_1.doc 8 (13)

32 Clearing in % 100 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Comments: Separated fuses model 49 (live fuses): 1 piece of which 1 piece damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: Other: Power 28 %, skis 210 Kg. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Cloudy Temperature +4 Description / Depth of Placement Sandy course 10 cm Structure Sandy Degree of soil compression Percentage of water 3.4 Clearance Depth 17 cm Time / 25m 3 min 17sec Clearance Speed 465 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Quantity placed: 50 Trip wire Mech. Trip wire Mech. Detonated: 49 Damaged: 0 Separated: 0 Destroyed: Total: 49 Undamaged: 1 C:\DOK-ING\kosta\sub-enclosure_1.doc 9 (13)

33 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Clearing in % 98 Comments: Separated fuses model 49 (live fuses): 0 pieces of which pieces damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: Other: Power 28 %, skis 310 Kg. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Sleet Temperature +2 Description / Depth of Placement Sandy course 15 cm Structure Sand Degree of soil compression Percentage of water 6.1 Clearance Depth 17 cm Time / 25m 4 min 40sec Clearance Speed 326 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Quantity placed: 50 Trip wire Mech. Trip wire Mech. Detonated: 45 Damaged: 4 Separated: 2 Destroyed: Total: 50 C:\DOK-ING\kosta\sub-enclosure_1.doc 10 (13)

34 Undamaged: 0 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Clearing in % 100 Comments: Separated fuses model 49 (live fuses): 2 pieces of which 2 pieces damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: Other: Power 28 %, skis 310 Kg. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Sunny Temperature +10 Description / Depth of Placement Sandy course cm Structure Sand Degree of soil compression Percentage of water 6.89 Clearance Depth 12 cm Time / 25m 3 min 50 sec Clearance Speed 395 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Trip Mech. Trip Mech. wire wire Quantity placed: Detonated: Damaged: Separated: Destroyed: Total: C:\DOK-ING\kosta\sub-enclosure_1.doc 11 (13)

35 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Undamaged: Clearing in % Comments: Separated fuses model 49 (live fuses): pieces of which pieces damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: Other: Power 28 %, skis 310 Kg. RECORD OF TESTING AP MINES Type of Machine MV-4 Manufacturer DOK-ING Date Weather Sunny Temperature +10 Description / Depth of Placement Gravel course cm Structure Gravel Degree of soil compression 96.3 Percentage water 6.73 Clearance Depth 12 cm Time / 25m 5 min 05 sec Clearance Speed 294 m/h Test mine 1 Test mine Trip wire Bouncing Test mine Trip wire Fragment. Trip Mech. Trip Mech. wire wire Quantity placed: Detonated: Damaged: Separated: C:\DOK-ING\kosta\sub-enclosure_1.doc 12 (13)

36 Sub-Enclosure 1 Attachment 1 2nd Eng. Rgmt , ;61217 Destroyed: Total: Undamaged: Clearing in % Comments: Separated fuses model 49 (live fuses): pieces of which pieces damaged Separated fuses Trip wire: pieces of which pieces damaged Result Test-mine: 100 % (number of detonations+separated+undamaged+damaged) Result Test-mine trip wire Bouncing: % Result Test-mine trip wire Fragmentation: % Dispersed to the side: Other: Power 28 %, skis 310 Kg. C:\DOK-ING\kosta\sub-enclosure_1.doc 13 (13)

37 Sub-enclosure of Attachment 6 2nd Eng. Rgt. Daily log MV-4 Date: Hour counter Start: 2 Finish: 4 Number: 2 Driving/Testing: Clearing of meadow, education of testing manager. Location: Norra Kulla Weather: Sunny Temp: + 25 C Symptoms of errors Leaking of hydraulic couplings. Replacement of O-ring in coupling. Leaking of the connector of the filter on the hydraulic tank. Replacement of gasket. Maintenance/supervision Other/modifications The hydraulic reverse filter should be mounted on the upper side of the hydraulic tank, and the mounting connection made of higher quality. It should be possible to read the level of hydraulic fluid through glass for reading the level. The hydraulic tank should be equipped with special ventilation and with a filling cap that is completely sealed. C:\DOK-ING\kosta\sub-enclosure_1_attachment_6.doc

