Toro 31900A - Belt Maintenance; Checking the Alternator-Belt Tension; Servicing the Traction Belt

Belt Maintenance
Checking the
Alternator-Belt T ension
Service Interval : After the rst 10 hours
After the rst 50 hours
Every 100 hours
Proper tension of the belt allows 10 mm (3/8 inch) of
deection when a force of 4.5 kg (10 lb) is applied on
the belt midway between the pulleys.
If the deection is not 10 mm (3/8 inch), perform the
following steps:
1. Loosen the alternator-mounting bolt ( Figure 68 ).
g020537
Figure 77
1. Mounting bolt 2. Alternator
2. Increase or decrease the alternator-belt tension
and tighten the bolt.
3. Check the deection of the belt again to ensure
that the tension is correct.
Servicing the T raction Belt
Checking the T raction Belt
Service Interval : Every 100 hours
Inspect the traction belt for signs of excessive wear
or damage.
Replace the belt if it is excessively worn or damaged;
refer to ( page ) .
Replacing the T raction Belt
g467783
Figure 78
1. T raction belt 4. Idler pulley
2. Insert ratchet here 5. Engine pulley
3. Pump pulley
Removing the T raction Belt
1. Disconnect the PT O shaft from the attachment
gearbox; refer to your attachment Operator ’ s
Manual .
2. Unplug the clutch-wire-harness connector from
the machine wire harness.
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