Cummins/Onan — Drive Belt - Inspection
Maintenance · Drive belt and sheaves
From a Cummins/Onan operator's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DQFAA, Cummins/Onan DQFAB, Cummins/Onan DQFAC, Cummins/Onan DQFAD, Cummins/Onan QST30-G5 engine
Procedure
- Visually inspect the belt through the guarding.
- Check for intersecting cracks (longitudinal cracks intersecting transverse cracks are NOT acceptable).
- Check for frays or pieces of material missing.
- Check for glazed or cracked side walls and uneven sidewall wear.
- Visually inspect sheaves through the guarding for damaged or worn grooves, broken flanges and missing material.
- Contact your authorized distributor to have worn belts or sheaves replaced.
Specs & values
- Do not mix old and new V-belts on the same drive
- V-belts should never ride in the bottom of the groove
Full service-parts list: Cummins/Onan DQFAA →, Cummins/Onan DQFAB →, Cummins/Onan DQFAC →, Cummins/Onan DQFAD →
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.