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New Holland L328 Troubleshooting

The New Holland L328 skid steer loader driveline system components: a 207 cu.in (3.4L) FPT F5H FL463A 4-cylinder turbocharged diesel engine with a rated power of 68 hp (51 kW), and 1-speed or 2-speed hydrostatic transmission. The hydraulic system has a pump with a rated capacity of 24.2 gal/min (91.5 l/min) or 37.6 gal/min (142.5 l/min). The New Holland L328 is equipped with a vertical-lift boom, ASA 100 drive chains, and 12x16.5 standard tires. The skid steer has a maximum lift height of 129.4" (3285 mm) to hinge pin and dump height of 103.1" (2620 mm). The rated operating capacity is 2800 lbs (1270 kg), and tipping load is 5600 lbs (2540 kg).

Engine Troubleshooting

Engine starts up hard or won't start
Air in the fuel system - Air bleeding.
Fuel filter plugged - Replace filter element.
Dirty or damaged injection nozzles - If necessary, replace with a new nozzle.
Dirt or water in fuel system - Drain water or flush dirt from the system.
Excessive valve clearance - Adjust to proper valve clearance.
Fuel injection pump is damaged - Rebuild or replace pump.

Diesel starts and suddenly stops
Air filter is dirty - Service or replace the air filter.
Fuel filter plugged - Clean or replace the filter.
Fuel injection pump leakage - Check the fuel injection pump for leaks and fix it.
Dirty or defective injectors - Clean or replace fuel injectors.
Damaged fuel injection pump - Repair or replace injection pump.

Engine stops running suddenly
Engine is not preheated - Warm up engine as required.
Fuel filter element clogging - Replace filter element.
Air in fuel system - Bleed fuel system.
Dirty or damaged injection nozzles - Check and replace nozzles if required.
Timing of fuel injection pump is incorrect - Set the fuel pump timing correctly.

Engine stops while idling
Low idle speed setting is incorrect - Need to adjust idle speed.
Fuel injection pump is not operating properly - Repair or install a new fuel pump.
Fuel injectors are faulty or clogged - Change or clean fuel injectors.
Improper valve clearance - Adjust valve clearance.

Loss of engine power
Plugged air cleaner - Clean or change cleaner.
Faulty fuel injection nozzles - Change fuel injection nozzles.
Insufficient fuel injection pressure - Adjust to correct pressure.
Valve out of adjustment - Check and adjust.
Improperly adjusted low idle speed - Normalize low idle speed.
Fuel hoses or lines clogging - Service fuel hoses and lines.
Cylinder head gasket is defective - Install a new gasket.
Piston rings are broken or leaking - Replace the piston rings as required.

Engine overheating
Engine has a lack of coolant - Top up coolant fluid and check system for leaks.
Lack of engine oil - Need to add engine oil.
Defective radiator cap or clogged radiator core - Clean radiator or change cap.
Loose or defective fan belt - The fan belt needs to be replaced.
Engine is overloaded - Load reducing required.

Oil pressure too low
Insufficient engine oil - Need to add oil.
Oil filter is dirty - Replace or service engine oil filter.
Incorrect engine oil Fill up with the correct oil viscosity.
Incorrect oil clearance in main bearing - Change bearings.
Oil pump malfunction - Inspect and change as required.

Engine noise or knocking
Engine oil insufficient - Check oil level and add oil as required.
Engine is not preheated - Warm up to required temperature.
Fuel injection pump timing is wrong - Adjust fuel injection pump as required.
Low idle speed setting is not correct - Adjust the low idle speed.
Fuel injectors are faulty or clogged - Clean or replace fuel injectors.
Connecting rod misalignment or failure - Alignment procedure or replacement is required.
Worn or scored pistons - Replace the pistons as required.

Drive System Troubleshooting

Drive system сan't work in either direction
Insufficient hydraulic oil - Fill the system to proper hydraulic oil level.
Worn drive chain - Check drive chain and change faulty components.
Relief valve is stuck - Repair or replace relief valve.
Hydraulic filter or suction line is plugged - Service suction line or change hydraulic filter.
Hand or foot controls failure - Repair or replace.
Worn drive motor or pump - Repair or replace faulty component.

