WHEELS, RIMS AND TIRES
GREASE CAP (Contd.)
Grease cap can be damaged by mishandling or improper tightening
of cap bolts. Replace cap if cracked. Tighten cap bolts alternately
in a crisscross pattern to 16-20 Nm (12-15 ft. lbs.).
Sight Glass Cracked or Broken
Sight glass can be damaged through abuse in handling cap or
object striking it. Replace bearing cap or window kit.
Gasket Leaking at Hub or Wheel
Tighten bolts to 16-20 Nm (12-15 ft. lbs.) alternately in a criss-
cross pattern. Use proper length bolts and lockwashers. Replace
Sight Glass Gasket Leaking
Replace sight glass kit or cap assembly.
Rubber Vent Plug Not Seated
After filling with lubricant be sure that the rubber vent plug is seated
in cap window. Early Stemco vent plug (with molded part number)
are easily misinstalled. Later type vent plugs without part number
do not have this tendency.
Threaded Filler Plug Leaking Lubricant
Apply thread sealant to threaded plug. Tighten plug.
WHEELS AND BEARINGS
Wheel Hub Bore Has Burrs, Rust
Hub must be smooth and free of excessive rough finish which could
scratch outside diameter of seal. Clean up if possible or replace
Hub Bore Diameter
Seal should be press fit. Check for correct application of seal.
Porous or Cracked Hub
Leakage which would appear at the hub (not at bearing cap or axle
flange) is an indication of a possible crack or porous opening
allowing lube leakage. To correct this condition a new hub must be
Loose Wheel Bearing Adjustment
Loose wheel bearing adjustment will permit side movement of seal
and cause abnormal wear or shaft to bore misalignment. Oil
pumping past seal will result. Set and maintain proper wheel
bearing adjustment. Adjusting wheel bearings too tight can cause
early bearing failure.
AXLE HOUSING AND SPINDLE
Spindle or Axle Housing Has Burrs
Remove all burrs and nicks. Correct rough finish. Do not use chisel
to remove wiper ring (wear sleeve).
Leakage at Axle Shaft Flange
Missing or fractured axle gasket or lack of sealing compound.
Replace gasket or apply silastic sealing compound.
Cosmolene on Spindle or Axle Housing
Thoroughly clean all cosmolene from sealing surfaces and bearing
Axle Breather Inoperative
Excessive lube pressure could cause wheel seal leakage. Clean or