TECHNICAL INFORMATION - PDF Free Download

TECHNICAL INFORMATION Model No. Description CONCEPT AND MAIN APPLICATIONS Specification HR2800, HR2810, HR2811F HR2810T, HR2811FT Rotary Hammers 28mm (1-1/8") HR2800 series models have been developed as SDS-plus Rotary hammers positioning between HR2470 and HR3200C series models. See next page for detailed information on benefits. Voltage (V) Standard equipment Side handle (Bar-shaped)... 1 Depth gauge... 1 Quick change drill chuck... 1 (HR2810T, HR2811FT only) Plastic carrying case... 1 Note: The standard equipment for the tool shown may differ from country to country. PRODUCT P 1/ 32 Dimensions: mm (") HR2800 HR2811F HR2810T HR2811FT HR2810 Length (L) 314 (12-3/8) 320 (12-5/8) 339 (13-3/8) 345 (13-5/8) Width (W) 89 (3-1/2) Height (H) 225 (8-7/8) Specification Model HR2800 HR2810/ HR2811F HR2810T/ HR2811FT No load speed: min -1= rpm 0-1,100 Impacts per minute: min -1= ipm 0-4,500 Shank type SDS-plus TCT bit 28 (1-1/8) Core bit 80 (3-1/8) Capacities: Diamond core bit mm (") 80 (3-1/8) Steel 13 (1/2) Wood 32 (1-1/4) Quick change drill chuck No Operation mode 2 modes 3 modes (Rotation only/ (Rotation only/ Rotation with Hammering/ Rotation with Hammering) Hammering only) Vibration absorbing handle No No/ No/ Concrete LED Job light Variable speed control Rotation reversing facility Double insulation Power supply cord: m (ft) Net weight: kg (lbs) Optional accessories See next page. Current (A) 110 7.7 120 7.0 220 3.8 230 3.7 240 3.5 Rated amperage for North America: 7.0A Cycle (Hz) 50-60 50-60 50-60 50-60 50-60 Continuous Rating (W) Input Output 800 400 --- 400 800 400 800 400 800 400 W (The image illustrated above is Model HR2811FT.) No No/ No/ Europe: 4.0 (13.1), other countries: 2.5 (8.2) 3.2 (7.1) 3.2 (7.1)/ 3.3 (7.3) 3.3 (7.3)/ 3.4 (7.5) L H Max. Output (W) 600 600 600 600 600

P 2/ 32 Optional accessories SDS-Plus bits TCT bits (Taper shank) Taper shank adapter (SDS-Plus) Cotter Core bits Center bits Rod Core bit adapter (SDS-Plus) Grip drill Grip drill holder (SDS-Pus) Drill chuck assembly Chuck adapter Drill chuck S13 Chuck key S13 SDS-Plus hammer chuck set Scraper assembly Dust cup 5 Dust cup 9 Dust extractor attachment Joint 25 Hose Grease vessel (30g hammer grease) Bit grease Depth gauge Blow out bulb Safety goggle Bull points Cold chisels Scaling chisels Grooving chisels Hammer service kit Features and benefits HR2800 HR2810 HR2811F HR2810T HR2811FT Class/ Shank type 28mm (1-1/8")/ SDS-Plus Operation mode (R, R+H, H)*1 2 modes 3 modes R /R+H R /R+H / H Vibration absorbing handle No No LED Job light No No Quick change drill chuck*2 No *1: R+H = Rotation with Hammering, H = Hammering only, R = Rotation only, *2: for straight shank bits Compact L-shaped motor housing shortens each distance between rear/side handle and bit tip for high maneuverability and better handling. *Convenient chisel angle setting (except HR2800) No need for using chisel adapter *Torque limiter Vibration absorbing handle (HR2811F/ HR2811FT) Lowest-in-class vibration ensures more comfort and control and less fatigue. Bumper for protecting mode change lever *SDS-Plus shank *One-touch sliding chuck for easy bit changes *LED job light (HR2811F, HR2811FT) for more illuminated efficient work *Quick change drill chuck (HR2810T, HR2811FT) Toolless quick change between Quick change drill chuck and SDS-Plus drill chuck (The image illustrated above is Model HR2811FT.) Quick change drill chuck *Rubberized soft grip provides more comfort and control. Highest-in-class efficiency in both drilling and chipping (Refer to the performance comparison charts on page 5.) SDS-Plus chuck *The same advantages as HR2470 series models

Comparison of products P 3/ 32 Models Without Quick change drill chuck Specification Continuous rating input: W Rated amperage for North America: A No load speed: min-1= rpm Impacts per minute: min-1=ipm HR2800/ HR2810/ HR2811F 800 7.0 0-1,100 0-4,500 Shank type SDS-plus SDS-plus SDS-plus SDS-plus Concrete Steel Wood Model TCT bit Core bit Diamond core bit 28 (1-1/8) 80 (3-1/8) 80 (3-1/8) 13 (1/2) 32 (1-1/4) Impact Catalog 2.9 2.7 3.3 3.1 energy: J Calculated by Makita 2.9 2.7 2.9 2.5 Rotation reversing facility *2 Variable speed control Job light No/ No/ Double insulation Length 314/ 314/ 320 (12-3/8/ 12-3/8/ 12-5/8) Dimensions: mm (") Width 89 (3-1/2) Height 225 (8-7/8) Net weight: kg (lbs) 3.2/ 3.2/ 3.3 (7.1/ 7.1/ 7.3) Makita Competitor B Competitor D HR2470/ HR2470F 780 6.7 0-1,100 0-4,500 24 (15/16) 54 (2-1/8) 65 (2-9/16) 13 (1/2) 32 (1-1/4) No/ 362 (14-1/4) 83 (3-1/4) 214 (8-3/8) 2.6 (5.7) A (North America: A') 720 7.2 0-800 0-4,000 28 (1-1/8) 80 (3-1/8) 80 (3-1/8) 13 (1/2) 30 (1-3/16) Vibration absorbing handle No/ No/ No No No No *2 No No 334 (13-1/8) 93 (3-5/8) 208 (8-3/16) 3.3 (7.3) B 710 7.5 0-760 0-4,200 26 (1) 65 (2-9/16) --- 13 (1/2) 30 (1-3/16) Capacity: mm (") Noise: db(a) Vibration*1: m/s2 Operation mode R+H = Rotation with Hammering H = Hammering only R = Rotation only 89/ 89/ 90 90 88 20.0/ 20.0/ 15.0 15.5 30.0 2 modes/ 3 modes / 3 modes (R/ R+H)/ (R/ R+H/ H)/ (R/ R+H/ H) 3 modes (R/ R+H/ H) 92 28.5 2 modes 3 modes (R/ R+H) (R/ R+H/ H) 297 (11-3/4) 84 (3-5/16) 226 (8-7/8) 2.95 (6.5) *1 The vibration total value (tri-axial vector sum) measured by Makita *2 The no load speed in reverse rotation will be approximately half that in forward rotation.

