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Cummins/Onan — Conducting General Inspections

Maintenance · Genset

From a Cummins/Onan operator's manual covering: 5.5 HGJAA, 5.5 HGJAB, 5.5 HGJAC, 6.5 HGJAA, 6.5 HGJAB, 6.5 HGJAC, 7.0 HGJAA, 7.0 HGJAB, 7.0 HGJAC. Check it applies to your exact model before use.

Applies to: Cummins/Onan HGJAA, Cummins/Onan HGJAB, Cummins/Onan HGJAC

Before you start

  • Do not operate the genset if there is an exhaust leak.
  • Gasoline and LPG are highly flammable and explosive.

Procedure

  1. Check engine oil level.
  2. Look and listen for exhaust system leaks while running.
  3. Check all CO monitors for proper operation.
  4. Check fuel system hose, tube and pipe fittings for leaks.
  5. Check battery terminals for clean, tight connections.
  6. Check the genset mounting bolts are secure.
  7. Make sure air inlet and outlet openings are not clogged or blocked.

Full service-parts list: Cummins/Onan HGJAA →, Cummins/Onan HGJAB →, Cummins/Onan HGJAC →

Source: Cummins/Onan operator'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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