MF1105, MF1135 & MF1155

Transcription

1 Massey Harris Massey Ferguson Service Manual MF1105, MF1135 & MF1155 Service Manual THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF MASSEY HARRIS MASSEY FERGUSON OR IT S SUCCESSORS. MASSEY HARRIS MASSEY FERGUSON AND IT S SUCCESSORS ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL. TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS. MH-S-MF1105ETC

2 MF MF MF 1155 TRACTORS Part 1 - Important Procedures and Data Part 2 - Engine - ATC and AT Part 3 - Engine - AV Part 4 - Clutch Part 5 - Transmission - Multi-Power Part 6 - Transmission - a-speed Part 7 - Drive Axle Part 8 - PTO Part 9 - Brakes Part 10- Front Axle and Steering Part 11 - Hydraulics - Description, Trouble-Shooting, Tests and Adjustments Part 12 - Hydraulics - Component Servicing Part 13 - Cab and Air Conditioning

3 PART 2 - ATC AND AT DIESEL ENGINES INTRODUCTION ENGINE DATA AND PROCEDURES FOR MF 1105 AND MF 1135 TRACTORS.. 1 General Data..., 1 Engine Component Features... 2 Engine Removal and Reinstallation Procedures... 3 Engine/Transmission Separation and Reconnection Procedures... Refer to Part 4 - Clutch for this information Lubrication System Information... 7 Lubrication System Data... 7 Removing and Reinstalling Oil Pan... 7 Fuel and Air System Information... 8 Fuel and Air System Data... 8 Air-Bleeding Fuel System... 9 Replacing Fuel Filter Elements Checking and Adjusting Engine Speed Checking Turbocharger Boost Pressure Cooling System Information Cooling System Data Adjusting or Replacing Fan Belts Removing and Reinstalling Water Pump Removing and Reinstalling Radiator Engine Electrical System Data ENGINE SERVICING INFORMATION... Refer to Publication within this part titled "Workshop Manual for 6.372, , T6.354 and Engines" INTRODUCTION This part of the Manual consists of two portions of servicing information concerning the ATC and AT Engines installed in MF 1105 and MF 1135 Tractors respectively. FOR COMPLETE INFORMATION BOTH PORTIONS MUST BE USED TOGETHER. The first portion contains engine information which is specific to these machines and is titled "Engine Data and Procedures for MF 1105 and MF 1135 Tractors". The second portion contains a separate engine publication titled "Workshop Manual for 6.372, , T6.354 and Engines". This publication isa basic service manual covering several different models of engines. Where reference to right and left-hand sides of the engine are mentioned within the text, this refers to the engine as viewed from the rear of the flywheel. DIRECTION OF ENGINE ROTATION IS VIEWED FROM THE CRANKSHAFT PULLEY END OF THE ENGINE. THOROUGHLY CLEAN THE ENGINE BEFORE DISASSEMBLING IT, OR REMOVING ANY COMPONENT PARTS OF THE FUEL SYSTEM. ALSO, MAKE SURE TO CAP, OR OTHERWISE COVER, ALL FUEL OPENINGS AS SOON AS THEY ARE EXPOSED TO PREVENT DIRT FROM ENTERING THE FUEL SYSTEM. CLEANLINESS IS VERY IMPORTANT AND CANNOT BE OVEREMPHASIZED. WHENEVER FUEL SYSTEM COMPONENTS ARE REMOVED, OR FUEL LINE CONNECTIONS ARE DIS TURBED, MAKE SURE TO BLEED THE FUEL SYSTEM OF AIR BEFORE ATIEMPTING TO START THE ENGINE. General Data ENGINE DATA AND PROCEDURES FOR MF 1105 AND MF 1135 TRACTORS Model and Type... Perkins ATC (MF 1105) and AT (MF 1135) Engines, Direct injection, turbocharged diesel Bore and Stroke /8" bore, 5" stroke Number of Cylinders and Displacement... 6 cylinders, total displacement of 354 cu. ins. Firing Order and Compression Ratio , 16 to 1 ratio Direction of Engine Rotation... Clockwise as viewed from water pump end Valve Clearances (Intake and Exhaust) inch "cold", inch "hot" Engine Speeds: Low Idle Speed rpm (PTO speed of rpm with 540 speed PTO, or rpm with 1000 speed PTO) Rated E11gine Speed rpm (PTO speed of 594 with 540 speed PTO, or 1100 rpm with 1000 speed PTO) Maximum Engine Speed (No-Load) rpm (PTO speed of rpm with 540 speed PTO, or rpm with 1000 speed PTO) ATC6.3541/AT6.3b41 ENGINES MF 1105/MF 1135 TRACTORS