Reduced power
Hydraulic oil filter is clogged - Change hydraulic filter.
Opened or defective relief valve - Replace or close relief valve.
Transmission parts are damaged or faulty - Inspect and replace defective parts.
Input drive shaft is worn - Change or repair faulty drive shaft.
Air leaks in hydraulic system - Need to bleed air.

Drive system is overheated
Insufficient hydraulic oil - Fill the system to proper hydraulic oil level.
Plugged hydraulic fluid filter - Change hydraulic filter.
Worn or damaged relief valve - Service or change relief valve.
Hydraulic motor or drive pump failure - Check and repair if required.
Hydraulic oil cooler is plugged - Cooling fins should be cleaned.
Overloaded drive system - Load should be reduced.

Drive system is noisy
Improper oil viscosity - Use correct oil viscosity.
Hydraulic system is leaking air - Need to bleed air.
Hydraulic motor or drive pump is worn - Inspect and change as required.
Worn or defective mechanical components of drive system - Inspect drive system and replace faulty components.

Hydraulics Troubleshooting

Hydraulic system has overheating
Incorrect hydraulic pressure setting - Adjust pressure as required.
Main relief valve improper adjustment or failure - Adjust or replace the relief valve.
Hydraulic fluid contamination - The fluid must be changed.
Hydraulic oil level is insufficient - Check oil level and add hydraulic oil as required.
Faulty hydraulic oil pump - Repair or replace pump if necessary.

Boom fails to lift or drop
Damaged lift controls - Inspect and repair if necessary.
Defective hydraulic pump - Install new pump or repair it.
Damaged hydraulic control valve - Repair or replace the valve.
Faulty hydraulic cylinder - Replace or repair boom cylinder.
Insufficient hydraulic oil - Check and refill the hydraulic oil.

Bucket is not working
Faulty bucket tilt controls - Inspect and repair if necessary.
Defective hydraulic pump - Change or repair hydraulic pump if required.
Damaged hydraulic control valve - Repair or replace hydraulic valve.
Bucket cylinder is faulty - Change or repair cylinder.
Low hydraulic fluid level - Fill up the hydraulic fluid.

Slow boom or bucket action
Worn hydraulic oil pump - Check pump flow and install new pump if necessary.
Oil leaks from hydraulic cylinder - Replace cylinder piston seals.
Low hydraulic fluid level - Add fluid as required.
Hydraulic control valve is not set properly or defective - Repair or set correctly.
Hydraulic system loosing pressure - Set pressure correctly.

Lift arm or bucket is working jerkily
Hydraulic system is leaking air - Bleed air from system.
Hydraulic oil filter element clogging - Clean or change the filter.
Hydraulic oil is dirty - Fill up with fresh hydraulic oil.
Scored cylinder tube or rod - Change failed component.

Excessive hydraulic pump noise
Hydraulic leaks or lack of oil - Add hydraulic oil or correct system leaks.
Plugged hydraulic filter - Replace or clean the filter.
Plugged suction line - Need to clean the suction line.
Air trapped in hydraulic pump - Remove air from hydraulics.
Faulty pump parts - Rebuild or change hydraulic pump.

Electrical Troubleshooting

Battery won’t charge
Wiring connections are corroded or loose - Tighten or service cable connections.
Battery terminal connectors are faulty - Replace terminal connectors.
Dead cell in battery - Battery replacement required.
Loose or worn belt - Need to adjust belt tension or replace belt.

Starter cranks slowly
Low battery output - Low battery charging, charge as required.
Battery discharges quickly - Service charging system or install new battery.
Disconnected wiring or bad battery terminals - Check wire connections and change or service terminals.

Starter will not work
Battery is discharged or defective - Battery needs to be recharged or replaced.
Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly.
Low battery output voltage - Recharge the battery.
Faulty starter motor - Starter needs to be changed.