Chevrolet Silverado 4500HD 2022 Manual page 353

352 Service and Maintenance
Chassis Lubrication
New vehicles are lubricated at the factory.
After the vehicle is placed in operation,
regular lubrication and maintenance
intervals, based on the type of service and
road conditions, should be established. The
loads carried, speed, road and weather
conditions all contribute to the frequency of
lubrication intervals. Thorough lubrication
and maintenance at the specified intervals
will ensure outstanding lifecycle value and
will reduce overall operating expense.
In some types of operation, and where
operating conditions are extremely severe
(such as in deep water, mud, or unusually
dusty conditions), the vehicle may require
lubrication after every 24 hours of operation.
Only lubricants of superior quality should be
used. The use of inferior products will
reduce the service life of the vehicle or
result in failure of its components. See
Recommended Fluids and Lubricants 0 363.
The lubrication intervals specified should be
performed at whatever interval occurs first,
whether it is kilometers (miles), hours,
or months.
See Maintenance Schedule 0 330.
Front Axle
Inspection and Lubrication (4x2 Models)
Check to make sure that the front axle
mounting U-bolts, attaching or mounting
bolts, and nuts are securely tightened. Loose
or misaligned front axles will affect vehicle
alignment, front tire wear, and handling.
Re-torque the U-bolt nuts after the first
1 600 km (1,000 mi) and every 58 000 km
(36,000 mi) thereafter.
Observe the following when checking the
front axle for damaged, binding, or worn
parts, and adequate lubrication:
Kingpin wear inspection requires that no
weight is on the tires.
Kingpin and kingpin bushing lubrication
requires that the vehicle weight is off the
tires and the front wheels are turned fully
to the left or right prior to installing
grease distribution.
Kingpin thrust bushing lubrication
requires that the vehicle weight is resting
on the tires.
Power grease guns may be used;
however, a hand-pumped grease gun is
recommended for optimal grease
distribution within each component joint.
Inspect, lubricate, and adjust the wheel
bearings at regular intervals. See
Additional Maintenance and Care
(Lubrication) 0 346 or
Additional Maintenance and Care
(Maintenance Instructions) 0 350 and
Maintenance Schedule 0 330.
Inspection and Lubrication (4x4 Models)
Proper lubrication and inspections of the
front drive components must be followed.
Both the front drive axle and the transfer
case oil level must be checked periodically,
and also inspected for possible oil loss. The
proper lubrication level is to the bottom of
the oil fill hole with the vehicle on level
ground.
Observe the front axle for damaged, binding,
or worn parts, and adequate lubrication.
Make sure the axle mounting U-bolt nuts,
attaching or mounting bolts and nuts, are
securely tightened. Loose or misaligned rear
axles will affect vehicle alignment, front tire
wear, and handling.
Re-torque the U-bolt nuts as needed. See
Capacities and Specifications 0 371.