4 FAULT DIAGNOSIS-D. I Fault Diagnosis POSSIBLE CAUSE ENGINE WILL NOT START 1. No Fuel at Atomisers:- (a) Stop control in "no fuel" position. (b) Insufficient fuel in tank, air has been drawn into the system. (c) Fuel lift pump 'inoperative. (d) Fuel filters choked or fuel feed pipe blocked. (e) Fuel pump not delivering fuel to the atomisers. Fuel at Atomisers:- (a) Atomisers require servicing. (b) Wrong type of Thermostart unit fitted. (c) Thermostart unit inoperative. (d) Valve and/or Pump timing 'incorrect. 2. Cranking speed too low (a) Battery discharged. (b) Incorrect grade of lubricating oil. (c) Poor electrical connections between bat tery and starter motor, and between battery and earth. (d) Starter motor faulty. 3. Poor Compression With poor compression, starting may be difficult in warm weather, but in cold weather the engine may refuse to start. The causes are numerous, worn liners, piston rings, leaking valves, etc. REMEDY Move control to "run" position. Replenish fuel tank, then "bleed" system as detailed on Page M.12. Remove lift pump and rectify or fit replacement pump. Renew filter elements. Trace and rectify blockage. Remove pump for attention of specialised workshop and fit replacement. Check fuel pump drive. Service or fit replacement set. Fit correct type. Visually check unit as detailed on Page M.14, fit new unit if unserviceable. Check and reset. Fit fully charged replacement. Check oil viscosity against Approved Lists In Appendix for temperature range. Check and tighten or remake connections where necessary. Replace or repair. A top overhaul or a complete overhaul IS indicated. A Service ring pack is available for cast iron liners and for chromed liners. ENGINE STARTS, RUNS FOR A FEW MOMENTS THEN STOPS:- (a) Partially choked fuel feed pipe or filter. (b) Fuel lift pump not giving adequate delivery. (c) Fuel tank vent hole blocked. (d) Restriction in induction or exhaust systems. (e) Air leaking into fuel pipes. Trace and rectify. Check output of lift pump and rectify or replace. Unblock. Check and clear restrictions. Trace and rectify.

5 AIR CLEANERS AND FUEL SYSTEM-M.II Fig. M.21. Slackening Bleed Screw at Hyrlraulic Head Locking Screw. Be sure that the starter pinion and engine have stopped rotating before re-engaging the starter motor otherwise damage may result. If weather j,s cold, ensure cold start aid reservoir contains fuel oil. Turn on tap between reservoir and cold start aid. Fig. M.23. Slackening rnlet Pipe Union Nut. Turn starter switch to the "H" position and hold it there for fifteen to twenty seconds. Then turn the starter switch to the "HS" position, thereby engaging the starter motor. If the engine does not start after twenty seconds. return the switch to the "H" position for ten seconds and then re-engage the starter motor by switching to the "HS" position. As soon as the engine starts, release the swikh to the "R" position and turn otf the tap on the cold start reservoir. Fig. M.22. Operating Fuel Lift Pump. Fig. M.24. Combined Heat/Start Switch. 2. Run Position. 3. Heat Position. I. Off Position. 4. Heat and Start Position.

