Servic

e M

an

ual

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.

MF154/154-4,MF174/174-4

MF184/184-4,MF194/194-4

MF254, MF274

Transmission & Steering

MH-S-MF154+

,,-I '

(

J

WHEEL TRACTQRS MF 254 MF 154/154-4

Massey Ferguson

MF 274 MF 174/174:..4 MF 184/184-4 MF 194/194-4

SPECIFICATIONS, TECHNICAL DATA AND REPAIR DIAGRAMS

TRANSMISSION AND STEERING

FOREWORD TABLE

TABLE OF CONTENTS

OVERALL SPECIFICATIONS A/0

TRANSMISSION CLUTCH T/1

GEARSHIFT AND CROWN WHEEL & PINION T/2 BRAKES T/3

FINAL DRIVES AND DRIVE WHEELS T/4 P.T.O. and DRIVE PULLEY T/5

STEERING MECHANICAL STEERING D/1 HYDROSTATIC STEERING D/2

FRONT AXLE AND STEERING -WHEELS D/3 FRONT DRIVE D/4

~ .. AGCO ALL RIGHTS RESERVED. Not to be reproduced without permission.

Your Agriculture Company Use subject to License/Copyright.

EDITED BY TECHNICAL PUBLICATION DEPARTMENT

TABLE OF CONTENTS OVERALL SPECIFICATIONS - Cross-section view of tractor - Longitudinal-section of transmission

Identification data • Dimensions and Weights - Transmission .

Clutch - Gearshift Transmission diagrams Differential - Final Drives Brakes - Power Take Off - Auxiliary Drive Shaft Towing Unit - Ballasting .

- Steering Mechanical steering - Front Axle - Front Drive

Rims and Tyres Lubricants

TRANSMISSION Clutch

Specifications and Data Tightening torques . Clutch longitudinal-section Clutch adjustment

Gearshift • Crown Wheel and Pinion Specifications and Data . Tightening torques . Cross - and longitudinal-sections of transmission Crown wheel and pinion adjustment

Brakes Specifications and Data - Tightening torques Brake adjustment

Final Drives and Wheels Specifications and Data - Tightening torques Final drive longitudinal-section

Power Take-off and Drive Pulley Specifications and Data . Tightening torques . One and two speed PTO longitudinal-section Drive pulley sectional view

STEERING Mechanlcal Steering

Specifications and Data - Tightening torques Bearing and rocker shaft end float adjustments

Hydrostatic Steering Specifications and Data - Control Valve - Steering cylinders - Hydraulic pump Pressure relief valve - Oil reservoir Tightening torques . Hydrostatic steering system diagram Control Valve Operation . Rotor Drive Shaft Timing - Hydraulic Pump Section Pressure Relief Valve Setting Hydrostatic Steering Cylinder Section Cylinder End Stripping and Reassembly • Circuit Air Venting Trouble Shooting

Front Axle and Wheels Specifications and Data - Axle Hinge - Stub Axle Hinge - Wheel Hubs - Front Wheels Tighten ing Torques . Spindle and Axle Pivot Section - Front Axle and Wheel Checks

Front Drive Specifications and Data - Crown Wheel and Pinion - Differential - External Axle -Shafts and Spindles - Epicyclic Reductions - Axle Hinge - Transmission Case -Front Drive Wheels . Tightening Torques . Front Drive Assembly Section Crown Wheel and Pinion Adjustment Final drive pin bearing pre-load adjustment, with calculation of relative shims

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4 5 7 7 7 8 9

10 10 10 11 11

12 13 14 15

16 18 19 21

28 29

30 31

32 33 34 35

36 37

38 39 40 41 43 44 45 46 47

49 50 51

53 55 57 59 61

3

TRANSMISSION OVERALL SPECIFICATIONS TD/0-7

Front Drive Malleable cast iron front axle swinging around two centre supports.

Trasmission through centre differential and wheel hub located epicyclic reduction units.

RIMS AND TYRES

RIMS TYRES Tractor

Type Front Front Rear Front Front 2WD 4WD 2WD 4WD Rear

154 4 .00E-16 W8-20 W12-28 6.50-16 (6 Pr) 9.5/ 9-20 (4 Pr) 13.6/12-28 (6 Pr) 254* 4 .00E-16 W7-24 W12-28 6.50-16 (6 Pr) 8.3/ 8-24 (4 Pr) 14.9/13-28 (6 Pr)

4 .00E-16 W7-24 W10-32 6.50-16 (6 Pr) 8.3/ 8-24 (4 Pr) 12.4/11-32 (6 Pr)

174 4.00E-16 W7-24 W12-28 6.50-16 (6 Pr) 8.3/8-24 (4 Pr) 14.9/13-28 (6 Pr) 274* 5 .50E-16 W7-24 W13-30 7 .50-16 (6 Pr) 9.5/9-24 (4 Pr) 14.9/13-30 (6 Pr)

