Specifications
| Fuel | Gasoline and Gaseous Fuel |
|---|---|
| Standby power | 30 kW |
| Oil capacity | 4.0 L |
| Alternator | Cummins/Onan YHB/YKH Hydrastar |
| Voltage options | 110 V, 190 V, 220 V, 115 V, 200 V, 230 V, 120 V, 208 V, 240 V, 127 V, 139 V |
| Phase | Three Phase |
| Battery group | SAE NUMDEr 29ONF |
| Battery quantity | 1 |
| Coolant capacity | 18.0 L |
| Max ambient | 40 °C |
Maintenance & consumables
for the Chrysler H135| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 1000 hr | find | ||
| Fuel filter | — | 300 hr | find | ||
| Oil filter | rust preventive oil | — | 300 hr | find | |
| Belt | — | 300 hr | find | ||
| Coolant filter | — | 500 hr | find | ||
| Oil | Change the oil and filter at the intervals recommended in the maintenance table. | — | 50 hr |
Common questions
What is the power rating of the Cummins/Onan YH?
The Cummins/Onan YH is rated 30 kW standby.
What engine does the Cummins/Onan YH use?
The Cummins/Onan YH is powered by the Chrysler H135 engine.
What fuel does the Cummins/Onan YH use?
The Cummins/Onan YH runs on Gasoline and Gaseous Fuel.
What is the oil capacity of the Cummins/Onan YH?
The Chrysler H135 engine in the Cummins/Onan YH has an oil capacity of 4.0 liters.
What alternator does the Cummins/Onan YH use?
The Cummins/Onan YH uses a Cummins/Onan YHB/YKH Hydrastar alternator.
Troubleshooting
22Fault codes
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| HI ENG TEMP | HI ENG TEMP lamp lights. Engine shuts down. | Engine has overheated (engine temperature has risen above 227°F/104°C) or coolant level is low (sets with coolant level sensor). | A. Check coolant level and replenish if low. b. Look for possible coolant leakage points and repair if necessary. c. Check for obstructions to cooling airflow and correct as necessary. d. Check for a slipping fan belt and tighten if loose. e. Reset control and restart after locating and correcting problem. Contact an Onan Dealer or Distributor if none of the above. |
| PRE LO OIL PRES | PRE LO OIL PRES lamp lights. Engine continues to operate. | Engine oil pressure has dropped to 20 psi (138 kPa). | If engine can be stopped, follow procedures in step 5. If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. |
| LO OIL PRES | LO OIL PRES lamp lights. Engine shuts down. | Engine oil pressure has dropped to 14 psi (97 kPa). | A. Check oil level and replenish if low. b. Reset control and restart. Contact an Onan Dealer or Distributor if oil pressure is not in the range of 30 to 70 psi (207 to 483 kPa). |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| PRE Hl ENGINE TEMP lamp lights. Engine continues to operate. | Engine has begun to overheat and engine temperature has risen to approximately 216°F (102°C). | A. Check air inlets and outlets and remove any obstructions to airflow. b. Open doors or windows in generator area to increase ventilation. c. Reduce load if possible by turning off non-critical loads. |
| 6. OVERCRANK lamp lights and engine stops cranking. | Possible fuel or ignition system problem. | A. Check for empty fuel tank, fuel leaks, or plugged or 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. Check for loose connections in the ignition primary, ignition secondary, or solenoid valve circuits and correct as required. e. Reset the control and restart after correcting the problem. Contact an Onan Dealer or Distributor for service if none of the above. |
| 7. Engine runs and then shuts down, OVERSPEED lamp lights. | Engine has exceeded normal operating speed. | Contact an Onan Dealer or Distributor for service. |
| 8. SWITCH OFF lamp flashes. | Start/Stop/Remote switch is in the Stop position which will prevent automatic starting if an automatic transfer switch is used. | Move the Start/Stop/Remote switch to the Remote position for automatic starting. |
