Cummins/Onan — Fan Belt - Replace (01-23)
Maintenance
From a Cummins/Onan service manual covering: K 19, K19, KTA19, KTA19-M, KTA19G2, KTTA19, Kt19. Check it applies to your exact model before use.
Applies to: Cummins/Onan K 19, Cummins/Onan Kt19, Cummins/Onan K19 engine
Before you start
- The fan belt idler is under tension. Do not allow your hands to get between the idler and the belt, or the fan hub. Personal injury can result.
- Be sure the fan idler spring tension is released.
Procedure
- Use an 8-point socket and breaker bar or large wrench. Hold the idler in position against the spring tension and remove the capscrew.
- Slowly turn the wrench until the spring tension is relieved.
- Remove the fan belt.
- Visually inspect the belt for cracks, glazing, tears or cuts.
- Install the belt.
- Rotate the idler against the spring tension until the capscrew holes are aligned. Install the capscrew.
- Tighten the capscrew to 45 N·m [35 ft-lb].
- Slowly turn the wrench until the idler is against the belt.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Spring Tension: 35 N·m [45 ft-lb]
- Capscrew 45 N·m [35 ft-lb]
Full service-parts list: Cummins/Onan K 19 →, Cummins/Onan Kt19 →
Source: Cummins/Onan service 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.