Spicer Hub Service Manual - Manual (Page 6)

4
Service Instructions For HS415SM Model
Description
The hub gears are driven by a floating sun pinion
which is splined to a drive shaft. The gear meets with
three planet gears mounted in a carrier which is
bolted to the hub. The ring gear is two pieces splined
to the axle spindle, it also serves to support the outer
hub bearing cone. The hub is fully floating, running
on a taper roller bearing which is secured and ad-
justed by a nut locking ring.
The unit is mounted on a removable spindle, bolted to
the axle housing.
Routine Maintenance
Service the vehicle every six months, checking the
following:
1. General condition of nuts, bolts and housing
2. Joints and seals for signs of leakage.
Tooling/Sealant List
Spring balance to read to 25 lbs. (12kg).
Hub nut spanner - E537.
Assembly tooling - E539.
Hub oil seal fitting tool - E540.
Loctite No. 277 locking compound.
Loctite No. 515 liquid gasket.
Loctite No. 609 sealing compound.
Caution: Viton O-rings and seals (flouro-elas-
tomers) - safety hazards.
Viton material used in oil seals and O-rings
produces a highly corrosive acid (hydroflouric)
when subjected to temperatures above 315 ° C.
This acid is very toxic and should not be come in
contact with. We recommend the following
procedure when it is necessary to inspect any
equipment that has been subjected to high
temperature or fire.
a. Visually inspect any gaskets or seals that have
suffered from heat; they will appear black and
sticky.
b. If this condition exists, do not handle.
c. Confirm material composition. Any flouro-
elestomer (Viton, Flourel or Tecomoflon) should
be considered dangerous but natural rubber and
nitrile are nonhazardous.
d. If flouroelastomer seals have been used, the
affected area must be decontaminated before
continuing.
e. Disposable heavy duty gloves must be worn and
the affected area decontaminated by washing
thoroughly with limewater (calcium hydroxide
solution).
f. Discard any clothing contaminated after use.
Note: Burning of discarded items is NOT RECOM-
MENDED, except in an approved incineration process
where gaseous products are treated by alkaline
scrubbing.
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HS 415 SM Model