6 HOlSET 3lD TURBOCHARGER DESCRIPTION... 1 TURBOCHARGER REMOVAL/INSPECTION... 3 TURBOCHARGER LUBRICATION... 1 TURBOCHARGER REBUILDING INSTRUCTIONS... 3 IMPORTANT INFORMATION AND PRECAUTIONS... 1 TURBOCHARGER INSTALLATION CHECK LIST... 6 TROUBLE-SHOOTING... 2 RUN-IN INSTRUCTIONS FOR A CHECKING BOOST PRESSURE... 2 NEW OR REBUILT TURBOCHARGER... 6 Description The 3LD Turbocharger, as shown in Figs. 1 and 2, is a self-contained unit. and consists of a gas turbine and a centrifugal compressor fitted to a common shaft with the necessary surrounding casings. The exhaust gas from the diesel engine is directed through manifolding to the turbine, which utilizes some of the energy in the exhaust gas to drive the compressor. The air required by the engine is supplied at a pressure above atmospheric through the conventional air intake manifold, and enables a higher output to be obtained from the engine. No control over the turbocharger is necessary as the speed and output vary automatically with changes in load and speed of the engine. Turbocharger Lubrication The turbocharger bearing is lubricated with oil taken from the engine lubricating oil system. The oil is piped to the top of the center bearing housing and through a drilling in the casing to the bearing. The bottom end of the oil feed pipe is attached to the cylinder block, at the opposite end of the cross-drilling to which the engine lubricating oil filter is located. Fig. 1 - Important Information and Precautions Right-Hand View of Typical 3LD Turbocharger Installation The oil return flow is by a drain pipe attached to the tappet inspection cover. A MAJOR CAUSE OF TURBOCHARGER FAIL URE IS A LACK OF SUFFICIENT LUBRICA TION TO THE TURBO BEARING AT ENGINE START UP. THIS CONDITION IS AMPLIFIED IF THE ENGINE HAS BEEN IDLE FOR EXTENDED PERIODS. THE DAMAG ING EFFECTS OF THIS "OIL LAG" CAN BE PREVENTED BY CRANKING THE ENGINE FOR SEVERAL SHORT BURSTS PRIOR TO TURNING THE FUEL "ON" AND ALLOWING THE ENGINE TO START. IN EITHER IN STANCE, THE ENGINE SHOULD IDLE FOR SEVERAL MINUTES AFTER STARTING. CLOSE ADHERENCE TO ESTABLISHED MAIN TENANCE SCHEDULES REGARDING LUBE OIL AND/OR FILTER CHANGES IS NECES SARYTOASSURETHENORMALENDURANCE LIFE OF TURBOCHARGER BEARINGS. 1. Emphasize to customers that they start and operate the turbocharged engine in accordance with the recommendations in the appropriate Operator's Manual. See machine Operator's Manual and previous heading "Turbocharger Lubrication" for important information. 2.0il Pressure - Lubricating oil pressure should be 30 psi minimum at normal engine working speeds. 3.0il Temperature - As the turbocharger has been designed to operate satisfactorily when lubricated within the normal range of engine oil temperature, no additional gauge is necessary. Fig. 2 - Left-Hand View of Typical 3LD Turbocharger Installation 4. The boost pressure should be checked yearly or approximately every 750 hours of operation. See later heading for procedure.

7 PART 3 - AV8.540 DIESEL ENGINE INTRODUCTION ENGINE DATA AND PROCEDURES FOR MF 1155 TRACTORS.... General Data...,.... Lubrication System Data.... Fuel System Data.... Cooling System Data.... Engine Electrical System Data.... Engine Removal and Reinstallation Procedures.... Engine/Transmission Separation and Reconnection Procedures.... Refer to Part 4 - Clutch for this information Oil Pan Removal and Reinstallation Procedures ENGINE SERVICING INFORMATION... Refer to Engine Publication within this Part titled "AV Diesel Engine Basic Service Manual" INTRODUCTION This part of the Manual consists of two portions of servicing information concerning the AV8.540 Diesel Engine installed in this machine. FOR COMPLETE INFORMATION BOTH PORTIONS MUST BE USED TOGETHER. The first portion contains engine information which is specific to this machine and is titled "Engine Data and Procedures for MF 1155 Tractors". The second portion contains a separate engine publication titled "AV8.540 Diesel Engine Basic Service Manual". This publication has been written to cover only the engine itself and will in time include different versions of the engine as they are introduced for different applications. Where reference to right and left-hand sides of the engine are mentioned within the text, this refers to the engine as viewed from the rear of the flywheel. DIRECTION OF ENGINE ROTATION IS VIEWED FROM THE CRANKSHAFT PULLEY END OF THE ENGINE. THOROUGHLY CLEAN THE ENGINE BEFORE DISASSEMBLING IT, OR REMOVING ANY COMPONENT PARTS OF THE FUEL SYSTEM. ALSO, MAKE SURE TO CAP, OR OTHERWISE COVER, ALL FUEL OPENINGS AS SOON AS THEY ARE EXPOSED TO PREVENT DIRT FROM ENTERING THE FUEL SYSTEM. CLEANLINESS IS VERY IMPORTANT ANDCANNOT BE OVEREMPHASIZED WHENEVER FUEL SYSTEM COMPONENTS ARE REMOVED, OR FUEL LINE CONNECTIONS ARE DIS TURBED, MAKE SURE TO BLEED THE FUEL SYSTEM OF AIR BEFORE ATIEMPTING TO START THE ENGINE. ENGINE DATA AND PROCEDURES FOR MF 1155 TRACTORS General Data Model and Type... Perkins AV8.540 diesel engine, direct injection, naturally aspirated Bore and Stroke /4" Bore, 4-3/4". Stroke Number of Cylinders and Displacement... 8 cylinder, total displacement of cu. ins. Firing Order... : Direction of Engine Rotation... Clockwise as viewed from water pump end Valve Clearances (Cold) Inch Engine Speeds: low Idle Speed rpm (PTO speed of rpm with 540 speed PTO, or rpm with 1000 speed PTO) Rated Engine Speed rpm (PTO speed of 594 with 540 speed PTO, or 1100 rpm with 1000 speed PTO) Maximum Engine Speed (No-Load) rpm (PTO speed of rpm with 540 speed PTO, or rpm with 1000 speed PTO) AV8.540 ENGINE - MF 1155 TRACTOR

