Cummins/Onan — Bleed the Engine Fuel Lines
Maintenance · Fuel system
From a Cummins/Onan owner's manual covering: 6CTA8.3, CFP83-F10, CFP83-F20, CFP83-F30, CFP83-F40. Check it applies to your exact model before use.
Applies to: Cummins/Onan 6CTA8.3, Cummins/Onan CFP83-F10, Cummins/Onan CFP83-F20, Cummins/Onan CFP83-F30, Cummins/Onan CFP83-F40, Cummins/Onan 6CTA8.3G2 engine, Cummins/Onan 6CTAA8.3G3 engine
Before you start
- Fuel is flammable.
- Do not bleed a hot engine as this could cause fuel to spill onto a hot exhaust manifold creating a danger of fire.
Procedure
- Loosen the banjo connector bleed screw at the fuel filter housing.
- Operate the plunger on the fuel lift pump until the fuel flowing from the fitting is free of air.
- Tighten the bleed screw. Torque: 9 N•m [80 in-lb].
Specs & values
- Bleed screw torque 9 N•m [80 in-lb]
Full service-parts list: Cummins/Onan CFP83-F10 →, Cummins/Onan CFP83-F20 →, Cummins/Onan CFP83-F30 →, Cummins/Onan CFP83-F40 →
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.