Toro Groundsmaster 580-D Service Manual page 291

9. Check and adjust the drive pulley height as follows:
A. Slide the height gauge under the drive pulley
(not under the hub).
B. Loosen jam nuts on three (3) motor mount ad-
justing screws. Equally tighten or loosen adjusting
screws until bottom of pulley rests on height gauge
(approximately 1 1/2 in. (38.1 mm)).
C. Tighten jam nuts to secure adjustment. Remove
height gauge.
10. Adjust belt tension (See Belt Tension Adjustment in
the Adjustments section of this chapter).
11. Tighten four (4) cap screws securing slide plate to
motor mount.
12. Check distance between idler arm and idler stop
screw (Fig. 21C). Distance should be approximately
.380 in. (9.7 mm). If necessary, adjust as follows:
A. Loosen jam nuts on idler stop screw.
B. Adjust stop screw until distance between idler
arm and idler stop screw is approximately .380 in.
(9.7 mm).
C. Tighten jam nuts to secure adjustment.
13. Install deck covers.
Outboard Cutting Units
1. Position machine on level surface, lower cutting unit
to shop floor, engage parking brake, stop engine and re-
move key from ignition switch.
Note: To remove lower belt, the other two belts must be
removed first.
2. Remove deck covers.Loosen flange locknuts on
idler pulleys and slide pulleys away from belts.
3. Remove flange head screws securing gearbox
plate to deck. To separate plate and drive motor assem-
bly from deck, rotate plate end toward traction unit. Tip
plate, motor and pulley assembly on its side and remove
from deck. Be careful not to bend, twist, kink or damage
flexible hydraulic lines.
4. Remove belt(s). Position new belts in pulleys and
assemble gearbox and plate assembly to deck.
5. Adjust belt tension (See Belt Tension Adjustment in
the Adjustments section of this chapter).
Groundsmaster 580--D
1. Top and Middle Grooves
2. Bottom Grooves
.380 in.
(9.7 mm)
1. Idler arm
1. Idler Pulley Flange Locknut
2. Drive Belts
Rev. E
Page 7 - - 13
1
2
3
Figure 21B
3. Top Grooves
4. Top and Middle Grooves
2 1
Figure 21C
2. Idler stop screw
2
Figure 22
4
1
Repairs