operators_manual

NOTE
To ensure an accurate torque reading,
use properly maintained and calibrated
torque
wrenches. Clean the nut and
bolt. No dirt, grit, or rust should be
present.
WARNING
DO NOT operate the vehicle if the sus-
pension
U-bolts are not properly tight-
ened. Loose U-bolts will cause the
axle to not be properly secured to the
suspension, which could cause loss of
vehicle control and an accident. Loose
U-bolts can also cause uneven tire
wear and poor alignment. Failure to
comply may result in death, personal
injury, equipment or property damage.
NOTE
Whenever possible, torque all frame
fasteners
on the nut end, not the bolt
head.
Load the vehicle to its normal gross weight
before tightening U-bolts. Loading the
vehicle ensures proper adjustment of the
U-bolt and spring assembly
.
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.
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.
MAINTENANCE - Rear Axle and Suspension
Y53-6096-1C1 (09/20) 233
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