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Home›Engines›John Deere 6068TF250

John Deere 6068TF250 Engine Engine

The John Deere 6068TF250 is a 0.01 L 6-cylinder turbocharged engine rated at 1800 rpm, producing up to 106 kW. It powers generator sets from Atlas Copco, John Deere and MQ Power, including the QAS 108, DCA-125SSJU and DCA-125SSJU2. It holds 17.36 L (4.6 gal) of oil and 7 L (1.8 gal) of coolant.

Also known as: John Deere 6068TF250

Part of the John Deere 6068 engine family — 62 variants share parts & fitment.

0.0068 L
Displacement
6
Cylinders
1800 rpm
Rated speed
106 kW
Gross power

Engine specifications

Oil capacity17.3648938272 L
Coolant capacity7.0 L
Displacement0.0068 L
Cylinders6
AspirationTurbocharged
Rated speed1800 rpm
Gross power106 kW

Generator sets powered by this engine

4

Shared across brands: Atlas Copco, John Deere, MQ Power

Atlas Copco QAS 108John Deere 6068TF250MQ Power DCA-125SSJUMQ Power DCA-125SSJU2

Troubleshooting

38

Symptoms & remedies

SymptomCauseRemedy
Engine hard to start or will not start.Dirty or faulty injection nozzles; Crankcase oil too heavy; Improper type of fuel; Water, dirt or air in fuel system; Clogged fuel filter; Engine overloaded; Intake air restriction; Clogged fuel filterConsult authorized diesel repair station; Use cold weather starting aids; Verify correct starting procedure; Use oil of proper viscosity; Drain, flush, fill, and bleed system; Replace filter element; Reduce load; Service air cleaner; Replace filter elements; Use proper fuel
Engine overloaded.Reduce load
Intake air restriction.Service air cleaner
Clogged fuel filter.Replace filter elements; Drain, flush, fill, and bleed system; Replace fuel filter element
Improper type of fuel.Use proper type of fuel for operating conditions; Use proper fuel
Overheated engine.See “Engine Overheats”
Low coolant temperature.Remove and check thermostat; Warm up engine to normal operating temperature
Engine knocks.See “Engine Overheats”
Defective thermostat.Remove and check thermostat; Check water temperature with thermometer and replace, if necessary
Engine runs irregularly or stalls frequently.Dirty or faulty injection nozzlesSee your authorized servicing dealer or engine distributor
Defective temperature gauge or sender.Check gauge, sender and connections
Engine emits white smoke.Engine out of timeSee your authorized servicing dealer or engine distributor
Engine out of time.See your authorized servicing dealer or engine distributor
Engine emits black or gray exhaust smoke.Turbocharger not functioningSee your authorized servicing dealer or engine distributor
Low coolant level.Fill radiator to proper level, check radiator and hoses for loose connections or leaks; Check thermostat
Faulty radiator cap.Have service company check
Stretched poly-vee belt or defective belt tension.Check automatic belt tensioners and check belts for stretching. Replace as required
Low engine oil level.Check oil level. Add as required
Cooling system needs flushing.Flush cooling system
Engine overheats.Incorrect grade of fuelUse correct grade of fuel
Clogged or dirty air cleaner.Service air cleaner
Improper valve clearance.See your authorized servicing dealer or engine distributor
Injection nozzles dirty.See your authorized servicing dealer or engine distributor
Defective turbocharger.See your authorized servicing dealer or engine distributor
High fuel consumption.Low engine temperatureCheck thermostat; Check water temperature with thermometer and replace, if necessary
Engine shuts down after approx. 15 seconds.Poor connection on oil or coolant temperature switchesCheck connections; Check controller DIP switches
Alternator doe not excite.Blown Fuse. Insufficient Voltage. No residual Voltage.Replace Fuse. Increase speed by 15%. For an instant apply on the + and – terminals of the electronic regulator a 12 V battery voltage with a 30 ? resistor in series respecting the polarities.
After being excited, alternator does not excite.Connections are interrupted. Low voltage at no load. Voltage potentiometer out of setting. Intervention of protection. Winding Failure.Check connection cables per drawings. Reset Voltage. Check RPM. Check Windings.
High voltage at no load.Voltage potentiometer out of setting. Failed regulator.Reset Voltage. Substitute regulator.
Lower than rated voltage at load.Voltage potentiometer out of setting. Intervention by protection. Failed regulator.Reset voltage potentiometer. Current too high, power factor lower than 0.8, speed lower than 4% of rated speed. Substitute regulator.
Higher than rated voltage.Voltage potentiometer out of setting. Failed regulator.Reset Voltage. Substitute regulator.
Unstable voltage.Speed variation in engine. Regulator out of setting.Check engine rotation. Regulate the stability of regulator by acting on “STABILITY” potentiometer.
Incorrect starting procedure.Verify correct starting procedure.
No fuel.Check fuel in tank and manual shut-off valve.
Exhaust restricted.Check and correct exhaust restriction.
Fuel filter plugged or full of water.Replace fuel filter or drain water from filter.
Injection pump not getting air or fuel.Check fuel flow at supply pump or bleed fuel system.
Engine cranks but will not start.Fau

