33–00 Safety Precautions
Safety Precautions in this section apply to all
procedures within this group.
DANGER
When working on the vehicle, shut down the en-
gine, set the parking brake, and chock the tires.
Before working under the vehicle, always place
jack stands under the frame rails to ensure the
vehicle cannot drop. Failure to follow these steps
could result in serious personal injury or death.
33–01 Kingpin Lubricating
Detroit
™
Axles
NOTICE
Use regulated pressure when lubricating the
knuckle assemblies, otherwise damage could re-
sult to the knuckle caps.
1.
Park the vehicle on a level surface, shut down
the engine, and set the parking brake. Chock the
tires. When lubricating upper and lower knuckle
assemblies, do not raise the front axle.
2.
Wipe the fittings clean.
3.
Apply multipurpose chassis grease, NLGI Grade
1 (6% 12-hydroxy lithium stearate grease) or
NLGI Grade 2 (8% 12-hydroxy lithium stearate
grease), until new grease is seen at the junctions
of the axle beam and knuckles. For locations of
grease fittings, see
; for grease exit points,
see
Sealed and Easy Steer
™
Kingpins—Axles With Unitized
Wheel Ends
NOTE: This procedure applies to 921, 931, 932,
933, 934, 941, 942, 943, 951, 961, 963, 966,
967, 971, and 975 Series Easy Steer sealed
front axles. Refer to the identification tag on the
front of the axle beam.
On sealed and Easy Steer Plus
™
front axles, the
grease fittings are on the top and bottom kingpin
caps of the knuckle.
1.
Shut off the engine, apply the brakes, and chock
the rear tires.
06/07/2012
f330272
A
B
1
1
A
Upper View, LH Side
B
Lower View, LH Side
1.
Grease Fitting
Fig. 1, Grease Fittings, Detroit Axles
09/13/2012
f330275
Fig. 2, Kingpin Grease Exit Points, Detroit Axles
Front Axle
33
Business Class M2 Maintenance Manual, October 2017
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