5.50F-16 W9-24 W11-36 7.50-16 (6 Pr) 11 .2/10-24 (4 Pr) 12.4/11-36 (6 Pr)

184 5.50F-16 W9-24 W13-30 7.50-16 (6 Pr) 11.2/10-24 (4 Pr) 16.9/14-30 (6 Pr) 5.50F-16 W9-24 W11-36 7 .50-16 (6 Pr) 11.2/1 0-24 (4 Pr) 13.6/1 2-36 (6 Pr)

194 5.00F-20 W10-24 W14L-30 7.50-20 (6 Pr) 12.4/11-24 (4 Pr) 18.4/15-30 (6 Pr) 5.00F-20 W10-24 W11-38 7.50-20 (6 Pr) 12.4/11-24 (4 Pr) 13.6/1 2-38 (6 Pr) 5.50F-16 W9-24 W14L-30 7.50-16 (6 Pr) 11.2/10-24 (4 Pr) 16.9/14-30 (6 Pr) 5.00F-20 W10-24 W14L-34 7.50-20 (6 Pr) 12.4/11-24 (4 Pr) 16.9/14-34 (6 Pr)

LUBRICANTS

Renew LUBRICANTS ASSEMBLY every Lt. .......... (gals)

ESSO MOBIL SHELL hours

Torque

Gearbox & hydraulic Fluid 62 Mobilfluid S 7884 lift 1500 21,5 Torque 422 S6332A

Fluid 56

Final drive housings - 154/174 & 254/274 1500 2,2 - 184 & 194 1500 3,8

Drive pulley 1500 1,3 Steering box 1500 1,5 Esso Gear

Mobilube SPIRAX 4WD Differential case 1500 4,5 Oil HD 90 HD 90

4WD Epicyclic GH 90 Reduction Units (each)

- 154/174&254/274 1500 1,5 - 184 & 194 1500 2

-

Automatic ATF Hydrostatic steering 1500 1,9 Trasmission ATF 220

Fluid Dexron

Steering wheel hubs Multi· Grease Alvania Grease guns purpose MP Grease 2

Grease H

* These models 4 WO only. 11

_)

STEERING MECHANICAL STEERING D/1-2

Fig. 20 - Steering Box Section View.

S - Bearing adjusting shims.

1 - Cam shaft; 2 - Felt bush; 3 - Steering box top cover; 4 - Cover setscrews; 5 - Top and bottom ball bearings; 6 - Side cover setscrews; 7 - Adjusting screw; 8 - Steering box side cover; 9 - Arm nut; 10 - Steering drop arm; 11 - External gasket; 12 - Oil seal; 13 - Steering box bushes; 14 -Rocker shaft; 15 · Steering box; 16 · Setscrew locknut.

BALL BEARING ADJUSTMENT. Lubricate all parts with fresh oil, then refit the top cover (3) without adjusting shim (Sr) positioning and secure to the box (15) by two of the diagonal setscrews (4). Progressively and alternatively tighten the ten setscrews until the shaft (1) end float is 0-0.05 mm. (0-.002 in) thus allowing the two bearings (5) to work in better conditions. Check the clearance between the top cover flange and the steering box, taking two readings at the feeler gauge in opposite positions, then take the mean of the two readings. Insert a thickness of shims (Sr) to the above determined value between the cover and the box. When reassembly is over, check that the end float of the steering drive shaft is still within the recommended limits.

ROCKER SHAFT END FLOAT ADJUSTMENT To carry out this operation correctly, move the driving wheel to the centre section of the arc of rotation and slacken the screw (7) until the driving wheel dos not resist to rotation. Still keeping the driving wheel in centre position of rotation, progressively tighten the screw (4) until the rotation moment of the shaft is 0.07 to 0.23 kgm (0.51 to 1.66 ft.lbs). Lock the screw by the nut tightened to a torque of 2.07 kgm. (14.97 ft.lbs.).

N · Fit the steering drop arm (10) on the rocker shaft (14) so that the arm is 11 back from vertical when the wheels are straight.

