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Mustang 2099 Troubleshooting

The Mustang 2099 skid steer loader driveline system components: a 269 cu.in (4.4L) Perkins 1104C-44 4-cylinder direct injection liquid-cooled diesel engine with a rated power of 86 hp (64 kW), and 1-speed or 2-speed hydrostatic transmission. The hydraulic system has a pump with a rated capacity of 29 gal/min (110 l/min). The system pressure is 3300 psi (228 bar). The Mustang 2099 is equipped with a radial-lift boom, 100HK drive chains, and 14x17.5 tires. The skid steer loader has a max lift height of 142" (3605 mm) to hinge pin and dump height of 109.5" (2780 mm). The rated operating capacity is 3400 lbs (1542 kg), and tipping load is 6800 lbs (3085 kg).

Engine Troubleshooting

Engine difficult to start or won't start
Air in the fuel pipes - Bleed the fuel pipes.
Fuel filter plugged - Service the filter.
Dirty or damaged injection nozzles - Clean or change injection nozzles.
Water in the fuel system - Change fuel and repair fuel system.
Valve clearance is not correct - Adjust to proper valve clearance.
Fuel injection pump is faulty - Replace injection pump or repair it.

Diesel starts and suddenly stops
Plugged air cleaner - Clean or change cleaner.
Clogged fuel filter - Change or clean the filter element.
Problems with fuel injection pump tightness - Inspect fuel injection pump for leaks.
Fuel injectors are dirty or defective - Replace fuel injectors.
Fuel injection pump is not operating properly - Repair or install new pump.

Engine stalls during operation
Engine is cold - Engine is not warmed up to the required temperature.
Fuel filter plugging - Change filter element.
Air trapped in fuel system - Bleed air.
Defective or clogged injection nozzle - Replace injection nozzles.
Incorrect adjustment of fuel injection pump timing - Set the fuel pump timing correctly.

Engine stalls at idle
Wrong adjustment of low idle speed - Correct low idle settings.
Fuel injection pump is damaged - Replacement or repair required.
Fuel injectors are faulty or clogged - Clean fuel injectors or change it.
Valve clearance is not correct - Adjust valve clearance.

Diesel engine loses power
Air filter is clogged - Install new air filter element.
Dirty or faulty injection nozzles - Service or change injection nozzles.
Fuel injection pressure is wrong - Adjust pressure to proper level.
Improper valve clearance - Check and adjust as required.
Low idle speed setting is incorrect - Adjustment required.
Fuel hoses or lines are clogged - Fuel hoses and lines must be clean.
Cylinder-head gasket is broken - Gasket should be replaced.
Piston rings are worn or damaged - Replace the piston rings as required.

Engine is overheated
Low coolant level - Add coolant fluid to cooling system and also check it for leaks.
Lack of engine oil - Fill the crankcase with engine oil.
Clogged radiator core or leaking radiator cap - Replace cap or clean radiator.
Loose or damaged fan belt - Fan belt must be replaced.
Engine overload - Reduce engine load.

Oil pressure is insufficient
Oil level is insufficient - Check and refill the oil.
Oil filter is dirty - Clean or replace engine oil filter element.
Oil grade or viscosity is incorrect - Use proper viscosity oil.
Incorrect crankshaft bearing oil clearance - Change bearings.
Oil pump failure - Repair or replace.

Abnormal engine noise or knocking
Engine oil level low - Fill the crankcase with engine oil.
Coolant temperature is low - Warm up the engine.
Timing of fuel injection pump is incorrect - Adjust fuel injection pump as required.
Improperly adjusted low idle speed - Test and adjust.
Clogged or defective injectors - Clean fuel injectors or change it.
Connecting rod is worn or not aligned - Need to change or align the connecting rod.
Pistons are worn or broken - Pistons need to be replaced.

Drive System Troubleshooting

Drive system doesn't operate in one direction or either direction
Insufficient hydraulic oil - Checking hydraulic oil level and add if necessary.
Damaged drive chain - Check drive chain and change defective components.
Relief valver is broken - Relief valve need to be replaced or repair.
Suction line or hydraulic filter is clogged - Clean suction line or replace hydraulic filter.
Faulty foot or hand controls - Repair or change.
Worn drive motor or pump - Check and repair if required.

