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John Deere 2840 Troubleshooting

John Deere 2840 Diesel Engine Troubleshooting

Engine difficult to start or doesn't start: Fuel filter plugging. Install new filter element. There is air in the fuel system. Bleed the system. Dirty or faulty injection nozzles. Install a new kit of correctly balanced nozzles. Defective fuel injection pump. Repair or change injection pump.

Engine shuts off while running: Improper setting of fuel injection pump timing. Set up as recommended. Clogged fuel filter. Clean or change the filter. Engine is not preheated. Warm up engine as required.

Engine starts and then shuts off: Fuel filter plugging. Install new filter element. Fuel injection pump damage. Change pump or rebuild it. Dirty air cleaner. Carry out maintenance on air filter.

Engine overheating: Radiator core is dirty or radiator cap is damaged. Clean radiator or change cap. Insufficient coolant fluid. Add coolant fluid to cooling system and also check it for leaks. Excessive wear of the fan belt. Install new fan belt. Engine oil insufficient. Add oil to the engine crankcase.

Engine is not running at maximum power: Defective or clogged injection nozzle. Replace injection nozzles. Dirt in the fuel lines or hoses. Fuel lines and hoses need to be cleaned. Clogged air filter. Clean air cleaner element. Cylinder head gasket is damaged. Change cylinder head gasket.

Engine knocks or noises: Engine not warmed up. Engine is not warmed up to the required temperature. Lack of engine oil. Fill the crankcase with engine oil. Fuel injection pump timing is not adjusted. Adjust fuel injection pump as required. Pistons are broken or worn. Pistons replacement required. Connecting rod is worn or misaligned. Connecting rod needs to be replaced or aligned.

Engine stalls when idling: Low idle speed set incorrectly. Need to adjust idle speed. The valve clearance is not adjusted. Correct valve clearance needs to be set. Fuel injection pump is not working correctly. Rebuild or replace pump.

Oil pressure too low: Engine oil level low. Need to add oil. Oil pump is worn or damaged. Install a new pump. Engine oil filter is plugged. Clean or replace engine oil filter element.

John Deere 2840 Transmission Troubleshooting

Transmission is making noise: Damaged gears or incorrect backlash. Replace gears or adjust backlash correctly. Damaged or worn gear shift forks. Replace defective shift forks. Shaft splines are stuck or worn out. Change defective shaft. Lack of transmission oil supply. Add oil to the transmission housing. Worn or damaged bearings. Change faulty bearings. Transmission fluid contamination. Fill up with fresh transmission fluid.

Hard shifting: Gear shift linkage is corroded or worn. Change or lubricate shift linkage. Unadjusted or worn clutch. Adjust clutch or change if necessary. Worn or bent shift forks. Replace defective shift forks. Gearshift mechanism malfunction. Identify and replace failed parts.

Insufficient transmission fluid pressure: Insufficient transmission oil. Check and refill the transmission oil. Transmission fluid filter is clogged (if fitted). Service or replace the transmission fluid filter. Relief valve failure. Change the valve.

Transmission oil leakage: Worn seals or gaskets. Install new gaskets or seal. Transmission oil level is exceeded. Correct the oil volume.

John Deere 2840 Hydraulic System Troubleshooting

Hydraulic system overheats: Wrong hydraulic fluid type. Pour the proper type of fluid. Hydraulic oil is dirty. Hydraulic oil change required. Air in hydraulic system. Bleed air from hydraulic system. Defective main relief valve. Relief valve replacement required.

Hydraulic oil pressure too low: Hydraulic fluid level low. Checking hydraulic fluid level and add if necessary. Clogged hydraulic fluid filter. Service the hydraulic filter or change if required. Leaks in hydraulic pipes. Inspect the system for leaks and fix it. Hydraulic spool valve block is not adjusted properly. The spool valve should be properly adjusted. Hydraulic pump is defective. Change or repair hydraulic fluid pump. Hydraulic cylinder is faulty. Repair or replace hydraulic cylinder.

Hitch not raising or hitch raises slowly: Defective hydraulic pump. Install a new hydraulic fluid pump. Main relief valve failure. Change relief valve. Defective hydraulic spool valve. Install a new valve or repair it. Hydraulic cylinder is faulty. Repair or change hydraulic cylinder. Hydraulic oil is insufficient. Checking hydraulic oil level and add if necessary. Clogged hydraulic fluid filter. Clean the hydraulic filter element or replace if necessary. Excessive loading on the hitch. Reduce the load is required.

3-point hitch can't drop or drops too slowly: Hydraulic cylinder not working. Repair or change hydraulic cylinder. Incorrect setting hydraulic control valve block. Set correctly. Worn lift arm shaft. Change the shaft. Misadjusted hitch. The hitch must be adjusted.

Hitch lift or lower is jerky: Contaminated hydraulic fluid. Change hydraulic fluid. Hydraulic pump failure. Install a new hydraulic oil pump. Air in hydraulic lines. Bleed hydraulic lines. Damaged hydraulic spool valve. Install a new valve or repair it. Faulty hydraulic cylinder. Change or repair hydraulic cylinder.

John Deere 2840 Steering Troubleshooting

Excessive steering wheel play: Steering column shaft or coupling has maximum wear. Replace faulty component. Hydraulic steering pump is defective. Steering pump needs to be replaced or repaired. Steering linkage joints are worn or loose. Replace or repair steering linkage. Faulty or worn power steering valve assembly. Change or repair steering valve if required.

Stiff steering: Air trapped inside steering system. Bleed air. Clogged steering filter. Replace steering filter element. Insufficient steering oil. Need to add steering oil. Power steering valve assembly has damage or wear. Replace or repair steering valve as required. Steering pump is worn. Steering pump needs to be repaired or replaced. Steering pump control valve is faulty or stuck. Replace or service control valve. Damaged or incorrectly assembled steering column. Replace steering column or assemble correctly. Tire pressure uneven. Inflate the tires correctly. Not adjusted toe-in. Check and adjust toe-in. Steering cylinder is leaking. Change damaged piston rod or worn piston seals.

Front wheels wander to left or right: Power steering valve assembly has damage or wear. Repair or replace the steering valve. Worn steering cylinder. Repair or change steering cylinder. Improper toe-in. Adjust toe-in properly. Steering linkage parts are loose or worn. Replace or repair steering linkage. Front wheel bearings are damaged or incorrectly adjusted. Change or adjust bearings correctly. Uneven wear on front tyres. Replace the tyres.

John Deere 2840 Electrical Troubleshooting

Battery does not charge: Electrical cable connections are loose or corroded. Tighten or service cable connections. Battery terminal clamps are defective. Terminal clamps need to be replaced. Battery failing. Install a new battery. Loose or worn belt. Need to adjust belt tension or replace belt.

Starter turning slow: Low battery output. Battery is drained, recharge it. Battery is draining quickly. Battery needs to be serviced or replaced. Wires are disconnected or battery terminals are corroded. Check cable connections and change or clean terminals.

Starter motor won't turn: Battery is discharged or defective. Replace or charge as required. Wire harness is disconnected or incorrectly connected. Check wire harness and connect as required. Battery power is low. Battery is drained, charge it. Faulty starter motor. Repair or replace starter.

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