37

CONTENTS

CONTENTS

FOREWORD Page 3

GENERAL SPECIFICATIONS • 4 Hydraulic Pump • 4 Hydraulic Lift • 4 Three Point Linkage • 4

LUBRICANTS • 5 DESCRIPTION OF THE HYDRAULIC LIFT • 6 HYDRAULIC LIFT OPERATION • 6

Position Control • 7 Float Position • 7 Draft Control • 7

DESCRIPTION OF THE HYDRAULIC CIRCUIT • 7 Neutral Phase • 8 Return Phase • 8 Pressure Phase • 11

DESCRJPTION OF THE MECHANl·CAL OPERATION OF THE HYDRAULIC LIFT • 11 Position Control . • 11 Draft Control • 13

HYDRAULIC LIFT OVERHAUL • 15 SERVICE TOOLS • 15 Removal • 16 Stripping • 16 Parts Inspection • 20 Reassembly and Replacement • 22

HYDRAULIC LIFT ADJUSTMENTS • 27 Adjustment of the control sector to hydraulic lift levers coupling (only Crawler Trac-

tors) • 27 Adjustment of the spool valve control internal levers • 28 Adjustment of the hydraulic lift arms position . • 28 Adjustment of the hydraulic lift sensitivity . • 29 Position Control Adjustment • 30 Adjustment of the Swinging Support • 32 Draft Control Adjustment • 33

SPOOL VALVE SERVICING AND ADJUSTMENTS. • 34 MECHANICAL INSPECTION • 35

_) Control Valve Spool • 35 Servovalve Spool • 36

CONTENTS

Lowering Rate adjuster Safety Valve

REASSEMBLY

CONTROL VALVE HYDRAULIC TESTS Safety Valve Leakage Test . Overpressure Valve Setting and Return Leakage Test Main Relief Valve Setting and Pressure Side Leakage Test

EXTEANAl PRESSURE POAT

AUXILIARY CONTROL VALVE

HYDRAULIC PUMP .

Hydraulic Pump Overhaul Removal

Disassembly Parts Inspection Reassembly

Replacement

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HYDRAULIC LIFT FAULT FINDING • TECHNICAL DAT A, FITIING TOLERANCES AND LIMITS OF THE

COMPONENT PARTS MAIN HYDRAULIC LIFT

•

2

ATTENTION

Before s,ervii·c1ing or overhauHng the HydrauHc System, precautions must always be taken to prevent the ingt'ess of dust and d,irt into any part of the system. Absolute cleanl-iness of the working area ·and components is essential at all times.

The performance and efficiency of the system may be severely affected due to damage caused by foreign par!Jides; particularly to the hydraul,ic j)Ump and spool valve.

If '!)he machine has only been 1n operat,ion for short periods of service the oi-1 in the hydraulic system should be deaned prfor to its first s·ervioe. To clean the ~M. ~irst drain the system (see

, MAINTENANCE), then fli'lter the oll carefully through a very fine ste·el mesh or gauze.

Befor,e replenish•ing the system, thoroogMy flush out the hydrauliic pump, reservoir and pipes and always renew the fi'lter element.

37

37

37

37 3g

40 42

4S

47 49 49 49 49 50 51 53

54

55

Fig. 10 · Removal (replacement) of the oil filter element.

9 . Filter element; 30 · Magnetic filter cap.

REMOVAL

To remove the hydraulic lift assembly from the gearbox:

1. Remove the driving seat.

2. Remove the three po·int linkage assembly from the IHt arms.

3. From the container located at the inlet of the hydraul·ic ,pump, remove cover (30, fig. 10) and oil frlter (9). collecting the oil draining from the filter in a suitabl,e container. Remove the inlet and outlet ?ipes from the hydraulic tift.

4. Remove screw (74, fig. 19) limiting the swing-

16

HYDRAULIC LIFT OVERHAUL

ing support (36) stroke. Thi& screw is located on the rear side of the gearbox.

5. On crawler tractors, remove the two connecting rods with the control lev~rs since the control lever sector is located on the R.H. fender.

6. Position plate C 101 S (A, fig. 9a) (refer to the drawing in fig. 9b) on top of the hydraulic lift body. Use a hoist to remove the hydraulic lift assembly from the gearbox.

STRIPPING

You wi'II find hereafter the description of the operations to carry out a general overhaul. Should ,it be necessary to work on a component part or assembly, the procedure can be changed to avoid removing those parts which are not affected.

As a first step, position the hydraulic lift upside down i1n a Vli·ce, so that the protruding end of tool C 101 S inserts between the jaws of the vice (fig. 11). Once tightened in the vic-e, the hydrau­lic lift is well anchored and will be accessible in all of its parts.

1. Remove the three screws securing the oil inlet pipe and remove the pipe from the hydrau­lic lift body together with the oil seal.

2. Removal of the Spool Valve

a) Remove the setscrews (75, ~ig. 19) locat·ing the plate (76) and withdraw the spool from the hydrau1l,ic lift (fig. 12);

b) if the thr.ee seals (37) show signs of wear or damage, remove them from the spool valve (20);

c) remove the four Allen screws (38) and with­draw the spool valve body (23) from the hydraullc lift (fig. 13);

d) check the oil seals (40, fig. 13) for condition and, if necessary, remove them from their seats;

NOTE: Stripping of the spool valve can be done when the