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

Common problems

15
  • Unstable voltage.
    Cause: Winding failure.
    Fix: Check windings.
  • Stretched poly-vee belt or defective belt tension.
    Fix: Check automatic belt tensioners and check belts for stretching. Replace as required
  • Overheated engine.
    Fix: See “Engine Overheats”
  • No fuel.
    Fix: Check fuel in tank and manual shut-off valve.
  • Lower than rated voltage at load.
    Cause: Voltage potentiometer out of setting.
    Fix: Reset voltage.
  • Low engine oil level.
    Fix: Check oil level. Add as required
  • Low coolant temperature.
    Fix: Remove and check thermostat; Warm up engine to normal operating temperature
  • Low coolant level.
    Fix: Fill radiator to proper level, check radiator and hoses for loose connections or leaks; Check thermostat
  • Intake air restriction.
    Fix: Service air cleaner
  • Injection pump not getting air or fuel.
    Fix: Check fuel flow at supply pump or bleed fuel system.
  • Injection nozzles dirty.
    Fix: See your authorized servicing dealer or engine distributor
  • Incorrect starting procedure.
    Fix: Verify correct starting procedure.
  • Improper valve clearance.
    Fix: See your authorized servicing dealer or engine distributor
  • Improper type of fuel.
    Fix: Use proper type of fuel for operating conditions; Use proper fuel
  • Higher than rated voltage.
    Cause: Voltage potentiometer out of setting. Failed regulator.
    Fix: Reset Voltage. Substitute regulator.

Compiled from service & troubleshooting documentation across every generator set that uses the John Deere 6068TF250.

Maintenance schedule

ItemSpecCapacityPart #Interval
Fuel filter—500 hr find
Oil filterDZ118286500 hr PartsGeek
Belt—250 hr find
Coolant filter— find
Oil—500 hr