8 PART 4 - CLUTCH DESCRIPTION.... SPLITIING TRACTOR BETWEEN ENGINE AND TRANSMISSION.... RECONNECTING ENGINE TO TRANSMISSION... 4 REMOVING AND INSTALLING CLUTCH COVER AND DISC 4 SERVICING CLUTCH COVER ASSEMBLy... 6 REPLACING CLUTCH THROWOUT BEARING AND RELEASE FORK... 7 ADJUSTING CLUTCH PEDAL FREE TRAVEL... 8 REPLACING AND ADJUSTING SAFETY START SWITCH 8 DESCRIPTION The clutch for the MF 1105, MF 1135 and MF 1155 model Tractors is of the dry type and uses a single 14 inch metallic type disc equipped with dampener springs. MF 1105 Tractors use a clutch disc with 4 sets of pads and a clutch cover assembly having a 2175 lb. pressure plate load. MF 1135 and MF 1155 Tractors are equipped with a clutch disc having 5 sets of pads and a clutch cover assembly having a 2775 lb. pressure plate load. The main parts of the Tractor clutch are the clutch cover assembly, clutch disc, clutch release mechanism with its connecting linkage and a safety start switch. The safety start switch is located under the clutch pedal and is designed to prevent engine starting until the clutch pedal is fully depressed. SPLITTING TRACTOR BETWEEN ENGINE AND TRANSMISSION 1. Disconnect battery ground cables, remove hood assembly and thoroughly clean engine and surrounding area. IMPORTANT: Make sure to cover air inlet and exhaust openings before cleaning machine. All hydraulic lines and connections must be thoroughly cleaned before they are disconnected to prevent dirt or other foreign particles from engering the system. Also make sure to cap, or otherwise cover all openings after the lines are disconnected. FAILURE TO HEED THIS ADVICE MA Y CAUSE NEEDLESS MALFUNCTION AND COSTL Y REPAIR. The hood removal procedure is as follows: Refer to Fig. 1. a. Remove front and rear side panels from each side of Tractor. b. Remove muffler, radiator cap, air intake cap and the upper and lower grille assemblies. FIG. 1 - c. Either disconnect air intake hose (at hood end) or disconnect and remove the air intake mounting bracket from hood assembly. d. Loosen the four clamps located under rei-!r end of hood. Remove the bolts secl,ing the angle brackets for the exh'lust elbow mounting strap to each side of the hood. NOTE: Air conditioned models only - release hoses from underside of hood. e. Remove bolts securing each front side of hood. f. Lift front end of hood and slide it forward several inches, then remove hood from Tractor. 2. Air conditioned models only - disconnect the two special self-sealing air conditioning hose couplers. See Fig Disconnect rear end of all 6 hydraulic lines located above engine. Disconnect IDENTIFICATION OF SHEET METAL AND RELATED PARTS priority valve from its mounting plate. See Figs. 2 and MF 1155 Tractors - Refer to Figs. 2 and 3 and disconnect the following: From right-hand side: a. Front end of tractormeter cable. b. Throttle control rod and fuel shutoff cable from fuel injection pump. c. Rear end of fuel filter support plate. d. Fuel supply line at flexible hose connection. e. Electrical wires from starter motor. f. Oil pressure gauge line at connection on oil filter head. From left-hand side: a. Temperature indicator sending unit wire. b. Electrical wires from alternator. c. Fuel return line at top of fuel filter and unhook line from clip at base of priority valve support plate. d. Remove hydraulic oil line retaining clamp. CLUTCH - MF 11 05/MF 1135/MF 1155 TRACTORS

