MASSEY FERGUSON 5400 - Page 409

Massey Ferguson 5400 - Issue 1.a
07D01.17
GPA20 shiftable shaft
Removing and refitting the shaft and
housing unit
Removing the shaft (Fig. 14)
47. Take off the cap (9).
48. Using a wrench placed on the "M" flats, unscrew
and remove the support (12).
49. Use the control to move the coupler to engage the
1000 rpm pinion.
R
EMARK: Once engaged, the coupler holds the
pinion in place.
50. Take off the two diametrically opposed screws (10)
and replace them with two locally made "G" guide
studs of suitable length, their ends resting on the
pinion (1000 rpm).
R
EMARK: The guide studs should be kept slightly
under pressure over the pinion (1000 rpm) which,
in turn, transmits pressure to the other stacked
elements.
51. Remove the other two screws. Separate and lift
the cover (8) equipped with a sealing ring (11).
52. Disengage the shaft (13) and bearings (1) (2) and
(3) (4) from the 540 and 1000 rpm driven pinions.
R
EMARK: Pair up the cones and bearing cups in
case of reuse.
53. If necessary, extract the bearing cones from the
shaft.
Removing
54. Separate the housing unit (14) from the centre
housing.
55. Discard the O'ring (18).
Refitting the unit
56. Clean and check all components. Replace any
defective parts.
N
OTE: The bearing cones and cups should be lubri-
cated with clean transmission oil before fitting.
57. Fit an O'ring (18) onto the housing unit and slide it
onto the guide studs and into the bores of the
centre housing.
58. Temporarily tighten the two diametrically opposed
screws (10) in order to secure the housing unit.