Cummins/Onan — Lock Fuel Pump Timing
Repair & overhaul · Fuel Injection Pump
From a Cummins/Onan service manual covering: QST30, QST30 G-Drive, QST30-G3. Check it applies to your exact model before use.
Applies to: Cummins/Onan QST30-G3, Cummins/Onan QST30 engine
Procedure
- Clean the debris from around the fuel pump timing pin cap.
- Remove cap (2), sealing washer (3) and timing pin (1).
- Reverse the timing pin and re-install in the locked position.
- Install cap and sealing washer. Torque cap to 30 N-m [22 ft-lb].
Specs & values
- Timing Pin Cap 30 N-m [22 ft-lb]
Full service-parts list: Cummins/Onan QST30-G3 →
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.