HomeCummins/OnanCummins/Onan DHB 350.0

Cummins/Onan DHB 350.0 Generator Set

The Cummins/Onan DHB 350.0 is a 350 kW (437.5 kVA) ASTM No. 2 Diesel standby generator set powered by a Detroit Diesel V12-71T engine. It operates at 60 Hz. It holds about 34.1 L (9.0 gal) of oil and 138 L (36.5 gal) of coolant. Starting uses 2 group-8 batteries rated 450 CCA at 24 V. The set measures 2896×1651×1905 mm (114.0×65.0×75.0 in) and weighs about 3655 kg (8058 lb).

350 kW
Standby
13.96 L
Displacement
34.1 L
Oil capacity
1
Document types

How to read your Cummins/Onan serial & model number →

Specifications

FuelASTM No. 2 Diesel
Frequency60.0 Hz
Standby power350 kW
Standby kVA437
Prime power350 kW
Oil capacity34.1 L
AlternatorCummins/Onan YB 17 60 Hz
Power factor0.8
Battery group8D
Battery cranking450 CCA
Battery voltage24 V
Battery quantity2
Coolant capacity138 L
Dimensions (L×W×H)2896×1651×1905 mm
Dry weight3655 kg

Engine

Detroit Diesel V12-71T
Oil capacity34.1 L
Coolant capacity118.5 L
Displacement13.96 L
AspirationTurbocharged
Rated speed1800 rpm

Maintenance & consumables

for the Detroit Diesel V12-71T
ItemSpecCapacityPart #Interval
Air filter140-1326 PartsGeek FridayParts $100.99
Oil filterDetroit Diesel Allison find
Coolant118.5 liters
OilASTM No. 2 Diesel34.1 liters

Common questions

What is the power rating of the Cummins/Onan DHB 350.0?

The Cummins/Onan DHB 350.0 is rated 350 kW standby (437.5 kVA).

What engine does the Cummins/Onan DHB 350.0 use?

The Cummins/Onan DHB 350.0 is powered by the Detroit Diesel V12-71T engine.

What fuel does the Cummins/Onan DHB 350.0 use?

The Cummins/Onan DHB 350.0 runs on ASTM No. 2 Diesel.

What is the oil capacity of the Cummins/Onan DHB 350.0?

The Detroit Diesel V12-71T engine in the Cummins/Onan DHB 350.0 has an oil capacity of 34.1 liters.

What alternator does the Cummins/Onan DHB 350.0 use?

The Cummins/Onan DHB 350.0 uses a Cummins/Onan YB 17 60 Hz alternator.

Troubleshooting

11

Fault codes

CodeMeaningCauseRemedy
*Low oil pressure shutdown*Low oil pressure shutdown.A. Oil level. Replenish if necessary. b. Sensor. Faulty sensor will shut down engine. c. Refer to engine service manual for troubleshooting guide for oil system.
*High engine temperature shutdown*High engine temperature shutdown.A. Coolant level. Replenish if necessary. b. City water cooled sets. Check water flow, valves, etc. c. Check sensor; check thermostat. d. Radiator model, check fan belts, radiator for obstructions, etc.
Overspeed shutdownOverspeed shutdown.Check governor and throttle linkages for freedom of movement. Check overspeed switch.
Overspeed light ON, no shutdownOverspeed light ON, no shutdown.Disconnect wire at TB11-29. Light ON after reset; replace engine monitor board.
*Low oil pressure light ON*Low oil pressure light ON. No shutdown.Disconnect wire at TB11-30. Light ON after relay reset. Replace engine monitor board.
*High engine temperature light ON*High engine temperature light ON. No shutdown.Disconnect wire at TB11-31. Light ON after relay reset. Replace engine monitor board.

Symptoms & remedies

SymptomRemedy
Engine stops cranking and fault lamp lights, after cranking approximately 75 seconds.See engine service manual for troubleshooting fuel system. After correcting problem, reset engine monitor relay by placing Run-Stop/Reset-Remote switch to Stop/Reset, then back to the required running position.
Fault lamp lights immediately after engine starts.Check for: Overspeed condition as engine starts.
Fault lamp lights and engine shuts down after running for a period.Check the following: a. Oil level. Engine will shut down if sensor is closed. b. Check engine manual for troubleshooting oil system. c. High engine temperature. Check coolant level; check water flow (city water cooled sys
Overcrank fault lamp lights and engine stops cranking after approximately 75-seconds.See engine service manual for troubleshooting fuel system. After correcting fault, reset engine monitor relay by placing Run-Stop/Reset-Remote switch to Stop/Reset position, depressing Reset button, then to the required running position.
Engine runs, shuts down, cranks for 75-seconds, cranking cycle stops, Overcrank light ON.Check fuel supply.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

17
Part #DescriptionQtySystem
140-1326Cleaner, Air2Air filter PartsGeek FridayParts $100.99
140-1327Cap, Weather2Air filter PartsGeek
155-1364Adapter, Exhaust2Hose PartsGeek
191-0649Pulley, Alternator1Alternator PartsGeek
191-0725Guard, Alternator Belt1Belt PartsGeek
191-0733Regulator, Alternator1Sensor PartsGeek
191-0871Alternator, Charge - Includes Regulator and Fan (Motorola #70D44039B04)1Sensor PartsGeek
309-0178Sender, Water Temperature1Sensor PartsGeek
309-0272Sender, Oil Pressure1Sensor PartsGeek
416-0445Cable, Battery - Negative1Hose PartsGeek
416-0636Cable, Battery - Positive1Hose PartsGeek
503-0197Clamp, Hose - Oil Drain1Hose PartsGeek
504-0011Valve, Shutoff - Oil Drain1Pump PartsGeek
505-0021Bushing, Reducer - Oil Drain1Seal PartsGeek
505-0100Nipple, Close - Oil Drain1Hose PartsGeek
511-0092Belt, Alternator1Belt PartsGeek
332-1382Bracket, Terminal Mounting1Service 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

RatingLoadL/hgal/h
Standby100%109.028.7

Available documents

Operator's manual — 945-0302 Onan DHB Operator's and Parts Manual (1-1975) (Cummins/Onan)

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