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Home›Repair guides›Cummins/Onan›Priming the Lubrication System

Cummins/Onan GTA14 / GTA14 qi 20 NA — Priming the Lubrication System

Maintenance

For the Cummins/Onan GTA14 / GTA14 qi 20 NA, from the Cummins/Onan owner's manual.

Applies to: Cummins/Onan GTA14 qi 20 NA, Cummins/Onan GTA14 engine

Before you start

  • After running several minutes, add oil to compensate for oil absorbed by filter and oil cooler

Parts for this job

Part numbers from the service-parts list for Cummins/Onan GTA14 qi 20 NA. Verify against your serial number before ordering; some links are affiliate links.

Procedure

  1. Fill crankcase to the H (high) mark on dipstick.
  2. Crank engine 15 seconds with ignition OFF until oil pressure appears.
  3. Refill crankcase to the H (high) mark on dipstick.

Specs & values

  • Do not engage starter more than 30 seconds at a time; wait 2 minutes between starts

Full service-parts list: Cummins/Onan GTA14 qi 20 NA →

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.

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