Spicer Tandem Drive Axles Service Manual J340-S, J380-S, J400-S, W460-S - 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 procedures for the
Spicer J340-S, J380-S, J400-S, W440-S and W460-S rear
drive tandem 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.
SAFETY 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 hazardous conse-
quences 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 assembly.
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.
4
BRAKE LININGS CONTAIN NON-ASBESTOS FIBERS