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Caterpillar 262C Troubleshooting

The Caterpillar 262C skid steer loader is powered by Caterpillar C3.4 DIT 4-cylinder inline direct injection turbocharged liquid-cooled diesel engine with a rated power of 82 hp (61 kW) at 2500 rpm. The Cat 262C is equipped with a vertical-lift loader boom, one-speed or two-speed hydrostatic transmission, 100HS drive chains, and 12.00x16.5 standard tires. The hydraulic system has a pump with fluid flow rate of 22 gpm (84 lpm) or 33 gpm (125 lpm). The skid steer loader has a rated operating capacity of 2700 lbs (1225 kg) and tipping load of 5400 lbs (2450 kg). The lift height is 127 inches (3235 mm) to hinge pin, and dump height is 96.4 inches (2450 mm).

Engine Troubleshooting

Diesel engine hard to start or doesn't start
Air trapped in fuel system - Bleed air.
Fuel filter element is dirty - Change filter element.
Clogged or burnt injection nozzle - Replace injection nozzles.
Water or dirt in fuel system - Drain, flush, and service the system.
Valve clearance is not correct - Have it adjusted.
Fuel injection pump damage - Replacement or repair required.

Diesel starts and then shuts off
Dirty air cleaner - Clean or change.
Dirty fuel filter - Replace filter element.
Poor fuel injection pump tightness - Look for any leaks of fuel pump, tighten it fast.
Defective or clogged fuel injectors - Replace or clean fuel injectors.
Faulty fuel injection pump - Install a new pump or rebuild.

Engine stalls while running
Coolant temperature is low - Warm up the engine.
Fuel filter element clogging - Change filter element.
Air in the fuel pipes - Bleed the fuel pipes.
Clogged or burnt injection nozzle - Test injection nozzles and change if necessary.
Fuel injection pump timing is not adjusted - Set the fuel pump timing correctly.

Engine stops while idle
Improperly adjusted low idle speed - Adjust the low idle speed.
Damaged fuel injection pump - Change or repair the pump.
Defective fuel injectors - Replace fuel injectors.
Improper valve clearance - Adjust to proper valve clearance.

Engine power is insufficient
Air filter is dirty - Clean or replace element.
Defective injection nozzle - Check and replace nozzles if required.
Improper fuel injection pressure - Adjust to proper pressure.
The valve clearance is not adjusted - Adjust valve clearance.
Low idle speed set incorrectly - Normalize low idle speed.
Fuel hoses or lines are dirty - Clean fuel system lines and hoses.
Cylinder head gasket defective - Cylinder-head gasket replacement required.
Leaking or defective piston rings - Change piston rings.

Engine overheating
Coolant level is low - Refill to the correct level and inspect system for leaks.
Lack of engine oil - Add oil to the engine crankcase.
Radiator fins are dirty or radiator cap is defective - Replace cap or clean radiator.
Loose or damaged fan belt - Change the fan belt.
Engine overloaded - Load reducing is recommended.

Oil pressure too low
Engine oil level low - Fill crankcase to proper oil level.
Oil filter clogged - Replace or service engine oil filter.
Oil grade or viscosity is incorrect - Fill up with the proper oil viscosity.
Incorrect oil clearance in main bearing - Bearings need to be reinstalled.
Oil pump failure - Replace as required.

Abnormal engine noise or knocking
Not enough engine oil - Add oil to the engine crankcase.
Engine not warmed up - Warm up engine as required.
Wrong setting of fuel injection pump timing - Adjust as recommended.
Improperly adjusted low idle speed - Correct low idle settings.
Clogged or defective injectors - Change or clean fuel injectors.
Connecting rod is not aligned or defective - Need to align or replace the connecting rod.
Worn or scored pistons - Pistons need to be replaced.

Drive System Troubleshooting

Drive system will not operate in either direction
Low hydraulic oil level - Check and refill the hydraulic oil.
Drive chain is worn - Check drive chain and change defective components.
Relief valve is damaged - Repair or replace.
Clogged suction line or hydraulic filter - Check, clean, or change if necessary.
Foot or hand controls are faulty - Replace or repair.
Drive pump or motor malfunction - Repair or change faulty component.

