Toro Groundmaster Series Service Manual page 154

Removing and Installing the Traction Pump Drive Assembly
g301635
1. Idler pulley
2. Flange lock nut (5 each)
3. Torsion spring
4. Shoulder bolt
5. Cap screw (3 each)
6. Idler pivot
Hydraulic System: Service and Repairs
7. Grease fitting
8. Key
9. Drive belt
10. Square head set screw (2 each)
11. Pump pulley
12. Idler arm
1. Park the machine on a level surface, lower the cutting unit (or attachment),
engage the parking brake, set the key switch to the O
the key from the key switch.
2. Raise the hood.
3. Use a 1/2 inch square drive on the hydraulic pump drive belt idler arm to
relieve the belt tension and remove the belt from the pump pulley.
4. Allow the idler arm to rest with no spring load.
5. Disassembly the pump drive components if necessary.
6. Inspect the drive belt, idler arm bushings, and idler pulley (bearings) and
replace if necessary.
7. If the pump pulley is removed:
A. Install the key and apply a thin coat of anti-seize lubricant to the pump
shaft before installing the pump pulley.
B. Align the pulley with the drive belt grooves on the engine stub shaft.
C. Use medium strength thread locker on the pulley set screws and tighten
the set screws from 15 to 17 N·m (135 to 155 in-lb).
Figure 50
13.
14.
15.
16.
Page 5–68
Flange bushing (2 each)
Retaining ring
Cap screw
Pump shaft
position and remove
FF
Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A