Western Star 47X 2020, Maintenance Manual

Page: 82 / 166

33–03 Tie Rod Lubrication
Detroit and Meritor Axles
For any Detroit or Meritor axle that requires lubrica-
tion of the tie-rod ends, wipe the grease fittings
clean, then pump multipurpose chassis grease, NLGI
Grade 1 (6% 12-hydroxy lithium stearate grease) or
NLGI Grade 2 (8% 12-hydroxy lithium stearate
grease), into the tie-rod ends until all used grease is
forced out and fresh grease is seen at the ball stud
neck. See
Fig. 4 .
33–04 All-Axle Alignment
Check
The front axle requires periodic servicing to maintain
accurate wheel alignment. Correct front axle wheel
alignment is needed to ensure long tire life, ease of
handling, and steering stability. When aligning the
front axle, it is essential that the rear axle(s) be
checked for correct alignment at the same time.
Alignment of the rear axle(s) has a direct impact on
how the vehicle tracks. All axles, front and rear,
should be aligned whenever alignment is done.
Three factors are involved in wheel alignment: cam-
ber angle, caster angle, and wheel toe-in.
Camber angle ( Fig. 5 ) is the vertical tilt of the wheel
as viewed from the front of the vehicle. Camber
angle is measured in degrees, and is not adjustable.
09/06/96 f320032a
A
1
1
A. Grease Exit
1.
Grease Fitting
Fig. 2, Knuckle Pin Lubrication
f320033a
1
OK
OK
02/27/2007
NOTE: Shown without pinch bolt to provide clarity.
1. Cross-Tube Split
Fig. 3, Tie-Rod End Adjustment
06/12/2012 f330273
1
2
NOTE: No grease should emit from the tie-rod boot. If
grease emits from the tie-rod boot, the boot is dam-
aged.
1. Grease Fitting 2. Boot
Fig. 4, Grease Fitting and Boot (Detroit axle shown)
Front Axle
33
47X and 49X Maintenance Manual, August 2020
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