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

Parts cataloged across the John Deere 6068 family

175
Part #DescriptionCategory
G030077Air Cleaner Element (Engine) Primaryair_filter
G030078Air Cleaner Element (Engine) Secondaryair_filter
GM90735Air Cleanerair_filter
GM91358Element, Air Cleanerair_filter
GM92823Element, Air Cleaner Safetyair_filter
MQ-125-AIR-FILTERAir Filterair_filter
DZ114956ALTERNATORalternator
DZ117503ALTERNATOR (24V, 140A) (3127)alternator
DZ123153ALTERNATORalternator
RE505895ALTERNATORalternator
RE506196ALTERNATOR (12 V, 55 AMP)alternator
RE533516ALTERNATORalternator
RE533653ALTERNATORalternator
RE533654ALTERNATOR (12V, 120A)alternator
RE537146ALTERNATOR (28V, 50A) (3142)alternator
RE537508ALTERNATORalternator
RE550906ALTERNATORalternator
RE555751ALTERNATORalternator
RE558675ALTERNATORalternator
RE558676ALTERNATORalternator
RE558678ALTERNATORalternator
RM100224ALTERNATOR (REMAN FOR RE505895) (12V, 75A) (3135)alternator
SE501341(REMAN FOR AT161324, DZ114957) (3142)alternator
8972824026Battery Acid charge Pb-Ca maintenance free, 24V - 1100 CCAbattery
MQ-125-BATTERYBatterybattery
DZ114929FAN BELT (LGTH = 1655 mm)belt
DZ115455FAN BELT (LGTH = 1550 mm)belt
DZ115812FAN BELT (LGTH = 1680 mm)belt
DZ117267FAN BELT (LGTH = 1690 mm)belt
DZ117268FAN BELT (LGTH = 1530 mm)belt
DZ118556FAN BELTbelt
DZ118557FAN BELTbelt
DZ118558FAN BELTbelt
DZ118559FAN BELTbelt
DZ118560FAN BELT (LGTH = 1720 mm)belt
DZ118561FAN BELT (LGTH = 1750 mm)belt
DZ118764FAN BELT (LGTH = 1525 mm)belt
DZ118781FAN BELT (LGTH = 1700 mm)belt
DZ118786(LGTH=1715 mm) (24GL)belt
DZ118815FAN BELT (LGTH = 1725 mm)belt
DZ119018FAN BELTbelt
DZ119059FAN BELTbelt
DZ119060FAN BELT (LGTH = 1555 mm)belt
DZ119061FAN BELT (LGTH = 1540 mm)belt
DZ119062FAN BELTbelt
DZ119063FAN BELTbelt
DZ119416FAN BELTbelt
DZ119477FAN BELT (LGTH = 1565 mm)belt
DZ119478FAN BELT (LGTH = 1570 mm)belt
DZ119515FAN BELTbelt
DZ119516FAN BELTbelt
DZ119520FAN BELTbelt
DZ119521FAN BELTbelt
DZ119522FAN BELTbelt
DZ119530FAN BELT (LGTH = 1675 mm)belt
DZ119531FAN BELTbelt
DZ119533FAN BELTbelt
DZ119715FAN BELTbelt
DZ121128FAN BELT (LGTH = 1725 mm)belt
DZ121129FAN BELTbelt
DZ121133FAN BELTbelt
MQ-125-BELTV-Beltbelt
R134625FAN BELT (LGTH = 1645 mm)belt
T282795FAN BELTbelt
T428692FAN BELT (LGTH = 1665 mm)belt
T428724FAN BELT (LGTH = 1575 mm)belt
T428725FAN BELTbelt
T428818FAN BELTbelt
T428820FAN BELT (LGTH = 1580 mm)belt
T428822FAN BELTbelt
T428823FAN BELTbelt
T428825FAN BELTbelt
T428863FAN BELTbelt
VP64S17Pump Beltbelt
362140-SMain controller circuit boardcontroller_board
MOOOOO-20001QAuto START/STOP Engine Controller (ECU)ecm
RE520385Short Block Assembly (L-M-NL1066T, M99C2)engine
011134Engine exhaustengine_exhaust
5990101Power switching device (contactor)exerciser_switch
MQ-125-FUEL-FILTERFuel Filterfilter
MQ-125-OIL-FILTEROil Filterfilter
G122208Clarke Eng Fluid - 5 galfluid
G122209Clarke Eng Fluid -1 galfluid
MQ-125-COOLANTCoolantfluid
MQ-125-OILEngine Oilfluid
CO2775Element, Fuel Water Separatorfuel_filter
CO2776Element, Fuel Filter Primaryfuel_filter
DZ112918SECONDARY FUEL FILTERfuel_filter
DZ115392Secondary Fuel Filterfuel_filter
DZ128543FUEL FILTER (35HS) (35HT) (35HU) (35HV)fuel_filter
RE509031ENGINE SECONDARY FUEL FILTERfuel_filter
