New Holland C175 Track Loader Troubleshooting

The New Holland C175 compact track loader driveline system components: a 135 cu.in (2.2L) Shibaura N844LT four-cylinder turbocharged diesel engine with a rated power of 60 hp (45 kW), and 2-speed hydrostatic transmission. The hydraulic system has a pump with a rated capacity of 17.2 gal/min (65.2 l/min). The system relief pressure is 2500 psi (172 bar). The New Holland C175 is equipped with hydraulic disc brakes and steel-embedded rubber tracks. The compact track loader has a boom lifting force of 3003 lbs (1360 kg) and bucket breakout force of 4312 lbs (1955 kg). The rated operating capacity is 2200 lbs (998 kg), and tipping load is 6300 lbs (2860 kg).

Engine Troubleshooting

Engine difficult to start or will not start

Air in fuel tank - Bleed fuel tank.
Fuel filter plugged - Install new filter element.
Burnt or defective injection nozzle - Clean or replace injection nozzles.
Dirt or water in fuel system - Drain water or flush dirt from the system.
Valve out of adjustment - Correct valve clearance.
Faulty fuel injection pump - Rebuild or install a new injection pump.

Engine starts and immediately shuts off

Clogged air filter - Install new air filter element.
Fuel filter element is clogged - Clean the filter or install new filter element.
Fuel injection pump is leaking - Repair any leaks.
Dirty or defective injectors - Inspect fuel injectors and change as required.
Fuel injection pump is defective - Replace injection pump or repair it.

Engine stops suddenly during operation

Engine is cold - Normalize the temperature by warming up the engine.
Dirty fuel filter - Clean the filter or install new filter element.
Air in the fuel pipes - Bleed the fuel pipes.
Damaged or dirty injection nozzles - Change fuel injection nozzles.
Fuel injection pump timing is wrong - Adjust fuel injection pump as required.

Engine stops while idle

Improperly adjusted low idle speed - Correct the settings.
Damaged fuel injection pump - Change pump or rebuild it.
Defective fuel injectors - Clean or replace fuel injectors.
The valve clearance is incorrect - Adjust valve clearance.

Engine lacks power

Clogged air filter - Install new air filter element.
Fuel injection nozzles are faulty or clogged - Change fuel injection nozzles.
Fuel injection pressure is wrong - Adjust pressure to proper level.
Excessive valve clearance - Adjust valve clearance according to specifications.
Low idle speed setting is not correct - Correct low idle settings.
Dirty fuel lines or hoses - Clean fuel system lines and hoses.
Cylinder head gasket defective - Install a new gasket.
Piston rings are damaged or leaking - Replace the piston rings as required.

Engine overheated

Lack of coolant in cooling system - Fill the cooling system and check components for leaks or other faults.
Lack of engine oil - Check oil level and add oil as required.
Clogged radiator core or leaking radiator cap - Change cap or clean radiator.
Fan belt is worn or faulty - Replace the fan belt.
Engine overloaded - Load reducing is recommended.

Insufficient oil pressure

Engine oil insufficient - Fill the crankcase with oil.
Oil filter clogged - Service or change engine oil filter element.
Incorrect oil viscosity - Use correct viscosity oil.
Crankshaft bearing has incorrect oil clearance - Bearing needs to be changed.
Oil pump failure - Remove and inspect oil pump.

Abnormal engine noise or knocking

Low engine oil level - Fill up the engine oil.
Low coolant temperature - Warm up the engine.
Timing of fuel injection pump is incorrect - Set the fuel pump timing correctly.
Low idle speed setting is not correct - Adjust the low idle speed.
Dirty or defective injectors - Replace or clean fuel injectors.
Misaligned or defective connecting rod - Align or change connecting rod.
Worn or broken pistons - Pistons replacement required.

Drive System Troubleshooting

Machine is not moving forward or backward

Hydraulic fluid is insufficient - Checking hydraulic fluid level and add if necessary.
Blocked or defective undercarriage tracks - Repair or remove blockage.
Relief valve is worn or damaged - Service or change relief valve.
Suction line or hydraulic filter is clogged - Check, clean, or change if necessary.
Hand or foot controls failure - Repair or change.
Defective drive pump or motor - Change or repair faulty component.

