operators_manual

WARNING
DO NOT replace U-bolts and nuts with
common
U-bolts or standard nuts.
These parts are critical to vehicle safe-
ty. If the wrong U-bolts or nuts are
used, the axle could loosen or sepa-
rate from the vehicle and cause a seri-
ous accident. Use only U-bolts and
nuts of SAE Grade 8 specification or
better. Failure to comply may result in
death, personal injury, equipment or
property damage.
Rear Axle Lubrication
See the axle manufacturer's operator's
manual for lubrication specifications and
service intervals.
Check oil level with the vehicle parked on
level ground and the fluid warm. The level
should be even with the bottom of the filler
hole.
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)
Drive Axle - Dana
Drain the lubricant while warm. Flush each
unit with clean flushing oil. Change the
lubricant.
Eaton/Dana Axle Lubrication
•
The original mineral-based
lubricant must be drained within
3,000-5,000 miles (4,800-8,000
km) on all Eaton axles. This initial
change is very important because it
flushes out break-in contaminants
that might otherwise cause
premature wear.
• No initial drain is required on Eaton
axles that are factory filled with an
Eaton-approved synthetic lubricant.
• Mineral-based lubes must be
drained within the first 5,000 miles
(8,000 km) if converting to an
Eaton-approved synthetic lube.
• Change the lubricant within the first
5,000 miles (8,000 km) of operation
after a carrier head replacement,
regardless of the lubricant type.
• Refer to the Eaton Field
Maintenance Manual for a
particular axle for lubricant
specifications.
• See your dealer for Eaton-
approved lubricant brands.
• Refer to the chart below for
lubricant change interval.
MAINTENANCE - Rear Axle and Suspension
286 Y53-6110-1A1 (01/21)
5