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MH-S-MF40B TLB M M a a s s s s e e y y H H a a r r r r i i s s M M a a s s s s e e y y F F e e r r g g u u s s o o n n Service Manual MF40B Tractor, Loader & Backhoe 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. Service Manual

Massey Ferguson 40B Industrial Tractor ... - Tractor Manuals

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Massey Ferguson 40B Industrial Tractor Service ManualService Manual MF40B
Tractor, Loader & Backhoe
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.
Se rv
ic e
M an
ua l
CONTENTS
Part 3 - Engine
Part 4 - Clutch
Part 5 - Transmission
Part 7 - PTO
SERVICE PROCEDURE RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
TIGHTENING TORQUE RECOMMENDATIONS (GENERAL GUIDE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PRODUCT CROSS REFERENCE FOR SEALANTS AND METHOD OF APPLYING . . . . . . . . . . . . . . . . . . . . . . . . 6 Liquid Locking Metal Sealants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CONVERTING UNITS OF WEIGHTS AND MEASURES ................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10 Definition of Terms and Selection of Units . . . . . . . . . . . . . . . . . . . . . . . . ............................. . 10
14 15
"Rounding-Off'" Converted Units ............................. . Conversions Between Units .................................................................... .
CONVERSION TABLES ............................................................................ 18 How to Use Conversion Tables .................................................................. 18 Table 1 - Inches and Millimetres, Celsius and Fahrenheit ........................................ 19 Table 2 - Tightening Torques (ft.lbs to kg.m) - NOT "SI" . . . . . . . . . . .............................. 20 Table 3 - Tightening Torques (kg.m to ft.lbs) - NOT "SI" ......................................... 20 Table 4 - Area (Square Inches to Square Centimetres) ........................................... 20 Table 5 - Area (Square Feet to Square Metres) .................................................. 21 Table 6 - Bending Moment or Torque (Inch Pounds to Newton Metres) ................... ,. ....... 21 Table 7 - Bending Moment or Torque (Foot Pounds to Newton Metres) ............................ 21 Table 8 - Bending Moment or Torque (Kilogram-force-metre to Newton Metre) ..................... 22 Table 9 - Force (Pounds-force to Newtons) ...................................................... 22 Table 10 - Length (Microinches to Micrometres) ................................................. 22 Table 11 - Length (Hundredths of an Inch to Millimetre) .......................................... 23 Table 12 - Length (Inches to Millimetres) ....................................................... 23 Table 13 - Mass (Pounds to Kilograms) ......................................................... 23 Table 14 - Power (Horsepower to Kilowatts) ..................................................... 24 Table 15 - Pressure or Stress (Pounds Per Square Inch to Kilopascals) ............................ 24 Table 16 - Volume or Capacity (Cubic Inches to Cubic Centimetres) ............................... 24 Table 17 - Volume or Capacity (Cubic Inches to Litres) ........................................... 25 Table 18 - Volume or Capacity (Cubic Feet to Cubic Metres) ...................................... 25 Table 19 - Volume or Capacity (Cubic Yards to Cubic Metres) ..................................... 25 Table 20 - Volume or Capacity (U.S. Fluid Ounces to Cubic Centimetres) .......................... 26 Table 21 - Volume or Capacity (U.S. Liquid Pints to Litres) ........................................ 26 Table 22 - Volume or Capacity (U.S. Liquid Quarts to Litres) ...................................... 26 Table 23 - Volume or Capacity (U.S. Liquid Gallons to Litres) ..................................... 27
-1- IMPORTANT PROCEDURES AND DATA
Page TESTING AND TROUBLE-SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Checking Pump Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Filling and Removing Air From System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ENGINE DRIVEN STEERING PUMP................................................................. 3 Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Servicing ............................................................................. Refer to CS-18
Pivot Pin Bushings .............................................................................. 10
CS-18 2nd Issue ENGINE DRIVEN STEERING PUMP (Parker Hannifin) CS-21 1st Issue STEERING CONTROL UNIT
This Part contains three separate sections, each beginning with Page 1 and Figure 1. Place CS sections at end of Part, in numerical order.
A CAUTION: To avoid personal injury, use positive acting jacks, hoists and secure blocking when raising, lowering or supporting Tractor, Loader, Backhoe and components.
Refer to Loader and Backhoe Parts in this manual for additional precautions.