RE509208ENGINE PRIMARY FUEL FILTERfuel_filter
RE520906PRIMARY FUEL FILTERfuel_filter
RE541578CRANKSHAFT PULLEY AND DAMPER; OD = 190 mm (1343)fuel_filter
RE60021FINAL FUEL FILTERfuel_filter
RE62419FUEL FILTERfuel_filter
011135Generator boxgenerator_box
GM91647Hose, Humphose
C04521Element, Oil Filteroil_filter
DZ118286OIL FILTERoil_filter
RE504836OIL FILTERoil_filter
RE539279ENGINE OIL FILTERoil_filter
006429Owner’s Manual for Mobile Generatorother_service
054199LUG SLDLSS 600/250-1/0 X 1/4-28other_service
0F1732DECAL FUSES LOCATED INSIDEother_service
46606373other_service
9753300442Oil sample kitother_service
DCA-125USJBattery Connectionsother_service
DCA-150USJBattery Connectionsother_service
DZ100304(3401) (3402) (3404) (3405) (3406)other_service
DZ105100CRANKCASE VENT FILTERother_service
DZ105796OCV FILTERother_service
DZ110282SHORT BLOCK ASSEMBLYother_service
DZ110562Crankcase Vent System (USE WITH DZ113378 974G)other_service
DZ111004DEF TANK HEADER FILTER (25 Micron)other_service
DZ111166(3402) (3404) (3408) (3409) (974G)other_service
DZ114640DIESEL EXHAUST FLUID (DEF) DOSING UNIT FILTERother_service
DZ114695DEF TANK INLET SCREENother_service
DZ119883TORSIONAL DAMPERother_service
G122191250 hour Maintenance Kit (without fluids)other_service
G122196250 hour Maintenance Kit (& engine fluids)other_service
G122201500 hour Maintenance Kit (without fluids)other_service
G122206500 hour Maintenance Kit (& Engine fluids)other_service
M2870400404Parts List No.other_service
M2870400404Cother_service
M3870400104other_service
R113480FAN PULLEYother_service
R128658FAN PULLEYother_service
R128659FAN PULLEYother_service
R128660FAN PULLEYother_service
R128662FAN PULLEY (OD = 203 mm)other_service
R133295CRANKSHAFT PULLEY (OD = 169 mm)other_service
R133296CRANKSHAFT PULLEY & DAMPER (OD = 193 mm)other_service
R522890FAN PULLEYother_service
R545125CRANKSHAFT PULLEY (OD = 188 mm)other_service
RE500013CRANKSHAFT PULLEY & DAMPERother_service
RE505881(2’)other_service
RE505940(2’)other_service
RE505941(OD = 188 mm)other_service
RE57604TORSIONAL DAMPERother_service
RE59355CRANKSHAFT PULLEY & DAMPERother_service
SE501094CONNECTING ROD (REMAN FOR RE500608) (4838)other_service
SE501581CYLINDER HEAD (REMAN FOR RE57489) (5107)other_service
RE505939(1321)pulley
RE508578CRANKSHAFT PULLEYpulley
RE528428CRANKSHAFT PULLEY & DAMPER (OD = 264 mm) (1340)pulley
SE501236FUEL INJECTION PUMP (REMAN FOR RE518088) (16L8, 16L9)pump
SE501609(REMAN FOR RE546906) (4433) (4434) (4446) (4447)pump
SE501814OIL PUMP (REMAN FOR DZ100057) (5001)pump
MQ-125-SPARK-PLUGSpark Plugspark_plug
DZ110083STARTERstarter
DZ129200STARTERstarter
RE501150STARTERstarter
RE501166STARTERstarter
RE523501STARTER (3073)starter
RE523502STARTERstarter
RE540301STARTER (12V, 2.5KW) (3005)starter
RE540302STARTERstarter
RE546868STARTERstarter
RE549229STARTERstarter
RE549230STARTERstarter
RE551637STARTER (12 V)starter
RE551644STARTERstarter
RE552251STARTERstarter
RE564633STARTERstarter
RE64474STARTERstarter
RE65175STARTERstarter
RE65189STARTERstarter
RE70474STARTER (12V, 4.8KW)starter
RE70957STARTERstarter
RE70960STARTERstarter
RE70961STARTERstarter
SE501401STARTER (REMAN FOR RE540301) (12V, 2.5KW) (3005)starter
SE502632STARTERstarter
SE502333TURBOCHARGER (REMAN FOR RE509435) (65EC)turbocharger

