Spicer Hub Service Manual User Manual

Page 14

Service Instructions for HS515SP, HD519SP,

HS716SQ, HD719SQ

Hub Reduction Units

Description

The hub gears are driven by a floating sun pinion

which is splined to a drive shaft. The sun gear meets

with three planet gears mounted to the carrier which

is bolted to the hub. The ring gear is two pieces and

splined to the axle spindle, it also supports the outer

hub bearing cone. The hub is fully floating, running

on taper roller bearings secured and adjusted by a nut

with locking ring.

The unit is connected with a removable spindle bolted

to the axle casing.

Routine Maintenance

Service vehicle every 6 months, check the following:

1. General condition of nuts, bolts and axle casing.

2. Joints / oil seals for signs of leakage.

Tooling/Sealant List

Spring balance to read 25 lbs. (12 kg.)

Outer bearing cone bumper - E534

Hub guide sleeve - E535

Ring gear carrier assembly tooling - E536

Hub nut spanner - E538

Hub oil seal fitting tool - E541

Loctite No. 277 locking compound

Loctite No. 515 liquid gasket

Loctite No. 609 sealing compound

Vision O-rings and seals (flour-elastomers) -
safety hazards

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 tempera-

tures above 315

C. This acid is very toxic and

should not be come in contact with. We recom-

mend the following procedure when it is neces-

sary 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.

HS 515 SP, HD 519 SP,

HS716SQ, HD 719 SQ Models