-1- MF 40B - FRONT AXLE AND STEERING
SPECIFICATIONS ............. . General Specifications .............. . Tightening Torques ........... . Engine Overhaul Specifications ..... . Lubrication System Specifications .. . Fuel System Specifications ....... . Cooling System Specifications ... .
ENGINE REMOVAL AND INSTALLATION .. Removing Engine Installing Engine.
CYLINDER HEAD . Removing Cylindt!r Head ...... . Disassembling Cylinder Head ..... . Cylinder Head lnsp,!ction and Servicing ......... . Valve Guides . . . . . . . . . . . . . ....... . Valves and Valve St!ats .................... .
Servicing Valves and Valve Seats ............ . Installing Exhaust Valve Seat Inserts ......... .
Valve Springs . . . . ..................... . Tappets .............................. . Rocker Arm Shaft Assembly ................ .
Disassembling and Inspecting
2 2 2
8 8
10
12 12 12 12 14 14 14 14 16 16 16
Rocker Arm Shaft Assembly . . . . . . . . . . . . . . . 16 Reassembling Rocker Arm Shaft Assembly. . . . . . . . . . . . . . . . . . . . . . . . 1 6
Reassembling Cylinder Head . . . . . . . . . . . . . . . . . 16 Installing Cylinder Head . . . . . . . . . . . . . . . . . . . . 17 Retorquing Cylinder Head ................... 17 Adjusting Valve Lash . . . . . . . . . . . . . . . . . . . . . . 18
PISTONS AND CONNECTING RODS ............ 19 Removing Piston/Connecting Rod Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Separating Piston from Connecting Rod .... : . . . . . . . . . . . . . . . . . . . . 1 9 Connecting Rods ......................... 19
Connecting Rod Alignment. . . . . . . . . . . . . . . . 1 9 Pistons and Rings ........................ 20
Pistons ............................. 20 21 Piston Rings ......................... . 21 Rejoining Piston to Connecting Rod ........... .
Installing Piston/Connecting 21 Rod Assembly ......................... .
CYLINDER BLOCK AND LINERS ............. . 23
Inspecting and Servicing 23 Cylinder Block and Liners .................. . 23 Replacing Cylinder Liner .................. .
CRANKSHAFT AND MAIN BEARINGS ........... 25 Crankshaft End-Play . . . . . . . . . . . . . . . . . . . . . . 25
Checking Crankshaft End-Play .............. 25 Replacing Thrust Washers . . . . . . . . . . . . . . . . . 25
Removing Crankshaft ...................... 25 Inspecting Crankshaft. . . . . . . . . . . . . . . . . . . . . . 26 Regrinding Crankshaft . . . . . . . . . . . . . . . . . . . . . 26 Installing Crankshaft . . . . . . . . . . . . . . . . . . . . . . 26 Rear Crankshaft Oil Seal. . . . . . . . . . . . . . . . . . . . 27
Replacing Oil Seal . . . . . . . . . . . . . . . . . . . . . . 27 Installing Oil Seal Retainer ................ 28
FLYWHEEL. ............................. 29 Removing Flywheel and Transmission
. Adapter Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Replacing Ring Gear . . . . . . . . . . . . . . . . . . . . . . 29 Installing Flywheel and Transmission Adapter Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . 29
TIMING CASE AND DRIVE ............. ' ...... 31 Timing Gear Case ....................... · 31
Replacing Front Crankshaft Oil Seal .......... 31 Installing Timing Gear Cover ............... 31 Removing Timing Gear Housing. . . . . . . . . . . . . 32 Installing Timing Gear Housing ............. 32
Timing Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Timing Gear Backlash and End-Play .......... 33 Removing Timing Gears . . . . . . . . . . . . . . . . . . 33 Replacing Idler Gear Bushings . . . . . . . . . . . . . . 34 Installing Timing Gears and Retiming Engine . . . . . . . . . . . . . . . . . . . . . . . 34
Camshaft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Removing Camshaft. . . . . . . . . . . . . . . . . . . . . 35 Inspecting Camshaft Thrust Washer and Tappets ..................... 35 Installing Camshaft ..................... 35 Tachometer Drive ...................... 35
Checking Valve Timing ..................... 36
Removing Oil Pan . . . . . . . . . . . . . . . . . . . . . . 37 Installing Oil Pan ....................... 37
Oil Pump .............................. 37 Oil Pump Idler Gear Backlash and End-Play . . . . . . . . . . . . . . . . . . . 37 Removing Oil Pump ..................... 37 Disassembling Oil Pump . . . . . . . . . . . . . . . . . . 37 Inspecting Oil Pump ..................... 38 Reassembling Oil Pump . . . . . . . . . . . . . . . . . . 38 Installing Oil Pump ..................... 39
Replacing Oil Filter and Crankcase Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
-1- MF 40B - ENGINE
PAGE FUEL AND AIR SYSTEM .................... 40
Air Cleaner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Servicing Outer Filter Element .............. 40 Servicing Inner Filter Element .............. 40
Fuel Lift Pump .......................... 40 Removing and Disassembling
Fuel Lift Pump ........................ 40 Reassembling and Installing
Fuel Lift Pump ....................... .
