Toro 500 EFI Service Manual page 156

2. Zero the dial indicator; then push the ring gear
toward the dial indicator and release. End-play
should be 0.004-0.008 in.
3. To increase end-play, decrease the shim thickness.
To decrease end-play, increase the shim thickness.

NOTE: Once proper backlash and end play are
established, the gear case can be assembled.
Assembling Differential Assembly
1. With the pinion gear and new bearings installed, place
the selected (backlash) shim on the gear case side of
the ring gear with the chamfered side toward the ring
gear; then install into gear case/differential housing.
2. Place the selected (end-play) shim, chamfered side
toward the gear, onto the cover side of the ring gear.

NOTE: The spider and ring gear assembly must be
replaced as a complete unit.
154
3. Assemble the fork and sliding collar into the cover
assembly; then install the left bearing flange/bearing
assembly and seat firmly into the cover.
GC031A
4. Apply a liberal coat of grease to the O-ring; then
install it on the assembled cover assembly making
sure to seat the O-ring completely down around the
circumference of the bearing flange.
GC020
5. Making sure the O-ring is properly positioned on the
differential housing cover assembly, install the cover
with existing cap screws (coated with green Loctite
#270). Account for the ID tag. Tighten the cap
screws evenly to 23 ft-lb.

NOTE: Grease can be applied to the O-ring for ease
of assembling.

NOTE: If a new housing is being installed, tighten
GC036B
the cap screws to 28 ft-lb.
CF266A
CF267A
CF275A