________________________________________________________________________________
Massey Ferguson 5465, 5470, 5475 - Hand brake unit and control
The hand brake assembly is fitted on the pinion. It consists of a
mechanism placed between three friction discs splined to the pinion. The
mechanism comprises two cast iron plates held by springs and separated
by ball bearings housed in rails. The three discs are fitted to the
pinion as follows: two discs separated by an intermediate plate between
the thrust plate (29) and the mechanism, disc between the mechanism and
the cover plate (24).
Hand brake operation
When the hand brake lever in the cab is pulled, the cam (14) is moved
via the pin (20). The cam pushes the rod (13) which causes the plates of
the mechanism (31) to rotate and move apart. The discs (30) are then
compressed between the moving plates (31), the intermediate plate (34),
the cover plate (24) and the thrust plate (29), preventing the pinion
from rotating. When the hand brake lever is released, the spring (17)
brings the cam (14) back to the rest position and the mechanism is
returned by its springs.
Parts list - (1) Circlip (2) Gear (3) Stud (4) Nut (5)
Gear plate (6) Pin (7) Clevis (8) Pin (9) Pin (10) Left-hand cover plate
(11) Plug (12) Seal (13) Rod (14) Cam (15) Circlip (16) Finger (17)
Spring (18) Centring pin (19) Seal (20) Control pin (21) Snap ring (22)
Washer (23) Finger (24) Cover plate (25) Screw (26) Pinion (27) Shim(s)
(28) Screw (29) Thrust plate (30) Discs (31) Mechanism (32) "O" ring
(33) Retaining ring (34) Intermediate plate
Massey Ferguson 5435, 5445, 5455, 5460, 5465,
5470, 5475 - Hand brake disassembly
Drain the rear axle housing. Chock: the front wheels of the tractor,
between the frame and the front axle. Raise the MF 5435, 5445, 5455,
5460, 5465, 5470, 5475 tractor using a jack. Place axle stands in
position. Remove the rear wheels. Remove the right and left-hand
hydraulic cover plates.
MF 5435, 5445, 5455, 5460, 5465, 5470, 5475 Tractor with no
creeper unit A
Drive out the double pins (2) (4) from the coupling sleeves (1) (5).
Slide the sleeves towards each other on the shaft (3) linking the pinion
(26) and the gearbox output shaft. Remove the shaft and sleeve assembly.
On MF 5435, 5445, 5455, 5460, 5465, 5470, 5475 4WD tractors: If the pins
are not accessible, disconnect the front axle shaft by sliding the rear
sleeve and manually turning the front axle clutch shaft to position the
shaft (3). Remove the circlip (1). Remove the gear (2) (if fitted).
MF 5435, 5445, 5455, 5460, 5465, 5470, 5475 Tractor with creeper
unit B
Remove the creeper gear fork and the sleeve assembly (connecting shaft
and coupler).
MF 5435, 5445, 5455, 5460, 5465, 5470, 5475 Tractors with or
without creeper unit
If necessary, remove the cab screws. Raise and chock the cab. Check the
space between the bonnet and the windscreen (if the space is too narrow,
remove the body). Disconnect the cable (3). Take out the pin (1) and
remove the control rod (2).
Remove the retaining ring (33) and remove the seal (19). Release the
spring (17) using a pair of pliers. Loosen the nut (4) to release the
rod (13) from the cam (14). Remove the circlip (15). Remove the cam (14)
with the finger (16). Remove the screw (25). Remove the cover plate (24)
and the control pin (20). Keep the mechanism (31) and the brake discs
(30) towards the rear. Extract the cover plate (24), tilting it to
disengage it from the pin (18), the finger (23) and the pinion (26) and
to release the pin (20) from the housing. Remove the spring (17) and the
washer (22). Remove the snap ring (21) (if necessary) on the control pin
(20). Remove the discs (30) and the mechanism (31).
If replacing the mechanism - Unscrew the nut (4) and remove the plate
(5) and the pin (6). Take out the pin (9) and remove the pin (8) and the
clevis (7). The stud (3) is smeared with Loctite 270 and locked in the
clevis (7). If replacing the thrust plate (29) - Remove two
diametrically opposed screws (28) and screw in two guide studs (A). The
purpose of this operation is to hold the shims (27).
