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Magnum MMG185DCAN6 Generator Set

The Magnum MMG185DCAN6 is a 188 kW (235 kVA) standby generator set powered by a John Deere PE6068HF485 engine. It is available at 600 V, 480 V, 208 V and 240 V, 3-phase, 60 Hz and rated 226 A. It holds about 13.7 L (3.6 gal) of oil and 31.5 L (8.3 gal) of coolant. Starting uses 1 battery rated 1000 CCA at 12 V. The set weighs about 2953 kg (6510 lb). An integrated tank holds 1295 L (342.1 gal). The same PE6068HF485 engine also powers generator sets from John Deere.

188 kW
Standby
6.8 L
Displacement
13.7 L
Oil capacity
1
Document types

Service parts for the MMG185DCAN6

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required
100-001Air filtersee priceAmazon

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

Frequency60.0 Hz
Standby power188 kW
Standby kVA235
Prime power172 kW
Oil capacity13.7 L
AlternatorMarathon 431PSL6505
Voltage options600 V, 480 V, 208 V, 240 V
Phase3
Rated current[226, 279, 630] A
Power factor['1 (1Ø), 0.8 (3Ø)']
Battery cranking1000 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity31.5 L
Dry weight2953 kg
Fuel tank1295.0 L

Engine

John Deere PE6068HF485
Oil capacity13.7 L
Coolant capacity29.8 L
Displacement6.8 L
Aspirationturbocharged
Rated speed1800 rpm

Maintenance & consumables

for the John Deere PE6068HF485
ItemSpecCapacityPart #Interval
Air filterAir Filter100-001 Amazon Amazon eBay
Fuel filter
Oil filter
Battery
Belt
Coolant
Oil
Spark plug

Common questions

How many kW is the Magnum MMG185DCAN6?

The Magnum MMG185DCAN6 is rated 188 kW standby (235.0 kVA).

What engine does the Magnum MMG185DCAN6 use?

The Magnum MMG185DCAN6 is powered by the John Deere PE6068HF485 engine.

What is the oil capacity of the Magnum MMG185DCAN6?

The John Deere PE6068HF485 engine in the Magnum MMG185DCAN6 has an oil capacity of 13.7 liters.

What alternator does the Magnum MMG185DCAN6 use?

The Magnum MMG185DCAN6 uses a Marathon 431PSL6505 alternator.

What air filter does the Magnum MMG185DCAN6 use?

The Magnum MMG185DCAN6 uses air filter part number 100-001.

Troubleshooting

6

Symptoms & remedies

SymptomCauseRemedy
LOW FUEL LEVEL SHUTDOWNFuel level is low or fuel lines are running dry.Check the fuel level on the LCD window. Confirm that the generator is sitting level to ensure an accurate reading. Check for leaks in the fuel tank. The fuel tank should not run dry under normal circumstances. If the fuel level is good and no leaks are found, check the fuel level sender and the connecting wiring for damage.
LOW OIL PRESSURE SHUTDOWNOil pressure is less than 20 psi (138 kPa).Check the level of the engine oil with the dipstick. Visually inspect the engine for oil leaks. If the oil level is good, restart the unit and verify the loss of oil pressure. Check the oil pressure sender.
LOW COOLANT LEVEL SHUTDOWNCoolant level in the radiator is low.Allow the engine to cool. Check the coolant level in the radiator. Inspect coolant hoses, engine block and water pump for visible leaks. Check engine oil to verify no coolant has mixed with it.
HIGH COOLANT TEMPERATURE SHUTDOWNCoolant temperature is 230°F (110°C) or more.Check the coolant level in the overflow jug. Restart the engine and read the coolant temperature to verify High Coolant Temperature Shut down. Allow the engine to cool. Add coolant to the overflow jug if it is low and then check the level of coolant in the radiator. Check the radiator shroud and ducting for blockage. Inspect coolant hoses, engine block and water pump for visible leaks. Check the tension of the serpentine drive belt for the water pump. If no other problems are found, remove the load on the generator and restart the engine.
OVERCRANK SHUTDOWNCheck the fuel level in tank. Check for proper operation of the fuel pump. Check air filter for blockage. If the engine will not start, consult the engine operator’s manual for additional information on trouble-shooting starting problems.
OVERSPEED OR UNDERSPEED SHUTDOWNDisconnect all loads and r

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Magnum MMG185DCAN6 troubleshooting guide (13 entries) →

Parts

2
Part #DescriptionQtySystem
100-001Air Filter1Air filter Amazon Amazon eBay
30175Decal, UN31A Tank Caution (Optional)1Service part / kit Amazon eBay FridayParts $85.00

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
Prime28.07.4
Standby32.38.5

Available documents

Service manual — 34309 (Magnum)