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New Holland 1925 Troubleshooting

New Holland 1925 Engine Troubleshooting

Engine starts hard or will not start: Fuel filter plugged. Change filter element. There is air in the fuel system. Bleed the system. Fuel injection nozzles are faulty or clogged. Test injection nozzles and change if necessary. Fuel injection pump is damaged. Replace injection pump or repair it.

Engine stalls after running: Fuel injection pump timing is wrong. Adjust the pump as required. Fuel filter plugging. Clean or change the filter. Low coolant temperature. Normalize the temperature by warming up the engine.

Engine starts but immediately stalls: Fuel filter element is dirty. Change the filter element. Fuel injection pump is damaged. Change pump or rebuild it. Air filter plugged. Clean or change.

Engine overheated: Clogged radiator fins or damaged radiator cap. Clean radiator or change cap. Engine has a lack of coolant. Add coolant fluid to cooling system and also check it for leaks. Excessive wear of the fan belt. Replace as required. Engine oil level is insufficient. Fill the crankcase with engine oil.

Reduced engine power: Dirty or faulty injection nozzles. If necessary, replace with a new nozzle. Dirt in the fuel hoses or lines. Service fuel lines and hoses. Dirty air filter element. Service air cleaner. Defective cylinder head gasket. Replace cylinder head gasket.

Abnormal engine noise or knocking: Engine not warmed up. Warm up the engine. Engine oil level is low. Check and refill engine oil. Fuel injection pump timing is not adjusted. Adjust the pump as required. Scored or worn pistons. Replace the pistons. Connecting rod is worn or not aligned. Connecting rod needs to be replaced or aligned.

Engine stalls at low idle speed: Wrong adjustment of low idle speed. Adjustment required. Valve clearance is out of adjustment. Have it adjusted. Fuel injection pump is not working correctly. Replace or repair injection pump.

Oil pressure too low: Low crankcase oil level. Add oil as required. Oil pump failure. Repair or replace. Oil filter is clogged. Change or service engine oil filter.

New Holland 1925 Transmission Troubleshooting

Excessive transmission noise: Improper backlash or worn gears. Adjust backlash properly or replace the gears. Shift forks are bent or worn out. Shift forks need to be replaced. Worn or damaged shaft splines. Change the shaft. Transmission fluid insufficient. Fill the transmission housing to proper fluid level. Bearings are broken or worn. Change the bearings. Transmission oil contamination. Fill up with fresh transmission oil.

Gears are hard to shift: Gear shift linkage is rusty or worn. Install a new gear shift linkage. Malfunction or incorrect clutch adjustment. Adjust clutch or replace if required. Shift forks are worn or bent. Shift forks need to be changed. Worn gear shifting mechanism. Repair or change worn components if necessary.

Transmission oil pressure is low: Low fluid level. Checking transmission fluid level and add if necessary. Dirty transmission oil filter element (if equipped). Service or replace the transmission oil filter. Relief valve is damaged. Change the valve.

External oil leaks: Worn seals or gaskets. Gaskets or seal need to be replaced. Too much fluid in transmission. Excess fluid must be drained.

Hydrostatic Transmission Troubleshooting

HST transmission makes noise: Speed control linkage is worn or unadjusted. Adjust or replace linkage. Transmission is under excessive load. Reduce the load is required. Contaminated transmission fluid or low fluid level. Top up to proper level or change transmission fluid. Relief valve is stuck. Install a new relief valve. Damaged or worn components of hydrostatic transmission. Change or repair defective parts.

Transmission oil overheated: Transmission overload. Reduce loading. Clogged or damaged cooling components. Inspect all cooling components and service or replace if necessary. Lack of transmission fluid. Checking transmission fluid level and add if necessary. Dirty transmission fluid filter element. Clean or change transmission fluid filter.

Power is too low: Transmission oil level is low. Check and refill the transmission oil. Stuck relief valve. Replace valve as required. Worn or out of adjustment speed control linkage. Adjust or change linkage.

Transmission fluid leakage: Plugged oil return tube. Clean or replace return tube. Broken seals or gaskets. Replace worn seal or gaskets. Transmission case internal pressure is too high. Repair or replace damaged components.

