Service Manual

Note: If using compressed air to dry the
bearing after cleaning, DO NOT allow
it to spin. The bearing could come
apart and cause serious injury.
Note: New bearings are only available in
matched sets. The matched set is
necessary because the bearing end-
play is not adjustable. The small "C"
shaped spacer is machined to specifi-
cally match the bearings in the set.
The advantage of a matched set is the
ability to torque the assembly to a
specified value and have a preset end-
play.
D. Check spindle housing for any dam-
age or wear.
E. Check pulley hubs for wear marks or
worn keyway. A worn or cracked hub
should be replaced.
17. If the snap ring is being replaced, install it
into the spindle housing. If the old snap
ring is being reused, discard the new snap
ring.
18. Press in lower bearing cup until it firmly
contacts the snap ring.
Note: The machined stop for the seal may
cause your driver to stop before the
bearing cup is seated completely.
NEVER use a punch to drive in a bear-
ing cup. This will damage the cup.
19. Slide the large diameter spacer in from the
top until it also contacts the snap ring.
Now press the upper bearing cup in
against the spacer. Apply a layer of grease
to both bearing surfaces.
20. Pack both bearings with grease. Smearing
grease on the outside of the bearing is not
enough lubrication. Pack the bearing by
hand or use a bearing packing tool.
21. With the spindle upside down, set the
lower bearing in the bearing cup. Now
install the lower seal. Use a seal driver to
prevent damage.
12 Spindle Repair Module
Z Master 500 Series
Nut
Square Key
Bearing
Shield
Seal
Bearing
Shield
Spindle
Shaft
Seal
Bearing Cone
Machine “C” Spacer
Bearing Cup
Inner Spacer
Heavy Washer
Pulley Hub
Seal Spacer
Spindle
Housing
Seal Spacer
Outer Spacer
Bearing Cup
Snap Ring
Bearing Cone