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John Deere 6120M Maintenance Data

John Deere 6120M Maintenance Intervals

Every Ten Hours or Daily Inspection

Check engine oil level. If the oil level is too low, add new oil.

Transmission/hydraulic oil level checking procedure. If the transmission/hydraulic fluid is too low, add it.

Check engine primary and secondary air filters. Change if required.

Check cab air filter elements. Replace as if necessary.

Check the coolant level in cooling system. If the coolant level is too low, add coolant in cooling system.

Check engine idle speed, steering unit, parking brake and service brakes. Repair any damage if necessary.

Oil And Filter Change

Every 250 hours

Replace engine oil. Recommended motor oil type - Plus-50, SAE 15W-40, 10W-30, 5W-30. API Service Category CK-4, CJ-4, CI-4. Oil system capacity: 16 L (4.2 gal). After adding engine oil, check the level with a dipstick.

Engine oil filter replacement. Engine oil filter part number: RE504836. When change the filter, cleaning the housing is recommended. When the filter is replaced, check the oil level. Add oil if necessary.

Every 500 hours

Change cab activated carbon kit. Part Number - AL158986.

Front PTO oil filter change. Part Number - DE30500.

Transmission oil filter changing. Transmission filter part number: AL221066. When Installation is complete, check the transmission/hydraulic oil level. Add oil if required.

Change filter in hydraulic line. Part number of hydraulic filter: AL169573. After Installing a new filter, check the transmission/hydraulic fluid level. If necessary, add it.

Replacing primary fuel filter elements. Fuel filter part number: RE560682.

Change secondary fuel filter. Fuel filter part number - RE551508. Check diesel fuel pump operation.

Every 1500 hours

Transmission/hydraulic fluid change. Recommended transmission/hydraulic fluid: Hy-Gard, JDM J20C, JDM J20D. Fluid capacity: 52 L (13.7 gal). Fill with the new transmission/hydraulic oil up to the upper notch on the dipstick.

Install a new cab recirculation air filter element. Part Number - L214634/L152026.

Change cab fresh air filter. Part Number - AL177184.

Change engine primary air filter. Part Number - AL215055.

Open crankcase ventilation filter change. OCV filter part Number - DZ105100.

Front axle oil change. Front axle oil: Hy-Gard, JDM J20C. Front axle housing capacity: 6.4 L (1.69 gal).

Yearly Maintenance

John Deere 6120M replacement parts

Engine Primary Air Filter. Part Number: AL215055
Engine Secondary Air Filter. Part Number: AL215054
Engine Oil Filter. Part Number: RE504836
Engine Primary Fuel Filter. Part Number: RE560682
Engine Secondary Fuel Filter. Part Number: RE551508
Transmission Oil Filter. Part Number: AL221066
Hydraulic Oil Filter. Part Number: AL169573
Cab Recirculation Air Filter. Part Number: L214634/L152026
Cab Fresh Air Filter. Part Number: AL177184
Cab Activated Carbon Kit. Part Number: AL158986
Open Crankcase Ventilation (OCV) Filter. Part Number: DZ105100
Diesel Exhaust Filter. Part Number: RE554498
Diesel Particulate Filter. Part Number: RE566731
Front PTO Oil Filter. Part Number: DE30500

Replace filter and engine oil. Service oil system components.

Change engine air cleaner elements.

Change transmission filter.

Replace hydraulic filter and add fresh fluid to hydraulic/transmission system.

Drain water from fuel tank and replace primary/secondary fuel filters.

Install a new cab fresh air filter.

Change cab recirculation air filter.

Replace cab activated carbon kit.

Change front PTO oil filter.

Clean oil cooler fins and radiator.

Drain, flush and refill engine cooling system. Cooling system capacity: 22 L (5.8 gal).

Inspect all hoses and clamps.

Check level of battery electrolyte.

Check engine valve clearance.

Check and adjust fuel pump.