operators_manual

Drive Axle - SISU Breather and
Brakes
1.
Check the breather for proper
operation.
2. Overhaul the brakes: degrease all
moving parts, check the bushings
and seals for wear.
Drive Axle (SISU) Inspection
1. Check the wheel bearing hubs and
adjust if necessary.
2. Visually inspect for damage or
leaks.
Drive Axle (SISU) Oil Servicing
Change the oil in the differential carrier and
the hubs, and clean the magnetic oil drain
plugs.
Drive Axle - SISU Lube Filter
Clean the suction filter for the optional
pressure lubrication system.
Rear Axle Alignment
Continual road shock and load stresses
may force the rear axles out of alignment.
If you detect rapid tire wear on the rear
axles, you may have misaligned axles. If
you suspect rapid tire wear, have your rear
axle alignment checked and adjusted by an
authorized dealer
.
Suspension alignment should be checked
when any one of the following conditions
exist:
• Total vehicle alignment required
after a body has been installed on
truck chassis.
• Discovery of loose suspension
fasteners (Loose, defined as any
torque below the recommended
torque value)
• Discovery of elongated holes in a
suspension component
• Bushing replacement
• Excessive or abnormal tire wear
• Immediately after post body
installation (See First Day in the
Maintenance Chapter)
Steering System
WARNING
DO NOT operate the vehicle if the
steering system is not working proper-
ly. You could lose control of your vehi-
cle if the steering system is not in good
working
condition, which could result
in a serious accident. For driving safe-
ty, visually check the steering gear and
components. Frequent checks are im-
portant for driving safety, especially af-
ter traveling over rough roads. Failure
to comply may result in personal injury,
property damage, or death.
WARNING
If this chassis is equipped with an
electronic
stability system (ESC) and
any part of the steering system (e.g.,
linkage, steering driveline, column,
front end alignment, etc) is repaired,
removed, or disassembled in any way,
or if the steering angle sensor is re-
placed, the steering angle sensor must
be recalibrated. Any repairs or adjust-
ments to any part of the steering sys-
tem must be performed by an author-
ized dealer. Failure to comply may re-
sult in personal injury, property dam-
age, or death.
Hydraulic fluid (under low pressure)
provides the power to operate the steering
MAINTENANCE - Steering System
236 Y53-6096-1C1 (09/20)
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