Cummins/Onan QST30 — Magnetic Pickup Adjustment
Adjustments · Magnetic pickup speed sensor
For the Cummins/Onan QST30, from the Cummins/Onan service manual.
Applies to: Cummins/Onan QST30
Before you start
- Jam nut over-torque will damage the magnetic pickup.
Procedure
- Ensure a ring gear tooth is centered under magnetic pickup hole.
- Screw magnetic pickup in until it contacts the targeted gear tooth.
- Back magnetic pickup out 1/2 to 3/4 turn counterclockwise.
- If feeler gauge can be inserted, back out 0.71 to 1.07 mm from gear tooth.
- Tighten jam nut while holding magnetic pickup.
Tools required
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)
- Speed sensor voltage 2.5 to 50 VAC
- If less than 2.5 VAC when cranking, screw pickup in 1/8 to 1/4 turn
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.