Replacing The Traction Drive Belt; Replacing The Transmission Belt - Toro 30438 Operator's Manual

Matching Height of Cut
1. Check the tire pressure on both deck and traction unit.
2. Set the height-of-cut to the 4 inch (101.6 mm) position
following the height-of-cut decal.
3. With the machine on level surface, position one blade
front-to-rear (Fig. 63). Measure at A and from level
surface to the cutting edge of the blade tips (Fig. 64).
4. The measurement should be 4 inch (101.6 mm).
Front
Figure 63
MEASURE FROM
CUTTING EDGE TO
A LEVEL SURFACE
Figure 64
5. If it does not measure correctly, add air pressure in rear
tires to raise height–of–cut
6. If it does not measure correctly, decrease air pressure in
rear tires to lower height–of–cut.
7. Check carrier frame front–to–rear pitch.
Replacing the Traction Drive
Belt
Service Interval/Specification
Check all belts after every 50 operating hours or monthly,
whichever occurs first. Look for cracks, wear, and signs of
overheating.
1. Remove the top capscrew securing idler support and
idler bracket to rear frame (Fig. 65).
2. Loosen bottom two mounting screws enough to allow
belt to pass between drive pulley and idler support
(Fig. 65).
A
m–1078
m–2550
3. Raise the wheel off the ground, to allow the belt to be
removed, and remove the belt.
4. Install a new belt.
5. Install the top capscrew securing the idler support and
idler bracket to the rear frame (Fig. 65).
6. Tighten the bottom two mounting screws enough to
allow the belt to pass between the drive pulley and idler
support (Fig. 65).
3
4
1. Top capscrew
2. Idler bracket
3. Idler support
Replacing the Transmission
Belt
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Remove PTO drive belt. Refer to Replacing the PTO
Drive Belt on page 42.
4. Raise the front of the machine and hold with jack
stands.
5. Disconnect clutch wire connector from wire harness.
6. Disconnect clutch retainer from the engine deck
(Fig. 66).
7. Unhook tension spring from side of frame (Fig. 66).
8. Loosen pivot bolt enough to remove traction belt from
the drive pulley and clutch.
9. Install new belt around clutch and drive pulley.
10. Torque pivot bolt to 35-40 ft–lb (47-54 N m). Install
tension spring between idler arm and frame bracket
(Fig. 66).
11. Install clutch retainer to the engine deck (Fig. 66).
41
1
5
2
Figure 65
4. Bottom capscrew
5. Traction drive belt
m–6597