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New Holland L220 Troubleshooting

The New Holland L220 skid steer loader driveline system components: a 133.8 cu.in (2.2L) Shibaura N844LT 4-cylinder turbocharged diesel engine with a rated power of 57 hp (42 kW), and one-speed or two-speed hydro transmission. The hydraulic system has a pump with a rated capacity of 19 gal/min (72 l/min) or 28.8 gal/min (109 l/min). The New Holland L220 is equipped with a vertical-lift loader boom, ASA 80 drive chains, and 10x16.5 standard tires. The skid steer has a maximum lift height of 121" (3075 mm) to hinge pin and dump height of 94.5" (2400 mm). The rated operating capacity is 2000 lbs (905 kg), and tipping load is 4000 lbs (1815 kg).

Engine Troubleshooting

Engine starts hard or doesn't start
Air in the fuel pipes - Bleed the fuel pipes.
Clogged fuel filter - Service or replace the filter.
Fuel injection nozzles are damaged - Clean or replace injection nozzles.
Water or dirt in fuel system - Drain, flush, and service the system.
Excessive valve clearance - Check and adjust.
Fuel injection pump failure - Replacement or repair required.

Diesel starts and then shuts off
Plugged air filter - Clean or change filter.
Dirty fuel filter - Service or replace the filter.
Fuel injection pump has loose connections - Tighten the connections.
Defective or clogged fuel injectors - Replace or clean fuel injectors.
Fuel injection pump is not operating properly - Rebuild or install a new injection pump.

Engine stalls after running
Engine has not warmed up to the recommended temperature - Warm up to required temperature.
Clogged fuel filter - Clean or change the filter.
There is air in the fuel system - Bleed the system.
Fuel injection nozzles are dirty or defective - Inspect nozzles and replace if necessary.
Fuel injection pump timing is not adjusted - Adjust according to specifications.

Engine stalls when idling
Low idle speed setting is not correct - Correct the settings.
Fuel injection pump is broken - Repair or install a new fuel pump.
Fuel injector fault - Change or clean fuel injectors.
Excessive valve clearance - Check and adjust as required.

Lack of engine power
Plugged air filter - Install new air filter element.
Faulty or dirty injection nozzles - Service or change injection nozzles.
Fuel injection pressure is wrong - Test fuel injection pressure and adjust it correctly.
Valve clearance is not correct - Check and adjust as required.
Incorrect low idle speed adjustment - Correct the settings.
Fuel lines or hoses are dirty - Fuel lines and hoses need to be cleaned.
Worn cylinder head gasket - Replace cylinder head gasket.
Worn or damaged piston rings - Replace piston rings.

Engine is overheated
Insufficient coolant fluid - Add coolant and check the components of cooling system.
Insufficient engine oil - Check and refill engine oil.
Clogged radiator core or leaking radiator cap - Replace cap or clean radiator.
Loose or damaged fan belt - Belt replacement is recommended.
Engine is overloaded - Reduce load on the engine.

Low oil pressure
Insufficient engine oil - Fill crankcase to proper oil level.
Plugged engine oil filter - Clean or replace engine oil filter element.
Oil grade or viscosity is wrong - Use proper viscosity oil.
Incorrect oil clearance in crankshaft bearing - Bearings need to be reinstalled.
Oil pump is defective - Replace as required.

Abnormal engine knocking or noise
Insufficient engine oil - Fill up the oil to required level.
Engine is not preheated - Warm up engine as required.
Improper fuel injection timing - Set the fuel pump timing correctly.
Incorrectly set low idle speed - Adjust as required.
Defective fuel injectors - Replace fuel injectors.
Connecting rod is not aligned or worn - Alignment procedure or replacement is required.
Pistons are worn or broken - Replace the pistons.

Drive System Troubleshooting

Drive system doesn't operate in one direction or either direction
Low hydraulic oil level - Check and refill the hydraulic oil.
Faulty drive chain - Check drive chain and change faulty parts.
Worn or defective relief valve - Relief valve need to be replaced or repair.
Clogged hydraulic filter or suction line - Service suction line or change hydraulic filter.
Faulty foot or hand controls - Replace or repair.
Drive motor or pump is defective - Check and repair if required.