Comparison of products P 4/ 32 Models With Quick change drill chuck Makita Competitor B Competitor D Competitor H Model Specification HR2810T/ HR2811FT C D E / F G Continuous rating input: W Rated amperage for North America: A No load speed: min-1= rpm Impacts per minute: min-1=ipm Shank type SDS-plus SDS-plus Concrete Steel Wood 800 Impact Catalog 2.9 3.3 3.1 energy: J Calculated by Makita 2.9 2.9 2.5 Rotation reversing facility *2 Variable speed control Job light No/ Double insulation Length 339/ 345 (13-3/8/ 13-5/8) Dimensions: mm (") Width 89 (3-1/2) Height 225 (8-7/8) Net weight: kg (lbs) 3.3/ 3.4 (7.3/ 7.5) 7.0 0-1,100 0-4,500 720 7.2 0-800 0-4,000 Vibration absorbing handle No/ No No Noise: db(a) Vibration*1: m/s2 TCT bit Core bit Diamond core bit 28 (1-1/8) 80 (3-1/8) 80 (3-1/8) 13 (1/2) 32 (1-1/4) 89/ 90 87 20.0/ 15.0 28 (1-1/8) 80 (3-1/8) 80 (3-1/8) 13 (1/2) 30 (1-3/16) 20.5 No *2 No No 380 (15) 93 (3-5/8) 208 (8-3/16) 3.4 (7.5) 710 7.5 0-760 0-4,200 SDS-plus 26 (1) 65 (2-9/16) --- 13 (1/2) 30 (1-3/16) N/A N/A 314 (12-3/8) 84 (3-5/16) 226 (8-7/8) 3.1 (6.8) 650 5.4 0-880 0-5,100 SDS-plus 24 (15/16) No 2.1 2.1 87.5 12.5 No 323 (12-3/4) 79 (3-1/8) 215 (8-1/2) 2.8 (6.2) 720 6.3 0-740 0-4,200 Capacity: mm (") Operation mode R+H = Rotation with Hammering H = Hammering only R = Rotation only 68 (2-11/16) --- 13 (1/2) 20 (13/16) 3 modes 2 modes 3 modes 3 modes/ 2 modes SDS-plus 24 (15/16) 68 (2-11/16) --- 13 (1/2) 20 (13/16) No 2.6 N/A 86 21.0 3 modes (R/ R+H/ H) (R/ R+H) (R/ R+H/ H) (R/ R+H/ H)/ (R/ R+H) (R/ R+H/ H) No 343 (13-1/2) 85 (3-3/8) 215 (8-1/2) 3.2 (7.1) *1 The vibration total value (tri-axial vector sum) measured by Makita *2 The no load speed in reverse rotation will be approximately half that in forward rotation.

Comparison of products Performance Comparison Note: 1. The test results depend to a great extent on the hardness of materials, etc. 2. Numbers in the charts below are relative values when the capacities of: Competitor B's model A is indexed at 100 in 1) Drilling performance comparison. Competitor H's model G is indexed at 100 in 2) Chipping performance comparison. 1) Drilling Test conditions: Drilled in concrete to a depth of 40mm (1-9/16"), and measured time required. Test Material: Concrete with compressive strength of 40N/mm2 Axial push force applied: --- Extension power supply cord: sectional area/1.5mm2, length/50m P 5/ 32 [diameter 10.5mm (13/32")] slow fast Makita HR2811F Competitor B Model A Competitor H Model E Competitor H Model G 105 100 90 100 0 50 100 150 [diameter 14.5mm (9/16")] slow fast Makita HR2811F Competitor B Model A Competitor H Model E Competitor H Model G 70 100 100 85 0 50 100 150 [diameter 22mm (7/8")] slow fast Makita HR2811F Competitor B Model A Competitor H Model E 65 130 100 Competitor H Model G 70 0 50 100 150 2) Chipping Test conditions: Chipped concrete with compressive strength of 40N/mm2, and measured the amount of concrete removed. small large Makita HR2811F Competitor B Model A Competitor H Model E Competitor H Model G 140 not equipped with "hammering only" mode 100 70 100 0 50 100 150 200

