Cummins/Onan QST30 / QST30 G-Drive — Magnetic Pickup Installation
Installation
For the Cummins/Onan QST30 / QST30 G-Drive, from the Cummins/Onan service manual.
Applies to: Cummins/Onan QST30, Cummins/Onan QST30 engine
Before you start
- Jam nut over-torque will damage the magnetic pickup.
Procedure
- Remove the pipe plug on the right-hand side of the flywheel housing.
- Ensure that a ring gear tooth is centered under the magnetic pickup hole; rotate the flywheel if necessary.
- Screw the magnetic pickup in until it contacts the targeted gear tooth; do not use excessive pressure.
- Back the magnetic pickup out (counterclockwise) 1/2 to 3/4 turn.
- If a feeler gauge fits between pickup and tooth, back out 0.71 to 1.07 mm [0.028 to 0.042 in.].
- Tighten the jam nut on the flywheel housing while holding the magnetic pickup.
- Torque the jam nut to 34-47 N-m [25-35 ft-lb].
- Plug the electrical connection into the magnetic pickup, when required.
- Install the main generator, if it was removed.
Tools required
- Feeler gauge Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Jam nut torque 34-47 N-m [25-35 FridayParts $25.27 ft-lb]
- Pickup to gear tooth 0.71 to 1.07 mm [0.028 to 0.042 in.]
Full service-parts list: Cummins/Onan QST30 →
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.