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New Holland TC40 Troubleshooting

New Holland TC40 Engine Troubleshooting

Diesel engine hard to start or doesn't start: Fuel filter plugging. Clean or change the filter. Air in fuel tank. Bleed fuel tank. Fuel injection nozzles are damaged. Check injection nozzles and replace if required. Fuel injection pump damage. Repair or replace injection pump.

Engine shuts off while running: Improper fuel injection timing. Set up as recommended. Dirty fuel filter. Service the filter. Engine has not warmed up to the recommended temperature. Engine is not warmed up to the required temperature.

Engine starts and stalls suddenly: Clogged fuel filter. Clean the filter element. Fuel injection pump is faulty. Change pump or rebuild it. Clogged air filter element. Clean or replace the element.

Engine overheating: Radiator fins are dirty or radiator cap is defective. Clean radiator or install new cap. Coolant level is low. Refill to the correct level and inspect system for leaks. Fan belt is broken or worn. Install new fan belt. Not enough engine oil. Add oil to the engine crankcase.

Diesel power loss: Fuel injection nozzles are faulty or clogged. Change fuel injection nozzles. Dirty fuel hoses or lines. Clean fuel system hoses and lines. Clogged air cleaner. Clean air cleaner element. Worn cylinder head gasket. Cylinder-head gasket replacement required.

Abnormal engine noise or knocking: Engine is not fully warmed up. Engine is not warmed up to the required temperature. Low engine oil level. Add oil to the engine crankcase. Timing of fuel injection pump is incorrect. Check the fuel injection pump timing adjustment. Pistons are worn or scored. Replace the pistons. Connecting rod is not aligned or worn. Need to change or align the connecting rod.

Engine stops at idle: Incorrect low idle setting. Need to adjust idle speed. Excessive valve clearance. Adjust valve clearance. Fuel injection pump is defective. Repair or install a new fuel pump.

Insufficient oil pressure: Engine oil insufficient. Checking oil level and add if necessary. Oil pump malfunction. Check and replace if necessary. Oil filter element clogging. Service or replace engine oil filter.

New Holland TC40 Transmission Troubleshooting

Transmission is making noise: Defective gears or improper backlash. Install new gears and adjust backlash properly. Worn or bent shift forks. Replace defective shift forks. Stuck or worn shaft splines. Replace the shaft. Lack of transmission fluid. Checking transmission fluid level and add if necessary. Bearings are cracked or worn. Change faulty bearings. Transmission fluid is dirty. Change the fluid.

Gear shift is hard: Rusty or worn gear shift linkage. Install new shift linkage. Clutch is out of adjustment or defective. Adjust clutch or replace if required. Worn or bent shift forks. Replace defective shift forks. Gearshift mechanism is damaged. Replace or repair the mechanism.

Insufficient transmission oil pressure: Lack of transmission oil supply. Check and refill the transmission oil. Dirty transmission fluid filter (if fitted). Clean or change transmission fluid filter. Relief valve is damaged. Change relief valve.

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

Hydrostatic Transmission Troubleshooting

Excessive hydrostatic transmission noise: Speed control linkage is worn or unadjusted. Replace or adjust linkage. Excessive transmission load. Reduce transmission load. Fluid is contaminated or fluid level is insufficient. Pour fresh fluid or add transmission fluid to proper level. Stuck relief valve. Replace valve as required. Worn or defective transmission components. Replace or repair defective components.

Transmission oil overheated: Excessive transmission load. Reduce loading. Defective or plugged cooling components. Inspect all cooling components and service or change if necessary. Insufficient transmission fluid. Fill the transmission housing to proper fluid level. Transmission oil filter element clogging. Service or replace the transmission oil filter.

Power is too low: Low fluid level. Add fluid to the transmission housing. Stuck relief valve. Install a new valve. Defective or not adjusted speed control pedal linkage. Replace or adjust linkage.

External oil leaks: Clogged transmission fluid return pipe. Clean or change return pipe. Damaged gaskets or seals. Install new gaskets or seal. High internal transmission case pressure. Change defective parts.

