MASSEY FERGUSON 6475 - B. Disassembling and reassembling with the cab fixed to the centre housing

Massey Ferguson 6400 - Issue 1
02C01.3
Splitting - GBA20 gearbox / Centre housing
B . Disassembling and reassembling
with the cab fixed to the centre
housing
Disassembling
Preliminary operations
1. Engage the handbrake.
2. Check that the suspended front axle (if fitted) is in
low position and unscrew the control unit bleed
screw (see chapter 9).
3. Remove the lateral panels from each side of the
engine and bonnet (if necessary).
4. Place the rear wheels in the wide track position.
5. Remove the footsteps.
Servicing under the tractor
6. Remove the guards and the 4WD shafts.
7. Drain the oil from the gearbox and centre housing.
8. Remove the reverse shuttle lubricating pipe (1)
located between the centre housing and gearbox
(Fig. 1).
Servicing on the right-hand side of the
tractor
9. Disconnect and remove the batteries.
10. Remove the battery support.
11. Mark then disconnect:
- the hose on the steering ram
- the main pipe (17 bar) at the selection cover
- the front differential lock hose on the right-hand
hydraulic cover
- the return hoses on the selector cover
- the power brake on the accumulator 17 bar
supply line (depending on equipment)
- the lubricating hoses (running to and from the
cooler)
- the gear cables on the selector cover
- creeper gear cables (optional)
Special point (Fig. 2)
On tractors fitted with creeper gears:
- Remove screw (1)
- Pull the pin (2) outwards in order to free the “D”
finger of the fork.
Fig. 1
Fig. 2
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