CAUTION: Remove the bit from the machine for safety before repair/ maintenance in accordance with the instruction manual! [1] NECESSARY REPAIRING TOOLS Code No. 1R003 1R041 1R212 1R164 1R165 [2-1] LUBRICATION Description 1R232 Pipe 30 Inserting Oil seal 25 into Barrel 1R238 Apply Makita grease N. No.00 to the following portions designated with the black triangle to protect parts and product from unusual abrasion. P 6 / 32 1R252 Round bar for arbor 30-100 Removing Oil seal 25 and Needle bearing 3012 from Barrel 1R269 Bearing extractor Removing Ball bearings 1R291 Retaining Ring S Pliers ST-2N Vise Plate Tip for Retaining ring pliers Ring Spring Setting Tool A Ring Spring Setting Tool B Round bar for arbor 9-100 Retaining ring S and R pliers Assembling / Disassembling Retaining rings and Ring spring Holding Tool holder, when disassembling Ring spring 28 Attachment for 1R003 Inserting Oil seal 25 into Barrel as it was. Inserting Needle bearing 3012 into Barrel Removing Crank section Removing Retaining rings Use for 331776-1 Piston cylinder Assembling Ring spring 28 into Tool holder (Reserved for a jig in extra) Item No. Description Portion to lubricate 1 Cap 35 Its Rip portion 11 21 23 25 27 Barrel Steel ball 7 Oil seal 9 Sleeve 9 Ring 10 30 O ring 9 36 Pin 6 38 39 Piston cylinder 42 Spiral bevel gear 31 131 134 135 140 O ring 16 Cap 35 Stopper Steel ball 7 Steel ball 6 Oil seal 25 and Needle bearing 3012 Whole portion Rip portion Its inside where Impact bolt contacts. Its Surface where Cushion ring 13 contacts Whole portion Whole portion Whole portion Its inside where Striker moves. Its outside for smooth sliding in Tool holder Its Teeth oprtion Its Rip portion Its Inside where Tool holder contacts Whole portion Whole portion Fig. 1 Barrel and Tool Holder Section HR2800 HR2810 HT2811F 1 1 Needle bearing 3012 42 25 11 21 23 27 30 36 38 39 Ring spring 19 Chuck cover Oil seal 25 Tool holder Impact bolt Striker Connecting rod Cushion ring 13 O ring case HR2810T and HR2811FT 131 131 134 135 140 Chuck cover Tool holder

[2-2] LUBRICATION Apply Makita grease N. No.1 to the following portions designated with the black triangle to protect parts and product from unusual abrasion. P 7 / 32 Item No. Description Portion to lubricate 48 73 O ring 18 55 Crank housing Its inside. Apply approx. 15g Makita grease. Gear housing 75 Oil seal 12 Whole portion Its space where Helical gear 29 and Torque limiter engage. Apply approx. 10g Makita grease. Its Rip portion Fig. 2 Link lever Gear Section, Crank Housing 55 75 Spiral bevel gear 9 Torque limiter 73 48 Crank shaft Armature Helical gear 29

[3] -1. Tool Holder Section P 8 / 32 DISASSEMBLY Fig. 3 HR2810T HR2811FT (Quick Change Chuck Type) Cap 35 Chuck Cover Tool Holder Set Ring Spring 19 1R003 Tool Holder Guide Steel Ball 7.0 Stopper Separate Tool holder set from Tool holder guide. Disassemble cap 35. And remove Ring spring 19. Disassemble Chuck cover. And remove Steel ball 7.0 while pressing down Stopper. Stopper Guide washer Conical compression spring 21-29 Flat Washer 21 Tool Holder Ring spring 21 Flat washer 24 Leaf spring Steel ball 5 Tool holder Torsion spring 31 Change ring Change cover Torsion spring 31 Steel ball 6: 2 pcs. After disassembling Steel ball 7.0, the parts as illustrated above can be disassembled. From the Tool holder guide side, remove Ring spring 21 with 1R291. Flat washer 24, Leaf spring and Steel ball 5 can be disassembled. Take out Tool holder together with Change ring from Change cover. And separate Change ring from Tool holder. After removing Torsion spring 31, Steel ball 6 can be separated from Tool holder. Fig. 4 HR2800 HR2810 HR2811F (without Quick Change Chuck System) 1R003 Ring 21 Chuck cover Cap 35 Ring spring 19 Chuck cover Ring 21 Steel ball 7.0 Ring 21 Guide washer Conical compression spring 21-29 Disassemble Cap 35. And remove Ring spring 19 with 1R003. Disassemble Chuck cover. And remove Steel ball 7.0 while pressing down Ring 21. After disassembling Steel ball 7.0, the Tool holder section can be disassembled as illustrated above.

[3] -1. Tool Holder Section ASSEMBLY for HR2810T, HR2811FT 1) Assemble Change ring to Change cover. (Fig. 5) 2) Assemble Torsion spring 31 to Tool holder. (Fig. 6) 3) Assemble Tool holder to Change cover. (Fig. 7) Fig. 5 P 9 / 32 Face this Taper shaped hole side to Tool holder assembling side. Section a - a' Aligning the Hole of Change ring with that of Change cover, assemble Change ring to Change cover. a a' Change ring Change cover Fig. 6 Insert the Pin portion into the hole of Tool holder. Pin portion Torsion spring 31 Tool holder Steel ball 6: 2 pcs. Mount Steel balls 6 to Tool holder. Note: Apply Makita Grease RA No.1 to Steel balls 6 to avoid falling them off. Fig. 7 75 degrees Insert this tail into hole of the Change cover through the hole of Change ring. Tool holder Torsion spring 31 Tool Holder Change ring (assembled in Fig. 5) Change cover Turn Tool holder approx.75 degrees clockwise. Tool holder can be assembled to Change cover.

