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New Holland L318 Troubleshooting

The New Holland L318 skid steer loader driveline system components: Shibaura N844LT 4-cylinder indirect injection turbocharged diesel engine with a rated power of 57 hp (42.4 kW), and 1-speed or 2-speed hydrostatic 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 L318 is equipped with a vertical-lift boom, ASA 80 drive chains, and 10x16.5 standard tires. The skid steer loader has a maximum lift height of 120" (3050 mm) to hinge pin and dump height of 93.6" (2380 mm). The rated operating capacity is 1800 lbs (818 kg), and tipping load is 3600 lbs (1640 kg).

Engine Troubleshooting

Engine starts up hard or doesn't start
Air trapped in fuel system - Bleed air.
Dirty fuel filter - Clean the filter or install new filter element.
Burnt or clogged injection nozzle - Check and replace nozzles if required.
Water in the fuel system - Change fuel and repair fuel system.
Incorrect valve clearance - Correct valve clearance needs to be set.
Fuel injection pump is broken - Rebuild or install a new injection pump.

Engine starts but stalls immediately
Dirty air cleaner - Clean or replace element.
Fuel filter element is clogged - Install new filter element.
Problems with fuel injection pump tightness - Inspect fuel injection pump for leaks.
Clogged or defective injectors - Change or clean fuel injectors.
Fuel injection pump is faulty - Replace or rebuild injection pump.

Engine stalls during operation
Low coolant temperature - Warm up to required temperature.
Fuel filter element is dirty - Clean or change the filter.
There is air in the fuel system - Bleed the system.
Clogged or burnt injection nozzle - Clean or replace injection nozzles.
Timing of fuel injection pump is incorrect - Adjust as recommended.

Engine stalls while idling
Low idle speed setting is not correct - Adjust low idle speed.
Fuel injection pump is not working correctly - Repair or install new pump.
Fuel injector fault - Replace or clean fuel injectors.
Improper valve clearance - Adjust valve clearance according to specifications.

Diesel engine is losing power
Plugged air cleaner - Clean or change cleaner.
Clogged or defective injection nozzles - Test injection nozzles and change if necessary.
Uneven fuel injection pressure - Test fuel injection pressure and adjust it correctly.
The valve clearance is incorrect - Check and adjust as required.
Improperly adjusted low idle speed - Adjust low idle speed.
Fuel lines or hoses are dirty - Clean fuel lines and hoses.
Cylinder head gasket is worn - Replace the gasket as required.
Damaged or leaking piston rings - Install new piston rings.

Engine overheats
Insufficient coolant fluid - The cooling system needs to be refilled and checked for faults.
Engine oil level is low - Checking oil level and add if necessary.
Radiator core is dirty or radiator cap is damaged - Change cap or clean radiator.
Broken or loose fan belt - Change as required.
Engine is under excessive load - Load reducing is recommended.

Oil pressure too low
Low crankcase oil level - Check and refill the oil.
Oil filter clogged - Service or replace engine oil filter.
Incorrect engine oil Use proper viscosity oil.
Incorrect oil clearance in crankshaft bearing - Bearing replacement required.
Defective oil pump - Repair or replace.

Abnormal engine knocking or noise
Low engine oil level - Check oil level and add oil as required.
Engine is not warmed up to the required temperature - Normalize the temperature by warming up the engine.
Incorrect adjustment of fuel injection pump timing - Check the fuel injection pump timing adjustment.
Wrong adjustment of low idle speed - Adjust as required.
Defective fuel injectors - Replace or clean fuel injectors.
Connecting rod is not aligned or worn - Need to replace or align the connecting rod.
Piston wear or scoring - Pistons replacement required.

Drive System Troubleshooting

Machine will not move in either direction or one direction
Hydraulic fluid level low - Check and refill the hydraulic fluid.
Drive chain failure - Check drive chain and change defective components.
Relief valve is defective - Service or change relief valve.
Dirty suction line or hydraulic filter - Check, clean, or replace if required.
Defective foot or hand controls - Inspect and repair if necessary.
Worn drive motor or pump - Repair or replace faulty component.

