Toro Groundsmaster 4500-D Series Service Manual page 371

Disassembly (continued)
Assembly
Groundsmaster ® 4500-D/4700-D
19245SL Rev A
7. Remove primary carrier and secondary carrier from ring gear.
8. Bend the locking washer tab away from the lock nut. Use a TMFS12 spanner
socket to remove the 55 x 1.5 mm lock nut. Remove the locking washer and
spacer. Discard the locking washer.
9. Carefully remove housing and bearing cones from spindle.
10. Remove and discard seals from housing.
11. If necessary, remove bearing cups from housing.
12. If wheel stud removal is necessary, use a press to remove the stud(s) from
the housing.
13. If necessary, remove the ring gear from the housing:
Note: High strength thread locking compound was used during assembly. It
may be necessary to heat the ring gear near the mounting screws to release
the screws.
A. Remove socket head screws (item 7) and lock washers that secure the
ring gear to the housing.
B. Remove the ring gear and retrieve the four (4) dowel pins (item 10) from
housing.
C. Remove the O−ring from the housing bore and discard.
Note: Use new seals, O−rings and locking washer when assembling the
planetary drive.
1. Thoroughly clean parts in solvent and dry completely after cleaning. Inspect
parts for damage or excessive wear and replace as necessary.
2. If any wheel studs were removed, use a press to install new studs into
housing. Make sure that stud shoulder is fully pressed against housing
surface.
3. If ring gear was removed from housing:
A. Fit four (4) dowel pins in housing.
B. Apply a light coat of grease to a new O−ring and install it in the housing
bore.
C. Apply high strength thread locking compound and secure ring gear to
housing with lock washers and socket head screws. Tighten screws to 37
N·m (27 ft−lb).
4. If previously removed, press bearing cups into housing. Cups should be
pressed fully to shoulder of the housing bore.
5. Fit inner bearing cone onto spindle. Make sure inner bearing cone seats
fully against spindle shoulder. If inner bearing is not seated fully, lightly tap
bearing cone on inner hub until it seats properly.
6. Make sure that seal bore in housing is thoroughly cleaned. If OD of seal
is not rubber or does not have a sealant coating, apply a light coating of
silicone sealant to seal bore in housing. Install seal into housing so it is flush
with housing face.
7. Install boot seal. Cover surface of lip seal and boot seal with grease.
8. Lightly oil bearing cups then place housing assembly over spindle and inner
bearing cone. Take care to not damage seals or spindle during installation.
9. Fit outer bearing cone onto spindle.
Page 7–13 Axles, Planetaries and Brakes: Service and Repairs