Belt Maintenance; Servicing The Alternator Belt; Servicing The Air Conditioner Compressor Belt; Tensioning The Blade-Drive Belts - Toro Groundsmaster 4100 Operator's Manual

Belt Maintenance

Servicing the Alternator
Belt
Service Interval: After the first 10 hours
Every 100 hours
Proper tension of the belt allows 10 mm (3/8 inch) of
deflection when a force of 44 N∙m (10 ft-lb) is applied
on the belt midway between the pulleys.
If the deflection is not 10 mm (3/8 inch), loosen the
alternator-mounting bolts
Note:
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 113
1. Alternator
2. Mounting bolt
Servicing the Air
Conditioner Compressor
Belt
Service Interval: After the first 10 hours
Every 100 hours
Cab model only
Check the condition and tension of the belt
113) after every 100 operating hours.
1. Proper tension allows 10 mm (3/8 inch)
deflection when a force of 44 N (10 lb) is applied
on the belt midway between the pulleys.
(Figure 113).
3. Compressor
4. Idler pulley
(Figure
2. If the deflection is not 10 mm (3/8 inch),
loosen the idler pulley mounting bolt
113). Increase or decrease the compressor
belt tension and tighten the bolt. Check the
deflection of the belt again to ensure that the
tension is correct.
Tensioning the Blade-Drive
Belts
Service Interval: After the first 10 hours
Every 50 hours
When properly tensioned, the inside measurement
of the extension spring (hook to hook) should be
approximately 8.3 to 9.5 cm (3-1/4 to 3-3/4 inches).
Once the correct spring tension is attained, adjust the
stop bolt (carriage bolt) until there is approximately 2
to 5 mm (0.065 to 0.185 inch) clearance between the
head of the bolt and the idler arm
Note:
Ensure that the belt is positioned on the spring
side of the belt guide
g020460
1. Extension spring
2. Stop bolt
3. Flange nut
4. Belt guide
75
(Figure
(Figure 114).
(Figure 114).
Figure 114
5. Measurement (hook to
hook)—approximately 8.3
to 9.5 cm (3-1/4 to 3-3/4
inches)
6. Eye bolt
7. Belt
g037383