Belt Maintenance; Checking The Alternator Belt; Replacing The Blade Drive Belts - Toro 30360 Operator's Manual

Belt Maintenance

Checking the Alternator Belt

Service Interval: Every 100 hours
Check the condition and tension of the belts (Figure 54) after
every 100 operating hours.
1. Proper tension will allow 10 mm (3/8 inch) deflection
when a force of 44 N (10 lb.) is applied on the belt
midway between the pulleys.
2. If the deflection is not 10 mm (3/8 inch), loosen the
alternator mounting bolts (Figure 54). Increase or
decrease the alternator belt tension and tighten the
bolts. Check the deflection of the belt again to ensure
that the tension is correct.
Figure 54
1. Mounting bolt
Replacing the Blade Drive
Belts
Service Interval: Every 50 hours
The blade drive belts, tensioned by the spring loaded idler
pulleys, are very durable. However, after many hours of use,
the belts will show signs of wear. Signs of a worn belt are:
squealing when belt is rotating, blades slipping when cutting
grass, frayed edges, burn marks and cracks. Replace the belts
if any of these conditions are evident.
1. Lower the cutting unit to the 1 inch height-of-cut
setting, move the throttle lever to the Slow position,
stop the engine, set the parking brake, and remove the
ignition key.
2. Remove the belt covers from the top of the cutting unit
and set the covers aside.
3. Using a breaker bar or similar tool, move the idler
pulley for the top belt (Figure 55) away from the top
2. Alternator
drive belt to release the belt tension and allow the belt
to be slipped off the pulleys.
1. Top belt
2. Top-idler pulley
4. Using a breaker bar or similar tool, move the idler
pulley for the bottom belt (Figure 55) away from the
bottom drive belt to release the belt tension and allow
the belt to be slipped off the pulleys.
5. Route a new belt around the gearbox pulley, bottom
spindle pulleys, and idler pulley assembly as shown in
Figure 55.
6. Route a new belt around the top spindle pulleys and
idler pulley assembly as shown in Figure 55.
7. Install the belt covers.
49
Figure 55
3. Bottom belt
4. Bottom-idler pulley