Service Manual

the cage, replace the bearing set.
Note: With this spindle design, both bearings
and bearing cups must be replaced as
a set.
14. If replacing the bearings, use a punch and
hammer to drive both of the bearing cups
out of the spindle housing. Also remove
the large diameter spacer at this time if
spacers are to be replaced.
Caution: Do not use old bearing cups with
new bearings. This may cause pre-
mature bearing wear and result in
failure.
15. A large snap ring is still inside the spindle
housing. It locates the matched bearing
set in the spindle housing. Unless this is
damaged or worn, there is no need to
remove and replace this snap ring. A
replacement snap ring comes with the
replacement bearing set. If the snap ring is
damaged, look for damage to the housing.
Replace as needed.
Assembly
16. Thoroughly clean and inspect the spindle
assembly parts prior to assembly. Always
wear safety glasses.
A. Check spindle shaft for bearing sur-
face damage or signs of impact. Also
check for damage to the threaded
areas for both the blade bolt and the
spindle retention nut.
B. Check lower bearing spacer for wear.
If the spacer is damaged, the seal
may not be able to keep dirt out
properly.
C. Check bearings for wear. If reusing
bearings, you must examine them
carefully for wear. Also, make sure to
put the same bearing cone and bear-
ing cup together as they were when
disassembled. Look for pitting on the
rollers of the bearings and replace the
bearing set if any pitting is present.
11Spindle 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