Spicer Tandem Drive Axle Dual Range & Double Planetary 34,000-45,000 lbs - Manual (Page 15)

Repair and Replacement
IMPORTANT:
To achieve maximum value from an axle rebuild, replace
lower-cost parts, such as thrust washers, seals, etc. These items protect
the axle from premature wear or loss of lubricants. Replacing these
parts will not increase rebuild cost significantly.
It is also important to replace other parts which display signs of heavy
wear even though not cracked or broken. A significant portion of such a
part’s useful life has been expended and the damage caused, should the
part fail, is far in excess of its cost.
Steel Parts —
Gear sets, differential parts and bearings are not repair-
able. Worn or damaged parts should be discarded without hesitation.
Also discard mating parts in some cases. Gear sets for example,
must be replaced in sets.
Miscellaneous Parts —
Seals and washers are routinely replaced. None
of these parts can be reused if damaged. Fasteners using self-locking
nylon “patches” may be reused if not damaged, but should be secured
by a few drops of Loctite #277 on the threaded surface of the hole during
installation and carefully torqued during installation.
Axle Housings —
Repairs are limited to removal of nicks or burrs on
machined surfaces and the replacement of loose or broken studs.
CAUTION:
ANY DAMAGE WHICH AFFECTS THE ALIGNMENT OR
STRUCTURAL INTEGRITY OF THE HOUSING REQUIRES HOUSING
REPLACEMENT. REPAIR BY WELDING OR STRAIGHTENING
SHOULD NOT BE ATTEMPTED. THIS PROCESS CAN AFFECT THE
HOUSING HEAT TREATMENT AND CAUSE IT TO FAIL COMPLETELY
WHEN UNDER LOAD.
Silicone Rubber Gasket Compound —
For more effective sealing, Spicer
uses silicone rubber gasket compound to seal the majority of metal-to-
metal mating surfaces.
Spicer includes gasket compound and application instructions in many
repair parts kits.
It is recommended that this compound be used in place of conventional
gaskets. The compound will provide a more effective seal against lube
seepage and is easier to remove from mating surfaces when replacing
parts.
Seals, Yoke & Slinger Service Information
During the 4th Quarter of 1990, Spicer began using new seals and yoke & slingers on the models in this
publication. The new seals and slingers are noticeably different from the current seals and will affect
interchangeability.
●
The upgraded Seals
can
be used on axles originally equipped with the old seals.
●
Spicer recommends the replacement of old yoke & slinger assemblies when the new seals are installed. The
old yokes and slingers will work with the new seals, but new yoke and slinger assemblies provide maximum
sealing protection and prevent premature seal wear due to poor yoke condition.
●
New yoke and slinger assemblies
cannot
be used with the old seal design on the tandem forward axles.
●
New yoke and slinger assemblies
can
be used with the old seal on the tandem rear pinions.
●
Yoke Assembly & Oil Seal Kits contain oil seal, yoke & slinger and instructions.
●
Most non-Spicer aftermarket seals
will not
be compatible with the new Spicer Yoke and Slinger assemblies.
●
Sicer recommends the use of special installation tools conveniently packaged in a single kit (listed below).
• Refer to Spicer parts Book AXIP-0087 and Spicer Bulletin 90-06 for additional information.
Seal Driver Installation Kit 212139
Includes:
• 126917 Driver (Rear Axle Pinion)
• 127787 Adapter (use with 126917 Driver for Forward Axle Input)
• 127786 Driver (Forward Axle Output)
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