P 10 / 32 [3] -1. Bit Holder Section ASSEMBLY for HR2810T, HR2811FT 4) Attach Steel ball 5.0 between the ends of Leaf spring, and mount them to the groove between Change lever and Tool holder. (Fig. 8) 5) Mount Flat washer 24 on Leaf spring, and secure them with Ring spring 21. (Fig. 8) 6) As for the assembling of Cap 35 side, do the reverse of Disassembling steps. Refer to Fig. 3. ASSEMBLY for HR2800, HR2810, HR2811F 1) Do the reverse of Disassembling steps. Refer to Fig. 4. Fig. 8 Ring spring 21 Flat washer 24 Leaf spring Steel ball 5.0 Tool holder [3] -2. Drill Chuck Assembly ( for HR2810T, HR2811FT ) DISASSEMBLY Drill chuck assembly can be disassembled as illustrated in Fig. 9-13. Fig. 9 Fig. 10 1R003 1R212 Ring spring 21 Spacer Chuck holder Steel ball 5.0 Leaf spring Flat washer 24 Torsion spring 31 Change ring Change cover After Removing Ring spring 21, strike Drill chuck assembly against the Work bench which is covered with cloth as a cushion. Flat washer 24, Leaf spring and Steel ball 5.0 can be removed. Pull off Change cover. Change ring and Torsion spring 31 can be removed. Fig. 11 Fig. 12 Fig. 13 Steel Ball 6: 2 pcs. Spacer Chuck Holder Flat Head Screw M6x22 Chuck Holder Hex wrench 10 Chuck Holder Remove Spacer and Steel ball 6. Fixing Chuck holder's Flat portion with Vise, remove Flat head screw M6x22 using Impact driver by turning clockwise. Fixing Chuck holder's flat portion with Vise, separate Drill chuck from chuck holder by turning counterclockwise using Hex wrench 10.

[3] -2. Drill Chuck Assembly( for HR2810T, HR2811FT ) P 11 / 32 ASSEMBLY 1) Fixing Chuck holder's Flat portion with Vise, assemble Drill chuck to Chuck holder by turning clockwise using Hex wrench 10. Refer to Fig. 13. 2) Secure Drill chuck with M6x22 Flat head screw by turning counterclockwise using Impact driver. Refer to Fig. 12. 3) Assemble Drill chuck to Spacer. (Fig. 14) And mount Steel ball 6. (Fig. 15) 4) Mount Torsion spring 31. And Assemble the Drill chuck to Change cover. (Fig. 16) 5) Mount Steel ball 5, Leaf spring and Flat washer 24 to Chuck holder. And secure them with Ring spring 21. (Fig. 17). Fig. 14 Fig. 15 Steel ball 6: 2 pcs. Fitting Chuck holder's flat portions to Spacer, mount Drill chuck to Spacer. Chuck holder Spacer Chuck holder Spacer Note: Apply Makita grease RA No.1 to Steel balls 6 to avoid falling them off. Fig.16 Hole for accepting Torsion Spring 31 Spacer Insert this Tail into Hole of the Change cover through the Hole of Change ring. Turn Drill chuck approx. 75 degrees clockwise. Drill chuck can be assembled to Change cover. 75 degrees Chuck holder Nipping this Pin portion with Pliers, insert it into the hole of Chuck holder. Torsion spring 31 Change ring Drill chuck Torsion spring 31 Change cover Change cover Assemble Change ring to Change cover. Refer to Fig. 5. Fig.17 Leaf spring Flat washer 24 Ring spring 21 Steel ball 5

P 12 / 32 [3] -3. Handle Section DISASSEMBLY 1) Disassemble Crank housing cover by unscrewing M4x16 Hex socket head bolt. (Figs. 18 and 18A) 2) Two mode type is diffrent from Three mode type in the Way to remove Change lever. For Two mode type, do the Step of Figs. 18 and 19. For Three mode type, do the Step of Figs. 18A and 19A. Fig.18 Fig.18A 2 Mode Type 3 Mode Type HR2800 Hex socket head bolt M4x16 HR2810, HR2810T, HR2811F, HR2811FT Hex socket head bolt M4x16 Rotary hammer mode Crank Housing Cover Rotary hammer mode Crank housing cover Drill mode Hammer Mode Tapping screw 4x18 Change lever Tapping screw 4x18 Hammer mode Change lever Loosen 4x18 Tapping screw, and set Change lever to Rotary hammer mode. Loosen 4x18 Tapping screw, and set Change lever to Neutral position (designated with gray color). Fig.19 Fig.19A Link lever Link lever Change lever Change lever Projection Link lever Link lever Complete Projection Remove Change lever. Remove Change lever.

P 13 / 32 [3] -3. Handle Section DISASSEMBLY 3) Now Handle section can be separated from the Machine in the order of Figs. 20, 21 and 22. Note: Change lever assembling hole of Handle (Handle base) is blocked by the projection of Link lever. It is recommended to use two slotted-screwdrivers. (Fig. 21) Fig.20 Normal Handle HR2800, HR2810, HR2810T Tapping screw 5x20: 2 pcs. Vibration Absorbing Handle HR2811F, HR2811FT Tapping screw 5x20: 2 pcs. Pan head screw M5x35: 2 pcs. Pan head screw M5x35: 2 pcs. Fig.21 2. Inserting this Screwdriver between Handle and Link lever, separate Handle by pushing it toward the direction designated with black arrow. 2. Inserting this Screwdriver between Handle base and Link lever, separate Handle base by pushing it toward the direction designated with black Arrow. Link Lever Complete Crank housing Link Lever Complete Crank housing Handle 1. Inserting this Screwdriver between Crank housing and Handle, lever up Handle. Handle Base 1. Inserting this Screwdriver into the Gap between Crank housing and Handle base, lever up Handle base. Handle Fig.22 After separating Handle from Crank and Motor sections, disconnect the Connectors. Now Handle section is disassembled ly. After separating Handle from Crank and Motor sections, disconnect the Connectors. Now Handle section is disassembled ly. The electrical parts can be removed from Handle section in the next step. The electrical p arts can be removed from Handle section in the next Step.