Reduced power
Hydraulic oil filter is plugged - Check, clean, or change as necessary.
Relief valve is damaged or open - Change or close relief valve.
Faulty or damaged transmission components - Check and change defective components.
Stuck input drive shaft - Rebuild or change the shaft.
Air in the hydraulic system - Bleed hydraulic system.

Drive system keeps overheating
Insufficient hydraulic fluid - Check and refill the hydraulic fluid.
Hydraulic fluid filter is clogged - Change hydraulic filter.
Relief valve is defective - Relief valve need to be replaced or repair.
Hydraulic motor or drive pump failure - Inspect and replace as necessary.
Hydraulic oil cooler is plugged - Cooling fins should be cleaned.
Drive system overloaded continuously - Reduce loading.

Drive system makes excessive noise
Oil viscosity is too heavy - Use oil of proper viscosity.
Air leaks in hydraulic system - Bleed air from hydraulic system.
Damaged drive pump or hydraulic motor - Change or repair faulty component.
Defective or worn mechanical parts of drive system - Inspect drive system and replace faulty components.

Hydraulics Troubleshooting

Hydraulic system has overheating
Incorrect hydraulic pressure setting - Adjust pressure as required.
Faulty or improperly adjusted main relief valve - Adjust or change relief valve.
Hydraulic fluid is contaminated - Change hydraulic fluid.
Lack of hydraulic oil - Add oil to the hydraulic system.
Hydraulic pump is faulty - Repair or install new hydraulic pump.

Lift arm won't raise or lower
Lift controls are damaged - Repair or replace.
Hydraulic pump failure - Change or repair hydraulic pump if required.
Hydraulic control valve malfunction - Repair or replace hydraulic valve.
Hydraulic cylinder is faulty - Repair or replace hydraulic cylinder.
Hydraulic oil level low - Checking hydraulic oil level and add if necessary.

Bucket can't tilt
Faulty bucket tilt controls - Repair or change.
Hydraulic pump is broken - Repair or change pump if required.
Defective hydraulic control valve - Change or repair hydraulic valve.
Bucket cylinder failure - Replace or repair cylinder.
Insufficient hydraulic oil - Checking hydraulic oil level and add if necessary.

Bucket or lift arm is working slowly
Faulty hydraulic oil pump - Check hydraulic pump flow and replace pump if necessary.
Leaking hydraulic cylinder - Change cylinder piston seals.
Hydraulic oil is insufficient - Check and refill the hydraulic oil.
Worn or unadjusted hydraulic control valve - Repair or set properly.
Hydraulic pressure is low - Adjust it correctly.

Lift arm or bucket movements are jerky
Air in hydraulic system - Bleed air from system.
Hydraulic oil filter element is dirty - Clean or change the filter.
Hydraulic oil is dirty - The oil must be changed.
Cylinder rod or tube is scratched - Change failed component.

Hydraulic pump makes excessive noise
Low oil level or hydraulic leaks - Repair hydraulic leaks or add oil as required.
Plugged hydraulic filter - Clean or install new filter.
Suction line is dirty - Suction line needs to be cleaned.
Air in hydraulic pump - Remove air from hydraulics.
Damaged pump components - Replace or rebuild the pump.

Electrical Troubleshooting

Battery cannot be charged
Electrical cable connections are loose or corroded - Tighten or service connections.
Faulty battery terminal clamps - Terminal clamps need to be replaced.
Defective battery - Install a new battery.
Belt is loose or defective - Replace belt or adjust belt tension.

Starter cranks slowly
Low battery capacity - Battery needs to be recharged.
Battery runs out quickly - Service charging system or change battery.
Disconnected battery cables or bad terminals - Check wire connections and change or service terminals.

Starter does not work
Battery is discharged or defective - Charge or change the battery.
Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly.
Low battery output voltage - Recharge the battery.
Starter motor is faulty - Change or repair starter.