Cummins/Onan 4MCCK / 605MCCK — Gear Cover Installation
Repair & overhaul
For the Cummins/Onan 4MCCK / 605MCCK, from the Cummins/Onan service manual.
Applies to: Cummins/Onan 605MCCK, Cummins/Onan MCCK, Cummins/Onan MCCK engine
Before you start
- Be careful not to damage the gear cover oil seal.
Procedure
- Make sure the pin in the gear cover engages the metal-lined (smoothest) hole in the governor cup.
- Turn the governor cup so the metal-lined hole is at 3 o'clock.
- Check that the bearing ball is in position.
- Turn the governor arm and shaft clockwise as far as possible and hold in this position.
- Install the gear cover flush against the crankcase.
- Adjust the roll (stop) pin to protrude 3/4 inch from the cover mounting surface.
Tools required
- soft-faced hammer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Roll pin protrudes 3/4 in from cover mounting surface
Full service-parts list: Cummins/Onan 605MCCK →, Cummins/Onan MCCK →
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.