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Gehl V330 Troubleshooting

The Gehl V330 skid steer loader is powered by 202.6 cu.in (3.32L) Yanmar 4TNV98T 4-cylinder vertical in-line direct injection turbocharged liquid-cooled diesel engine with a rated power of 70.7 hp (52.7 kW) at 2500 rpm. The Gehl V330 is equipped with a vertical-lift loader boom, two-speed hydrostatic transmission, 100H drive chains, and 14x17.5 standard tires. The hydraulic system has a pump with fluid flow rate of 21.8 gpm (82.3 lpm) or 36.3 gpm (137.4 lpm). The skid steer loader has a rated operating capacity of 3300 lbs (1497 kg) and tipping load of 6600 lbs (2995 kg). The lift height is 131.2" (3330 mm) to hinge pin, and dump height is 99" (2515 mm).

Engine Troubleshooting

Engine hard to start or doesn't start
Air in fuel system - Bleed fuel system.
Dirty fuel filter - Clean the filter or install new filter element.
Burnt or defective injection nozzle - Check and replace nozzles if required.
Water or dirt in fuel system - Drain, flush, and service the system.
Improper valve clearance - Adjust valve clearance.
Fuel injection pump malfunctioning - Install a new pump or rebuild.

Diesel starts but immediately stops
Air cleaner is dirty - Clean or replace air cleaner element.
Fuel filter element is clogged - Clean or replace the filter.
Fuel injection pump has loose connections - Tighten the connections.
Damaged or clogged injectors - Clean fuel injectors or change it.
Fuel injection pump damage - Rebuild or change fuel pump.

Engine shuts off suddenly during operation
Low coolant temperature - Warm up the engine.
Fuel filter plugging - Change filter element.
Air trapped in fuel system - Bleed air.
Faulty or dirty injection nozzles - Clean or change injection nozzles.
Fuel injection pump timing is wrong - Adjust according to specifications.

Engine stalls at idle
Incorrect low idle speed adjustment - Adjustment required.
Fuel injection pump failure - Install a new fuel pump or repair.
Fuel injector fault - Clean or replace fuel injectors.
Valve clearance is wrong - Check and adjust as required.

Loss of engine power
Dirty air cleaner - Install new air cleaner element.
Fuel injection nozzles are dirty or defective - Change fuel injection nozzles.
Incorrect fuel injection pressure - Test fuel injection pressure and adjust it correctly.
Incorrect valve clearance - Correct valve clearance.
Incorrect low idle setting - Correct low idle adjustment.
Dirty fuel hoses or lines - Fuel hoses and lines must be clean.
Cylinder head gasket is blown - Cylinder-head gasket replacement required.
Piston rings are worn or defective - Piston rings replacement required.

Engine overheating
Not enough coolant - The cooling system needs to be refilled and checked for faults.
Low engine oil level - Check and refill engine oil.
Dirty radiator fins or faulty radiator cap - Change cap or clean radiator.
Fan belt slipping or worn - Change the fan belt.
Engine overloaded - Reduce engine load.

Oil pressure is insufficient
Low crankcase oil level - Checking oil level and add if necessary.
Clogged oil filter element - Replace or clean engine oil filter element.
Wrong oil viscosity - Use proper viscosity oil.
Crankshaft bearing oil clearance is incorrect - Bearings need to be reinstalled.
Oil pump malfunction - Inspect and change as required.

Abnormal engine noise or knocking
Insufficient engine oil - Fill up the oil to required level.
Low coolant temperature - Engine is not warmed up to the required temperature.
Fuel injection pump timing is wrong - Adjust according to specifications.
Incorrect low idle setting - Adjust low idle speed.
Fuel injector fault - Replace or clean fuel injectors.
Connecting rod misalignment or failure - Align or replace connecting rod.
Worn or broken pistons - Pistons need to be replaced.