Machine does not drive straight or drives jerky

Jammed or damaged track mechanism - Remedy jamming or repair tracks.
Tracks are improperly tensioned or worn - Adjust track tension or replace tracks.
Track frame is blocked with debris, dirt, or foreign objects - Clean undercarriage track frame.

Low power

Hydraulic oil filter is dirty - Replace hydraulic filter.
Relief valve is opened or defective - Close or replace relief valve.
Worn or faulty transmission components - Inspect and replace defective parts.
Defective input drive shaft - Repair or replace faulty drive shaft.
Air in hydraulic system - Bleed air from hydraulic system.

Drive system is overheated

Low hydraulic oil level - Need to add oil.
Plugged hydraulic fluid filter - Check, clean, or replace as required.
Worn or defective relief valve - Repair or change.
Worn hydraulic motor or drive pump - Inspect and replace as necessary.
Plugged hydraulic oil cooler - Clean cooling fins as required.
Drive system overloaded continuously - Reduce the load.

Excessive noise

Oil viscosity is too heavy - Use proper oil viscosity.
Air trapped in hydraulic system - Bleed air from hydraulic system.
Drive pump or hydraulic motor is damaged - Repair or replace faulty component.
Mechanical parts of drive system are worn - Inspect drive system and replace faulty components.

Hydraulics Troubleshooting

Hydraulic system has overheating

Hydraulic pressure incorrectly adjusted - Adjust pressure as required.
Main relief valve is defective or unadjusted - Adjust relief valve or change if required.
Hydraulic oil is dirty - Hydraulic oil change required.
Hydraulic oil level is insufficient - Add oil to the hydraulic system.
Hydraulic pump is worn - Replace or repair pump if necessary.

Boom can't lift or drop

Lift controls failure - Repair or replace.
Hydraulic pump is broken - Replace or repair pump if necessary.
Hydraulic control valve failure - Replace or repair the valve.
Hydraulic cylinder malfunction - Repair or replace hydraulic cylinder.
Hydraulic fluid is insufficient - Fill up the hydraulic fluid.

Bucket tilt does not work

Bucket controls failure - Repair or change.
Hydraulic pump not working - Repair or install new hydraulic pump.
Damaged hydraulic control valve - Repair or change hydraulic valve.
Hydraulic bucket cylinder is broken - Repair or change cylinder.
Hydraulic fluid is insufficient - Fill the system to proper hydraulic fluid level.

Slow boom or bucket operation

Hydraulic pump is faulty - Check the pump performance and replace it if required.
Hydraulic cylinder oil leakage - Correct leakage by changing the seals.
Low hydraulic oil level - Check and refill the hydraulic oil.
Damaged or incorrect adjusted hydraulic control valve - Repair or set properly.
Hydraulic pressure has dropped - Adjust pressure as required.

Lift arm or bucket is working jerkily

Air in the hydraulic system - Air bleeding is required.
Hydraulic oil filter is dirty - Replace or clean the filter.
Hydraulic oil is contaminated - Change hydraulic oil.
Cylinder rod or tube is scuffed - Change defective component.

Hydraulic pump is noisy

Hydraulic leaks or lack of oil - Remedy hydraulic leakage or refill oil as necessary.
Plugged hydraulic filter - Clean or install new filter.
Suction line is clogged - Suction line must be serviced.
Pump is sucking air - Need to bleed air.
Pump components are faulty - Change or rebuild pump.

Electrical Troubleshooting

Battery won’t charge

Loose or corroded electrical wiring connections - Service or tighten cable connections.
Battery terminal clamps are defective - Install new terminal clamps.
Battery faulty cell - Battery replacement required.
Belt is worn or loose - Replace belt or adjust belt tension.

Starter turns slowly

Battery capacity is low - Battery is drained, recharge it.
Battery does not hold charge - Service charging system or install new battery.
Bad battery terminals or disconnected wiring - Connect cables properly or replace terminals.

Starter will not work

Battery is drained or worn - Recharge or change battery.
Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly.
Low battery voltage - Battery is drained, recharge it.
Faulty starter motor - Repair or change starter.