Cummins/Onan — Block, Short - Replace
Repair & overhaul · short block
From a Cummins/Onan service manual covering: E124V, E125, E140. Check it applies to your exact model before use.
Applies to: Onan Corporation (Cummins Power Generation) E124V, Onan Corporation (Cummins Power Generation) E140
Procedure
- Disconnect and connect choke cable, governor linkage, electrical wiring
- Drain oil and remove filter
- Remove and install external accessories, housings, connecting lines, exhaust system
- Remove and install intake manifold, starter, flywheel and stator, cylinder head
- Remove and install gearcase cover, oil base, oil pump, oil filter and adapter
- Install short block assembly with new gaskets
- Torque to proper spec
- Fill oil pan with oil
- Test run unit
Full service-parts list: Onan Corporation (Cummins Power Generation) E124V →, Onan Corporation (Cummins Power Generation) E140 →
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.