MASSEY FERGUSON 5400 - Page 229

Massey Ferguson 5400 - Issue 1.a
05H02.9
GBA20 mainshaft with Power Shuttle
Reassembly
19. Clean the housing and the mating faces.
20. With compressed air, check that no channels in the
gearbox or in the shaft are clogged.
21. Clean and check all components. Replace any
defective parts.
22. Lubricate cones, cups, bearings bores and the ring.
23. If disassembled:
- fit bearing cone (17) onto shaft (69) using a press
and a suitable fixture;
- refit the flat sided washer (77), with the lubri-
cating grooves turned towards the 1st gear
pinion (7);
- refit snap ring (70).
24. Assemble the cups (2) and (16) inside the housing.
25. Refit the 1st, 2nd pinion, synchromesh (11), cones
(73) (74) and ring (8) assembly in the housing.
26. Fit the shaft from the rear of the housing while
holding the pinion / synchronizer assembly
together (Fig. 6), making sure that ring (8) is
correctly fitted in pinion (14).
27. Install locking tool 3378082M1 (see § E) and
locally made holding sleeve (Fig. 3 - Fig. 4).
28. If removed, fit the cone (1) on the pinion (67), using
a press and a suitable tool.
29. Install washers (6) separated by a number of shims
(3) sufficiently thick to obtain a temporary clear-
ance of 0.10 to 0.15 mm approx in preparation for
shimming with preload (see later).
30. Install pinion (67) on shaft (69).
31. Screw in the nut (68) using the socket
3378010M1. Tighten to a torque of 130 - 170 Nm
(Fig. 5).
32. Remove the tool and sleeve (Fig. 3 - Fig. 4).
33. Shim the shaft.
34. Position the dial gauge feeler pin at the end of the
shaft (Fig. 7).
35. From the front of the housing, pull hard on the
shaft, turning alternately from left to right to
correctly seat the cones in their bearing cups.
36. Reset the dial gauge to zero.
37. Repeat the operation 35, this time by pushing.
38. Depending on the clearance measured, select the
thickness of final shims required to obtain a
preload of P1 = 0.14 to 0.20 mm. If possible, shim
towards the maximum tolerance.
39. Install the locking tool and the holding sleeve
(Fig. 3 - Fig. 4).
Fig. 6
Fig. 7