Drive System Troubleshooting

Machine will not move in either direction or one direction
Low hydraulic fluid level - Check and refill the hydraulic fluid.
Worn drive chain - Inspect drive chain and replace faulty parts.
Relief valver is broken - Repair or replace relief valve.
Clogged suction line or hydraulic filter - Check, clean, or change if necessary.
Faulty foot or hand controls - Replace or repair.
Drive motor or pump is defective - Check and repair if required.

Lack of power
Hydraulic oil filter is dirty - Change or clean hydraulic filter.
Faulty or opened relief valve - Close or change relief valve.
Worn or defective transmission parts - Inspect and replace defective parts.
Input drive shaft is stuck - Replace drive shaft.
Air in the hydraulic system - Need to bleed air.

Drive system overheating
Hydraulic oil is insufficient - Check and refill the hydraulic oil.
Dirty hydraulic fluid filter - Change or service hydraulic filter.
Relief valver is broken - Repair or change.
Drive pump or hydraulic motor is damaged - Repair or change faulty component.
Dirty oil cooler - Clean cooling fins as required.
Drive system overload - Load should be reduced.

Drive system makes excessive noise
Improper oil viscosity - Use proper oil viscosity.
Air leaks in hydraulic system - Need to bleed air.
Damaged drive pump or hydraulic motor - Repair or change faulty component.
Mechanical parts of drive system are defective or worn - Inspect the parts for worn or defect and repair as needed.

Hydraulics Troubleshooting

Hydraulic system overheats
Hydraulic pressure incorrectly adjusted - Correct adjustment is required.
Main relief valve malfunction or improper adjustment - Adjust or change relief valve.
Hydraulic oil is contaminated - Change hydraulic oil.
Hydraulic fluid level is low - Need to add fluid.
Hydraulic pump is faulty - Repair or replace pump if necessary.

Boom does not raise or lower
Faulty lift controls - Replace or repair.
Defective hydraulic pump - Install new pump or repair it.
Faulty hydraulic control valve - Replace or repair the valve.
Broken hydraulic cylinder - Replace or repair boom cylinder.
Insufficient hydraulic oil - Need to add oil.

Bucket fails to tilt
Bucket controls are faulty - Repair or change.
Hydraulic pump malfunction - Change or repair hydraulic pump if required.
Hydraulic control valve failure - Change or repair hydraulic valve.
Hydraulic bucket cylinder is defective - Repair or change cylinder.
Insufficient hydraulic fluid - Fill the system to proper hydraulic fluid level.

Slow bucket or lift arm operation
Hydraulic pump is worn - Check the pump performance and replace it if required.
Oil leaks from hydraulic cylinder - Replace cylinder piston seals.
Low hydraulic oil level - Need to add oil.
Defective or not adjusted hydraulic control valve - Set correctly or repair.
Hydraulic pressure loss - Adjust it correctly.

Bucket or boom is jerky
Hydraulic system is leaking air - Need to bleed air.
Hydraulic oil filter element clogging - Replace or clean the filter.
Hydraulic oil is contaminated - Change hydraulic oil.
Scratched cylinder rod or tube - Replace damaged component.

Excessive hydraulic pump noise
Hydraulic system leaking or not enough oil - Add hydraulic oil or correct system leaks.
Hydraulic filter is dirty - Change or clean oil filter.
Dirty suction line - Clean suction line as required.
Air trapped in hydraulic pump - Need to bleed air.
Pump components are worn out - Rebuild or replace hydraulic pump.

Electrical Troubleshooting

Battery does not charge
Loose or corroded electrical wiring connections - Tighten or service cable connections.
Battery terminal connectors are faulty - Replace terminal connectors.
Defective battery - Battery change required.
Loose or damaged belt - Replace belt or adjust belt tension.

Starter motor cranks slow
Low battery capacity - Charge the battery.
Battery won’t hold charge - Service or replace the battery.
Disconnected battery cables or bad terminals - Connect wiring properly or install new terminals.

Starter doesn't crank
Battery is low or faulty - Battery needs to be recharged or replaced.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Low battery output voltage - Battery is drained, charge it.
Starter motor is faulty - Change or repair starter.