The Caterpillar 3056E (ATAAC) is a 5.98 L 6-cylinder naturally aspirated or turbocharged engine rated at 2400 rpm, producing up to 130 kW.
Also known as: Caterpillar 3056E (ATAAC)
Part of the Caterpillar 3056E engine family — 3 variants share parts & fitment.
| Displacement | 5.98 L |
|---|---|
| Cylinders | 6 |
| Aspiration | naturally aspirated or turbocharged |
| Rated speed | 2400 rpm |
| Gross power | 130 kW |
No generator set in our catalog cites this exact engine designation yet; its specifications and fault codes are documented here.
| Code | Meaning |
|---|---|
| active fault code | Electronic problem detected |
| logged fault | Problem has occurred, but is not presently active |
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 Caterpillar 3056E (ATAAC).
| Part # | Description | Category |
|---|---|---|
| QEHQ9943 | Not explicitly stated | other_service |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The Caterpillar 3056E (ATAAC) has a displacement of 5.98 liters with 6 cylinders.
A commonly reported issue on generators using the Caterpillar 3056E (ATAAC) is: Problem has occurred, but is not presently active.