MASSEY FERGUSON 5400 - Disassembling the Differential Assembly and the Ring Gear

Massey Ferguson 5400 - Issue 1.a
06E01.12
GPA20 differential
F . Disassembling the differential
assembly and the ring gear
Disassembling the differential assembly
39. Place the differential assembly on a workbench.
40. Extract the cones (17) (28) and cup (27), recover
shims (38).
41. Mark the two half-housings (29) with joining paint
lines. Take out the screws (15).
42. Remove the fixed coupler (16).
43. Separate the two half-housings (29).
N
OTE: These components both display the same
number. They must always be fitted as pairs.
44. Remove washers (18), sun gears (19), pinion gears
(20), washers (21) and spider (22) (Fig. 13).
N
OTE: Replacement of the ring gear automatically
requires replacement of the drive pinion. These
components both bear the same number. They
must always be fitted as pairs. In the factory, the
ring gear and unit are assembled using rivets.
During repairs, these rivets are replaced by nuts
and screws.
Disassembling the ring gear (23)
45. Remove the ring gear from the unit.
46. Centre punch each rivet (24) (on toothed side of
ring gear).
47. Using a 5 mm drill, drill out the rivets to a depth of
10 mm (Fig. 14).
48. Carry out a second drilling operation with a 12 mm
drill to the same depth.
49. Drive out the rivets using a suitable drift punch
(Fig. 15).
Fig. 13
Fig. 14
Fig. 15