Lack of power
Hydraulic oil filter is plugged - Change hydraulic filter.
Relief valve is worn or opened - Replace or close relief valve.
Defective or worn transmission parts - Inspect and replace faulty parts.
Input drive shaft malfunction - Rebuild or change the shaft.
Hydraulic system is leaking air - Bleed air from hydraulic system.

Drive system is overheated
Low hydraulic fluid level - Fill the system to proper hydraulic fluid level.
Dirty hydraulic fluid filter - Change hydraulic filter.
Defective relief valve - Repair or change.
Hydraulic motor or drive pump failure - Inspect and replace as necessary.
Oil cooler is clogged - Cooling fins should be cleaned.
Overloaded drive system - Reduce the load.

Excessive noise
Wrong oil viscosity - Drain and refill with proper oil.
Air in the hydraulic system - Bleed hydraulic system.
Damaged drive pump or hydraulic motor - Inspect and replace as necessary.
Mechanical parts of drive system are worn or damaged - Inspect drive system and replace faulty parts.

Hydraulics Troubleshooting

Hydraulic system is overheated
Incorrect hydraulic pressure setting - Set pressure correctly.
Misadjusted or defective main relief valve - Adjust or replace the relief valve.
Hydraulic fluid is contaminated - Hydraulic fluid change required.
Not enough hydraulic fluid in the system - Need to add fluid.
Defective hydraulic pump - Install new pump or repair it.

Lift arm cannot be raised or lowered
Lift controls malfunction - Replace or repair.
Damaged hydraulic oil pump - Replace or repair pump if necessary.
Defective hydraulic control valve - Repair or change hydraulic valve.
Damaged hydraulic cylinder - Repair or replace hydraulic cylinder.
Insufficient hydraulic oil - Checking hydraulic oil level and add if necessary.

Bucket fails to tilt
Bucket tilt controls malfunction - Repair or replace.
Damaged hydraulic oil pump - Repair or install new hydraulic pump.
Hydraulic control valve malfunction - Repair or change the valve.
Bucket cylinder failure - Replace or repair cylinder.
Low hydraulic oil level - Fill the system to proper hydraulic oil level.

Slow bucket or lift arm action
Worn hydraulic oil pump - Check pump flow and install new pump if necessary.
Leaking hydraulic cylinder - Cylinder seals need to be replaced.
Insufficient hydraulic fluid - Fill the system to proper hydraulic fluid level.
Defective or not adjusted hydraulic control valve - Repair or set correctly.
Hydraulic pressure loss - Adjust pressure as required.

Jerky operation of the bucket or boom
Hydraulic system is leaking air - Bleed air from hydraulic system.
Clogged hydraulic oil filter element - Service or change the hydraulic filter.
Contaminated hydraulic fluid - Hydraulic fluid change required.
Scored cylinder tube or rod - Replace worn component.

Hydraulic pump makes excessive noise
Hydraulic leaks or lack of oil - Repair hydraulic leaks or add oil as required.
Hydraulic filter is dirty - Change or clean oil filter.
Suction line clogging - Need to clean the suction line.
Air trapped in hydraulic pump - Bleed air from hydraulics.
Damaged pump parts - Rebuild or change hydraulic pump.

Electrical Troubleshooting

Battery will not charge
Corroded or loose electrical wire connections - Tighten or service connections.
Defective battery terminal clamps - Replace terminal clamps.
Battery failing - Install a new battery.
Damaged or loose belt - Replace belt or adjust belt tension.

Starter turning slow
Low battery capacity - Battery is drained, recharge it.
Battery is not holding charge - Service battery or change it.
Disconnected wires or corroded battery terminals - Connect cables correctly or replace terminals.

Starter will not work
Battery is discharged or worn - Battery needs to be recharged or replaced.
Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required.
Low battery capacity - Battery needs to be recharged.
Starter motor failure - Starter needs to be replaced.