Adjustment And Maintenance - Baoli CPDS15 Operation & Service Manual

3.2 Adjustment and maintenance

3.2.1 Rear wheel bearing pre-load adjustment
a) As shown in Fig3-5, fill up the chamber formed by wheel hubs, wheel hub bearings
and wheel hub covers with lubrication grease. Coat the lips of the oil seals with lubrication
grease.
b) Press the hub bearing into the hub and fit the hub on the wheel shaft.
c) Fit a flat washer and tighten a castle nut with a torque of 206-235Nm (21-24kg·m)
and loosen it, and then tighten it again with a torque of 9.8 Nm (1kg·m).
d) To ensure firm installation of the hub, slightly knock at it with a wooden hammer and
in the meantime, rotate the hub for 3-4 turns.
e) Tighten the castle nut and align one of the notches with a cotter pin hole drilled in
the steering knuckle.
f) Again slightly knock at the hub with a wooden hammer and in this time, rotate the
hub manually for 3-4 turns to ensure its smooth rotation with a specified torque of 2.94-7.8
Nm (0.3～0.8 kg.m).
g) If the torque value necessary to rotate the hub is more than the specified one above
mentioned, screw out the castle nut for 1/6 turn and measure the torque value.
h) When the torque value measured is up to the specified one, lock the castle nut with
a cotter pin.
Fig.3-4 Steering motor
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