Checking and Adjusting Alternator Belt

CAUTION: Avoid injury! Entanglement in a belt or sheave can cause serious injury. Stop engine and wait for all moving parts to stop.

Checking Belt Tension

1. Raise attachment to service position. (See Using the Lift Cylinder Safety Support in the Safety section.)

2. Park machine safely. (See Parking Safely in the Safety section.)

3. 
   TCAL45056-UN-14MAY13

   Gas model shown. Alternator on opposite side of engine on Diesel model. Some parts removed for photo clarity.

   Check alternator belt (A):
   • Inspect belt for excessive wear, damage, or stretching while in position on the sheaves.
   
   
   • Apply thumb pressure to the belt halfway between the sheaves. Belt deflection must meet specification.

     Item	Measurement	Specification
     Alternator Belt	Deflection	10 mm (3/8 in.)

   
   

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Adjusting Belt Tension

1. 
   TCAL45057-UN-14MAY13

   Gas model shown. Alternator on opposite side of engine on Diesel model. Some parts removed for photo clarity.

   Loosen alternator adjustment bolt (B).

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2. Loosen alternator mounting bolt (C).

3. Apply outward pressure to the alternator housing.

4. Tighten alternator adjustment bolt and mounting bolt.

5. Check belt tension:

   • Apply thumb pressure to the belt halfway between the sheaves. Belt deflection must meet specification.

     Item	Measurement	Specification
     Alternator Belt	Deflection	10 mm (3/8 in.)

   
   

6. Lower attachment.