Specifications
| Fuel | Propane (Liquid or Vapor), Natural Gas |
|---|---|
| Frequency | 60.0 Hz |
| Controller | Detector, PowerCommand PCC2100 |
| Oil capacity | 6.0 L |
| Voltage options | 12 V |
| Phase | DC/AC |
| Battery group | 31 |
| Battery cranking | 660 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 7.0 L |
Maintenance & consumables
for the Cummins/Onan Modified Ford V-6 ESG-642| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | service as necessary | — | 8 hr | find | |
| Fuel filter | service as necessary | — | 100 hr | find | |
| Oil filter | service as necessary | — | 2000 hr | find | |
| Belt | — | 100 hr | find | ||
| Coolant | — | ||||
| Coolant filter | Check radiator hoses for wear and cracks | — | 100 hr | find | |
| Oil | See lubrication system section | — | 8 hr |
Common questions
What engine does the Cummins/Onan GGFD use?
The Cummins/Onan GGFD is powered by the Cummins/Onan Modified Ford V-6 ESG-642 engine.
What fuel does the Cummins/Onan GGFD use?
The Cummins/Onan GGFD runs on Propane (Liquid or Vapor), Natural Gas.
What is the oil capacity of the Cummins/Onan GGFD?
The Cummins/Onan Modified Ford V-6 ESG-642 engine in the Cummins/Onan GGFD has an oil capacity of 6.0 liters.
Troubleshooting
18Fault codes
| Code | Meaning |
|---|---|
| FAULT 1 or FAULT 2 | Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run. |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Green RUN lamp lights following engine startup. | Indicates all engine systems are normal. No corrective action required. | |
| PRE HI ENGINE TEMP lamp lights. | Engine continues to operate. (Engine can be programmed to shut down.) a. Indicates engine has begun to overheat and engine temperature has risen to approximately 220°F (104° C) or coolant level is low on optionally wired sets. b. If generator is powering non-critical and critical loads and cannot be shut down, use the following: a. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. c. If engine can be stopped, follow procedure in step 3. | |
| HI ENG TEMP lamp lights. Engine shuts down. | Indicates engine has overheated (engine temperature has risen above 230°F/110°C) or coolant level is low. Allow engine to cool down completely before proceeding with the following checks: 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. | |
| PRE LO OIL PRES lamp lights. Engine continues to operate. (Engine can be programmed to shut down.) | Indicates engine oil pressure has dropped to 30 psi (207 kPa). If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. b. If engine can be stopped, follow procedures in step 5. | |
| LO OIL PRES lamp lights. Engine shuts down. | Indicates engine oil pressure has dropped to 25 psi (172 kPa). Check oil level, lines and filters. a. If oil system is OK but oil level is low, replenish. b. Reset control and restart. Contact an authorized service center if oil pressure is not in the range of 40 to 65 psi (276 to 449 kPa). | |
| OVERCRANK lamp lights and engine stops cranking. | Or Engine runs, shuts down, and LO OIL PRES lamp lights.. a. Indicates possible fuel system problem. b. Open any closed fuel shutoff valve. c. Check for dirty or plugged air filter and replace if necessary (see Maintenance section). d. Gaseous fuel delivery to the set is inadequate. Contact an authorized service center for service. e. Reset the control and restart after correcting the problem. Contact an authorized service center for service if none of the above. | |
| OVERSPEED lamp lights and the engine shuts down. | Indicates engine has exceeded normal operating speed. 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. | |
| LO FUEL lamp lights. Engine continues to run or is in standby mode. | Indicates fuel supply pressure is marginally low (5 inches [127 mm] WC or less). Check for partially closed shutoff valve, empty propane supply tank. a. For natural gas fueled sets, check with the gas utility. | |
| LO ENG TEMP lamp lights. Set is in standby mode but is not operating. | (Lamp lights when engine coolant temperature is 70° F (28° C) or lower. Since the lamp goes out after the engine warms up, there should be no cause for alarm even during initial generator set operation.) a. Indicates engine coolant heater is not operating, not circulating coolant or ambient temperature too cold for heater to keep up with demand. b. Check for the following conditions: a. Coolant heater not connected to power supply. Check for blown fuse or disconnected heater cord and correct as required. b. Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required. | |
| Engine does not start | The engine does not reach a speed of approximately 1000 RPM within a few seconds, or the starter engages continuously for over 75 seconds in generator sets with optional overcrank control; or the engine does not run after a second attempt at starting | Place the Run-Stop-Remote switch in the STOP position and momentarily press the Reset switch to clear an overcrank fault. Wait two minutes for the starter motor to cool and then repeat the starting procedure. If the engine still does not start, refer to the Troubleshooting section. |
| Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits. | The monitor board or a sensor may be at fault. Contact an authorized service center for service. | |
| Engine starts from generator control panel but will not start automatically or from a remote panel. | Note: The Run/Stop/Remote switch must be in the Remote position for automatic or remote starting. | Remote circuit breaker is tripped. Reset breaker and restart. Contact an authorized service center if breaker trips after resetting. |
| Engine will not crank. | Indicates possible fault with control or starting system. Check for the following conditions: a. Fault lamp on. Correct fault and reset control. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Discharged or defective battery. Recharge or replace the battery. d. Emergency stop button (if equipped) pushed in. To reset, pull switch out and move Run/Stop/Remote switch to Stop position. Then push test switch to Reset/Lamp position. e. Contact an authorized service center if none of the above. | |
| No AC output voltage. | Field breaker is tripped. Reset breaker. Contact an authorized service center if voltage buildup causes breaker to trip. | |
| RUN or fault lamp(s) does not light when Lamp Test switch is engaged. | Contact an authorized service center for assistance. | |
| Green RUN lamp does not light following engine startup. | Indicates possible Start/Disconnect relay failure. Contact an authorized service center for assistance. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
2| Part # | Description | Qty | System | |
|---|---|---|---|---|
| TB1-5 | remote terminal of the time-delay module | Terminal block | buy | |
| 1-800-888-6266 | Phone number for Cummins Power Generation | Service part / kit | buy |
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.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | |||
| Standby |
Available documents
Spec sheetParts manualService manual