P 14 / 32 [3] -3. Handle Section DISASSEMBLY 4) Disassemble Handle cover by unscrewing 4x18 Tapping screw. Now the electrical parts can be replaced as illustrated in Fig. 23. Fig.23 Normal Handle HR2800, HR2810, HR2810T Switch Noise suppressor Vibration Absorbing Handle HR2811F, HR2811FT Noise suppressor Switch Power supply circuit Handle Handle cover Tapping screw 4x18 Handle base Handle Handle cover Tapping screw 4x18 Power supply cord Cord clamp Power supply cord Cord clamp ASSEMBLY 1) Set the electrical parts in place, and guide their Lead wires of Connectors side to the Motor housing side of Handle (Handle base), in order to connect them with the Connectors of Lead wires from Motor housing. And secure Handle cover to Handle with Tapping screw 4x18. Refer to Figs. 23 and 22. 2) Connect the Connectors of the replaced electrical Parts with those of Lead wires from Motor housing. Refer to Fig. 22. 3) Assemble the Handle section to the Machine. Refer to Figs. 21 and 20. 4) Assemble Change lever to Link lever. Refer to Figs. 19 and 19A.

P 15 / 32 [3] -4. Motor Section DISASSEMBLY 1) Remove Crank housing cover and Handle section from the Machine. (Fig. 18 / Fig. 18A, Fig. 19 / Fig. 19A, Fig. 20, Fig. 21, Fig. 22) 2) Disassemble Armature as illustrated in Figs. 24 and 25. Fig.24 Disconnection of the Contact of Carbon brush with Commutator 2. Carbon brush is pressed with Spiral Spring, to maintain its Contact with Armature's commutator. Carbon brush Spiral spring 3. Detach Spiral spring from Carbon brush. Spiral spring Carbon brush 4. By pulling Carbon brush, disconnect its Contact with Armature's Commutator. Now Armature is ready to be disassembled. Carbon brush Tapping screw 4x18 Motor housing Rear cover 1. Disassemble Rear cover by unscrewing two 4x18 Tapping screws. Fig.25 Tapping screw 5x20: 4 pcs. 1. Remove Motor housing by unscrewing four 5x20 Tapping screws. And separate Gear housing from Crank housing. Crank shaft section remains in Crank housing. 2. Disassemble Armature from Gear housing by striking the Drive end of Armature with Plastic hammer. Crank housing Gear housing Gear housing Armature Motor housing Armature With 1R269, these Ball bearings can be removed.

[3] -4. Motor Section ASSEMBLY P 16 / 32 Do the reverse of disassembling steps. Refer to Figs. 24 and 25. Note: When mounting fresh Ball bearings to Armature, do not forget to mount Flat washer 10, Sleeve 10 and Insulation washer to Armature. (Fig. 26) After assembling Armature to Gear housing, do not forget to mount Seal ring and Cup washer 16 to the Crank shaft accepting hole. (Fig. 27) Fig. 26 Fig. 27 Cup washer 16 Sleeve 10 Flat washer 10 Insulation washer Seal ring Crank shaft accepting hole Ball bearing 6000LLU Ball bearing 607DDW Gear housing [3] -5. Crank Housing 1) Disassemble Tool holder section from the Machine. (Fig. 3 for HR2810T and HR2811FT / Fig.4 for HR2800, HR2810 and HR2811F in Page 8) 2) Disassemble Handle section from the Machine. (Fig.18 / Fig.18A, Fig.19 / Fig.19A, Fig.20, Fig.21, Fig.22) 3) Separate Crank housing from Motor housing. (Figs. 24 and 25) 4) Disassemble Barrel and Tool holder from Crank housing. (Fig. 28) 5) Remove Crank cap and Link lever from Crank housing. (Fig. 29) And Separate Gear housing from Crank housing. Torque limiter section can be removed. (Fig. 29) Fig. 28 Fig. 29 Hex socket head bolt M5x25: 4 pcs.. Remove Crank cap by turning counterclockwise with Wrench for Angle grinder. 28mm Barrel Tool holder with Drive sleeve, etc. Crank cap Link lever Tapping screw 4x18 Gear housing Employ Wrench for Angle grinder with 28mm pitch. Remove Link lever by pulling off the Tapping screw 4x18 screwed as a Knob. Piston cylinder Crank housing Remove Torque limiter section by tapping the edge of Gear housing with Plastic hammer. Torque Limiter Section

P 17 / 32 [3] -5. Crank Housing DISASSEMBLY 6) Disassemble Link plate section, Spiral bevel gear 31, Piston cylinder, Striker and O ring 16, from Crank housing. (Figs. 30, 31, 32, and 33) In case of HR2800 (2 Mode type), you can skip the Step of Fig. 30. Fig. 30 Remove Link plate section from Crank housing. Remove Link plate from Guide plate, and pull off Compression spring 4 from Link plate. Link plate section Crank housing Link plate < Note > Link plate section is not installed in HR2800 (2 Mode type). Pan head screw M4x12 Guide plate Compression spring 4 Fig. 31 Piston Cylinder Push Piston cylinder into Crank housing until it stops. Strike Crank housing against the Work bench. Spiral bevel gear 31 Spiral bevel gear 31 can be disassembled from Crank housing. Fig. 32 Crank Housing Complete viewed from Crank Cap side Crank housing Connecting rod Piston cylinder Crank shaft Crank housing Connecting rod Piston cylinder Turning Crank shaft, find the Point for easy removing of Connecting rod. And remove Connecting rod from Crank shaft at that Point. Fig. 33 Piston cylinder Striker Disassemble Striker from Piston cylinder. O ring 16 can be replaced. O ring 16

