Servicing the Alternator Belt

CAUTION: Avoid injury! Rotating parts can catch fingers, loose clothing, or long hair. Wait for engine and all moving parts to stop before leaving operator’s station to adjust or service machine.


Checking Belt Tension

  1. Park machine safely. (See Parking Safely in Safety Section.) Allow engine to cool.

  2. Raise hood.

  3. Remove left side panel.

  4. LVAL38325
    LVAL38325-UN-21AUG12

    A - Thumb Position

    B - Adjusting Bolt

    C - Pivot Bolt

    Apply moderate thumb pressure to belt (A) halfway between the pulleys. Belt should deflect inward to approximately 9 mm (3/8 in.).



  5. Adjust belt tension if deflection is more or less than specified.


Adjusting Belt Tension

  1. Loosen adjusting bolt (B) and pivot bolt (C).

  2. Apply outward pressure to alternator housing until tension is correct.

  3. Tighten bolts (B) and (C).

  4. Check belt tension.

  5. Install left side panel.

  6. Lower hood.


Replacing Belt

NOTE: Replace alternator belt if excessive wear, damage or stretching is detected.

  1. Park machine safely. (See Parking Safely in Safety Section.) Allow engine to cool.

  2. Raise hood.

  3. Remove left side panel.

  4. Loosen adjusting bolt (B) and pivot bolt (C).

  5. Apply inward pressure to alternator housing.

  6. Remove belt from alternator sheave, fan sheave and crankshaft sheave.

  7. Route belt over fan and remove.

  8. Install new belt over fan and onto sheaves.

  9. Apply outward pressure to alternator housing until tension is correct.

  10. Tighten bolts (B) and (C).

  11. Check belt tension. Adjust as necessary.

  12. Install right side panel.

  13. Lower hood.

KN52281,1003F17-19-20120823