New Holland 1925 Hydraulics Troubleshooting

Excessive hydraulic system heat: Improper hydraulic oil type. The proper type of hydraulic oil must be used. Contaminated hydraulic fluid. Change hydraulic fluid. There is air in the hydraulic system. Bleed hydraulic system. Main relief valve failure. Relief valve must be changed.

Hydraulic oil pressure too low: Insufficient hydraulic oil. Check and refill the hydraulic oil. Dirty hydraulic fluid filter element. Clean the hydraulic filter element or replace if necessary. Leaks in hydraulic lines. Find leaks in the system and fix it. Not adjusted hydraulic control valve. Need to adjust. Hydraulic pump is defective. Change or repair hydraulic fluid pump. Hydraulic cylinder is faulty. Repair or install a new hydraulic cylinder.

3-point hitch can't lift or lifts too slowly: Damaged hydraulic pump. Install a new hydraulic oil pump. Main relief valve malfunction. Install a new relief valve. Hydraulic spool valve is faulty. Repair or replace hydraulic valve. Defective hydraulic cylinder. Change or repair hydraulic cylinder. Hydraulic fluid is insufficient. Fill the system to proper hydraulic fluid level. Hydraulic oil filter is clogged. Change the hydraulic filter element or service if required. Hitch is under excessive load. Load needs to be reduced.

Three-point hitch cannot be dropped or dropping is too slow: Hydraulic cylinder is defective. Repair or install a new hydraulic cylinder. Hydraulic spool valve is not set properly. Set the spool valve properly. Worn hitch cross shaft. Replace the shaft. The hitch is not adjusted. Adjust as required.

Hitch drop or lift is jerky: Dirty hydraulic oil. The oil must be changed. Faulty hydraulic pump. Repair or replace hydraulic fluid pump. Air trapped in hydraulic system. Bleed air from system. Hydraulic control valve block is damaged. Repair or replace hydraulic valve. Hydraulic cylinder is broken. Replace or repair hydraulic cylinder.

New Holland 1925 Steering Troubleshooting

Steering wheel has too much free-play: Steering column shaft or coupling is worn out. Replace faulty part. Steering pump failure. Repair or replace steering pump. Worn or loose steering linkage joints. Change or repair steering linkage. Faulty or worn hydrostatic steering unit. Inspect and change as required.

Difficult steering: Air trapped inside steering system. Bleed the system of air. Steering filter clogging. Clean or change it. Insufficient steering oil. Need to add steering oil. Worn or defective hydrostatic steering unit. Inspect and replace as required. Damaged hydraulic steering pump. Install a new hydraulic steering pump. Steering pump control valve is stuck or worn. Install a new flow control valve or clean it. Incorrectly assembled or damaged steering column. Reassemble the steering column correctly or change it. Front tires are worn unevenly. Install new tires. Improper toe-in. Adjust toe-in properly. Steering cylinder leakage. Change worn piston rod or damaged cylinder seals.

Tractor pulls to left or right: Hydrostatic steering unit has wear or malfunction. Repair or replace the steering unit. Steering cylinder is faulty. Replace or repair hydraulic steering cylinder. Not adjusted toe-in. Check and adjust toe-in. Worn or loose steering linkage joints. Repair or replace steering linkage. Worn or incorrectly adjusted or worn front wheel bearings. Replace the bearings or adjust it properly. Tires have uneven wear. Replace the tires.

New Holland 1925 Electrical System Troubleshooting

Battery does not charge: Loose or corroded electrical wiring connections. Service or tighten cable connections. Defective battery terminal clamps. Install new terminal clamps. Dead cell in battery. Change the battery. Loose or defective belt. Install a new belt or adjust belt tension.

Starter cranks slowly: Battery voltage is low. Battery needs to be recharged. Battery runs out quickly. Service charging system or change battery. Battery terminals are corroded or wires are disconnected. Check wire connections and change or service terminals.

Starter is not working: Battery is drained or worn. Charge or replace the battery. Battery wiring is disconnected or improperly connected. Inspect wiring and connect as required. Low battery voltage. Battery is drained, charge it. Starter motor failing. Repair or replace starter.