[3] -5. Crank Housing ASSEMBLY P 18 / 32 1) Mount new O ring 16 to Striker, and insert Striker to Piston cylinder. Refer to Fig. 33. 2) Assemble Piston cylinder to Crank housing, and connect Connecting rod with Crank shaft. Refer to Fig. 32. 3) Assemble Spiral bevel gear 31 to Crank housing. (Fig. 34) 4) Assemble the Link plate section by mounting Guide plate and Compression spring 4 to Link plate. Secure the assembled Link plate section to Crank housing with Pan head screw M4x12. (Refer to Fig. 30) Note: In case of HR2800 (2 Mode type), you can skip this step because Link plate section is not installed in HR2800. 5) Mount Torque limiter section, Cup washer 16 and Seal ring to Gear housing. Refer to Fig. 27. 6) Assemble Link lever to Crank housing. (Fig. 35) 7) Do the reverse of Disassembling Steps. Refer to Figs. 28 and 29. Fig. 34 Employ Tool holder section as an Inserting jig for Spiral bevel gear 31 because the Gear can be easily accepted by the built-in Plane bearing of Crank housing. Tool holder section as an Inserting jig Spiral bevel gear 31 Piston cylinder Crank housing Fig. 35 HR2800 (2 Mode Type) HR2810, HR2810T, HR2811F, HR2811FT (3 Mode Type) Projection Pin Hole Link lever Link Plate Projection Pin Link lever Hole Neutral position Note: In case of 2 Mode type, Change lever is removed while setting in Rotary hammer mode. (Figs. 18 and 19) Therefore, setting hole in the same position, insert a pin into hole. Note: In case of 3 Mode type, Change lever is removed while setting in Neutral position. (Figs. 18A and 19A) Therefore, setting hole in the same position, insert a pin into hole.

[3] -6. Torque Limier Section P 19 / 32 DISASSEMBLY 1) Remove Crank housing cover and Handle section from the Machine. (Fig. 18 / Fig. 18A, Fig. 19 / Fig. 19A, Fig. 20, Fig. 21, Fig. 22) 2) Disassemble Gear housing from Crank housing (Figs. 24 and 25) 3) Remove Torque limiter section from Gear housing. (Fig. 36) 4) Torque limiter section can be disassembled as illustrated in Fig. 37. Note: It is impossible to disassemble Torque limiter itself. Replace the old Torque limiter with the new one as a Part. Fig. 36 Remove Torque limiter section by tapping the edge of Gear housing with plastic hammer. Gear housing Torque limiter section Fig. 37 1R269 Retaining Ring S-10 Key 4 1R291 Ball Bearing 608LLU Ball Bearing 6001LLU Torque Limiter Complete Spiral Bevel Gear 9 1R269 Ball Bearing 6001LLU Spiral Bevel Gear 9 ASSEMBLY 1) Do the reverse of disassembling steps.

[3] -7. Crank Shaft DISASSEMBLY P 20 / 32 1) Remove Crank housing cover and Handle section from the Machine. (Fig. 18 / Fig. 18A, Fig. 19 / Fig. 19A, Fig. 20, Fig. 21, Fig. 22) 2) Separate Gear housing from Crank housing as illustrated in Figs. 24 and 25. 3) Disassemble Crank housing. (Figs. 28, 29, 31 and 32) < Note > No need to remove Link lever and Link plate section. 4) Remove Crank section from Crank housing using 1R238 and arbor press. (Fig. 38) 5) The Crank section is disassembled as illustrated in Figs. 39 and 40. Fig. 38 Fig. 39 Crank Section 1R003 1R212 Retaining ring WR-8 Helical Gear 29 Flat Washer 8 Helical Gear 29 Clutch Conical Compression Spring 16-26 Crank Shaft Key 4: 2 pcs. Pressing down Helical gear 29, remove Retaining ring WR-8. Now Flat washer 8, Helical gear 29, Clutch, Conical compression spring 16-26 and Key 4 can be removed from Crank shaft. Fig. 40 Remove Retaining ring S-15 with 1R291. 1R269 Retaining ring S-15 1R291 Ball bearing 6002LLU can be disassembled from Crank shaft. Ball bearing 6002LLU Crank shaft ASSEMBLY Do the reverse of disassembling steps. Note: Mount Conical compression spring 16-26 as illustrated in Fig. 41. Fig. 41 Clutch Conical compression spring 16-26 Large ring side faces to Clutch. Ball bearing 6002LLU Small ring side faces to Ball bearing 6002LLU.

[3] -8. Barrel section DISASSEMBLY P 21 / 32 1) Disassemble Tool holder section. (Figs. 3 and 4) And remove Crank housing cover. (Fig. 18/ Fig. 18A) 2) Remove Barrel from Crank housing. (Fig. 28) 3) Remove Ring spring 41 as illustrated in Fig. 42. Now Barrel section can be disassembled as illustrated in Fig. 43. Fig. 42 Fig. 43 Barrel O ring 46 Ring spring 41 Remove Ring spring 41 with Slotted head screwdriver. Note: It may pop out the inner parts when removing Ring spring 41. Be sure to hold Lock sleeve by hand. Urethane washer 31 Barrel Compression spring 37 Lock sleeve Flat washer 31: 2 pcs. 4) In Barrel, Needle bearing 3012 and Oil seal 25 are installed as illustrated in Fig. 44. Apply 1R252 to Oil seal 25, and press it with Arbor press, and remove Needle bearing 3012 and oil seal 25 as illustrated in Fig. 45. Fig. 44 Fig. 45 Needle bearing 3012 1R252 Oil seal 25 Oil seal 25 Needle bearing 3012 ASSEMBLY 1) Assemble Oil seal 25 to Barrel as illustrated in Figs. 46 and 47. Fig. 46 Fig. 47 1R232 Oil seal 25 Barrel 36mm With 1R232 and Arbor press, insert Oil seal 25 until it stops. In this Step, Oil seal 25 is not yet inserted ly. because the outer Diameter of 1R232 is bigger than that of Oil seal setting hole. The diameter of Oil seal setting hole is 35mm. 1R164 34mm Applying 1R164 to Oil seal 25, face its 34mm Diameter side to Oil seal 25. And mount the Oil seal by pressing 1R164 with Arbor press until it stops. Now the Oil seal 25 can be assembled to the place ly. Barrel