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Aftermarket parts that fit this engine

60
RE66153 PartsGeek FridayParts $35.34 310G PartsGeek 310SE PartsGeek 444H PartsGeek 450G PartsGeek 455G PartsGeek 550G PartsGeek 555G PartsGeek 650G PartsGeek S200 PartsGeek RE508719 PartsGeek 200LC PartsGeek 230LC PartsGeek 270LC PartsGeek 200CLC PartsGeek 230CLC PartsGeek 270CLC PartsGeek 710G PartsGeek 700H PartsGeek 700J PartsGeek 653E PartsGeek AZ35440 PartsGeek FridayParts $15.00 4239D PartsGeek FridayParts $63.70 4239T PartsGeek FridayParts $63.70 605C PartsGeek 324H PartsGeek 344H PartsGeek RE502513 PartsGeek 4045D PartsGeek 4045T PartsGeek 4045H PartsGeek 6068H PartsGeek 6068T PartsGeek L512 PartsGeek L514 PartsGeek L524 PartsGeek L534 PartsGeek RE59298 PartsGeek RE560754 PartsGeek 180GLC PartsGeek 210G PartsGeek 250GLC PartsGeek RE22744 PartsGeek FridayParts $13.13 RE54064 PartsGeek FridayParts $13.13 5400N PartsGeek RE60021 eBay $45.00 PartsGeek $6.98 310E PartsGeek 344E PartsGeek 544C PartsGeek 644D PartsGeek 10PA17C PartsGeek RE52454 PartsGeek 310D PartsGeek 315D PartsGeek 410D PartsGeek 510D PartsGeek 544H PartsGeek 624H PartsGeek 644H PartsGeek 710D PartsGeek

Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.

Filters for this engine

  • Oil filter: John Deere DZ118286 Donaldson P551352 Wix 57243

Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.

Also used in

12
  • John Deere 200LC — Excavator
  • John Deere 360DC — Skid Steer Loader
  • John Deere 360DG — Skid Steer Loader
  • John Deere 460DG — Skidder
  • John Deere 540G II — Skidder
  • John Deere 540G III — Skidder
  • John Deere 548G — Skidder
  • John Deere 548G II — Skid Steer Loader
  • John Deere 640D — Skid Steer Loader
  • John Deere 648D — Skidder
  • John Deere 790E LC — Excavator
  • John Deere 9400 — Combine

Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.

Common questions

What is the oil capacity of the John Deere 6068TF250?

The John Deere 6068TF250 engine has an oil capacity of 17.3648938272 liters.

What is the displacement of the John Deere 6068TF250?

The John Deere 6068TF250 has a displacement of 0.0068 liters with 6 cylinders.

Which generators use the John Deere 6068TF250 engine?

The John Deere 6068TF250 powers 4 generator set(s), including Atlas Copco QAS 108, John Deere 6068TF250, MQ Power DCA-125SSJU, MQ Power DCA-125SSJU2.

What oil filter does the John Deere 6068TF250 use?

The John Deere 6068TF250 uses oil filter part numbers John Deere DZ118286, Donaldson P551352, Wix 57243.

How often should you change the oil in the John Deere 6068TF250?

The John Deere 6068TF250 oil change interval is every 500 hours.

What is a common problem with the John Deere 6068TF250 engine?

A commonly reported issue on generators using the John Deere 6068TF250 is: Unstable voltage.. Cause: Winding failure.. Fix: Check windings..