| 9. LO FUEL lamp lights. Engine continues to run. | Gasoline fuel supply is running low. | Check fuel supply and replenish if necessary. If set has a combination Gas/Gasoline fuel system, place fuel selector switch in the GAS position to change over to natural gas operation. |
| 10. Engine shuts down and LO OIL PRES lamp lights. | Engine has run out of fuel. | Check fuel level and replenish as required. |
| 11. LO ENG TEMP lamp lights. Set is in standby mode but is not operating. | Engine coolant heater is not operating or is not circulating coolant. | 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. c. Contact an Onan Dealer or Distributor if none of the above. |
| 12. The FAULT 1 or FAULT 2 fault lamp lights. | The standard undesignated fault functions are programmed to shutdown the set when a fault is sensed. Fault 1 is time delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non time delay. | The fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits. |
| 13. Reset control. If control will not reset, the monitor board or a sensor may be at fault. | Contact an Onan Dealer or Distributor for service. | |
| 14. Engine starts from generator control panel (Note: The Start/Stop/Remote switch must be in the Remote position for automatic or remote starting). but will not start automatically or from a remote - | Remote circuit breaker is tripped. | Reset breaker and restart. Contact an Onan Dealer or Distributor if breaker trips after resetting. |
| 15. Engine will not crank. | Possible fault with control or starting system. | 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. Contact an Onan Dealer or Distributor for assistance if none of the above. |
| 16. No AC output voltage. | Field breaker is tripped. | Reset breaker. Contact an Onan Dealer or Distributor if voltage build up causes break |
| No AC Output Voltage at Rated Engine Speed | Flow Chart A | |
| Unstable Voltage. Engine Speed Stable at Rated Speed | Flow Chart B | |
| Output Voltage Too High or Too Low | Flow Chart C | |
| Exciter Field Breaker Trips | Flow Chart D | |
| Unbalanced Generator Output Voltage | Flow Chart E | |
| Unstable Output Voltage, Engine Speed Stable at Rated Speed | Check wiring harness from regulator assembly to end bell per Test (J). Are there any broken wires or loose connections? Repair wiring or replace as required. Check control panel voltage adjust rheostat and replace if defective. Does voltage cycle from zero to rated output? If yes, check voltage regulator adjustment/switch settings per adjustment (K). Is voltage stable within specifications at no load to full load range of generator set? Replace Voltage Regulator VRAS-2 per procedure (C) if not. Set r/min per instructions in appropriate engine manual. Do not replace Voltage Regulator VRAS-2 until external trouble has been corrected to avoid possible damage to new regulator board. | |
| Output Voltage Too High or Low | Refer to Generator Description, Optional Voltage Connections, and appropriate electrical schematic. Check condition of rotating diodes. Visually inspect for loose connections, faulty diodes, etc. Test rotating diodes per TEST (D). Is voltage within specifications at no load to full load range of generator set? If not, check voltage regulator adjustment/switch settings per adjustment (K). Is voltage stable within specifications at no load to full load range of generator set? Replace voltage regulator VRAS-2 if not. Do not replace Voltage Regulator VRAS-2 until external trouble has been corrected to avoid possible damage to new regulator board. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
54| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 150-1964 | Contact, Electrical | Sensor | PartsGeek | |
| 1861177 | Universal jointing compound which seals joints. Currently Hylomar. | Jointing compound | PartsGeek | |
| 21820116 | POWERPART Gasket remover | Gasket | PartsGeek | |
| 21820117 | To retain small fasteners where easy removal is necessary. | Threadlock | PartsGeek | |
