Cummins/Onan GTA38 / GTA50 — Fan Belt - Remove and Install
Repair & overhaul · Cooling system
For the Cummins/Onan GTA38 / GTA50, from the Cummins/Onan owner's manual.
Applies to: Cummins/Onan GTA38 engine, Cummins/Onan GTA50 engine
Before you start
- The fan belt idler is under tension. Do not allow hands between the idler and the belt.
Procedure
- Remove the fan idler shock absorber.
- Use 8-point socket/breaker bar to hold the idler against spring tension.
- Remove the cap-screw and slowly relieve spring tension.
- Remove the fan belt.
- Inspect the belt for cracks, glazing, tears or cuts.
- Install the belt.
- Rotate the idler against spring tension until cap-screw holes align.
- Install cap-screws; torque 45 Nm [85 ft-lb].
- Turn wrench until the idler is against the belt.
- Install the shock absorber.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Cap-screws 45 Nm [85 ft-lb]
- Spring tension 35 Nm [45 ft-lb]
Source: Cummins/Onan owner'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.