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Caterpillar 299D3 XE Problems

The Cat 299D3 XE compact track loader is powered by 231.9 cu.in (3.8L) Cat C3.8 DIT 4-cylinder turbocharged diesel engine with a rated power of 106 hp (79 kW). The Caterpillar 299D3 XE is equipped with a two-speed hydro transmission, vertical-lift loader boom, fully suspension undercarriage, and steel embedded rubber tracks. The hydraulic system has a pump with fluid flow rate of 23 gpm (86 lpm) or 40 gpm (150 lpm). The hydraulic pressure is 3335 psi (230 bar) or 4060 psi (280 bar). The loader has a rated operating capacity of 3560 lbs (1620 kg) and tipping load of 10170 lbs (4630 kg). The lift height is 126.3" (3.2 m) to hinge pin, and dump height is 94.5" (2.4 m).

Engine Troubleshooting

Engine hard to start or won't start
Air in the fuel lines - Bleed the fuel lines.
Clogged fuel filter - Replace the filter element.
Fuel injection nozzles are faulty or clogged - Change fuel injection nozzles.
Water or dirt in fuel system - Drain, flush, and service the system.
Valve out of adjustment - Check and adjust.
Fuel injection pump is defective - Repair or install a new fuel pump.

Diesel starts and suddenly stops
Air filter is dirty - Service or replace the air filter.
Fuel filter element is dirty - Clean or replace the filter.
Fuel injection pump leakage - Check the fuel injection pump for leaks and fix it.
Defective or clogged fuel injectors - Clean or replace fuel injectors.
Fuel injection pump malfunction - Change pump or rebuild it.

Engine shuts off suddenly while running
Engine is not preheated - Warm up the engine.
Dirty fuel filter - Replace filter element.
There is air in the fuel system - Bleed the system.
Defective injection nozzle - Clean or replace injection nozzles.
Improper fuel injection timing - Use the correct fuel injection pump timing adjustment.

Engine stalls while idle
Low idle speed setting is incorrect - Correct low idle adjustment.
Damaged fuel injection pump - Replacement or repair required.
Fuel injector fault - Inspect fuel injectors and change as required.
Improper valve clearance - Adjust valve clearance according to specifications.

Low engine power
Air cleaner is dirty - Clean or change cleaner.
Faulty fuel injection nozzles - Clean or replace injection nozzles.
Fuel injection pressure is incorrect - Adjust to proper pressure.
The valve clearance is incorrect - Need to adjust valve clearance.
Incorrect low idle setting - Correct low idle settings.
Fuel hoses or lines are dirty - Clean fuel lines and hoses.
Cylinder head gasket is blown - Cylinder-head gasket replacement required.
Leaking or defective piston rings - Piston rings need to be replaced.

Engine overheating
Engine coolant is insufficient - Fill the cooling system and check components for leaks or other faults.
Not enough engine oil - Fill up the engine oil.
Clogged radiator fins or leaking radiator cap - Replace cap or clean radiator.
Fan belt is worn or faulty - If necessary, replace the belt.
Engine is under excessive load - Load reducing required.

Insufficient oil pressure
Insufficient engine oil - Fill up the engine oil.
Oil filter is clogged - Change or service engine oil filter.
Oil grade or viscosity is wrong - Fill up with the correct oil viscosity.
Excessive oil clearance of crankshaft bearing - Change bearings.
Oil pump malfunction - Inspect and change as required.

Engine knocking sound or abnormal noise
Not enough engine oil - Fill up the engine oil.
Engine is cold - Normalize the temperature by warming up the engine.
Timing of fuel injection pump is incorrect - Use the correct fuel injection pump timing adjustment.
Incorrect low idle speed adjustment - Correct low idle settings.
Fuel injectors are faulty or clogged - Test and replace fuel injectors if necessary.
Connecting rod is defective or not aligned - Need to replace or align the connecting rod.
Piston wear or scoring - Pistons need to be replaced.

Drive System Troubleshooting

Drive system doesn't operate in one direction or either direction
Low hydraulic oil level - Fill the system to proper hydraulic oil level.
Jammed or damaged undercarriage tracks - Remove jamming or repair tracks.
Stuck relief valve - Repair or install a new relief valve.
Plugged hydraulic filter or suction line - Replace hydraulic filter or clean suction line.
Worn or defective hand or foot controls - Check and repair as required.
Drive motor or pump failure - Inspect and change as required.