38 Sub-enclosure of Attachment 6 2nd Eng. Rgt. Daily log MV-4 Date: Hour counter Start: 4 Finish: 6 Number: 2 Driving/Testing: Clearing of meadow, education of testing manager Location: Norra Kulla Weather: Sunny Temp: + 25 C Symptoms of errors Fuel filters clogged Maintenance/supervision: Replacement of fuel filters, cleaning of fuel tank Cleaning by blowing of the air filter, tightening of transmission chains. Other/modifications: Tanks for fuel and hydraulic fluid were not cleaned after production. Tanks should be constructed of steel plate because of possible repairs. C:\DOK-ING\kosta\sub-enclosure_1_attachment_6.doc

39 Sub-enclosure of Attachment 6 2nd Eng. Rgt. Daily log MV-4 Date: Hour counter Start: 6 Finish: 9 Number: 3 Driving/Testing: Clearing of test course, education Location: Norra Kulla Weather: Sunny Temp: + 25 C Symptoms of errors Difficult to start warm motor. Maintenance/supervision: Filling of fuel, checking oil level Other/modifications: The audio signal for fuel level warns too early of low fuel, while the tank is still half full. C:\DOK-ING\kosta\sub-enclosure_1_attachment_6.doc

40 Sub-enclosure of Attachment 6 2nd Eng. Rgt. Daily log MV-4 Date: Hour counter Start: 9 Finish: 10 Number: 1 Driving/Testing: Clearing of test course, education Location: Norra Kulla Weather: Sunny Temp: + 20 C Symptoms of errors Cannot automatically follow the course. Difficult to start warm motor. Maintenance/supervision: Cleaning of air filter. Other/modifications: C:\DOK-ING\kosta\sub-enclosure_1_attachment_6.doc

41 Sub-enclosure of Attachment 6 2nd Eng. Rgt. Daily log MV-4 Date: Hour counter Start: 10 Finish: 11.5 Number: 1.5 Driving/Testing: Education of testing manager Location: Norra Kulla Weather: Sunny Temp: + 25 C Symptoms of errors Motor cannot be started at temperatures greater than 60 C. Leaking at the filter fastening on the hydraulic tank. Maintenance/supervision: Tightening of tracks and wheels. Other/modifications: While cooling the injection pump, it is possible to start engine (10 liters of cold water on the injection pump). C:\DOK-ING\kosta\sub-enclosure_1_attachment_6.doc

42 Sub-enclosure of Attachment 6 2nd Eng. Rgt. Daily log MV-4 Date: Hour counter Start: 11.5 Finish: 13 Number: 1.5 Driving/Testing: Education of testing manager Location: Norra Kulla Weather: Sunny Temp: + 22 C Symptoms of errors The engine is noisy at full RPM and remains so when the regulator is activated. Maintenance/supervision:. Other/modifications: Welding of a track for the O-ring for fastening the hydraulic fluid filter Installation of cooling for diesel oil Try to grease injection pump with 2% double-stroke oil. Mounted cooling for oil C:\DOK-ING\kosta\sub-enclosure_1_attachment_6.doc

43 Sub-enclosure of Attachment 6 2nd Eng. Rgt. Daily log MV-4 Date: Hour counter Start: 13 Finish: 16 Number: 3 Driving/Testing: Education of testing manager, Testing of modifications Location: Norra Kulla Weather: Sunny Temp: + 25 C Symptoms of errors Warm motor still starts with difficult despite mixing of oil in the diesel. The wire cutter on the flail axle is damaged. 75 % of the welding seams of the chains are damaged. Maintenance/supervision: Tightening of all bolts on the demining flail tool. Other/modifications: Wire cutters should be of stronger material. Seams of the chain welds must be higher quality. Damaged weld seam C:\DOK-ING\kosta\sub-enclosure_1_attachment_6.doc

44 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 16 Finish: 18 Number: 2 Driving/Testing: Measuring of RPM of the flail axle at various engine RPM. Location: Test hall Weather: Sunny Temp: + 22 C Symptoms of errors: Maintenance/supervision: Changing of motor oil to 5W-30 with the reference number M Other/Modifications: The motor is turning at RPM according to the RPM meter???????. With motor at 1700 RPM. With motor at 2000 RPM. 60 % pump oil flow flail axle turns at 400 RPM flail axle turns at 450 RPM 80 % -: : :- 100 % -: : :- Mounting of pump for waste oil while changing oil. Pump for waste oil

