Remove/install clutch

AR25.10-B-0050XA

Remove/install clutch

19.02.2020

Model

368 with transmission 712.622/631

Model

384.2/3 with transmission 712

Model

685.282/284/289/290

1

Clutch disk

2

Clutch plate

3

Washer

4

Bolt

5

Clutch bearing

6

Clutch actuation system (clutch fork set)

8

Centering mandrel

9

Clamp

10

Sealing gasket

11

Clutch slave



Remove

 Caution

Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid

Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.

AS42.50-Z-0001-01A

1

Remove the slave clutch (11)

.

AR25.20-B-0300XA

2

Transmission removal

 Select the procedure according to the composition and accessibility.

3

Remove the clutch plate (2) together with the clutch disc (1)

 Unscrew the bolts (4) alternately, crosswise. Unfasten the gradually, in order to avoid excessive unilateral load on the plate. Pay attention to the clutch disc position.



Check

4

Check the conditions of the clutch plate (2) and clutch disc (1)

 The disc must move easily on the drive shaft, without presenting excessive play



In the case of fissures, signs of overheating and/or wear of the friction surface.



Replace the clutch plate and/or disc.

5

Check the conditions of the engine flywheel



In the case of fissures and/or damages in the friction surface, rectify the engine flywheel.



Check flywheel, rework if necessary
.

AR03.30-B-8022A

6

Check the engine flywheel guide bearings conditions

In the case of identifiable wear, or inadequate functioning.



Remove/install guide bearing in flywheel
.

AR03.30-B-8401A

7

Check the conditions of the clutch bearing (5) and clutch actuation system (6)

 In the case of detectable wear, or inadequate operation of the bearing and/or clutch actuation system.

8

Check the clutch actuation system fluid, for contamination

In the case of fluid contamination, wash the actuation system and replace the fluid. Check the sender cylinder conditions, if necessary repair it.



Remove/install master cylinder
.

AR25.20-B-0100XB

9

Check the conditions of the clutch actuation pneumatic system

 Vehicles equipped with hydro-servo-pneumatic cylinder. In the case of contamination with water in the pneumatic part, drain the reservoirs and check the conditions of the draining valve. In the case of contamination of the pneumatic part, by engine oil, check the air compressor conditions.



Install

10

Install the clutch disc (1) and the clutch plate (2), centering the disc with the help of a centering mandrel (8)

 Assure correct mounting position for clutch disk. Remove the centering mandrel only after the tightening of the plate fastening bolts.

 Tighten the bolts (4) alternately and progressively. During the tightening, check continuously whether the mandrel can be easily moved. If the clutch disc is installed eccentrically, difficulties will occur during the installation of the gearbox.

 .Clutch pressure plate fastening to engine flywheel

*BA25.10-B-1001-01M

 Centering drift

*677589006100

 Alignment punch

*906589006100

11

Transmission installation

12

Install the hydro-servo-pneumatic cylinder (11) that actuates the clutch fork (9)

.

AR25.20-B-0300XA

13

Supply and bleed the clutch actuation system

.

AR25.20-B-0070XA

 Clutch

Number

Designation

Engine 904.9; 924.9 with MF 362 clutch

Engine 904.9, 924.9 with MF 395 clutch

BA25.10-B-1001-01M

Clutch pressure plate fastening to engine flywheel

Nm

30

58