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John Deere 2720 Troubleshooting

John Deere 2720 Engine Troubleshooting

Engine difficult to start or will not start: Fuel filter element clogging. Clean or change the filter. Air in fuel tank. Bleed fuel tank. Clogged or burnt injection nozzle. Clean or replace injection nozzles. Fuel injection pump is not operating properly. Repair or install new pump.

Engine stops unexpectedly during operation: Timing of fuel injection pump is incorrect. Set it up as required. Fuel filter plugging. Clean or replace the filter. Engine is not preheated. Warm up to required temperature.

Diesel starts and stops: Fuel filter element is dirty. Clean the filter element. Fuel injection pump malfunction. Change or repair the pump. Dirty air filter. Clean or replace element.

Engine overheats: Dirty radiator fins or faulty radiator cap. Replace cap or clean radiator. Engine has a lack of coolant. Add coolant and check the components of cooling system. Damaged or worn fan belt. If necessary, replace the belt. Not enough engine oil. Fill up the engine oil.

Diesel power loss: Dirty or faulty injection nozzles. Test injection nozzles and change if necessary. Dirt in the fuel hoses or lines. Clean fuel system lines and hoses. Clogged air filter. Change air filter element. Leaking cylinder head gasket. Cylinder-head gasket replacement required.

Engine knocking or noise: Engine has not warmed up to the recommended temperature. Normalize the temperature by warming up the engine. Engine oil insufficient. Fill up the engine oil. Incorrect adjustment of fuel injection pump timing. Adjust fuel injection pump as required. Scored or worn pistons. Pistons need to be replaced. Connecting rod is worn or misaligned. Need to replace or align the connecting rod.

Engine stalls while idling: Incorrect low idle speed adjustment. Adjust as required. Improper valve clearance. Need to adjust valve clearance. Fuel injection pump malfunctioning. Install a new fuel pump or repair.

Oil pressure is insufficient: Low crankcase oil level. Check and refill the oil. Worn oil pump. Remove and inspect oil pump. Dirty oil filter. Clean or replace engine oil filter element.

John Deere 2720 Hydrostatic Transmission Troubleshooting

Hydrostatic transmission makes noise: Worn or out of adjustment speed control linkage. Replace or adjust linkage. Transmission overloaded. Load needs to be reduced. Transmission oil is contaminated or oil level is insufficient. Add oil to proper level or pour fresh transmission oil. Defective relief valve. Change the valve. Worn or defective parts of the hydrostatic transmission. After disassembly and inspection, replace defective components.

Hot transmission oil: Excessive transmission load. The load should be reduced. Defective or plugged cooling components. Inspect all cooling components and service or change if necessary. Transmission oil insufficient. Add oil to the transmission housing. Plugged transmission oil filter. Service or change transmission oil filter.

Loss of power: Transmission fluid insufficient. Fill the transmission housing to proper fluid level. Relief valve is stuck. Install a new valve. Speed control linkage is worn or unadjusted. Replace or adjust linkage.

Transmission oil leakage: Oil return tube is plugged. Clean or replace the tube. Damaged seals or gaskets. Install new components. High internal transmission housing pressure. Change defective components.

John Deere 2720 Hydraulic System Troubleshooting

Hydraulics overheating: Improper type of hydraulic fluid. The correct type of fluid must be used. Dirty hydraulic fluid. The fluid must be changed. Air in hydraulic lines. Bleed hydraulic lines. Main relief valve is faulty. Relief valve replacement required.

Insufficient hydraulic oil pressure: Insufficient hydraulic fluid. Add fluid as required. Clogged hydraulic fluid filter element. Clean or change hydraulic filter. Hydraulic piping is leaking. Identify leaks in the system and repair it. Hydraulic control valve block is out of adjustment. Control valve needs to be adjusted. Defective hydraulic pump. Replace or repair hydraulic fluid pump. Damaged hydraulic cylinder. Repair or change hydraulic cylinder.

3-point hitch cannot be raised or raising is too slowly: Hydraulic pump malfunction. Change or repair hydraulic oil pump. Faulty main relief valve. Replace relief valve. Hydraulic control valve block is defective. Repair or change the valve. Hydraulic cylinder failure. Repair or replace hydraulic cylinder. Low hydraulic fluid level. Add fluid as required. Hydraulic oil filter element is clogged. Service or replace the hydraulic filter. Excessive load on hitch. Reduce hitch load.

3-point hitch cannot be lowered or lowering is too slowly: Defective hydraulic cylinder. Replace or repair hydraulic cylinder. Hydraulic spool valve is not set properly. Set the spool valve properly. Lift arm shaft is worn. Install a new shaft. The hitch has not been adjusted. Need to make adjustments.

Hitch lower or lift is jerky: Dirty hydraulic oil. The oil must be changed. Defective hydraulic pump. Replace or repair hydraulic oil pump. Air in hydraulic lines. Bleed hydraulic lines. Faulty hydraulic spool valve. Repair or replace the valve. Damaged hydraulic cylinder. Change or repair hydraulic cylinder.

John Deere 2720 Steering System Troubleshooting

Steering wheel free play is excessive: Steering column shaft or coupling is worn out. Change defective component. Steering pump not working. Check the hydraulic steering pump and change if necessary. Loose or worn steering linkage parts. Inspect and change as required. Worn or damaged power steering control valve. Repair or replace the steering valve.

Steering is hard: Air lock in hydraulic steering system. Bleed air. Steering filter element is clogged. Steering filter need to be replaced. Steering fluid level is low. Check fluid level and add steering fluid as required. Worn or defective power steering control valve. Repair or replace the steering control valve. Steering pump not working. Install a new steering pump. Damaged or stuck steering pump control valve. Clean or install new control valve. Damaged or incorrectly assembled steering column. Replace steering column or assemble correctly. Front tires are worn unevenly. Install new tires. Not adjusted toe-in. Check and adjust toe-in. Leaking steering cylinder. Change worn piston seals or damaged piston rod.

Front wheels wander to left or right: Power steering control valve has damage or wear. Change or repair steering valve if required. Steering cylinder is worn. Change or repair steering cylinder. Not adjusted toe-in. Adjust toe-in wheels. Loose or worn steering linkage components. Inspect and change as required. Incorrectly adjusted or worn front wheel bearings. Replace the bearings or adjust it properly. Tire pressure is uneven. Adjust the tire pressure.

John Deere 2720 Electrical System Troubleshooting

Battery will not charge: Wiring connections are loose or corroded. Service or tighten cable connections. Defective electrical terminal connectors. Change terminal connectors. Battery dead cell. Replace the battery. Belt is damaged or loose. Replace belt or adjust belt tension.

Starter cranks slowly: Low battery output. Battery is drained, recharge it. Battery discharges quickly. Service charging system or replace battery. Disconnected battery cables or bad terminals. Connect wiring correctly or install new terminals.

Starter doesn't crank: Battery is discharged or worn. Change or recharge battery. Wiring is improperly connected or disconnected. Check wiring and connect properly. Low battery output. Recharge the battery. Starter motor failure. Starter should be changed.

JOHN DEERE TRACTORS ATTACHMENTS
1023E	2025R	2210	2520	3032E
3046R	3520	4066R	4105	4200
4320	4400	4520	4600	4720
430	420	455	X300	X350
X485	X500	X590	X700	X738

JOHN DEERE TRACTORS TROUBLESHOOTING
2640	3040	3310	3650	4100
5050D	5090R	5410	6105R	7200R
E130	L111	LA110	LT155	X300R