Toro groundsmaster 455-D - Deck Belt and Clutch Adjustment; Removing Center Deck Belt and Adjusting Deck Clutch

43
1
2
Figure 73
1. Clutch rod 2. Clutch wire
Removing the Center Deck Belt
Idler pulley spring loaded, use caution when
relieving spring tension on center belt.
Warning
1. Lower cutting unit to the shop floor. Remove belt
covers from center and wing cutting units.
2. To relieve tension on center deck belt, pull back on idler
pulley until holes in idler adjustor tube and tube sleeve
are aligned. Thread a 5/16 capscrew into holes retaining
parts.
3. Remove the wing deck belts; refer to Removing the
Wing Deck Belts, page 42.
4. Remove the 2 flange head screws securing drive shaft
cover to gear box support (Fig. 74) and remove cover.
5. Remove capscrews and nuts securing front of gear box
support to deck channels and loosen capscrews securing
rear of gear box support to deck channels (Fig. 74).
2
2
1
Figure 74
1. Gear box support 2. Capscrews and nuts
6. Raise front of gear box support and remove old belt
from around gear box pulley and remaining pulleys.
7. Route new belt around appropriate pulleys as shown in
Figure 75.
Figure 75
8. Remount gear box support to deck channels with
capscrews and nuts previously removed.
9. Reinstall drive shaft cover to gear box support with the
4 flange head screws previously removed.
10. Remount clutch rod to deck with hairpin cotter and plug
clutch connector into harness.
11. While holding idler pulley adjustor in position,
carefully remove capscrew securing idler adjustor tube
to tube sleeve. Allow idler pulley to release, tensioning
belt.
12. Check idler pulley adjustment; refer to Adjusting the
Belt Tension, page 42.
13. Reinstall belt covers.
Adjusting the Deck Clutch
The deck clutches are adjustable to ensure proper
engagement and blade braking. Check clutch adjustment
after the first 50 hours of operation, thereafter; every 200
hours. Adjust if required.
Important Mis–adjusted clutches will slip and generate
excessive heat (blueing) resulting in failure.
1. To adjust clutch, tighten or loosen locknuts on flange
studs (Fig. 76).
2. Check adjustment by inserting feeler gauge through
slots next to flange studs.
3. The proper disengaged clearance between the clutch
plates is 0.011–0.021 inches (0.28–0.53 mm). It will be
necessary to check this clearance at each of the three
slots to ensure the plates are parallel to each other.