Unscrew the two remaining screws. Remove the thrust plate (29). Check
that the shims have all remained on the housing. The finger (16) smeared
with Loctite 270 is screwed onto the cam (14). The finger (23) smeared
with Loctite 270 is screwed onto the thrust plate. The centring pin (18)
is fitted home on the shoulder of the cover plate (24). Check and clean
the components. Replace any defective parts.
If replacing the thrust plate (29) - Reinstall the plate. Smear the two
screws (28) with Loctite 270 and then tighten them to a torque of 90-120
Nm. If replacing the mechanism - Reinstall the clevis (7) prepared with
the stud (3) and the pin (8). Reinstall the pin (9). Install the rod
(13) with its pin (6) on the stud (3) of the clevis. Reinstall the plate
(5) and screw on the nut (4). The plate (5) is rectangular. It must be
positioned horizontally so that the pin (6) Install correctly on the rod
(13).
Reinstall the discs (30), placing the mechanism (31) between them.
Insert the rod (13) on the finger (23). Check that the discs slide
freely on the shaft of the pinion (26). Install the snap ring (21) (if
removed) on the pin (20). Install the pin (20) in the cover plate (24)
with the washer (22), the spring (17) and the seal (32). Check that the
discs (30) and the mechanism (31) are correctly positioned. Install and
tighten the screws (25) to a torque of 90 - 120 Nm. Install the cam (14)
with its finger (16).
Position the circlip (15). Re-tension the spring (17), while positioning
its ends E as indicated. Lightly smear the pin (20) with AS 767
Anti-Seize grease or equivalent. Install the seal (19) on the housing
and compress it to 5.8 ± -0.15 mm using a retaining ring (33).
Reinstall the gear (2) (if fitted). Position the circlip (1). Depending
on the model: 1) with creeper unit - refit the sleeve assembly
(connecting shaft and coupler) and the creeper gear fork. Turn the
groove on the pinion sleeve towards the rear of the tractor. Replace the
pins. Adjust the forks. 2) without creeper unit - refit the sleeve
assembly (connecting shaft and coupler). Turn the groove on the pinion
sleeve towards the rear of the tractor. Replace the pins. Reinstall the
left-hand cover plate.
Position the rod (2) with the cam (14) in contact with the rod (13) to
obtain a distance of 315 mm ± 12 mm between the cable attachment axis
and the support (3). Install the pin (1).
Adjust the mechanism (31) with the adjustment nut, so that the cam
displacement from rest position "a" to maximum position "b" is 60°. The
adjustment nut (4) is accessed via the plug port (3) on the left-hand
cover plate. Reconnect the control. Adjust the hand brake control
reverse. Reinstall the right-hand hydraulic cover plate. Raise the
tractor using a jack. Install the wheels.
Remove the axle stands and the jack. Tighten the wheels to a torque of
400-450 Nm. Remove the chocks at the front of the tractor between the
frame and the front axle. Top up the rear axle housing oil level. Check
the operation of the electrical circuits, the low pressure switch, the
solenoid valves and the blockage indicator. Check the operation of the
linkage and the hand brake. Check the tightness of the mating faces,
cover plates and hydraulic unions.
Massey Ferguson 5435, 5445, 5455, 5460, 5465,
5470, 5475 - Assembling and adjusting the hand brake control
Introduce the cable (1) from below towards the cab interior and fasten
with the clip (2). Fix the clevis (7) on the brake lever (4) with the
pin (5), the washer (6) and the pin (3). Check that the cable is not
pinched. Install the sheath end (2) in the attachment support (1).
Attach the end of the cable (7) to the lever (6). Place the hand brake
lever in the released position. Make essential adjustments to obtain a
distance of 315 mm ± 12 mm between the nut (5) and the centreline of the
cable end (7). Tighten the nut (3) on the washer (4).
Check the operation of the control. Tighten the lever. Initial brake
travel should be approximately 8 notches. The indicator light on the
instrument panel should come on and the buzzer should sound if a gear is
engaged. Release the lever. The control should return freely to the rest
position. In this position, the buzzer stops and the indicator light on
the instrument panel should go out.
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
MF TRACTORS SPECIFICATIONS |
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
MF FRONT END LOADERS |
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
MF TRACTORS MAINTENANCE |
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
MF TRACTORS TROUBLESHOOTING | ||||
1652 | 1749 | 2620 | 2725 | 2805 |
3050 | 3120 | 3640 | 3709 | 4245 |
4455 | 5320 | 5455 | 5613 | 6150 |
6280 | 6480 | 6615 | 7618 | 7720 |