Replace Fan Belt - 9.0 and 13.5 Tier II / Stage II Engines Only

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Raise Hood

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A - Hood Release

B - 1/2 in. Drive Breaker Bar

C - Belt Tensioner

If fan belt is damaged or breaks, replacement is necessary.

1. IMPORTANT: Fan drive belt is equipped with an automatic belt tensioner which does not require adjustment. Regular inspection of tensioner is required. See Inspect Fan Belt Tensioner in 1500 Hour Service section of this Operator’s Manual.

   Pull hood release (A) and raise hood.

2. Release tension on belt using 1/2 in. drive ratchet or breaker bar (B) on belt tensioner (C).

3. While continuing to apply pressure with breaker bar (B), remove belt from tensioner pulley (C).

4. 
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   9.0 L Fan Belt Layout

   
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   13.5 L Fan Belt Layout

   A - Fan Belt

   B - Accessory Drive Belt

   Relax tension and completely remove belt.

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5. Install new belt on all pulleys, except tensioner pulley. See fan belt layout diagram for correct belt routing.

6. Using breaker bar, release tension on tensioner pulley and position belt over pulley.

7. Slowly relax force on breaker bar.

8. Close and secure hood.