TRUCK SERVICE MANUAL
PROPELLER SHAFT
General
Medium and Heavy- Duty Models
SLIP JOINT LUBRICATION
All Models
Lubricate under low pressure every 3, 000 to 5, 000
Under low pressure force small amount of Lithium
miles. Use Lithium 12-Hydroxy stearate EP grease.
12-Hydroxy Stearate EP grease into joint every 1, 000 to
NOTE: Too much pres-sure will damage seals.
2, 000 miles. Excessive pressure and lubrication will
damage oil seal.
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
REMEDY
Propeller Shaft Vibration
1.
Excessive tire or wheel run-
1.
Replace tire or wheel
out.
2.
Tire and wheel out of balance
2.
Balance wheel.
3.
Rough engine operation
3.
Tune engine.
4.
Loose universal joint retain-
4.
Tighten bolts.
ing bolts.
5.
Worn universal joint or lack
5.
Lubricate or replace joint.
of lubricant therein.
6.
Propeller shaft out of balance
6.
Balance shaft.
7.
Parking brake drum out of
7.
Balance parking brake drum.
balance.
8.
Propeller shaft out of align-
8.
Check and align drive line.
ment.
9.
Propeller shaft out of phase
9.
Rotate slip joint until arrows
are aligned.
10.
Unequal universal joint work-
10.
Adjust driven component until
ing angles
working angles are equal.
Universal Joint Noise
1.
Loose universal joint retain-
1.
Tighten bolts.
ing bolts.
2.
Lack of lubrication in joint
2.
Lubricate joint.
3.
Worn universal joint
3.
Replace joint.
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