Cummins/Onan — Belt Removal
Repair & overhaul · Drive belt
From a Cummins/Onan operator's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan GGPA, Cummins/Onan GGPB, Cummins/Onan GGPC, General Motors GM 5.0 L engine
Before you start
- The belt idler is under tension. Do not allow your hands to get between the belt and pulley.
- Ignition of explosive battery gases can cause severe personal injury or death.
Procedure
- Disconnect the negative (-) cable from the battery to prevent accidental starting.
- Remove fan guard (between engine and radiator) to gain access to the serpentine belt.
- Insert 3/8 inch male square ratchet or breaker bar into tensioner arm and rotate counter clockwise until the spring tension on the belt is relieved.
- Remove serpentine belt.
Tools required
- 3/8 inch male square ratchet or breaker bar Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Cummins/Onan operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.