P 22 / 32 [3] -8. Barrel section ASSEMBLY 2) Assemble Needle bearing 3012 and Flat washer 31 to Barrel as illustrated in Fig. 48. 3) Secure Urethane washer 31, the other Flat washer 31, Compression spring 37 and Lock sleeve with Ring spring 41. (Fig. 49) Fig. 48 Fig. 49 1R165 Flat washer 31 Needle bearing 3012 Barrel 40mm Applying 1R165 to Flat washer 31, mount Needle bearing 3012 by pressing 1R165 with Arbor press. Now the Needle bearing 3012 and Flat washer 31 can be assembled to Barrel. Ring spring 41 Lock sleeve Compression spring 37 Flat washer 31 (the other one) Urethane washer 31 Note: Turning Barrel, press Needle bearing 3012 with Arbor press to avoid tilting. After assembling Urethane washer 31, Flat washer 31 Compression spring 37 and Lock sleeve, secure them with Ring spring 41. [3] -9. Impact Bolt DISASSEMBLY 1) Remove Barrel section and Tool holder (guide) from Crank housing. (Fig. 28) 2) Disassemble the Parts from Tool holder (guide). (Fig. 50) Fig. 50 Tool holder (guide) O ring 26 Tool holder (guide) Compression spring 30 Lock sleeve O Ring 26 Remove O Ring 26. Tool holder section can be disassembled as illustrated right. Flat washer 29

[3] -9. Impact Bolt DISASSEMBLY 3) If the Cut portion of Ring spring 28 comes into your sight through the side hole of Tool holder (guide), push the cut portion it to the out side of the hole. (Fig. 51) Fig. 51 P 23 / 32 Ring spring 28 showing its cut portion Ring spring O ring case O ring case Push the cut portion to the out side of the hole. 4) Fixing Tool holder (guide) with 1R041 and vise, apply two slotted-screwdrivers to Ring spring 28 from both side holes. Strike two slotted-screwdrivers to Ring springs by turns and push out Ring spring 28 from the inner Groove. (Fig. 52) Fig. 52 Push out Ring spring 28 from the inner Groove. Inner Groove of Tool holder O ring case 1R041 Ring spring 28 off from inner Groove 5) Push Ring spring 28 from both side holes, until it gets slanted in Tool holder (guide) for easy pulling off in the next step. (Fig. 53) 6) Pull off Ring spring 28 from Tool holder (guide) with Pliers. (Fig. 54) Fig. 53 Fig. 54 Ring Spring 28 slanted in Tool holder (guide) <Note> Do not reuse the removed Ring spring 28. Ring Spring 28

[3] -9. Impact Bolt DISASSEMBLY 7) The inner Parts can be removed as illustrated in Figs. 55 and 56. Fig. 55 P 24 / 32 Sleeve 9 Ring 10 Impact bolt Cushion ring 13 O ring case with O ring 9 Strike Tool holder (guide) against the Work bench. Now the inner parts as illustrated above can be disassembled from Tool holder (guide). Fig. 56 HR2800, HR2810, HR2811F HR2810T, HR2811FT Tool holder Oil seal 9 Side hole for Steel ball 7.0 Oil seal 9 Tool holder Tool holder guide Oil seal 9 Tool holder guide Oil seal 9 Inserting a slotted screwdriver from the side hole for Steel ball 7.0, remove Oil seal 9 by pushing with the Screwdriver. Tool holder guide for HR2810T and HR2811FT do not have Side hole for Steel ball 7.0. Remove Oil seal 9 by pushing with the bent Screwdriver as illustrated above. ASSEMBLY 1) Mount Oil seal 9 and the other inner Parts as illustrated in Fig. 57. Fig. 57 Sleeve 9 Impact bolt Ring 10 Cushion ring 13 O ring case with O ring 9 Assemble the inner parts. Oil seal 9 Push Oil seal 9 into Tool holder (guide) until it stops by pushing with the assembled inner parts. Now Oil seal 9 and the other Parts can be mounted to Tool holder (guide).