40 41 41 42 42
Injection Pump Timing ............ _. ...... 42 Adjusting Fuel Shut-Off Control ............ 43 Adjusting Engine Speed .................. 43 Adjusting Throttle Linkage ................ 43
Fuel Injectors . . . . ..................... 44 Removing Injectors ..................... 46 Testing Injectors ....................... 46
PAGE Disasse·inbling Injectors ................... 47 Cleaning and Inspecting Injectors ............ 48 Assembling Injectors .................... 50 Installing Injectors ...................... 50
Fuel Lines and Connections .................. 50 Low Pressure Fuel Lines .................. 50 High Pressure Injection Lines ............... 50
Air-Bleeding Fuel System ................... 50
Reassembling Water Pump ................ .
52 52 52 52 53 54 54 54 54 54
TROUBLE-SHOOTING ...................... 56
4.203 Direct Injection Diesel Engine.
Thoroughly clean and inspect all components during
servicing. Always plug or otherwise cover open fuel and oil
lines and fittings to prevent entry of dirt.
Right and left-hand sides mentioned within text refers
to engine as viewed from rear of flywheel. Direction of
engine crankshaft rotation is viewed from crankshaft pulley end.
ENGINE SERIAL NUMBER
located on left side of cylinder block towards rear.
Fig. 1. ALWAYS GIVE COMPLETE ENGINE SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.
-2-
SEPARATING/REJOINING TRACTOR .......... . /
Inspecting Dual Clutch .................... . Reassembling Dual Clutch .................. . Installing Dual Clutch ..................... . Adjusting Dual Clutch .................... .
2
10
SERVICING SPLIT TORQUE CLUTCH ............ 11 Removing Split Torque Clutch ................ . Disassembling Split Torque Clutch ............. . Inspecting Split Torque Clutch ................ . Reassembling Split Torque Clutch ............. . Installing Split Torque Clutch ....... . Adjusting Split Torque Clutch ................ .
11 11 11 12 12 12
SERVICING BEARINGS AND RELEASE MECHANISM. 13 Pilot Bearing ............................ . Release Bearing. Release Fork
ADJUSTING CLUTCH LINKAGE ....
13 13 13
4. Remove release lever fulcrum pins, Fig. 12, and torsion springs.
5. Loosen nuts on "T" bolts evenly until coil springs are
fully extended and cover is free. 6. Remove "T" bolts.
7. Lift clutch cover off pressure springs, Fig. 13.
8. Remove: a. Coil springs and insulating washers.
b. Belleville spring.
f. Secondary clutch adjusting screws and lock nuts.
9. Drive lower pins out of release lever links, Fig. 14, and
remove release lever and links. 10. Turn cover over and drive out retaining pins, Fig. 15.
INSPECTING DUAL CLUTCH
1. Inspect all parts for wear or damage. Replace as needed. a. Flywheel friction face or clutch primary pressure
plate may be resurfaced within reasonable limits, pro­ viding same amount of material is removed from clutch mounting surface on flywheel.
Fig. 12-Removing Release Lever Fulcrum Pin
Fig. 13-Removing Clutch Cover
Fig. 14-Removing Lower Pivot Pin
b. Original distance between clutch mounting surface and friction face on flywheel is 1.7175-1.7225 inches. Check this dimension whenever new pressure plate or
clutch assembly is installed. 2. Correct coil spring color code is violet.
a. Compressing each coil spring to 1.820 inches should
give a 134 ± 6.7 lbs. load. b. Free length of new spring should be 2.794 inches. c. Replace insulating washer each time a spring is re­
placed.