9 PART 5 - MULTI-POWER TRANSMISSION DESCRIPTION SPECIAL TOOLS SERVICE INFORMATION SPLITTING TRACTOR BETWEEN ENGINE AND TRANSMISSION... Refer to Part 4 - CONNECTING ENGINE TO TRANSMISSION... Refer to Part 4 - Clutch Clutch REMOVING/INSTALLING TRANSMISSION... DISASSEMBLY OF TRANSMISSION... 2 INSPECTION AND REASSEMBLY OF TRANSMiSSiON... 3 SERVICING MULTI-POWER CLUTCH AND INPUT SHAFT... 5 DESCRIPTION This transmission allows a selection of 12 forward and 4 reverse speed changes. The sliding gears provide 3 forward and 1 reverse speed selections... the Multi-Power clutch pack allows this selection to change to 6 forward and 2 reverse... and a high-low gear set doubles this selection to 12 forward and 4 reverse speeds. Transmission sliding gear selections are made by moving shift rails in the transmission case. The Multi-Power unit consists of a multipledisc hydraulic clutch located on the transmission input shaft. This clutch is engaged by oil pressure from the low pressure circuit of the hydraulic system. A hydraulic control valve (operated by a lever on the instrument panel) controls the oil flow to the clutch pack. When oil is allowed to flow to the clutch, the clutch discs engage and connect the input shaft to the large input gear and the transmission is in "High" Multi-Power. Shutting off the oil supply allows the clutch pack to disengage and a jaw-type overrunning clutch engages the smaller input gear and the transmission is in "Low" Multi Power. The high-low gear set is located in the center housing and connects the transmission output shaft to the differential drive pinion shaft. The high-low shifting mechanism is located directly below the cluster gear on the pinion shaft. The high and low gears turn freely on the pinion shaft and are in constant mesh with the cluster gear. The shift collar hub is splined to the pinion shaft. Moving the shift collar forward connects the large gear to the pinion shaft (Low Range). Moving the shift collar rearward connects the small gear to the pinion shaft (High Range). The High-Low range shift rail has a detent in. high and low positions (there is no neutral position). SPECIAL TOOLS All special tools are used in compiling the "Repair Time Schedule". The following special tools are listed and defined for your convenience. MFN 800 HH - Input Shaft Tube and Seal Remover MFN 800 GG - Input Shaft Retainer Seal Installer MFN 800 K - Reverse Idler Needle Bearing Installer MFN 800 M - Needle Bearing Installer MFN 800 L - Needle Bearing Installer MFN 800 MM - Pilot Drawbar Assembly (consists of MFN 800 A, A 1, B, Rand S) MFN 800 P - Needle Bearing Installer MFN 800 Q - Needle Bearing Installer MFN 800 KK - Driver MFN 800 V - Draw Rod Adapter MFN 800 FF - Draw Rod SERVICE INFORMATION Most of the service procedures pertaining to the transmission will require complete removal of the unit from the Tractor. However, if only the input shaft and Multi-Power clutch pack require servicing, the complete assembly can be removed by splitting between engine and transmission. REMOVING/ INSTALLING THE TRANSMISSION 1. To remove the transmission from the Tractor, split between engine and transmission as instructed in Part 4 - Clutch... then refer to instructions for removal/installation of transmission in Part 6 - "8- Speed Transmission". These procedures are OUTLINED AS FOLLOWS: a. Remove the operator's platf~rm... or tilt cab rearward. b. Disconnect shift linkage, clutch pedal linkage and batteries. c. Disconnect brake lines from master cylinder. d. Remove hydraulic line between priority valve and transfer cap. e. Remove fuel supply line and disconnect PTO line (at right side of case). f. Disconnect line from transmission top cover and lines from front cover assembly (on center housing). g. Disconnect light wires and place out of way. h. Remove instrument console as shown in Fig. 1. i. Drain and remove fuel tanks. j. Drain transmission and center housing (approx. 17 gals. U.S.). k. Place a stand under front of center housing. Then block up under drawbar (at rear) to prevent the center housing and axle from tipping backward when the transmission is removed. Attach a suitable hoist to top of transmission... then remove the retaining bolts and separate transmission from center housing. 2. Reinstall the transmission by reversing the procedures for removal... which are OUT LINED as follows: a. Place a new gasket on center housing and align bolt holes in gasket with two guide bolts. b. Check splined coupling between PTO shafts. The undercut end of the coupler FIG. 1 - REMOVING/INSTALLING INSTRUMENT CONSOLE MULTI-POWER TRANSMiSSION MF 1105/MF 1135/MF 1155 TRACTORS

