Cummins/Onan 3100 series — Magnetic Speed Pickup Unit (MPU) Installation
Installation · MPU sensor
For the Cummins/Onan 3100 series, from the Cummins/Onan service manual.
Applies to: Cummins/Onan GGKD
Before you start
- Do not use fan blade to bar over engine.
Procedure
- Bar the engine until a gear tooth on the flywheel lines up in the center of the mounting hole.
- Thread the sensor in gently by hand until it just touches the gear tooth.
- Back it out one quarter turn and set the locknut.
Full service-parts list: Cummins/Onan GGKD →
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.