45 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 18 Finish: 22 Number: 4 Driving/Testing: Clearing of path for demining dogs. Location: Testing course N Soåsen Weather: Sunny Temp: + 20 C Symptoms of errors Bolts for fastening chains onto the flail axle extensive damage. The hole in the chassis for plug on the bottom of the radiator is too small. Maintenance/supervision: Changing of motor oil 051 reference no. M Replacement of coolant with antifreeze for 30 C Replacement of filter for hydraulic fluid. Other/Modifications: Bolts mounted for chains and hammers of 12.9 quality. Welding failed

46 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 22 Finish: 26.5 Number: 4.5 Driving/Testing: Driving on the test course Location: N Kulla Weather: Sunny Temp: + 24 C Symptoms of errors Machine does not satisfy set requirements with regard to following surface. Maintenance/supervision: Changing of all demining tools Washing of the machine Checking and adjusting tension on the drive tracks Other/Modifications: Signal for alerting of low fuel level activates already when tank is half empty. The roller for following ground contours pushes the demined mass forward, the result of which is that it loses its ability to follow ground contours. Cleared earth

47 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 26,5 Finish: 29 Number: 2,5 Driving/Testing: Demining meadow, education Location: N Kulla Weather: Sunny Temp: + 20 C Symptoms of errors: Losing hammers because the hammer bolts are worn out. Maintenance/supervision: Washing of the machine Other/Modifications: Hole drilled for drainage in the battery compartment.

48 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 29 Finish: 30 Number: 1 Driving/Testing: Demonstration of the machine Location: FMV Stockholm Weather: Sunny Temp: + 20 C Symptoms of errors: Maintenance/supervision: Other/Modifications:

49 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 30 Finish: 31 Number: 1 Driving/Testing: Repair of injection pump Location: Skänninge Weather: Sunny Temp: + 20 C Symptoms of errors Difficult starting of warm engine. Maintenance/supervision: Polishing of pistons in the injection pump, two showed signs of wear. Other/Modifications: According to the manufacturer Perkins, Malte Månsson, the machine should be equipped with electrical adjustable RPM..

50 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 31 Finish: 34 Number: 3 Driving/Testing: Testing of the polished injection pumps Location: N Kulla Weather: Sunny Temp: + 12 C Symptoms of errors Difficult starting of warm motor still present. Maintenance/supervision: Other/Modifications: Added and mixed the additive Red-Line to diesel fuel.

51 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 34 Finish: 38 Number: 4 Driving/Testing: Obstacles, ditch, driving through water according to testing plan. Location: N Kulla i Bjälmen Weather: Cloudy Temp: + 10 C Symptoms of errors Difficult starting of warm motor still present. Maintenance/supervision: Washing of machine and tightening of bolts Other/Modifications: The machine satisfies the set requirements according to RUTTEM.

52 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 38 Finish: 40 Number: 2 Driving/Testing: Driving and demining on a meadow according to testing plan. Location: N Kulla i Hamnaryd Weather: Sunny Temp: + 10 C Symptoms of errors Difficult starting of warm motor still present. Motor hums when the electronic RPM meter is activated. Maintenance/supervision: Changing of air filter Other/modifications: The machine satisfies all set requirements according to RUTTEM

53 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 40 Finish: 44 Number: 4 Driving/Testing: Driving and demining on the test course with mounted constant pressure. Location: N Kulla Weather: Cloudy Temp: + 10 C Symptoms of errors Driving with constant pressure is a clear improvement with regard to following terrain contours, for the machine to satisfy requirements in this regard, it was necessary to dismount the roller. Maintenance/supervision: Other/Modifications: Constant pressure was installed on the plus (+) side of the pistons for lifting the working tool. With the possibility of adjustment of constant pressure to bar, the weight of the working tool on the ground is kilograms. Weight of the tool itself is 1100 kg.

54 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 44 Finish: 47 Number: 3 Driving/Testing: Driving and demining on the test course with modified skis. Location: N Kulla Weather: Cloudy Temp: + 8 C Symptoms of errors Driving with modified skis and constant pressure enable the machine to follow terrain contours. Maintenance/supervision: Other/Modifications: Mounted skis slip outside the demined path which is not acceptable and they should be substituted with wheels behind the flail axle. Wider ski and mud protection.

55 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 47 Finish: 49 Number: 2 Driving/Testing: Demining on an earthen course Location: N Kulla Weather: Cloudy Temp: + 8 C Symptoms of errors Driving with the roller as support for the flail tool, does not follow course. Treated material (mass) gathers towards the roller. Maintenance/supervision: Replacement of all demining tools. Other/Modifications: After this trial the roller was replaced with modified skis. Earthen mass that is pushed in front of the tool.

