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John Deere 2955 Troubleshooting

The John Deere 2955 is a 2-wheel drive or 4-wheel drive utility tractor from 55 Utility series. This model was manufactured between 1987 and 1992. The John Deere 2955 tractor is powered by John Deere CD6359D four-cycle six-cylinder direct injection naturally aspirated liquid cooled diesel engine.

A 359 cubic inches (5.9 L) engine has a cylinder bore of 4.19" (106 mm), piston stroke of 4.33" (110 mm), and rated power of 97 hp (72.3 kW). The John Deere 2955 was fitted with two transmission options: top-shaft synchronized transmission with 8 forward and 4 reverse gears, or top-shaft synchronized partial powershift transmission with 16 forward and 8 reverse gears. Max travel speed (forward/reverse): 18.5 mph (29.8 km/h) and 8 mph (12.9 km/h). The closed center hydraulic system includes a piston pump with a flow of 21 gal/min (79.8 l/min).

The John Deere 2955 was equipped with a power steering system, differential hydraulic wet disc brakes, 10.0x16 (2WD) or 13.6x28 (4WD) front tires, and 16.9x38 (2WD) or 18.4x38 (4WD) rear tires. The wheel base is 101.7" (2580 mm). The tractor is compatible with a John Deere 265 front-end loader with lift capacity to full height of 3920 lbs (1778 kg) and breakout force of 5730 lbs (2599 kg).

Engine Troubleshooting
Diesel will not start or hard to start
Clogged fuel filter element - Replace filter element
Fuel is not supplied from the tank to the system - Check the fuel shut-off valve
Air in fuel lines - Bleed fuel lines
Dirty or damaged injectors - Inspect fuel injectors and replace if necessary
Damaged fuel injection pump - Install a new fuel pump or repair
Poor engine compression - Inspect cylinder block and change defective components
Engine stops during operation
Engine is not warmed up to the required temperature - Warm up to required temperature
Water, dirt, or air in fuel system - Drain, flush, fill, and bleed system
Bad fuel injection - Check and adjust
Fuel filter plugging - Replace filter element
Clogged fuel injectors - Clean or replace fuel injectors
Engine starts but immediately stops
Fuel injection pump out of timing - Check and correct adjustments
Fuel filter is dirty - Clean the filter element
Fuel injector nozzles are damaged - Service or replace injector nozzles
Defective fuel injection pump - Repair or replace injection pump
Clogged air cleaner element - Replace or service air cleaner element
Engine stalls at low idle speed
Incorrect low idle speed adjustment - Adjust the low idle speed
Fuel injection pump is not operating properly - Rebuild or install a new injection pump
Fuel injector nozzles are defective or dirty - Inspect injector nozzles and change if required
The valve clearance is incorrect - Correct valve clearance needs to be set
Engine overheated
Lack of coolant in cooling system - Fill the cooling system. Repair any leaks if necessary
Cooling system is dirty or cooling components are failed - Flush cooling system or replace faulty parts
Not enough engine oil - Add oil to the engine crankcase
Fan belt tension is unadjusted or belt is damaged - Replace or adjust belt tension properly
Thermostat failure - Thermostat needs to be replaced
Engine loses power
Faulty or dirty injectors - Change fuel injectors
Improper fuel injection pressure - Adjust to proper pressure
Air filter is dirty - Change or replace air filter element
Oil filter element clogged - Clean or change engine oil filter
Diesel engine overloaded - Reduce engine load
The valve clearance is incorrect - Adjust valve clearance
Low idle speed setting is not correct - Adjust the low idle speed
Clogged fuel hoses or pipes - Service fuel hoses and pipes
Poor engine compression: Leaking or broken valves - Replace the valves
Abnormal engine noise or knocking
Timing of fuel injection pump is wrong - Check and correct settings
Fuel injector nozzles fault - Service or replace injector nozzles
Engine oil level low - Check oil level and add oil as required
Engine is cold - Warm up to required temperature
Crankshaft or main bearings failure - Worn parts replacement required
Broken or worn piston rings - Install new piston rings
The flywheel to crankshaft bolts are loose - Tighten bolts as required
Engine using too much oil
External oil leaks: Gaskets or seals can be faulty - Replace worn parts to avoid leaks
Crankcase oil too light - Use oil of proper viscosity
Piston rings are seized or worn - Install new piston rings
Valve guides and stems are worn - Valves need to be changed
Cylinder liners or pistons are scuffed - Inspect liners and pistons, change as necessary

Electrical System Troubleshooting
Battery does not charge
Battery failing - Battery replacement required
Battery wiring harness failure - Inspect electrical cables for defects, repair or replace
Corroded or loose battery terminals and cables - Service or tighten battery cables and terminals
Belt damage or incorrect belt tension adjustment - Change belt or properly adjust belt tension
Starter turns slowly
Battery capacity is low - Battery is drained, charge it
Battery is draining quickly - Service charging system or change battery
Bad battery cable harness - Inspect cables for malfunctions, repair or change
Battery terminals and cables are corroded or loose - Tighten or service cables and terminals
Starter does not work
Low battery capacity - Battery is drained, charge it
Discharged or defective battery - Recharge or replace battery
Faulty starter motor - Starter should be replaced
Wiring is improperly connected or disconnected - Need to reconnect the wiring properly