Low power
Clogged hydraulic oil filter - Change or clean hydraulic filter.
Relief valve is damaged or open - Change or close relief valve.
Transmission parts are damaged or faulty - Inspect and change defective parts.
Input drive shaft is worn - Repair or replace faulty drive shaft.
Air leaks in hydraulic system - Bleed air from system.

Drive system overheating
Hydraulic fluid is insufficient - Fill up the hydraulic fluid.
Hydraulic fluid filter is dirty - Replace or service hydraulic filter.
Relief valve is stuck - Relief valve need to be replaced or repair.
Drive pump or hydraulic motor is damaged - Inspect and change as required.
Clogged hydraulic oil cooler - Clean the cooling fins.
Drive system is overloaded - Reduce loading.

Drive system is noisy
Improper oil viscosity - Drain and refill with correct oil.
Air trapped in hydraulic system - Air bleeding is required.
Defective drive pump or hydraulic motor - Replace or repair faulty component.
Mechanical components of drive system are damaged or worn - Inspect the components for worn or defect and repair as required.

Hydraulics Troubleshooting

Hydraulic system overheats
Hydraulic pressure incorrectly adjusted - Adjust pressure correctly.
Main relief valve is defective or unadjusted - Set up or change the relief valve.
Contaminated hydraulic oil - Fill up with fresh hydraulic oil.
Hydraulic fluid level is low - Check and refill the hydraulic fluid.
Hydraulic pump is faulty - Install new pump or repair it.

Boom won't lower or raise
Lift controls are damaged - Check and repair as required.
Hydraulic pump malfunction - Repair or install new hydraulic pump.
Defective hydraulic control valve - Install a new valve or repair it.
Hydraulic cylinder not working - Repair or replace hydraulic cylinder.
Low hydraulic fluid level - Fill the system to proper hydraulic fluid level.

Bucket fails to tilt
Bucket controls are faulty - Repair or replace.
Hydraulic pump is broken - Replace or repair pump if necessary.
Defective hydraulic control valve - Install a new valve or repair it.
Bucket cylinder malfunction - Repair or replace cylinder.
Hydraulic oil level low - Fill the system to proper hydraulic oil level.

Boom or bucket is moving slowly
Faulty hydraulic oil pump - Test pump performance and replace pump if necessary.
Hydraulic cylinder leaking - Install new cylinder seals.
Hydraulic oil level low - Fill the system to proper hydraulic oil level.
Faulty or incorrect setting hydraulic control valve - Set properly or repair.
Hydraulic system loosing pressure - Set pressure correctly.

Lift arm or bucket is moving jerkily
Air in hydraulic system - Bleed air from system.
Dirty hydraulic oil filter element - Clean or install new filter.
Hydraulic oil is contaminated - The oil must be changed.
Scratched cylinder rod or tube - Change failed component.

Hydraulic pump makes excessive noise
Not enough oil or hydraulic system leaking - Top up hydraulic oil or remedy leakage in system.
Hydraulic filter clogging - Service or replace hydraulic filter.
Clogged suction line - Suction line must be serviced.
Air in hydraulic pump - Bleed air.
Damaged pump parts - Install new hydraulic pump or rebuild it.

Electrical Troubleshooting

Battery does not charge
Corroded or loose cable connections - Tighten or service cable connections.
Defective battery terminal clamps - Replace terminal clamps.
Bad cell in battery - Replace the battery.
Damaged or loose belt - Replace belt or adjust belt tension.

Starter turns slowly
Low battery capacity - Recharge the battery.
Battery discharges quickly - Service or replace the battery.
Battery terminals are corroded or wires are disconnected - Check cables and service or change terminals.

Starter motor is not working
Battery is drained or worn - Change or recharge battery.
Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required.
Battery voltage is low - Low battery charging, charge as required.
Defective starter motor - Replace or repair starter.