________________________________________________________________________________________
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 |
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 |
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 |
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 |
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 |
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 |
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Farm Tractors Technical Specifications |