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John Deere PE6090HFG95 Engine

Name: John Deere PE6090HFG95 Engine
Brand: John Deere

The John Deere PE6090HFG95 is a 9 L 6-cylinder turbocharged engine rated at 1800 rpm, producing up to 328 kW. It powers generator sets from Magnum, including the MMG330.

Also known as: John Deere PE6090HFG95

9.0 L

Displacement

Cylinders

1800 rpm

Rated speed

328 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ Service intervals Torque & specs Fluids Fault codes Procedures

Engine specifications

Displacement	9.0 L
Cylinders	6
Aspiration	turbocharged
Rated speed	1800 rpm
Gross power	328 kW

Generator sets powered by this engine

Magnum MMG330

How to read your John Deere engine serial & model number →

Common problems

Overspeed or underspeed shut down
Fix: 1. Disconnect all loads and restart the generator. Read the frequency (Hz) on the LCD display. With no loads on the generator, the frequency should read 60.0 Hz. 2. If the frequency is above or below 60.0 Hz, the engine speed will have to be adjusted. See the engine manual for throttle adjustments on mechanical governed units and see the electronic governor manual for electronically controlled units.
Overcrank shut down
Fix: 1. Check the fuel level in the tank. 2. Check for proper operation of the fuel pump. 3. Check air filter for blockage. 4. If the engine will not start, consult the engine operation and maintenance manual for additional information on troubleshooting starting problems.
LOW OIL PRESSURE SHUTDOWN
Cause: Oil pressure is less than 20 psi (138kPa).
Fix: Check the engine oil level with a dipstick. Add oil if required. Visually inspect for oil leaks. If oil level is good, restart and verify loss of oil pressure. Check the oil pressure sender.
LOW FUEL LEVEL SHUT DOWN
Cause: Fuel level is low or fuel tank has leaks.
Fix: Check the fuel level on the LCD window. Ensure no leaks in the fuel tank. Check the fuel level sender and connecting wiring for damage.
LOW COOLANT LEVEL SHUT DOWN
Fix: Allow engine to cool. Check coolant level in the radiator. Access the radiator cap by removing the access panel.
High Coolant Temperature shut down
Fix: 1. Check the coolant level in the overflow jug. 2. Restart the engine and read the coolant temperature to verify High Coolant Temperature shut down. Stop the engine immediately if the coolant temperature is 230°F (110°C) or more. 3. 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. To access the radiator cap, you must remove the access panel from the top of the enclosure directly above the radiator. Add coolant until it is 3/4 in (2 cm) below the filler neck. Secure the radiator cap back into its original position. 4. Check the radiator shroud and ducting for blockage and remove any foreign matter. 5. Inspect coolant hoses, engine block and water pump for visible leaks. 6. Check the tension of the serpentine drive belt for the water pump. 7. If no other problems are found, remove the load on the generator and restart the engine. Check the coolant temperature and shut the engine down immediately if it starts to overheat.

Compiled from service & troubleshooting documentation across every generator set that uses the John Deere PE6090HFG95.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter			—

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Service intervals

Item	Action	Hours	Months	Notes
Engine maintenance/service reminder (MDC "WrnMaintenance")	Other	250 hr		Magnum Digital Controller default service reminder interval; reset to 250 hours after servicing
Engine oil and oil filter	Change	500 hr		First service — Subsequent changes every 500 hours when using John Deere Plus-50 II oil or equivalent; every 250 hours otherwise
Fan/serpentine belt	Inspect	500 hr	12 mo	Remove and check for wear; inspect pulleys and bearings while removed
Primary air cleaner element	Replace	500 hr		Or when dust valve restriction indicator gauge shows a vacuum of 25 in. H2O, whichever comes first
Exhaust filter (DPF) ash removal	Other	3000 hr		Expected service interval at least 3000 or 4500 hours based on engine power and operating conditions; actual service when indicator light appears
Trailer wheel bearing lubrication	Lubricate		12 mo	Minimum recommended lubrication is every 12 months or 12,000 miles (19,312 km)
Trailer wheel lug nuts	Adjust			First service — Re-torque lug nuts in sequence after the first road use