56 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 49 Finish: 51 Number: 2 Driving/Testing: Demining on an earthen course Location: N Kulla Weather: Cloudy Temp: + 1 C Symptoms of errors Maintenance/supervision: Checking of track tension. Other/Modifications: Warm motor still starts with difficulty, possibly a bad injection pump.

57 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 51 Finish: 52 Number: 1 Driving/Testing: Demining on an earthen course Location: N Kulla Weather: Sunny Temp: + 1 C Symptoms of errors: Maintenance/supervision: Other/Modifications: Demining on the earthen course with maximum depth, that is solidly packed earth cm. The weight of the working tool on the ground must be at least 350 kilograms in order to maintain contact with the surface while demining.

58 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 52 Finish: 54 Number: 2 Driving/Testing: Demining on a sandy course Location: N Kulla Weather: Cloudy Temp: + 5 C Symptoms of errors: Maintenance/supervision: Replaced 5 pieces of demining tool. Other/modifications:

59 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 54 Finish: 56 Number: 2 Driving/Testing: Demonstration of the machine to foreign military attaches. Location: Hundtestbanan Weather: Rain Temp: + 5 C Symptoms of errors: Maintenance/supervision: Other/Modifications: The machine is considered interesting.

60 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 55 Finish: 59 Number: 4 Driving/Testing: Demining on the test courses Location: N Kulla Weather: Wet snow 2 cm Temp: + 1 C Symptoms of errors: Can uncontrollably change direction when stone and gathered material (mines) get stuck in the drive tracks. Maintenance/supervision: Checking of all oil levels. Other/Modifications: The hydraulic fluid pumps that drive that track motors have too small oil flow at low speed. When hydraulic fluid reaches operational temperature, the oil flow from the drive pump is insufficient to move the machine. This is possible to remedy by changing to low programmable gear and adjusting oil flow to 28% of maximum oil flow. During all clearing testing drive was manually adjusted to 28% of maximum, the result of which was poor drive power.

61 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 59 Finish: 59 Number: 0 Driving/Testing: Machine by Malte Månsson. Location: Skänninge Weather: Temp: Symptoms of errors Difficult to start warm motor. Maintenance/supervision: Other/Modifications: Replacement of the fuel pump, installation of a heat protection plate between the turbocharger and fuel pump.

62 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 59 Finish: 64 Number: 5 Driving/Testing: Testing of capacity 50 x 50 m Location: N Kulla Weather: Sunny Temp: + 10 C Symptoms of errors: Drive tracks do not have self-cleaning. Maintenance/supervision: Other/modifications: The problem with starting of the warm motor has now been resolved. On the track chassis a large quantity of earth and stone is collected such that the tracks cannot clean themselves. The reason for this is that the chassis has a flat upper side and does not function in lifting or steering of the tracks. Demined mass on the track chassis

63 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start: 64 Finish: 69 Number: 5 Driving/Testing: Demining in vegetation. Location: Hamnaryd Weather: Cloudy Temp: + 5 C Symptoms of errors: Skis slip off the demined path, which means that bushes are lifting the working tool. Maintenance/supervision: Replacement of 6 pieces of tools for demining. Other/Modifications: During demining in dense vegetation with bushes, the equipment for following terrain contours must follow the demined path. With this type of demining it is important that constant pressure is reduced in order to achieve following of terrain contours. Bushes pushed down by the skis.

64 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 69 Finish: 71 Number: 2 Driving/Testing: Dynamic testing of demining. Location: Vittingen Weather: Snow falling Temp: - 2 C Symptoms of errors Machine drives with difficulty straight forward. Deep damage on the working tool, but not penetration after mine detonation. Maintenance/supervision: Replacement of 3 pieces of working tool after removal of AP mine type PROM 1 Other/Modifications: Reduction in maneuvering ability depends possibly on the hydraulic drive pumps not being synchronized. In photo: Shrapnel damage. In photo: Detached chain.

65 Sub-enclosure Attachment 6 2nd Eng. Rgt. Daily log MV 4 Date: Hour counter Start 71 Finish: 72 Number: 1 Driving/Testing: Testing of dynamic demining. Location: Vittingen Weather: Cloudy Temp: + 2 C Symptoms of errors: Maintenance/supervision: Other/Modifications: Trial of demining of AP mines Truppima 10, when the demining tool activates a mine there is not damage, while the skis are damaged when they activate a mine. Mine detonation