Spacer


Removing and refitting the spacer

Tractors may be fitted with either a Heavy gearbox or a Powershift gearbox.
This section is limited to parts concerning the Heavy gearbox. The Heavy gearbox comprises two casings:
- the main housing which encloses the pinions, the shafts and the input unit,
- the spacer, providing the connection with the engine.

Split the tractor between the engine and gearbox.
Disassemble the four screws (dia. 10 mm) on each front Silent Block on the right- and left-hand engine bearers.

If the side fuel tank was not removed during the separation operation, drain the gas-oil and
remove the footstep in question then the fuel tank.

Raise and block the cab. Remove the cab supports (right and left) and any adjacent parts likely to obstruct removal of the spacer. Drain the gearbox.
Install protector, P/N 3378012M2 on main shaft (7) (Fig1).


Fig1

Remove screws (5) (62) in order to facilitate unsticking of closure disk (10) (Fig1). Use the tapped holes and two screws of sufficient length to extract and maintain the disk before removing it.
Scrap seal (8) (Fig6).
Remove lube tube (17) from the engine clutch located under the gearbox between spacer (16) and intermediate housing (19) (Fig4).
Remove tubes (20) (65) (70) and union (66) (Figs2 - 3).


Fig2


Fig3

Remove the clutch using locally procured tooling.

Removing the spacer (Fig4)


Fig4

The cab inner floor contains an access door. If necessary, use the latter for accessing the top screws securing the spacer to the gearbox.
Remove screws (1) (4) (5) (7) and nuts (8) on spacer (16). Remove washers (3).
Assisted by an operator, unstick and remove the spacer.
If necessary, extract studs (9) from the gearbox housing.

Refitting

Clean the parts and replace any that are defective.
Remove all traces of old Loctite from the mating surfaces. Coat the mating face of the spacer (gearbox side) with Loctite 5206 or equivalent.
Ensure presence of locating pins (6) (Fig4).

Studs (9) are smeared with Loctite 270 and locked into the gearbox.

Refit the spacer. Coat the screws and nuts with Loctite 270 and torque to following values:
- screws (1) and nuts (2): 150 - 200 Nm,
- screws (4) (5) (7) and nuts (8): 100 - 130 Nm.
Coat union (66) with Loctite 542 then screw onto the spacer (Fig2).
Refit the clutch and tubes.
Ensure the presence of centring pins on the closure disk, and shims on the clutch assembly. Replace O’rings (8) (Fig6).
Coat surrounds P of the tapped holes with Loctite 5206. (Fig5).


Fig5

Grease the lip of the seal. Fit the shaft with the protector used during disassembly. Screw two guide studs in opposing locations on the spacer, and reinstall closure disk (10) and finger (63) in the slot in pump body (12) (Fig6). Install long screws (62) in the same holes as those provided for the centring pins. Install screws (5) (Fig. 1). Torque all screws to 25 - 35 Nm.


Fig6

Refit the cab supports and any neighbouring parts that were removed. Coat the screws for the supports with Loctite 270 then insert and torque to 200-260 Nm. If it was removed, reinstall the access door in the cab floor. Service the oil in the sumps and check level on sight glass located on left of centre housing.

Remove the props and set back the cab. Torque up the screws (Ø 10 mm) on each Silent Block support to 50 - 70 Nm.
Reassemble the tractor between the engine and gearbox.
Check the following:
- leak tightness of hydraulic connections and the mating face;
- operation of the engine clutch.