Service parts for the GEAA
Grouped by system, with how many of each the parts manual calls for.
Oil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Natural Gas, Propane |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 12 kW |
| Prime power | 10 kW |
| Oil capacity | 4.0 L |
| Voltage options | 12 V |
| Phase | Single Phase |
| Rated current | 65 A |
| Power factor | 0.8 |
| Battery cranking | 325 CCA |
| Battery voltage | 12 V |
| Coolant capacity | 11.5 L |
Maintenance & consumables
for the Cummins/Onan 4-cyl.| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Check Air Cleaner Xx X xX xX Check or Replace Spark Plugs X | — | 200 hr | ||
| Fuel filter | — | ||||
| Oil filter | Oil Filter | 928-0129 | Amazon eBay | ||
| Battery | Check the battery connections to make sure they are clean and tight. | — | 90 hr | ||
| Belt | Inspect the belt at the recommended intervals. Replace a worn or damaged belt before belt failure occurs. | — | 500 hr | ||
| Coolant | Check the coolant level during shutdown periods at the interval specified in Table 5-1. Use a 50/50 coolant solution (50% pure water and 50% antifreeze). | 11.0 L | — | 90 hr | |
| Coolant filter | — | ||||
| Oil | Change Crankcase Oil and Filter X5 | — | 200 hr | ||
| Spark plug | Remove the spark plugs and inspect for damaged or cracked insulators, worn electrodes, damaged gaskets or excessive carbon deposits. Replace the spark plug if any of these conditions are noted. | — | 365 hr |
Common questions
What size generator is the Cummins/Onan GEAA?
The Cummins/Onan GEAA is rated 12 kW standby.
Which engine powers the Cummins/Onan GEAA?
The Cummins/Onan GEAA is powered by the Cummins/Onan 4-cyl. engine.
What fuel type does the Cummins/Onan GEAA take?
The Cummins/Onan GEAA runs on Natural Gas, Propane.
What's the oil capacity on a Cummins/Onan GEAA?
The Cummins/Onan 4-cyl. engine in the Cummins/Onan GEAA has an oil capacity of 4.5 liters.
What is the cooling system capacity of the Cummins/Onan GEAA?
The Cummins/Onan GEAA cooling system holds 11.5 liters (3.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the continuous rating of the Cummins/Onan GEAA?
The Cummins/Onan GEAA is rated 10 kW prime (12 kVA), against 12 kW standby.
What voltage does the Cummins/Onan GEAA produce?
The Cummins/Onan GEAA is offered in 12 V, Single Phase-phase.
What size battery does the Cummins/Onan GEAA need?
The Cummins/Onan GEAA uses 12 V each, 325 CCA, per the manufacturer specification sheet.
What oil filter fits the Cummins/Onan GEAA?
The Cummins/Onan GEAA uses oil filter part number 928-0129.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| PRE HET/LOP lamp lights. Engine continues to operate. | Indicates engine has begun to overheat and engine temperature has risen to approximately 205°F (97°C) or coolant level is low. | A. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. |
| HI ENG TEMP lamp lights. Engine shuts down. | Indicates engine has overheated (engine temperature has risen above 215°F/102°C) or coolant level is low. | A. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check for a slipping fan belt and tighten if loose. d. Reset control and restart after locating and correcting problem. Contact an authorized service center if none of the above. |
| LO OIL PRES lamp lights. Engine shuts down. | Indicates engine oil pressure has dropped to 30 psi (207 kPa). | NOTE: See also step 5. |
| OVERCRANK lamp lights and engine stops cranking. | Indicates possible fuel system problem. | A. Check for empty fuel tank (LPG Vapor), fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary (see Maintenance section). c. Check for dirty or plugged air filter and replace if necessary (see Maintenance section). d. Reset the control and restart after correcting the problem. Contact an authorized service center for service if none of the above. |
| Engine runs and then shuts down, OVERSPEED lamp lights. | Contact an authorized service center for service. | |
| SWITCH OFF lamp flashes. | Indicates Run/Stop/Remote switch is in the Stop position which will prevent automatic starting if an automatic transfer switch is used. Move the Run/Stop/Remote switch to the Remote position for automatic starting. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan GEAA troubleshooting guide (22 entries) →
Parts
4| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 928-0129 | Oil Filter | 2 | Oil filter | Amazon eBay |
| FS-1176s | Crankcase Oil and Filter | Gas mixer | Amazon eBay | |
| LS1169s | FILTER | 1 | Oil filter | Amazon eBay |
| 928-0608 | Manual, Onan Installation | 1 | 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.
Available documents
This page was generated from the 6 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.