MASSEY FERGUSON 5400 - Preloading the Axle Shaft Bearings

Massey Ferguson 5400 - Issue 1.a
06B01.10
GPA20 Normal Duty Trumpet housings
70. Fit the three-lipped seal (3) home against the
shoulder of the shaft.
N
OTE: Follow the assembly order of the seal
(Fig. 13).
71. Lubricate the shaft (2) and fit the cone (5A) home
against the shoulder.
72. Moderately grease the cone (5A) and seal lips (3)
(7) (BP Agricharge grease or equivalent).
73. Protect the shaft splines (2) and insert it into the
trumpet housing.
N
OTE: The seal lips (3) must be turned outwards.
74. Take off the shaft protection and lightly lubricate
the cone (8A).
75. Refit the cone (8A), washer (9) and planet carrier
(10).
76. Fit shims to obtain the required preload (see § E).
77. Replace plug (27) with a grease nipple. Partially fill
the trumpet cavity between the cone (5A) and the
seal (3) with BP Agricharge grease or equivalent.
Take off the grease nipple and tighten the plug
again (Fig. 13).
E . Preloading the axle shaft bear-
ings
78. Place trumpet assembly in vertical position.
79. Remove the screw (23) and washer (24).
80. Seat the cones (5A) (8A) in their cups by turning the
trumpet on its pin.
81. Set a thickness of shims (25) greater than dimen-
sion X in order to obtain clearance (Fig. 14).
82. Fit the washer (24) and screw (23) and tighten to a
torque of 270 - 440 Nm.
83. Using a dial gauge, check the clearance by moving
the planet carrier axially (Fig. 15).
84. Remove the screw (23) and washer (24).
Depending on the dial gauge reading, take off the
surplus shim thickness (25) in order to obtain a
preload of:
P1 = 0.025 to 0.125 mm
85. Clean the tapping at the end of the shaft (2).
86. Refit the washer (24).
87. Clean the screw (23) and smear it with Loctite 241.
Tighten to a torque of 270 - 440 Nm.
Fig. 14
Fig. 15