Cummins/Onan — Coolant Filter - Remove and Install
Maintenance
From a Cummins/Onan owner's manual covering: M11, M1i Series Engines, ps200da. Check it applies to your exact model before use.
Applies to: Cummins/Onan M11 engine
Before you start
- Do not remove the radiator cap from a hot engine. Hot steam will cause serious personal injury.
- The valve must be in the ON position to prevent engine damage.
Procedure
- Remove the coolant system pressure cap and close the shutoff valve(s), if equipped.
- Turn the valve on the filter head to the OFF position.
- Remove and discard the coolant filter. Clean the gasket surface.
- Apply a film of lubricating oil to the gasket sealing surface of the new filter.
- Install the new filter; tighten until the gasket contacts the filter head surface.
- Tighten an additional one-half to three-fourths of a turn.
- Turn the valve on the filter head to the ON position and install the pressure cap.
- Operate the engine and check for leaks.
- After air has been purged, check the coolant level again.
Source: Cummins/Onan owner'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.