1. Retainer Pins
REMOVING/INSTALLING TORQUE CONVERTER .................................................... 12
SERVICING MANUAL SHUTILE TRANSMISSION - WITH PTO ...... *Refer to Separate Publication CS-22
SERVICING MANUAL SHUTILE TRANSMISSION - WITHOUT PTO INPUT SHAFT . . . . . . . . . . . . . . . . . . . . . . . . .......... *Refer to Separate Publication CS-45
SERVICING INSTANT REVERSE (HYDRAULIC SHUTILE) AND TORQUE CONVERTER . . . . . . . . . . . . . . . . . . . . . . . . . ......... *Refer to Separate Publication CS-44
TROUBLE SYMPTOMS OF INSTANT REVERSE (HYDRAULIC SHUTILE)*Refer to Separate Publication CS-44
*IMPORT ANT:
This reference is a separate componenr service publication which contains disassembly, inspection and reassembly instructions after transmission has been removed. These instructions are filed under this divider . .. and are identified by their CS number printed in the lower right-hand corner on each odd numbered page (beginning with a Page 1).
SERVICE INFORMATION
Many of the service procedures may be performed WITHOUT complete removal oftransmission assem­ bly from Tractor. It will require good judgement by the serviceman as to necessity for complete removal of transmission while considering the extent of ser­ vicing to be performed.
1. The following information pertains to 8-Speed Transmissions:
a. Although reference service publication CS-17 shows a regulating valve installed on input shaft retainer ... this valve is not used in this Tractor application. Also the supply line shown routed through transmission case is not installed. The
-1
brake cross shaft shown through front of case member (beneath clutch release bearing) is not installed in this location for this Tractor model. However, these minor variations will not affect BASIC servicing.
b. Main input shaft retainer and PTO input shaft (with their related seals and bearings) may be ser­ viced by separating Tractor between engine and transmission ... this "split" will also allow servic­ ing engine clutch release bearing.
c. Dual range planetary may be serviced by separating between transmission and center hous­ ing. If shift cover is removed after this "split" ...
MF 408 - TRANSMISSIONS
CONTENTS
PAGE
ROPS (ROLL-OVER PROTECTIVE STRUCTURE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
AXLE HOUSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Differential Lock Adjustment... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Brake Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Brake Disc Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Axle Planetary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...................................... Refer to CS-47 Differential Lock . . . . . . . . . . . . . . . . . . . . . . . . . . ..................................... Refer to CS-47 Brakes . . . . . . . . . . . . . . . . . . . . . . . . ..................................................... Refer to CS-47
DRIVE PINION REMOVAL ....
CENTER HOUSING ................................................................................ 10
CS-53 .................................................... Drive Pinion, Differential and Bearing Pre-Load
NOTE: This Part Contains 3 sections of material, all beginning with Page 1 and Figure 1.
A CAUTION: To avoid personal injury, use positive acting jacks, hoists and secure blocking when raising, lowering or supporting Tractor, Loader, Backhoe and components.
-1- MF 40B - TDL DRIVE AXLE AND BRAKES
PTO SHAFT AND SEAL ......................................................... , .................. 1 Servicing....................................................................................... 1
GROUND SPEED PTO GEARS... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Drive Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Driven Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
NO PTO WITH FERGUSON HYDRAULIC PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INDEPENDENT PTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Testing......................................................................................... 5 Trouble Shooting................................................................................ 6 Pressure Regulating Valve........ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Clutch Pack..................................................................................... 7
HYDRAULIC PUMP AND PUMP DRIVE ............................................. Refer to Part 8, CS-26
CS-54 INDEPENDENT PTO CLUTCH PACK SERVICE
This Part contains two separate sections, each beginning with Page 1 and Figure 1.
h, CAUTION: PTO shaft cover and PTO shield must be replaced when servicing is completed, ~ to avoid possible injury from rotating shaft.
PTO SHAFT AND SEAL SERVICING
1. Drain center housing. 2. Remove pto shield, beam bracket, 1, and retainer
plate, 2, Fig. 1. 3. Remove pto seal retainer, 3, Fig. 1. 4. Withdraw pto shaft, Fig. 2.
Fig. 1
5. Install pto shaft front bearing, Fig. 3, when required. Left axle housing and differential are removed to reach bearing.
