Cummins/Onan 80MDKAL11454B — Pump Belt Adjustment
Adjustments · pump/alternator belt
For the Cummins/Onan 80MDKAL11454B, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan MDKAL, Kubota D1005 engine
Before you start
- Accidental starting of the generator set can cause severe personal injury or death; stop the set and disconnect battery cables before maintenance.
- Operation with too much tension on the pump belt may cause reduced belt life; do not overtighten.
Parts for this job
- 185-6934 Belt — Cummins/Onan MDKAL Amazon eBay $70.52
Part numbers from the service-parts lists for Cummins/Onan MDKAL, Kubota D1005 engine. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Disable the genset by removing the battery cables, negative (-) cable first.
- Open the genset service door; on sets without sound shields remove the belt guard.
- Loosen the bottom pivot bolt on the alternator.
- Loosen the bolt that passes through the long slot in the alternator mounting bracket.
- Slide the alternator until the tension is right.
- Do not operate the genset without the belt guard in place.
Specs & values
- Belt tension correct when 22 pounds (10 kg) finger pressure at middle of belt deflects it about 0.4 inch (10 mm)
Full service-parts list: Cummins/Onan MDKAL →, Kubota D1005 engine →
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.