freightliner 108SD 2021 - Wheel End Inspection, Front Axle

108SD and 114SD Workshop Manual for instruc-
tions on adjusting the toe-in.
33–05 Wheel End Inspection,
Front Axle
1. Park the vehicle on a level surface, shut down
the engine, set the parking brake, and chock the
tires.
WARNING
Never work around or under a vehicle that is sup-
ported only by a jack. Always support the vehicle
with safety stands. Jacks can slip, causing the
vehicle to fall, which could result in serious injury
or death.
2. Raise the front of the vehicle and support it with
safety stands.
3. Remove the front wheel and tire assemblies. For
instructions, see Group 40 of the 108SD and
114SD Workshop Manual.
4. Remove the brake drum. For more information,
see Group 33 of the 108SD and 114SD Work-
shop Manual.
5. Check for loose, damaged, or missing fasteners
and hubcaps.
6. Check for lubricant around the hub cap and
wheel. If lubricant is present, investigate the
cause and take corrective action.
7. Check for lubricant around the hub, brake hard-
ware, and brake shoes (if installed). If lubricant is
present, check the oil seal and replace it as nec-
essary. For instructions, see Section 33.02 of
the 108SD and 114SD Workshop Manual.
8. Inspect the lubricant for discoloration. Under nor-
mal conditions, the lubricant will darken; a white
or milky appearance indicates water contamina-
tion. If the lubricant is discolored, service the
wheel end. See the 108SD and 114SD Work-
shop Manual and manufacturer literature for pro-
cedures.
IMPORTANT: Do not mix different types of lubri-
cants.
9. Inspect the lubricant for the presence of foreign
matter. Use a magnet to detect any metallic ma-
terials present in the lubricant. If the lubricant is
contaminated, service the hub. See the 108SD
and 114SD Workshop Manual and manufacturer
literature for procedures.
10. Rotate the hub and check for free, smooth, and
quiet rotation. If rotation is hampered, service the
hub immediately. See the 108SD and 114SD
Workshop Manual and manufacturer literature for
procedures.
f330014a10/05/2016
Fig. 9, Trammel Bar Positioning
f400100a10/05/2016
Fig. 10, Setting Trammel Bar Pointers
Front Axle 33
108SD and 114SD Maintenance Manual, May 2017 33/5