User Manual

CAUTION
DO NOT mix lubricants of different
grades;
although, mixing different
brands of the same grade lubricant
(meeting MIL-L-2105C), is acceptable.
Lubricants of different grades are not
compatible and could damage the
axle.
NOTE
In all cases, lubricant supplier as-
sumes
full responsibility for the per-
formance of their product, and for
product and patent liability.
For recommended types and brands of
lubricants, contact your dealer
.
Dana Spicer and Fabco
No initial drain is required on Dana Spicer
axles that are factory filled with an Dana
Spicer-approved synthetic lubricant.
• Petroleum-based lubricants must
be drained within the first 5,000
miles (8,000 km) if converting to an
approved synthetic lubricant.
Initial Change: See Preventive
Maintenance Intervals on page 173
for
standard rear axle service intervals.
Change mineral-based lubricant in other
Dana Spicer and Fabco axle assemblies
(new or rebuilt) within the first 3,000 to
5,000 miles (4,800 to 8,000 km).
• For petroleum-based axles, use
lubricants meeting MIL L2105C/D
grade specifications or approved
synthetic lubrication. Do not use oil
additives.
All Vehicles with Dana Spicer and Fabco
Axles: See Preventive Maintenance
Intervals on page 173. Contact your dealer
for approved synthetic lubricant brands.
• Dana Spicer Axles with synthetic
lubrication and Out Runner Seals:
drain, flush, and refill at 500,000
miles (804,000 km).
Axle Housing Breather Vent:
• Check and clean the axle housing
breather vent at each oil level
check.
Meritor:
• See Meritor Lubrication
Maintenance Manual (MM1).
Drive Axle - Dana
Drain the lubricant while warm. Flush each
unit with clean flushing oil. Change the
lubricant.
Drive Axle - Meritor
Drain and replace the lubricant.
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
MAINTENANCE - Rear Axle Alignment
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