The Cummins/Onan HQDPC is a 0.72 L 3-cylinder water-cooled, indirect-injection engine. It holds 2.6 L (0.7 gal) of oil.
Also known as: Cummins HQDPC
| Oil capacity | 2.6 L |
|---|---|
| Displacement | 0.719 L |
| Cylinders | 3 |
| Aspiration | Water-Cooled, Indirect-Injection |
No generator set in our catalog cites this exact engine designation yet; its specifications and fault codes are documented here.
How to read your Cummins/Onan engine serial & model number →
| Code | Meaning |
|---|---|
| Fault Code Blinking | Fault Code Blinking |
Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.
Compiled from service & troubleshooting documentation across every generator set that uses the Cummins/Onan HQDPC.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | coach battery bank requirements | — | |||
| Belt | — | ||||
| Coolant | — | ||||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
The Cummins/Onan HQDPC engine has an oil capacity of 2.6 liters.
The Cummins/Onan HQDPC has a displacement of 0.719 liters with 3 cylinders.
A commonly reported issue on generators using the Cummins/Onan HQDPC is: Weakness or Muscular Twitching. Fix: Get out into fresh air immediately. Get advice from 911, poison control or a medical center. Do not enable AUTO or start Generator Mode until the exhaust system has been repaired..