New Holland TC40 Hydraulic System Troubleshooting

Hydraulic system overheating: Wrong hydraulic oil type. Fill up with the correct type of oil. Hydraulic oil is dirty. Hydraulic oil change required. Air in hydraulic pipes. Bleed hydraulic pipes. Main relief valve is faulty. Replace relief valve.

Low hydraulic oil pressure: Insufficient hydraulic oil. Need to add oil. Clogged hydraulic oil filter element. Install a new hydraulic filter element. Hydraulic piping is leaking. Check the hydraulic system and fix leaks. Not adjusted hydraulic control valve. Need to adjust. Hydraulic pump malfunction. Repair or replace hydraulic fluid pump. Hydraulic cylinder is broken. Repair or replace hydraulic cylinder.

3-point hitch cannot be raised or raising is too slowly: Hydraulic pump not working. Replace or repair hydraulic oil pump. Main relief valve is faulty. Install a new relief valve. Defective hydraulic control valve. Change or repair hydraulic valve. Faulty hydraulic cylinder. Repair or replace hydraulic cylinder. Low hydraulic oil level. Check and refill the hydraulic oil. Clogged hydraulic oil filter element. Clean the hydraulic filter element or replace if necessary. Heavy load on the hitch. Reduce loading.

Hitch fails to drop or drops slowly: Hydraulic cylinder not working. Replace or repair hydraulic cylinder. Hydraulic spool valve is out of adjustment. Spool valve adjustment required. Lift arm shaft is worn. Install a new shaft. Three-point hitch is out of adjustment. Adjust the hitch.

Hitch lift or lower is jerky: Hydraulic oil contamination. Change the oil. Hydraulic pump is faulty. Install a new hydraulic fluid pump. There is air in the hydraulic system. Bleed hydraulic system. Hydraulic control valve is faulty. Change or repair hydraulic valve. Hydraulic cylinder is faulty. Change or repair hydraulic cylinder.

New Holland TC40 Steering Troubleshooting

Excessive play in steering: Worn steering column coupling or shaft. Replace faulty component. Damaged hydraulic steering pump. Steering pump needs to be replaced or repaired. Steering linkage joints are worn or loose. Repair or change steering linkage. Steering control unit has malfunction or wear. Repair or replace the steering unit.

Steering is stiff: Air in steering system. Air-bleed steering system. Clogged steering filter element. Service or replace the steering filter. Insufficient steering fluid. Fill up the steering fluid. Steering control unit has malfunction or wear. Repair or replace the steering unit. Worn steering pump. Repair or replace steering pump. Pump flow control valve is damaged or stuck. Replace or service control valve. Improperly mounted or worn steering column. Mount the steering column as required or change it. Tire pressure uneven. Inflate the tires correctly. Incorrect toe-in. Adjust toe-in wheels. Steering cylinder leakage. Change worn piston rod or damaged cylinder seals.

Tractor is pulling to right or left: Steering control unit has malfunction or wear. Change or repair steering unit if required. Steering cylinder is defective. Replace or repair hydraulic steering cylinder. Not adjusted toe-in. Adjust toe-in properly. Steering linkage parts are loose or worn. Repair or replace steering linkage. Defective or improperly adjusted front wheel bearings. Change or adjust the bearings properly. Tire pressure uneven. Inflate the tires correctly.

New Holland TC40 Electrical System Troubleshooting

Battery does not charge: Corroded or loose cable connections. Tighten or service connections. Defective battery terminal clamps. Install new terminal clamps. Dead cell in battery. Install a new battery. Loose or damaged belt. Adjust belt tension or install a new belt.

Starter turns slow: Battery capacity is low. Battery is drained, charge it. Battery discharges quickly. Service or replace the battery. Faulty battery terminals or disconnected cables. Check wiring connections and replace or clean terminals.

Starter doesn't crank: Battery is low or faulty. Recharge or replace battery. Battery cables are disconnected or improperly connected. Inspect cables and connect properly. Battery power is low. Low battery charging, charge as required. Starter motor is defective. Repair or change starter.