Spicer Drive Axles Service Manual - Manual (Page 6)

CAUTION
BREATHING BRAKE DUST MAY BE HAZARDOUS TO YOUR HEALTH AND
MAY CAUSE SERIOUS RESPIRATORY OR OTHER BODILY HARM.
FOLLOW 0.S.H.A. STANDARDS FOR PROPER PROTECTIVE DEVICES TO BE USED
WHEN WORKING WITH BRAKE MATERIALS.
BRAKE LININGS CONTAIN NON-ASBESTOS FIBERS
AVOID CREATING DUST
DO NOT REMOVE BRAKE DRUM WITHOUT PROPER PROTECTIVE EQUIPMENT.
DO NOT WORK ON LININGS WITHOUT PROPER PROTECTIVE EQUIPMENT.
DO NOT REPLACE LININGS WITHOUT PROPER PROTECTIVE EQUIPMENT.
DO NOT ATTEMPT TO SAND, GRIND, CHISEL, FILE, HAMMER OR ALTER BRAKE
LININGS IN ANY MANNER WITHOUT PROPER PROTECTIVE EQUIPMENT.
READ THIS SECTION BEFORE STARTING
ANY SERVICE PROCEDURES
IMPORTANT
GENERAL PRECAUTIONS
This manual covers maintenance and rebuild proce-
dures for the Spicer F155-S and F170-S rear drive axle
assemblies.
GENERAL AXLE DESCRIPTION
The Spicer Heavy Duty Single Reduction rear drive axle
is a full floating axle assembly, with a hypoid gear carrier
assembly, using a High Strength Low Alloy (HSLA) steel
axle housing. The hypoid pinion is straddle mounted
with two tapered roller bearings behind the pinion teeth
for thrust and radial loads. A pilot bearing is located on
the nose of the pinion for radial load. The differential
itself uses four precision forged pinion mate gears, a
forged cross, and precision forged side gears.
Safety glasses should be worn
at all times when assembling
or disassembling axles.
SAFTEY PRECAUTIONS
Proper service and repair of vehicle components is
important to the safe and reliable operation of all motor
vehicles. This applies particularly to driving axles such as
the ones described in this manual. The procedures
recommended and described in this manual are tested,
effective methods for performing service operations.
Follow each procedure closely, making use of both the
text and illustrations. Some of these service procedures
show the use of certain tools designed specifically for
the operation being performed. They are shown as a
preferred means of performing the operation. It is not
practical to anticipate and advise the service trade of all
possible alternative methods, and of all possible hazard-
ous consequences that could occur.
END YOKES AND FLANGES
CAUTION: Hammering on end yokes can close
in the bearing bores or misalign yoke lugs and result
in early failures of journal needle bearings or other
driveline components. Serious damage can also be
done internally to the ring and pinion set or pinion
bearings by hammering on external parts. End yokes
or companion flanges should be removed or installed
using the recommended methods outlined in this
manual.
CLEANLINESS
Axle components should be steam cleaned prior to
removal from the vehicle. Dirt is abrasive and will cause
premature wear of otherwise serviceable parts.
Service personnel should use a wash tank for thorough
cleaning of parts just prior to reassembly.
Accordingly, anyone who uses a service procedure or
tool different than shown must insure that their safety,
and the vehicle's safety, will not be jeopardized by the
service method selected.
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