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New Holland L330 Troubleshooting

The New Holland L330 skid steer loader is powered by 195.2 cu.in (3.2L) FPT F5C E5454 4-cylinder turbocharged liquid-cooled diesel engine with a rated power of 84 hp (63 kW) at 2500 rpm. The New Holland L330 is equipped with a vertical-lift loader boom, one-speed or two-speed hydrostatic transmission, ASA 100 drive chains, and 12x16.5 standard tires. The hydraulic system has a pump with fluid flow rate of 22.4 gpm (85 lpm) or 34.6 gpm (131 lpm). The skid steer loader has a rated operating capacity of 3000 lbs (1360 kg) and tipping load of 6000 lbs (2720 kg). The lift height is 131 inches (3330 mm) to hinge pin, and dump height is 104.7 inches (2660 mm).

Engine Troubleshooting

Engine starts hard or will not start
Air in fuel system - Bleed fuel system.
Fuel filter plugging - Service the filter.
Dirty or damaged injection nozzles - Clean or change injection nozzles.
Water in the fuel system - Change fuel and repair fuel system.
Incorrect valve clearance - Adjust valve clearance.
Fuel injection pump malfunctioning - Repair or install a new fuel pump.

Diesel starts but stalls suddenly
Air filter is plugged - Change or service air filter element.
Fuel filter element is dirty - Change the filter element.
Poor fuel injection pump tightness - Look for any leaks of fuel pump, tighten it fast.
Defective or clogged fuel injectors - Change or clean fuel injectors.
Fuel injection pump is defective - Replace or repair injection pump.

Engine shuts off suddenly during operation
Engine is not warmed up to the required temperature - Warm up to required temperature.
Fuel filter element clogging - Change filter element.
Air trapped in fuel system - Bleed air.
Fuel injection nozzles are clogged or faulty - Clean or change injection nozzles.
Improper fuel injection timing - Check the fuel injection pump timing adjustment.

Engine stalls at idle
Too low idle RPM - Correct low idle settings.
Fuel injection pump failure - Repair or install new pump.
Fuel injector fault - Clean or replace fuel injectors.
Improper valve clearance - Have it adjusted.

Engine lacks power
Plugged air filter - Service or replace the air filter.
Fuel injection nozzles are clogged or faulty - If necessary, replace with a new nozzle.
Insufficient fuel injection pressure - Adjust to correct pressure.
Valve out of adjustment - Adjust valve clearance.
Low idle speed set incorrectly - Correct the settings.
Fuel lines or hoses clogging - Clean fuel hoses and lines.
Cylinder-head gasket is leaking - Install new cylinder head gasket.
Piston rings are worn or damaged - Replace the piston rings as required.

Engine overheated
Engine coolant is insufficient - The cooling system needs to be refilled and checked for faults.
Low engine oil level - Check and refill engine oil.
Radiator fins are clogged or radiator cap is faulty - Clean radiator or install new cap.
Loose or defective fan belt - Belt change is required.
Engine is overloaded - Reduce engine load.

Low oil pressure
Lack of oil - Fill up the engine oil.
Engine oil filter is plugged - Change or clean engine oil filter element.
Incorrect engine oil Use correct viscosity oil.
Crankshaft bearing has excessive oil clearance - Bearings need to be reinstalled.
Oil pump failure - Install a new pump.

Engine noise or knocking
Engine oil insufficient - Need to add engine oil.
Engine is not warmed up to the required temperature - Warm up the engine.
Fuel injection pump timing is not adjusted - Set it up as required.
Low idle speed setting is not correct - Adjust low idling as recommended.
Clogged or defective injectors - Change or clean fuel injectors.
Misaligned or defective connecting rod - Need to align or replace the connecting rod.
Scored or worn pistons - Replace the pistons.

Drive System Troubleshooting

Drive system does not work in either direction
Hydraulic oil level is low - Checking hydraulic oil level and add if necessary.
Worn drive chain - Check drive chain and change defective components.
Worn or damaged relief valve - Change or repair defective relief valve.
Plugged hydraulic filter or suction line - Check, clean, or replace if required.
Hand or foot controls malfunction - Change or repair.
Drive motor or pump is worn - Inspect and replace as necessary.

