Toro Groundsmaster
4000?D Service Manual page 191

PRELIMINARY – For Toro Distributor and Toro Company use only.
Planetary Wheel Drive Disassembly (Figure 7)
1. Remove retaining ring (item 12).
2. Remove cover plate (item 14).
3. Remove input spacer (item 15) and thrust washer
(item 16).
4. Remove input shaft (item 17).
5. Remove carrier assembly (item 18).
NOTE: Steps 6 −10 are necessary only if inspecting or
replacing bearings and/or seals.
6. Remove cap screws (item 19) and remove ring gear
(item 11).
7. Remove retaining ring (item 10) and thrust washer
(item 9).
8. Use a puller to remove spindle (item 1) from housing
(item 6). Remove bearing cone (item 8).
9. Remove and discard all seals.
10.If bearings will be replaced, use a puller to remove
bearing cone (item 3) from spindle. Remove bearing
cups (items 4 and 7) from housing (item 6).
Groundsmaster 4000−D
Planetary Wheel Drive Assembly (Figure 7)
NOTE: Use new seal kit when assembling planetary
wheel drive.
1. Clean parts in solvent. Inspect parts for damage or
excessive wear and replace as necessary.
2. Install lip seal (item 2) to spindle (item 1).
3. Press bearing cups (items 4 and 7) into housing (item
6).
4. Press bearing cone (item 3) onto spindle (item 1).
5. Install seal (item 20) to housing (item 6). Assemble
housing (item 6) to spindle (item 1).
6. Press bearing cone (item 8) onto spindle and secure
with thrust washer (item 9) and retaining ring (item 10).
7. Install o−ring (item 21), then assemble ring gear
(item 11) to housing (item 6) with cap screws (item 19).
Torque cap screws to 9 ft−lb (12 N−m).
8. Install carrier assembly (item 18).
9. Install input shaft (item 17).
10.Install thrust washer (item 16) and input spacer (item
15).
11. Install o−ring (item 22), then install cover plate (item
14). Secure cover with retaining ring (item 12).
12.Check operation of planetary wheel drive before
installing assembly on the machine. With a constant
turning force applied, rotation of the planetary should be
consistent. If there is more drag at certain points, gears
are not rolling freely and the planetary should be ex-
amined for improper assembly or damaged compo-
nents.
Page 6 − 11 Axles, Planetaries and Brakes