Machine is not driving straight or driving is jerky
Damaged or jammed undercarriage tracks - Remove jamming or repair tracks.
Tracks are faulty or sagging - Repair tracks or correct track sag with tension.
Track frame is blocked with debris, dirt, or foreign objects - Clean track frame, remove debris and foreign objects.

Power is too low
Plugged hydraulic oil filter - Replace hydraulic filter.
Defective or open relief valve - Close or change relief valve.
Transmission parts are worn or defective - Check and change faulty components.
Input drive shaft is stuck - Service or change faulty drive shaft.
Air in hydraulic system - Bleed air from system.

Drive system keeps overheating
Hydraulic fluid is insufficient - Check and refill the hydraulic fluid.
Clogged hydraulic fluid filter - Change or service hydraulic filter.
Relief valve is damaged or worn - Service or change relief valve.
Hydraulic motor or drive pump is worn - Replace or repair faulty component.
Hydraulic oil cooler is dirty - Clean the cooling fins.
Drive system overload - Reduce drive system load.

Drive system makes excessive noise
Incorrect oil viscosity - Use proper oil viscosity.
Air in hydraulic system - Bleed hydraulic system.
Hydraulic motor or drive pump is defective - Check and repair if required.
Worn or damaged mechanical components of drive system - Inspect the components for defect or damage and repair as needed.

Hydraulics Troubleshooting

Hydraulic system overheating
Incorrect hydraulic pressure setting - Adjust it correctly.
Faulty or improperly adjusted main relief valve - Adjust or change relief valve.
Dirty hydraulic fluid - Fill up with fresh hydraulic fluid.
Hydraulic oil level is low - Add oil to the hydraulic system.
Hydraulic pump is faulty - Install new pump or repair it.

Boom does not raise or lower
Defective lift controls - Change or repair.
Hydraulic pump is broken - Repair or replace pump if necessary.
Defective hydraulic control valve - Repair or change the valve.
Hydraulic cylinder not working - Replace or repair boom cylinder.
Hydraulic oil level low - Need to add oil.

Bucket won't move
Bucket controls failure - Replace or repair.
Damaged hydraulic oil pump - Repair or change pump if required.
Hydraulic control valve is defective - Repair or change the valve.
Bucket cylinder failure - Install a new cylinder or repair it.
Hydraulic fluid is insufficient - Fill the system to proper hydraulic fluid level.

Slow bucket or lift arm operation
Worn hydraulic oil pump - Check the pump capacity and replace pump if required.
Oil leaks from hydraulic cylinder - Replace cylinder piston seals.
Hydraulic oil level low - Check and refill the hydraulic oil.
Faulty or incorrect setting hydraulic control valve - Repair or set properly.
Hydraulic pressure loss - Set pressure correctly.

Bucket or boom is working jerkily
Air trapped in hydraulic system - Bleed air from system.
Hydraulic oil filter clogging - Clean or replace the filter.
Dirty hydraulic fluid - Fill up with fresh hydraulic fluid.
Scored cylinder tube or rod - Replace damaged component.

Hydraulic pump is excessively noisy
Leaking hydraulic system or insufficient oil level - Correct hydraulic leaks or top up oil as needed.
Dirty hydraulic filter - Service or change hydraulic filter.
Suction line is dirty - Suction line must be serviced.
Air in hydraulic pump - Bleed air from hydraulics.
Pump parts are faulty - Rebuild or replace hydraulic pump.

Electrical Troubleshooting

Battery is not charging
Electrical cable connections are loose or corroded - Service or tighten connections.
Battery terminal clamps are faulty - Change terminal clamps.
Battery is defective - Use a new battery.
Loose or defective belt - Replace belt or adjust belt tension.

Starter motor turns slow
Low battery capacity - Battery is drained, charge it.
Battery is not holding charge - Service or change the battery.
Bad battery terminals or disconnected wiring - Connect wires properly or change terminals.

Starter will not crank
Battery is drained or worn - Charge or replace the battery.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Low battery output voltage - Low battery charging, charge as required.
Starter motor is defective - Repair or install a new starter.