Service parts for the ES-1922
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Frequency | 60.0 Hz |
|---|---|
| Voltage options | 120 V, 240 V, 120/240 V |
| Phase | three-phase |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Generator Air Outlet | G-1231 | Amazon eBay | ||
| Fuel filter | 19-26 | — | |||
| Oil filter | 28-38 | — | |||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | 45-60 | — | |||
| Spark plug | — |
Common questions
What air filter fits the Cummins/Onan ES-1922?
The Cummins/Onan ES-1922 uses air filter part number G-1231.
Troubleshooting
7Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Generator rotor is stopped or not rotating fast enough. | Troubleshoot entire hydraulic system. Check the inlet and outlet connections at the hydraulic motor, and make sure they are not swapped. Check the setting of the flow control needle valve. Check the generator set 'on' valve for malfunctions. |
| No output in load or line. | Troubleshoot entire hydraulic system. Check the inlet and outlet connections at the hydraulic motor, and make sure they are not swapped. Check the setting of the flow control needle valve. Check the generator set 'on' valve for malfunctions. |
| Generator is overheating. | Remove obstruction. Remove part of electrical load. |
| High or low voltage output. | Low voltage at no load: Verify that the entire hydraulic system functions adequately. Check the setting of the flow control needle valve with a frequency meter, then adjust the voltage adjusting rheostat. Low voltage with load: Check rectifier assembly. High voltage: Use a frequency meter to adjust the no-load frequency to 62-63 hz, then adjust the voltage to 117-118 volts. If voltage remains high, or does not adjust, then replace the voltage regulator. |
| Low or no hydraulic fluid flow. | Refer to Operation section for proper filling and bleeding procedures. Replace shutoff valve. Excessive torque is required to rotate the rotor shaft. Remove the pressure hydraulic lines at the motor and the fan guard at the opposite end of the generator to check for this condition. It should be possible to rotate the shaft by hand, although a degree of resistance will be present. Examine and replace/repair parts as needed. |
| Hydraulic system overheating. | Maintain adequate fluid flow in hydraulic system. Maintain adequate cooling water/air flow to (optional) heat exchanger. Make certain that heat exchanger and hydraulic lines are isolated from other sources of heat. Remove part of the electrical load. Excessive torque required to rotate the motor/generator shaft. Remove the pressure hydraulic lines at the motor and the fan guard at the opposite end of the generator to check for this condition. It should be possible to rotate the shaft by hand, although a degree of resistance will be present. Disable any other device and run |
| External hydraulic system leakage. | 1. Check for leakage at the hydraulic fittings and at the inlet and outlet of the hydraulic motor. 2. Cracked hydraulic lines. SOLUTIONS 1. Attempt to stop the leak by tightening the fitting (do not overtighten). If this does not stop the leak, replace fittings as necessary. Check the O-rings for damage. 2. Replace lines as necessary. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
4| Part # | Description | Qty | System | |
|---|---|---|---|---|
| ES-1822-1 | Single-phase control box | 1 | Control box | Amazon eBay |
| ES-1922-1 | THREE-PHASE CONTROL BOX | 1 | Control box | Amazon eBay |
| G-1231 | Generator Air Outlet | Air filter | Amazon eBay | |
| 943-0100 | Generator Set | 8 | Service part / kit | Amazon eBay |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.