Massey Ferguson 5400 - Issue 1.a
06E01.17
GPA20 differential
79. Depending on the clearance measured, select a
definitive thickness of shims in order to obtain the
following preload:
P1 = 0.03 to 0.09 mm
N
OTE: If possible, shim to the maximum tolerance.
80. Take out the two diametrically opposed screws
(32) and replace them with two guide studs.
Remove the two other screws and thrust plate
(35).
81. Fit the shims selected in operation 79 and replace
the thrust plate.
82. Fit the screws (32) lightly smeared with Loctite
270 or its equivalent and tighten to a torque of 90 -
120 Nm, having first removed the guide studs.
2
nd
method: torque adjusting
83. Remove or add shims (36) to obtain a drive pinion
rotational torque of 0.80 to 2 Nm, measured using
a dial torque wrench, with the drive pinion turning
at approximately 1 to 5 rpm.
N
OTE: Where possible, shim to obtain the
maximum torque value.
Once the correct torque has been obtained, refit
the screws (32) lightly smeared with Loctite 270 or
equivalent, then tighten to a torque of 90 - 120 Nm.
84. Position the cap (41) (Fig. 21) in the housing, then
refit the union (52) and lubricating pipe locking nut.
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