Low power
Hydraulic oil filter is dirty - Change hydraulic filter.
Relief valve is damaged or open - Close or replace relief valve.
Transmission components are worn or defective - Inspect and replace defective parts.
Input drive shaft is damaged - Service or change faulty drive shaft.
Hydraulic system is leaking air - Need to bleed air.

Drive system overheating
Low hydraulic oil level - Fill the system to proper hydraulic oil level.
Plugged hydraulic fluid filter - Check, clean, or change as necessary.
Relief valve is stuck - Relief valve need to be replaced or repair.
Worn hydraulic motor or drive pump - Check and repair if required.
Clogged hydraulic oil cooler - Clean the cooling fins.
Drive system overload - Reduce the load.

Excessive noise
Oil viscosity is wrong - Drain and refill with correct oil.
Air in hydraulic system - Need to bleed air.
Hydraulic motor or drive pump is defective - Replace or repair faulty component.
Mechanical parts of drive system are worn or damaged - Inspect drive system and replace faulty components.

Hydraulics Troubleshooting

Hydraulic system overheating
Hydraulic pressure is not adjusted correctly - Adjust pressure as required.
Main relief valve malfunction or improper adjustment - Replace or set up the relief valve.
Contaminated hydraulic oil - Change hydraulic oil.
Hydraulic oil level is low - Fill up the hydraulic oil.
Defective hydraulic pump - Repair or install new hydraulic pump.

Boom fails to lift or drop
Lift controls are damaged - Replace or repair.
Hydraulic pump malfunction - Repair or install new hydraulic pump.
Defective hydraulic control valve - Repair or replace the valve.
Hydraulic cylinder failure - Change or repair lift cylinder.
Insufficient hydraulic fluid - Add fluid as required.

Bucket does not function
Defective bucket controls - Repair or replace.
Hydraulic pump not working - Change or repair hydraulic pump if required.
Hydraulic control valve failure - Repair or change hydraulic valve.
Bucket cylinder is faulty - Repair or change cylinder.
Hydraulic fluid level low - Fill up the hydraulic fluid.

Slow boom or bucket operation
Defective hydraulic pump - Test the pump flow rate and install new pump if required.
Hydraulic cylinder oil leakage - Install new cylinder seals.
Hydraulic oil is insufficient - Fill the system to proper hydraulic oil level.
Hydraulic control valve is unadjusted or worn - Adjust properly or repair.
Hydraulic pressure is low - Adjust pressure correctly.

Lift arm or bucket movements are jerky
Hydraulic system is leaking air - Bleed air from system.
Hydraulic oil filter is clogged - Service or change the hydraulic filter.
Contaminated hydraulic oil - Hydraulic oil change required.
Cylinder tube or rod scoring - Change worn component.

Hydraulic pump is excessively noisy
Hydraulic leaks or low oil level - Remedy hydraulic leakage or refill oil as necessary.
Hydraulic filter is dirty - Replace or clean the filter.
Suction line clogging - Need to service the suction line.
Pump is sucking air - Bleed air from hydraulics.
Pump parts are faulty - Replace or rebuild the pump.

Electrical Troubleshooting

Battery will not charge
Wiring connections are loose or corroded - Service or tighten cable connections.
Faulty battery terminal connectors - Change terminal connectors.
Battery dead cell - Change the battery.
Worn or loose belt - Adjust belt tension or change the belt.

Starter cranks slowly
Low battery output - Battery needs to be recharged.
Battery is not holding charge - Service battery or replace it.
Faulty battery terminals or disconnected cables - Check wire connections and change or service terminals.

Starter is not working
Battery is low or faulty - Recharge or change battery.
Battery cables are disconnected or improperly connected - Inspect cables and connect properly.
Battery capacity is low - Battery needs to be recharged.
Starter motor failing - Starter should be replaced.