freightliner COLUMBIA CL112 Maintenance Manual page 78

Front Axle
If the hub rotates smoothly and without noise, go
to the next step.
18. Bend an opposing tab of the tabbed washer over
a flat of the outer locknut.
19. Install the wheel and tire assembly. Hand-tighten
the wheel nuts.
20. Raise the vehicle, remove the jackstands, then
lower the vehicle.
21. Tighten the wheel nuts 500 lbf·ft (678 N·m).
22. Install the hub cap.
If installing a metal hub cap, go to the next step.
If installing a plastic hub cap, do the following:
22.1 Apply a continuous 1/8-inch (3-mm) bead
of RTV silicone sealant to the outside first
thread of the hub cap. Apply the sealant
around the entire circumference.
IMPORTANT: Use only the following RTV
sealants on the hub cap:
• Meritor part number 2297-Z-7098
• Three Bond
®
• Loctite
®
Ultra Grey Adhesive Sealant 18581
22.2 Install the hub cap by hand until it is
seated.
NOTE: Disregard the torque value em-
bossed on the hub cap.
22.3 Using a torque wrench, tighten the hub
cap 75 lbf·ft (102 N·m).
If you cannot tighten the hub cap to the
correct torque value, or if it makes a pop-
ping sound while being tightened, replace
it with a new one.
23. If installing a metal hub cap, do the following:
23.1 Using a wire brush, clean the unitized
wheel-end inner threads and the hub cap
external threads.
23.2 Apply Loctite 17430 gasket sealant to the
external hub cap threads.
23.3 Install the hub cap by hand until it is
seated.
23.4 Using a torque wrench, tighten the hub
cap 350 lbf·ft (475 N·m).
Columbia Maintenance Manual, October 2004
NOTE: If you cannot tighten the hub cap to
the correct torque value, or if it makes a
popping sound while being tightened, re-
place it with a new one.
24. Remove the chocks from the tires.
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