Cummins/Onan — Alternator Belt - Adjust
Adjustments
From a Cummins/Onan owner's manual covering: K 19, K19, K19 Series, KTA19, KTTA19, Kt19. Check it applies to your exact model before use.
Applies to: Cummins/Onan K 19, Cummins/Onan Kt19, Cummins/Onan K19 Series (KT19/KTA19/KTTA19) engine, Cummins/Onan KT19 engine, Cummins/Onan KTA19 engine
Before you start
- The lower jam nut has left-hand threads.
Procedure
- Loosen alternator and adjusting link mounting capscrews.
- Loosen jam nuts on adjusting screw.
- Turn adjusting screw clockwise to tighten belt tension.
- Tighten jam nuts to 55 Nm [40 ft-lb].
- Tighten adjusting link and alternator mounting capscrews to 55 Nm [40 ft-lb].
- Check belt tension again.
Specs & values
- Belt tension: 225 Nm [165 ft-lb]
- Jam nuts: 55 Nm [40 ft-lb]
Full service-parts list: Cummins/Onan K 19 →, Cummins/Onan Kt19 →
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.