SAF P89, Service Manual, Page: 16 / 28

16 XL-SA20018UM-en-US Rev H · 2017-12-14 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND, SAF, and logos are trademarks of
SAF-HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.
Figure 24
HUB SEAL INSTALLATION TOOL
Figure 25
INNER BEARING CUP
OUTER
BEARING CUP
INNER BEARING
DISC HEAD UNIT
DISC SPIDER
Disc Brake Servicing
3. Thoroughly clean the spindle and spindle threads of rust,
dirt, grease or any other contaminants that could damage
the hub seal and cause it to leak.
NEVER install a spindle mounted wheel
seal in the hub and then force it onto the
axle spindle by tightening the axle nut.
Damage to seal will result.
To avoid damaging the seal, support the hub
against the spindle inner shoulder until the
outer bearing and adjusting nut are installed.
4. Apply a thin layer of sealant to the O.D. of the spindle
shoulder. Place the wheel seal on the spindle with the
side labeled “oil-bearing side” facing out towards the
end of the spindle
(Figure 23) .
5. Seat wheel seal into place using a hub seal installation tool and
hammer. Rotate the wheel seal installation tool 1/4-turn with
every hammer tap until the seal is properly seated with the
metal face of the seal flush with the inner shoulder of the axle
spindle
(Figure 24) . Clean and remove any excess sealant.
6. Prepare the hub. Remove the old lube and thoroughly clean
the hub cavity and hub bore. If needed, use emery cloth
to remove any burrs or old bore sealant. Inspect the hub
bore for damage. Replace if necessary.
7. Install new inner and outer bearing cups into the hub as
necessary (Figure 25) .
8. Install inner bearing on spindle (Figure 25) .
NOTE: If using oil for lubrication, coat bearings with oil
before installation. Refer to Section 12 for proper
wheel end oil lubrication instructions
(Figure 27) .
Failure to lubricate bearing correctly and
maintain proper lubrication could result in
bearing damage.
NOTE:
If using grease and NOT oil for hub lubrication, the
inner and outer bearing, and the hub cavity MUST be
pre-packed with grease before installation. Lubricate
wheel end components with grease specified in Section 17.
9. Lubricate inside of hub cavity and install on spindle (Figure 25) .
NOTE: Be sure wheel seals are properly installed before
performing the hub bearing adjustment procedure.
Figure 26
INNER BEARING
HUB BEARING CUP
DISC HEAD UNIT