P 25 / 32 [3] -9. Impact Bolt ASSEMBLY 2) Assemble Ring spring 28 by pressing Piston cylinder with Arbor press as illustrated in Fig. 58. Fig. 58 Note: Never use the Piston cylinder built-in the machine as the jig because it is scratched when inserted in Tool holder. Be sure to have an extra Piston cylinder as a jig for the application. Note: New Ring spring 28 has to be mounted. Ring spring 28 Piston Cylinder Note: Be careful not to overlap the cut portion of Ring spring 28 on side hole when inserting it into Tool holder (guide). Side hole 3) Do the reverse of Disassembling steps. (Refer to Fig. 50.) [3] -10. Fastening Torque of Screw and Bolt Fasten the Bolts illustrated in Fig. 66 with the Fastening Torque listed below. Fig. 66 7 Position No. 7 Size of Hex socket head bolt M5 x 25 Used Q'ty Fastening torque 4 6.1-9.2 N.m 53 53 Crank cap 1 6.1-10.2 N.m Barrel Complete Crank Housing Complete

P 26 / 32 [4] Maintenance When replacing carbon brush, it is recommended to do the following maintenance at the same time for longer service life of the machine. 1) Replace the parts listed below. (Fig. 67) Position No. 1 21 28 30 131 135 Fig. 67 Description Cap 35 Steel ball 7.0 Cushion ring 13 O ring 9 Position No. 31 38 140 Description Ring spring 28 O ring 16 Steel ball 6.0 HR2800, HR2810, HR2811F HR2810T, HR2811FT Tool holder set 1 131 135 140 21 28 30 31 28 30 31 Tool holder 38 Tool holder guide 38 2) Additionally apply approx. 60cc of Makita grease R No.00 to the inside of Crank housing.

P 27 / 32 Circuit diagram < HR2811F / HR2811FT with LED Job Light > Fig. D-1 Color index of lead wires' sheath Black White Red Orange Purple Handle Section Switch Motor Housing D A Choke Coil LED Circuit Field Choke Coil B Noise Suppressor Power Supply Circuit Cord Clamp A C A : Receptacle B : Connector of Lead Unit C : Connector of Choke Coil Unit Power Supply F E Cord D : Connector of Field E : Connector of Power Supply Circuit F : Connector of LED Circuit a : The Lead wires are blue for some Countries. b : The Lead wire is brown for some Countries. c : The Lead wire is blue for some Countries.

P 28 / 32 Wiring diagram < HR2811F / HR2811FT with LED Job Light > Fig. D-2 Fig. S-1 Connector Motor Housing viewed from Handle Base side Approx. 60mm Bundle Lead wire holder Lead wire holders Connector Put Lead wires (black and red) of LED circuit under the other Lead wires and fix them with this Lead wire holder. Lead wire holders Bundle Lead wires from Handle as illustrated in Fig. S-1. Be careful not to pinch the Lead wires in this place when assembling Handle base. Choke coil Be careful not to pinch the Lead wires in this place when assembling Handle base. Motor Housing viewed from Rear Cover side Pass the Lead wires inside of this Pin. Lead wire holder C Lead wire holder B Lead wire holder A Lead wire (purple) of Choke coil unit Put Lead wires (black and red) of LED circuit under the other Lead wires and fix them with Lead wire holders C, D and E. Lead wire holder D Lead wire holder E Lead wire (orange) of Choke coil unit Lead wires (black) of LED circuit Lead wires (red) of LED circuit Lead wire holder F LED Do not make the sag of LED's lead wires here.

P 29 / 32 Wiring diagram < HR2811F / HR2811FT with LED Job Light > Fig. D-3 Handle Section Put the Lead wiress for connecting to Switch, between Side wall of Switch holder and Switch. Switch Fig. S-2 Assemble Power supply circuit to Switch holder, while facing its Wire connecting side to the Inside of Switch holder. Fix the following Lead wires with this Lead wire holder. * The Lead wires guided from Motor housing through Handle base. (Figs. S-1 and D-2) * The Lead wires of Power supply cord Switch Holder Power Supply Circuit Wire Connecting Side Lead Wire Holder Rib Rib Put Lead wires into Switch holder so as not to pinch them. Boss Noise Suppressor Cord Clamp Pass the following Lead wires between Boss and Rib. * The Lead wires guided from Motor housing through Handle base. (Fig. S-1 and Fig. D-2) * The Lead wires of Power supply cord

P 30 / 32 Circuit diagram < HR2800 / HR2810 / HR2810T without LED Job Light > Fig. D-4 Color index of lead wires' sheath Black White Red Orange Purple Handle Section Switch Motor Housing D A Choke Coil Field B Choke Coil Noise Suppressor Cord Clamp A C Noise suppressor is not used for some Countries. A : Receptacle B : Connector of Lead Unit C : Connector of Choke Coil Unit (For some countries, Lead unit is connected instead of Choke coil unit.) D : Connector of Field Power Supply Cord b : The Lead wire is brown for some Countries. c : The Lead wire is blue for some Countries.

P 31 / 32 Wiring diagram << HR2800 / HR2810 / HR2810T without LED Job Light > > Fig. D-5 Fig. S-3 Connector Motor housing viewed from Handle base side Approx. 60mm Bundle Lead Wire Holder Lead wire holders Connector Lead wire holders The Lead wires to Handle have to be bundled as illustrated in Fig. S-3. Be careful not to pinch the Lead wires in this place when assembling Handle base. Choke coil Be careful not to pinch the Lead wires in this place when assembling Handle base. Motor housing viewed from Rear cover side Pass the Lead wires inside of this Pin. Lead wire holder C Lead wire holder B Lead wire holder A Lead wire (purple) of Choke coil unit Lead wire holder D Lead wire holder E Lead wire (orange) of Choke coil unit

P 32 / 32 Wiring diagram < HR2800 / HR2810 / HR2810T without LED Job Light > Fig. D-6 Handle section Put the Lead wires for connecting to Switch, between Side wall of Switch holder and Switch. Switch Fix the following Lead wires with this Lead wire holder. * The Lead wires guided from Motor housing through Handle base. (Figa. S-3 and D-5) * The Lead wires of Power supply cord Switch holder Lead wire holder Rib Rib Put Lead wires into Switch holder so as not to pinch them. Boss Noise suppressor Cord clamp Pass the following Lead wires between Boss and Rib. * The Lead wires, guided from Motor housing through Handle base. (Fig. S-3 and Fig. D-5) * The Lead wires of Power supply cord