10 PART 10 - FRONT AXLE AND STEERING Index STEERING WHEEL AND SHAFT ASSEMBLY... 2 Removing/Installing Steering Shaft Assembly... 2 Servicing Steering Shaft Assembly... 2 STEERING CONTROL UNIT... 2 Removing/Installing Steering Control Unit... 2 Servicing Steering Control Unit... 2 Replacing Seals Only... 4 POWER STEERING RACK... 4 Piston and Cylinder Servicing... 4 Housing and Power Rack Servicing (Fixed Guide)... 4 Housing and Power Rack Servicing (Adjustable Guide)... 5 FRONT AXLE Removing/Installing Front Axle Servicing Front Wheel Bearings... 6 Servicing Front Spindle... 6 Toe-In Adjustment FRONT AXLE AND STEERING - MF 1105/1135/1155 TRACTORS

11 PART 11 - HYDRAULIC SYSTEM DESCRIPTION, TROUBLE-SHOOTING, TESTS AND ADJUSTMENTS DESCRIPTION Low Pressure Circuits... 2 High Pressure Circuits... 3 "Charging" Circuit... 2 Brake Circuit... 6 Radial Piston Pump... 2 TROUBLE-SHOOTING CHARTS Auxiliary System Steering System Brake System Point Linkage System Pressures and Flows TESTS AND ADJUSTMENTS PRESSURE AND FLOW REFERENCE CHARTS LOW PRESSURE/LOW VOLUME CIRCUITS (w/condensed TEST PROCEDURES) Differential Lock "Quick-Check" Multi-Power/PTO Valve and Circuits "Charging" Circuit PTO Spool Modulation Low Pressure/Low Volume Circuits Radial Piston Pump HIGH PRESSURE CIRCUITS High Pressure Circuits Auxiliary Control Valve Brake Circuit Adjusting Flow Rate Adjusting Lockout Cartridges Adjusting Detent on Valve Spool "QUICK-CHECK" PROCEDURES Lift Cover and Linkage Control Valve Preparing for Tests PREPARING FOR CIRCUIT TESTING Initial Adjustment of Main Spool BRAKE CIRCUIT Brake Master Cylinder "Bleeding" Brake Circuit Adjusting Push Rods (Pedals) Position Control (1 st Adjustment) Pressure Control (2nd Adjustment) Draft Control (3rd Adjustment) Response Control (4th Adjustment) Control Valve Leakage High Pressure Relief Valve Priority Valve "CHARGING" CiRCUiT Radial Piston Pump Automatic Unloading Valve Volume. Pressure Settings and Adjustments "Charging" Circuit Regulating Valve Main Relief Valve "Charging" Circuit Safety Relief Drain Line Check "Charging" Pump (Dual Element) Steering Control Unit and Rack Pistons I I I IMPORTANT I I I See Part 12 within this Manual to obtain component service procedures. -1~ HYDRAULIC TESTING - MF 11 05/MF 1135/MF 1155 TRACTORS

12 AIR CONDITIONING (Except Compressor Service) SAFETY PRECAUTIONS... 2 DESCRIPTION... 2 Refrigerant Cycle... 2 Refrigera nt... 2 Handling Refrigerant... 3 SPECIAL TOOLS... 3 SERVICING THE REFRIGERATION SYSTEM... 3 Performance Test... 4 False Compressor Seizure Checking for Leaks... 4 Compressor Oil... 4 Quick Check... 5 Checking Oil... 5 Attaching the Gauge Set Compressor Port Identification Discharging the System... 6 Evacuating the System... 6 Charging the System... 6 Refrigerant Disconnecting the Gauge Set... 7 SERVICING SYSTEM COMPONENTS... 7 Condenser... 7 Receiver-Dehydrator... 7 Expansion Valve Opening Test... 7 Closing Test... 8 Servicing... 8 Evaporator... 8 Compressor... 8 (See also Compressor Servicing Section of this Part) SERVICING THE NON-REFRIGERATION SYSTEM... 8 Compressor Drive Belt... 8 Blower Switch... :... 8 Temperature Control Switch... 8 Motor... 8 Cab Air Intake Filter... 9 Tractor Engine... 9 SERVICE DIAGNOSIS... 9 Refrigerant System... 9 Electrical Checks... 9 Trouble-Shooting Charts... 9 CAB AND AIR CONDITIONING