Transmission Troubleshooting
Gear hard to shift
Failure or improper clutch adjustment - Adjust clutch or replace if required
Loose or broken gear shift linkage - Replace or repair the shift linkage
Shift forks are damaged or worn - Replace the shift forks
Faulty gear shifting mechanism - Faulty parts must be changed
Insufficient transmission fluid pressure
Lack of transmission fluid supply - Check and refill the transmission fluid
Transmission fluid filter is plugged (if fitted) - Replace or clean transmission fluid filter
Relief valve sticking - Change relief valve
Transmission makes excessive noise
Damaged or worn bearings - Replace the bearings
Low transmission oil level - Checking transmission oil level and add if necessary
Transmission fluid contamination - Fill up with fresh transmission fluid
Gears are worn or backlash is improper - Set backlash properly or change the gears
Worn or damaged shift forks - Change the shift forks
Transmission oil leakage
Gaskets or seals are damaged - Install new seal or gaskets
Cracked transmission housing - Housing needs to be replaced

Hydraulics Troubleshooting
Hydraulic system overheating
Incorrect hydraulic pressure adjustments - Adjust correctly
Main relief valve is faulty or misadjusted - Adjust or replace the relief valve
Hydraulic oil is dirty - Hydraulic oil change required
Air in hydraulic system - Check the pump seals, suction line, and fittings
Hydraulic oil pressure too low
Hydraulic fluid level is insufficient - Check and refill the hydraulic fluid
Hydraulic oil filter element clogging - Clean the hydraulic filter element or replace if necessary
Defective hydraulic pump - Test the pump flow rate and install new pump if required
Hydraulic control valve is not set properly or defective - Set properly or replace
Hydraulic cylinder is not working - Inspect cylinder parts for wear or damage and replace if required
Hydraulic pipes are leaking - Detect leaks in the system and fix it
3-point hitch lifts too slowly or can't lift
Lack of hydraulic fluid - Add fluid to the hydraulic system
Cold fluid in hydraulic system - Wait for fluid to warm up
Dirty hydraulic oil filter - Clean or change hydraulic filter
Hydraulic pump is faulty - Check pump flow and change pump if necessary
Misadjusted or defective main relief valve - Adjust relief valve or change if required
Hydraulic spool valve block is not set properly or defective - Replace or adjust properly
Hydraulic cylinder malfunction - Inspect cylinder components for wear or damage and change if required
Damaged or loose hydraulic suction line - Tighten or change it
3-point hitch lowers slowly or won't lower
Hydraulic control valve is defective or set improper - Set correctly or replace
Broken hydraulic cylinder - Check cylinder components for wear or damage and change if necessary
Lift arm shaft is worn - Replace the shaft
Defective mechanical parts of the hitch - Change damaged or worn hitch components
Jerky lifting or lowering of 3-point hitch
Air leaks in hydraulic system - Inspect the pump seals, suction line, and fittings
Hydraulic oil contamination - Change the oil
Hydraulic pump failure - Check hydraulic pump flow and replace pump if necessary
Defective or not adjusted hydraulic spool valve - Replace or set properly
Faulty hydraulic cylinder - Check cylinder parts for wear or damage and replace if necessary

Steering System Troubleshooting
Excessive effort to steer
Defective or improperly assembled steering column - Reassemble properly or change steering column
Aeration in steering system - Bleed the system of air
Steering filter element is clogged - Replace steering filter element
Toe-in adjustment is incorrect - Check toe-in and correct
Incorrect tire pressure - Inflate the tires correctly
Steering pump malfunction - Check the hydraulic steering pump and change if necessary
Faulty or worn hydrostatic steering unit - Check and replace as required
Stuck or faulty relief valve - Inspect relief valve and replace if necessary
Low steering oil level - Fill up the steering oil
Oil leaks in the steering system - Retighten the connections of the hydraulic steering lines and hoses
Steering wheel has too much free-play
Worn steering column coupling or shaft - Change faulty part
Hydrostatic steering unit has wear or malfunction - Change or repair steering unit if required
Steering pump stopped working - Steering pump needs to be replaced or repaired
Worn or faulty steering linkage or tie-rod ends - Replace failed component
Tractor pulls to right or left
Tire pressure is low - Tires need to be inflated
Not adjusted toe-in - Adjust toe-in correctly
Faulty or worn steering linkage or tie-rod ends - Change damaged part
Worn or defective hydrostatic steering unit - Change or repair steering unit if required
Steering cylinder is faulty - Change or repair steering cylinder
Front hub bearings are incorrectly adjusted or worn - Replace the bearings or adjust it properly




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