Cummins/Onan — Valve Tappets − Remove And Install
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA
Procedure
- Disconnect and connect wiring harness and fuel lines
- Drain and refill engine fluids
- Remove and install coolant hoses, fan, belt and belt guards
- Remove and install valve cover and rocker assy
- Remove and install injection lines
- Remove and install cylinder head
- Remove and install tappets
- Scrape carbon from cylinder head, tops of pistons, around valves and ports
- Adjust valve lash
- Torque cylinder head
- Test run unit
Specs & values
- SRT 04−118
- Standard Repair Time 5.0 h
Full service-parts list: Cummins/Onan HDKA →
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.