D
Group 177 Preventive Maintenance
W4000758
88
Check Drive Shaft, Universal Joints,
Sliding Joints and Support Bearings
To perform a check of the driveshaft, universal joints,
sliding joints and support bearings complete the following:
1 Check transmission output shaft bearing for wear.
Move the flange up and down; bearing play should not
be greater than 1.5 mm (1/16 in.).
2 Check for oil leaks past the transmission output shaft
seal.
Note: There is a difference between sweating and a leak.
If oil is seeping past the seal after cleaning, there is a leak.
3 Check driveshaft U-joints and slip joint for play. There
should exist no noticeable play in the U-joint bearings.
The slip joint radial play maximum is 0.18 mm (0.007
in.).
4 The driveshaft tube should be straight and have no
damage or missing weights. Remove any build-up of
foreign material such as undercoating, concrete, etc.
5 Check the torque of driveshaft bolts - they should be
170 Nm (125 ± 10 ft-lb).
6 Check center bearing mounting.
7 Check rear axle pinion bearing for wear and leaks past
the seal.
Note: The Volvo CT EV87 front tandem gear input shaft
has a large play for the input shaft bearing. This is normal
and does not have any damaging effect on the transfer
gear-during rotation, the shaft is balanced so that the
clearance is insignificant. If there is no oil leakage there is
no reason for concern about this play.
T1008752
89
Check Tightness of Rear Axle and Hub
Reduction Gear
To perform a check of the sealing on the rear axle and
hub reduction gear, complete the following:
1 On the rear axle, inspect around the mating surfaces
for leaks past the gasket.
2 Check brake chamber and air tubing condition.
3 Check hub reduction gear for any leaks or cracked
sealant.
91
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