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Cummins/Onan HDZAA — connections between the engine harness and

For the Cummins/Onan HDZAA.

Applies to: Cummins Onan Hdzaa

Procedure

  1. 2
  2. If the switch does not open, one of 3 conditions
  3. Check for and remove blockages in the cooling
  4. Apply standard derates for elevation and tem-
  5. The oil temperature switch is normally open
  6. Verify that the rise over ambient does not ex-

Source: manual:983-0502 Onan HDZAA (spec A-B) Diesel Genset Service manual (06-2010).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.