| 21820118 | To retain small fasteners where easy removal is necessary. | Threadlock | PartsGeek | |
| 21820119 | To provide a heavy duty seal to components that have a light interference fit. | Stud lock | PartsGeek | |
| 21820120 | To provide a heavy duty seal to components that have a light interference fit. | Stud lock | PartsGeek | |
| 21820518 | POWERPART Gasket and flange sealant | Gasket | PartsGeek | |
| 21820638 | To retain components which have an interference fit. Currently Loctite 638. | Threadlock | PartsGeek | |
| 29ONF | Battery Group Size SAE NUMDEr | 1 | Battery | PartsGeek |
| 526-2129 | Switch, Over Speed | Sensor | PartsGeek | |
| A1024 | fuel lift pump | Fuel | PartsGeek | |
| A1027 | fuel filter canister | Filter | PartsGeek kuduparts $14.00 | |
| A1027/1 | canister of the quick release canister type | Filter | PartsGeek | |
| 150-1962 | Washer, Flat (M5) | Service part / kit | PartsGeek | |
| 150-1963 | Nut, Insulated | Service part / kit | PartsGeek | |
| 150-2038 | Washer, Flat (M10) | Service part / kit | PartsGeek | |
| 1734115 | POWERPART Lay-Up 3 | Service part / kit | eBay $15.89 PartsGeek | |
| 1762811 | POWERPART Lay-Up 2 | Service part / kit | PartsGeek | |
| 1772204 | POWERPART Lay-Up 1 | Service part / kit | PartsGeek | |
| 1820118 | POWERPART Universal jointing compound | Service part / kit | PartsGeek | |
| 1861108 | POWERPART Silicone RTV sealing and jointing compound | Service part / kit | PartsGeek | |
| 1861117 | Universal jointing compound | Service part / kit | PartsGeek | |
| 20011 | IO-IE03-3ODI | Service part / kit | PartsGeek | |
| 201-2299 | Spacer | Service part / kit | PartsGeek | |
| 21820121 | POWERPART Hydraulic threadseal | Service part / kit | PartsGeek | |
| 21820122 | POWERPART Easy Flush | Service part / kit | PartsGeek | |
| 21820125 | POWERPART Industrial grade super glue | Service part / kit | PartsGeek | |
| 21820126 | POWERPART Metal repair putty | Service part / kit | PartsGeek | |
| 21820127 | POWERPART Radiator stop leak | Service part / kit | PartsGeek | |
| 21820128 | POWERPART Safety cleaner | Service part / kit | PartsGeek | |
| 21820129 | POWERPART Griptite | Service part / kit | eBay $15.25 PartsGeek | |
| 21825001 | POWERPART Easy Flush | Service part / kit | Amazon eBay $33.01 PartsGeek | |
| 21825166 | POWERPART Antifreeze | Service part / kit | Amazon eBay PartsGeek | |
| 21826038 | POWERPART Silicone adhesive | Service part / kit | PartsGeek | |
| 232-2929 | Washer, Flat (M11) | Service part / kit | PartsGeek | |
| 302-1603 | I 302-1614 | Service part / kit | PartsGeek | |
| 4133J008 | oil separator cover | Service part / kit | PartsGeek | |
| 526-2120 | Washer, Lock - ET (M10) | Service part / kit | PartsGeek | |
| 612-574-5000 | International Use | Service part / kit | PartsGeek | |
| 720-1057 | Bracket Mounting | Service part / kit | PartsGeek | |
| 800-2029 | Screw, Cap - Hex Head (M6 x 1 x 12mm) | Service part / kit | PartsGeek | |
| 850-2006 | Washer, Lock - Spring (M6) | Service part / kit | PartsGeek | |
| 853-2010 | Screw, Cap - Hex Head (M10 x 1.5 x 40mm) | Service part / kit | PartsGeek | |
| 860-2006 | Nut, Hex (M5-0.8) | Service part / kit | PartsGeek | |
| 943-001 | Service part / kit | PartsGeek | ||
| A1017/A | vent screw | Service part / kit | PartsGeek | |
| A1017/B | vent screw | Service part / kit | PartsGeek | |
| A1026 | pre-filter | Service part / kit | PartsGeek | |
| A1026/1 | sediment bowl | Service part / kit | PartsGeek | |
| A21825474 | Universal jointing compound | Service part / kit | PartsGeek | |
| B70-O174 | Rotor | Service part / kit | PartsGeek | |
| I772 | I 302-1773 | Service part / kit | PartsGeek | |
| TB21-22 | and 23. Is residual voltage | Service part / kit | PartsGeek |
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
Parts manual — 943-0016 Onan YHB Alternator Service manual (02-1986) (Cummins/Onan)Parts manual — 971-0230 Onan YHB YKH Hydrastar Alternator Parts manual (Cummins/Onan)