MASSEY FERGUSON 5400 - Page 402

Massey Ferguson 5400 - Issue 1.a
07D01.10
GPA20 shiftable shaft
E . Disassembling and reassembling
the pinions (540 and 1000 rpm) and
the front shaft bearing
Preliminary operations
Before removing pinions (4) (7), the following should
be removed:
- the lift cover (see chapter 6)
- the hitch support (see chapter 6).
- the top cover of power take-off at the rear of tractor,
the double driving pinion and, if applicable, the
control fork (4-speed LSPTO).
Disassembly
23. Remove the left lift ram and take off the PTO
sensor.
24. Undo the set screw (26).
25. Take out the pin (22) with the link (21) on the
left-hand side of the tractor, and discard the O'ring
(23).
N
OTE: The plug (28) stays inside the housing.
26. Take out the control fork (25) with the pads (24)
without letting them fall into the housing.
27. Remove the rear bearing and repeat operations 1
to 6.
28. Remove the hub (6) with the coupler (5), the
pinions (4) (7) and the ring (3).
29. Extract the bearing (2) and oil slave device (1).
Reassembly
30. Check and clean all components. Replace any
defective parts.
31. Lightly smear the oil slave device (1) with Loctite
648 or equivalent on the face turned towards the
centre housing. Insert the slave device with its
open end facing up (Fig. 8).
32. Insert the bearing (2) into the housing thrust up
against the oil slave device (1) (Fig. 8).
N
OTE: Turn the sealed part of the bearing towards
the pinion (4).
33. Using a jet of compressed air, check that the oil
channel in the shaft (13) is not obstructed. Lubri-
cate the rings (19) (20). Refit the pinions (4) (7), the
coupler (5) with the hub (6), the ring (3), with the
opening of the teeth turned towards the rear of the
tractor (Fig. 9).
N
OTE: If rings (19) (20) (no reference code given in
spare parts catalogue) are damaged, replace the
pinions (4) (7).
Fig. 8
Fig. 9