6. Fig. 4, remove 0-ring, 1, from seal retainer, 2. Remove snap ring, 3, and press bearing, 4, from shaft.
7. Fig. 5, in seal retainer, 1, seal shield, 2, is pressed to seat with inside protruding toward seal.
Fig. 2
CONTENTS
PAGE
SERVICE INFORMATION........................................................................... 2 Special Tools and Test Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3-Point Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Hydraulic Lift Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3-Point Linkage Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Ferguson Hydraulic Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Auxiliary Hydraulics - IPTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
HYDRAULIC LIFT COVER .......................................................................... 13 Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Servicing Lift Cover WITHOUT Mounted Dashpot ............................ *Refer to Publication CS-41
FERGUSON HYDRAULIC PUMP .................................................................... 14 Removal/Installation ............................................................................ 14 Servicing Ferguson Pump WITH Mounted Servo-Valve ....................... *Refer to Publication CS-43
AUXILIARY HYDRAULICS - IPTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Removal/Installation of Pump and Drive Train .................................................... 16 Servicing Pump and Drive Train ............................................ *Refer to Publication CS-26
*IMPORTANT
This Part contains separate Component Service Publications (referred to as CS-_) with instructions that pertain to bench servicing of assemblies ... AFTER they have been removed. These publications may be found under this same divider tab ... immediately following this Part and are identified by the reference publication number printed in the lower right-hand corner of each odd numbered page.
The service procedures within this Part pertain to the 3-Point Linkage and Auxiliary Hydraulic Pump (/PTO) ONLY ... and their related components. To obtain instructions for other systems (i.e.: Steering, Independent Power Take-Off, etc.) refer to the appropriate Part (within this Manual) that pertains to the system.
-1- MF 408 AND 50C -
INTERNAL HYDRAULICS
Charging and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Checking State of Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Testing Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Specific Gravity Cell Comparison Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Load Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Full Charge Hydrometer Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.
ALTERNATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Service Information .............................. : ............................................... .
Alternator Precautions .................................................... · .................... . Alternator Operation ......................................................................... .
Alternator Overhaul ............................................................................ .
Alternator Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Bearing Replacement and Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Alternator Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Alternator Component Testing and Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Rotor Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Slip Ring Servicing ........................................................................... . Stator Checks ................................................................................ . Brush Holder and Regulator Check ............................................................ . Diode Trio Check .............................................................................. . Rectifier Bridge Check ........................................................................ .
ST ARTER MOTOR ......................................... , ... : ................................... . Trouble-Shooting Starter Circuit ................................................................. .
Starter Circuit Inspection ..................................................................... .
Starter Motor Disassembly .................................................................... . Field Frame Assembly ........................................................................ . Solenoid Assembly ........................................................................... . Starter Motor Cleaning and Lubrication ........................................................ . Starter Motor Reassembly .................................................................... .
Starter Motor Component Testing and Servicing ................................................. . Brushes and Brush Holders Inspection ......................................................... . Armature Checks and Servicing ............................................................... . Field Coil Checks ............................................................................. . Solenoid Checks ............................................................................. . Pinion Clearance ............................................................................. .
WIRING DIAGRAMS .............................................................................. .
16 16 17 18 19 19 19 19 19 20 20 21 22
-1- MF 408 ELECTRICAL SYSTEM
HYDRAULIC SYSTEM INFORMATION - MF 32A. MF 34A AND MF 300A LOADERS.................... 3 System Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Component Location and Operating Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
TROUBLE-SHOOTING ................................................ · .............................. 13 Trouble Symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TESTS AND ADJUSTMENTS ........................................................................ 16. Checking and Adjusting System Main Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Testing and Adjusting Circuit Reliefs (Within Valve)................................................. 17 Testing for Valve Spool Leakage and Checking Spool Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Testing "Load Checks" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Testing for Internal Cylinder Leakage .............................................................. 19 Checking Pump Efficiency (GPM).................................................................. 19
HYDRAULIC PUMP SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Information ...................................................................................... 21 Disassembly ..................................................................................... 21 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 "Breaking-In" New or Rebuilt Pump............................................................... 22
CONTROL VALVE SERVICING ....................................................................... 23 Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Disassembly ..................................................................... , . . . . . . . . . . . . . . . 25 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
DOUBLE-ACTING CYLINDERS ....................................................................... 29 Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Service Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Oil FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Suction Filter - MF 32A and MF 34A Loaders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Suction Filter - MF 300A Loader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Return Filter ..................................................................................... 39
BACKHOES
-1- MF - LOADERS