Replacing The Traction Drive Belt; Replacing The Transmission Belt - Toro 30430 Operator's Manual

Mid-size mower proline gear 15hp with 36 in. side discharge mower
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Position B – Low belt wear
Position C – Medium belt wear
Position D – Most severe belt wear
Note: Do not over extend the spring. The spring length
should not exceed 7–5/8 inches with the paring brake
engaged (Fig. 55).
6. Install adjustment bolt assembly and spring.
7. Repeat for opposite side.
4
Figure 55
1. Position A, New belt
2. Position B, Low belt wear
3. Position C, Medium belt
wear
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. 56).
2. Loosen bottom two mounting screws enough to allow
belt to pass between drive pulley and idler support
(Fig. 56).
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. 56).
5
3
2
1
6
m–6595
4. Position D, Most severe
belt wear
5. Spring
6. Adjustment bolt, In
position A
38
6. Tighten the bottom two mounting screws enough to
allow the belt to pass between the drive pulley and idler
support (Fig. 56).
3
4
Figure 56
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 39.
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. 57).
7. Unhook tension spring from side of frame (Fig. 57).
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. 57).
11. Install clutch retainer to the engine deck (Fig. 57).
12. Connect clutch wire connector to wire harness.
13. Install PTO drive belt.
1
5
2
m–6597
4. Bottom capscrew
5. Traction drive belt

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