Specifications, Service and Repair of Farm and Lawn Tractors

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MF 3050, 3080 Tractor Push-type Clutch hydraulic slave cylinder


Hydraulic slave cylinder assembly



Fig. 1A/2A. Massey Ferguson MF 3060, 3080, 3050 Tractors Push-type Clutch

Removal:

- Split the Massey Ferguson 3085, 3070 tractor between the engine and the gearbox.

- Disconnect the bleed pipe and supply pipe from the slave cylinder assembly.

- To remove the hydraulic slave cylinder assembly complete, do not separate the bearing carrier fully from the cylinder to gain access to the attaching bolts.

- Pull the release bearing carrier 40 mm away from the cylinder and remove the boot (10).

- Using short Allen keys, unscrew the two bolts (12) and bolts (12A).

Refitment:

- Coat the bolts with Loctite 241. Fit and tighten the bolts to a torque of: 8 diam: 25-35 Nm 10 diam: 40-70 Nm.

- Refit the boot (10). Refit the bleed pipe (24) and supply pipe (21).

- Refit the gearbox to the MF 3065, 3085, 3070 tractor.

- Remove air from the clutch hydraulic control system.

- To avoid damage to the release bearing carrier (9) use plastic protective jaws and grip the collar lightly.

Slave cylinder seal

Replacement:

- Split the Massey Ferguson 3060, 3070 tractor between the engine and the gearbox.

- Disconnect the bleed pipe (24) and the supply pipe (21).

- Remove the rubber boot (10).

- Withdraw the push-type clutch release bearing carrier (9) from the slave cylinder (11).

- Remove the two bolts (12) and the bolt (12A)

- Remove the slave cylinder-guide assembly.

- Separate the slave cylinder and the guide (17).

- Remove the "O" ring (13)

- Remove: the elbow union (22), the straight union (23),

- Remove the rod (18)

- Remove the MF 3060, 3085, 3065 tractor clutch release bearing.

Disassembly



Fig.9

Remove:

- on the release bearing carrier (9): the scraper ring 16, the seal 15 and the "O" ring 15A (Fig.9).

- on the slave cylinder (11): the seal 14 and the "O" ring 14A.

To remove the seals and "O" rings, use a suitably protected screwdriver (Fig.9). The bores and grooves of the parts must be free from scoring and damage.

Reassembly of "o" ring 14A and bush 14 in cylinder.

- Clean the cylinder (11).

- Position the cylinder with the groove facing upwards.

- Lubricate and it the "O" ring 14A in the groove. Do not twist it.

- Form the seal 14 into a heart-shape. Important: The lip of the seal must face outwards.

- Fit the seal 14 into the groove and push it gradually towards the "O" ring 14AV

- Lubricate the seal and the cylinder bore.

- To ensure seat seated properly, use bearing carrier as a mandrill. Lubricate the release bearing carrier (9)

- Insert the release bearing carrier (9) in the front of the Massey Ferguson 3080, 3085, 3065 tractor clutch cylinder (11) using the tool.

- Turn the release bearing carrier approximately one turn in the cylinder to bed in seal. Remove the release bearing carrier: the seal 14 is now fitted.

- Reassembly of "O" ring 15A and seal 15 on release bearing carrier (9).

- Clean the release bearing carrier.

- Position the release bearing carrier with the groove facing upwards.

- Lubricate and fit the "O" ring 15A in the groove. Do not twist it.

- Form the seal 15 into a heart-shape. Important: The lip of the seal 15 must face outwards.

- Fit the seal 15 into the groove and push it gradually towards the "O" ring 15AV Note: To ensure seal seated properly, use guide as a mandril.

- Lubricate the seal 15 and the guide (17). Insert the guide (17) into the front of the release bearing carrier (9) using the tool shown.

- Turn the guide approximately one turn. Remove the guide. The seal 15 is now fitted.

- Using a suitable arrangement to support the bearing carrier, press in the scraper ring 16.

- Fit the release bearing.

- Lubricate the seal 15Y the seal 16and the release bearing carrier bore.

- Fit the rod (18) after coating it with Loctite 241. Tighten to & torque of 25-35 Nm.

- Lubricate the guide (17), the seal (14) and the release bearing carrier (9).

- Position the "O" ring (13) on the guide.

- Assemble the cylinder (11) with the guide (17).

- Refit the bolts (12) and (12A).

- Press the release bearing carrier (9) into the cylinder (11) so as to leave a gap of 40 mm to allow access for the Allen keys to tighten bolts (12) and (12A).

- Screw on the unions (22) and (23).

- Locate the slave cylinder assembly on the Speeds-shift cover.

- Coat the bolts (12) and (12A) with Loctite 241. Using the short Allen keys, tighten to a torque oL 8 diam. : 25-35 Nm 10 diam. : 40-70 Nm

- Fit the boot (10). Refit the bleed pipe (24) and supply pipe (21).

- Refit the gearbox to the MF 3060, 3080, 3050 tractor.

- Remove air from the clutch hydraulic control system.



Fig.18

Removing air from the clutch hydraulic system.

Checking piston travel in the slave cylinder.

Clutch pedal adjustment.

Before assembly coat the pins (3) and (4) with molybdenum disulphide grease.

Coat the threads of the rod (1) (Fig, 18) with Loctite 542. Adjust the rod to obtain a pedal travel of 170 mm between the disengaged position (pedal up against the stop (2)) and the engaged position.

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