Cummins/Onan — Valve Guides − Replace
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 and injectors
- Remove and install cylinder head
- Remove and install exhaust manifold and intake manifold
- Remove and install valve guides
- Remove valves from head (caps, spring collet, spring retainer and spring, stem seal, valve)
- Scrape carbon from cylinder head, tops of pistons, around valves and ports
- Refinish valve seats
- Grind valves
- Adjust valve lash
- Torque cylinder head
- Test run unit
Specs & values
- SRT 02−302
- Standard Repair Time 5.9 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.