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Service specifications

Type	Item	Value	Unit	Condition
Other	Air Filter Restriction Indicator (filter minder gauge)	20	in. H2O	replace air filter when yellow center bar reaches red section
Other	Low Fuel Level Shutdown	5	% of tank remaining
Pressure	Low Oil Pressure Shutdown	20	psi (138 kPa)	engine controller shuts down engine below this pressure
Pressure	Oil Pressure Restart Check	5	psi (34 kPa)	shut engine down immediately if pressure does not reach this value within 5 seconds of restart
Speed	No-Load Frequency	60.0	Hz	no loads on the generator
Temperature	High Coolant Temperature Shutdown	230	°F (110°C) or more
Torque	Generator drive plate bolts	33	ft-lb (45 Nm)
Torque	Trailer wheel lug nuts, first pass	20-25	ft-lbs (27-33 Nm)	first pass
Torque	Trailer wheel lug nuts, second pass	50-60	ft-lbs (67-81 Nm)	second pass
Torque	Trailer wheel lug nuts, third pass	90-120	ft-lbs (122-162 Nm)	third pass
Voltage	Voltage Regulation	+/- 1%

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

Fluid	Grade	Standard	Ambient	Capacity	Notes
Fuel	ultra low sulfur diesel			459.0 gal (1738 L)	Usable fuel volume 423 gal (1601 L)

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Fault codes

Code	Meaning	Severity
Coolant temperature shutdown	Coolant temperature shutdown - 230°F	Shutdown
Coolant temperature warning	Coolant temperature warning - 220°F	Warning
Fuel level shutdown	Fuel level shutdown - 5%	Shutdown
Fuel level warning	Fuel level warning - 15%	Warning
Oil pressure shutdown	Oil pressure shutdown - 20 psi	Shutdown
Oil pressure warning	Oil pressure warning - 25 psi	Warning
Overspeed	Overspeed protection - 115%	Shutdown

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

Checking Generator Drive Plate Torque maintenance

Disconnect the engine starting battery
Remove the generator fan guard
Torque each of the drive plate bolts to the specification (MMG330: 33 ft-lb / 45 Nm)
Reinstall the generator fan guard and reconnect the battery

Resetting of the Time to Service Reminder maintenance

With the unit shut down, power up the controller with the Control On/Off toggle switch
Press Page Select until Engine Protect line is reached and press Enter
"WrnMaintanance" appears with the current service time hour setting below it
Press Enter; current run time in hours appears on the display
Reset the current run time hour setting to 250
Press Enter to save the run time hour setting
Move the Control On/I toggle switch to Control Off/O

Towing the Trailer / Wheel Lug Torque Sequence maintenance

Start all lug nuts by hand
First pass: tighten to 20-25 ft-lbs (27-33 Nm)
Second pass: tighten to 50-60 ft-lbs (67-81 Nm)
Third pass: tighten to 90-120 ft-lbs (122-162 Nm)
After the first road use, re-torque the lug nuts in sequence

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What is the displacement of the John Deere PE6090HFG95?

The John Deere PE6090HFG95 has a displacement of 9.0 liters with 6 cylinders.

Which generators use the John Deere PE6090HFG95 engine?

The John Deere PE6090HFG95 powers 1 generator set(s), including Magnum MMG330.

What is a common problem with the John Deere PE6090HFG95 engine?

A commonly reported issue on generators using the John Deere PE6090HFG95 is: Overspeed or underspeed shut down. Fix: 1. Disconnect all loads and restart the generator. Read the frequency (Hz) on the LCD display. With no loads on the generator, the frequency should read 60.0 Hz. 2. If the frequency is above or below 60.0 Hz, the engine speed will have to be adjusted. See the engine manual for throttle adjustments on mechanical governed units and see the electronic governor manual for electronically controlled units..