Lack of power
Clogged hydraulic oil filter - Check, clean, or replace as required.
Worn or open relief valve - Close or replace relief valve.
Transmission components are faulty or damaged - Check and replace faulty components.
Defective input drive shaft - Change or repair faulty drive shaft.
Air leaks in hydraulic system - Bleed air from hydraulic system.

Drive system overheating
Hydraulic fluid is insufficient - Add fluid as required.
Hydraulic fluid filter is clogged - Replace or service hydraulic filter.
Relief valver is broken - Change or repair defective relief valve.
Defective drive pump or hydraulic motor - Inspect and replace as necessary.
Oil cooler is clogged - Cooling fins need to be cleaned.
Overloaded drive system - Load should be reduced.

Drive system is noisy
Incorrect oil viscosity - Use oil of correct viscosity.
Hydraulic system is leaking air - Need to bleed air.
Defective drive pump or hydraulic motor - Repair or replace faulty component.
Worn or damaged mechanical parts of drive system - Check the parts for worn or defect and replace if required.

Hydraulics Troubleshooting

Hydraulic system overheating
Hydraulic pressure is incorrect - Adjust it correctly.
Defective or misadjusted main relief valve - Adjust or change relief valve.
Dirty hydraulic oil - Fill up with fresh hydraulic oil.
Lack of hydraulic fluid - Need to add fluid.
Hydraulic pump is worn - Repair or change pump if required.

Lift arm won't raise or lower
Lift controls failure - Change or repair.
Damaged hydraulic oil pump - Repair or change pump if required.
Damaged hydraulic control valve - Change or repair hydraulic valve.
Hydraulic cylinder failure - Change or repair lift cylinder.
Hydraulic fluid is insufficient - Fill up the hydraulic fluid.

Bucket does not function
Faulty bucket tilt controls - Check and repair as required.
Hydraulic pump is broken - Install new pump or repair it.
Hydraulic control valve is faulty - Install a new valve or repair it.
Bucket cylinder is faulty - Repair or replace cylinder.
Hydraulic fluid is insufficient - Fill up the hydraulic fluid.

Bucket or lift arm is moving slowly
Hydraulic pump is defective - Test pump performance and replace pump if necessary.
Leaking hydraulic cylinder - Repair leak by replacing the seals.
Hydraulic fluid level low - Fill up the hydraulic fluid.
Damaged or incorrect adjusted hydraulic control valve - Repair or adjust correctly.
Hydraulic pressure is low - Hydraulic pressure must be set correctly.

Bucket or boom jerks when working
There is air in the hydraulic system - Bleed hydraulic system.
Plugged hydraulic oil filter - Change or clean oil filter.
Dirty hydraulic oil - Change hydraulic oil.
Cylinder tube or rod scoring - Change damaged component.

Hydraulic pump is noisy
Lack of oil or hydraulic leakage - Add hydraulic oil or correct system leaks.
Hydraulic filter is clogged - Service or replace hydraulic filter.
Suction line is dirty - Service the suction line.
Air enters the pump - Bleed air from hydraulics.
Faulty pump parts - Rebuild or install new pump.

Electrical Troubleshooting

Battery will not charge
Electrical cable connections are corroded or loose - Tighten or clean connections.
Electrical terminal connectors are defective - Terminal connectors need to be changed.
Dead cell in battery - Use a new battery.
Loose or damaged belt - Need to adjust belt tension or replace belt.

Starter motor cranks slow
Low battery output - Charge the battery.
Battery drains quickly - Service charging system or install new battery.
Disconnected battery cables or bad terminals - Connect cables properly or replace terminals.

Starter will not work
Battery is discharged or worn - Battery needs to be recharged or replaced.
Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required.
Battery capacity is low - Battery is drained, charge it.
Defective starter motor - Starter should be replaced.