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| Home / Compact Track Loaders / Bobcat Compact Track Loaders / Bobcat MT100 |
Bobcat MT100 Troubleshooting
The
Bobcat MT100 mini track loader driveline system components: Kubota D902-E4B-BC-1
3-cylinder indirect injection liquid-cooled diesel engine with a rated power of
24 hp (17.8 kW), and 1-speed hydro transmission. The hydraulic system has a pump
with a rated flow of 12 gpm (45.4 lpm). The system pressure is 2900 psi (200
bar). The Bobcat MT100 is equipped with a tilt steering, independent hydrostatic
brakes, and 7.1" (180 mm) or 9.8" (250 mm) rubber tracks. The loader has a
bucket breakout force of 1180 lbs (985 kg) and max lift height of 81" (2060 mm)
to hinge pin. The rated operating capacity is 1230 lbs (558 kg), and tipping
load is 2460 lbs (1116 kg).
| Engine Troubleshooting |
Engine hard to start or will not start
Air in fuel tank - Bleed fuel tank.
Fuel filter plugged - Replace the filter element.
Fuel injection nozzles are damaged or dirty - Clean or change injection nozzles.
Dirt or water in fuel system - Drain water or flush dirt from the system.
Excessive valve clearance - Adjust valve clearance.
Fuel injection pump is damaged - Change pump or rebuild it.
Diesel starts and stops
Dirty air filter - Install new air filter element.
Fuel filter plugging - Install new filter element.
Fuel injection pump has loose connections - Tighten the connections.
Clogged or defective injectors - Clean fuel injectors or change it.
Damaged fuel injection pump - Replace or repair injection pump.
Engine shuts off suddenly while running
Engine is cold - Engine is not warmed up to the required temperature.
Clogged fuel filter - Replace the filter element.
Air in fuel tank - Bleed fuel tank.
Faulty fuel injection nozzles - Test injection nozzles and change if necessary.
Timing of fuel injection pump is incorrect - Set it up as required.
Engine stops at low idle speed
Low idle speed adjustment is incorrect - Correct low idle adjustment.
Faulty fuel injection pump - Replace or repair injection pump.
Defective fuel injectors - Replace or clean fuel injectors.
Valve clearance is out of adjustment - Adjustment procedure required.
Diesel engine loses power
Dirty air cleaner - Clean or replace air cleaner element.
Dirty or damaged injection nozzles - Replace injection nozzles.
Fuel injection pressure is wrong - Adjust to proper pressure.
Valve out of adjustment - Adjust valve clearance according to specifications.
Low idle speed setting is not correct - Correct low idle adjustment.
Fuel hoses or lines clogging - Fuel hoses and lines must be clean.
Damaged cylinder-head gasket - Cylinder-head gasket replacement required.
Damaged or leaking piston rings - Piston rings replacement required.
Engine overheating
Engine coolant is insufficient - Fill the cooling system and check components for leaks or other faults.
Engine oil level low - Check and refill engine oil.
Clogged radiator core or leaking radiator cap - Clean radiator or install new cap.
Excessive wear of the fan belt - Change the fan belt.
Diesel engine is overloaded - Load reducing required.
Oil pressure is insufficient
Not enough oil in the engine - Add oil as required.
Oil filter clogged - Clean or change engine oil filter.
Wrong oil viscosity - Fill up with the correct oil viscosity.
Excessive oil clearance of crankshaft bearing - Install new bearings.
Oil pump is worn or damaged - Inspect and change as required.
Engine knocks or noises
Lack of engine oil - Check and refill engine oil.
Engine is not preheated - Warm up the engine.
Fuel injection pump timing is not adjusted - Adjust as recommended.
Low idle speed set incorrectly - Adjust low idle speed.
Dirty or defective injectors - Replace or clean fuel injectors.
Connecting rod is worn or not aligned - Need to change or align the connecting rod.
Worn or broken pistons - Pistons replacement required.
| Drive System Troubleshooting |
Machine is not moving in one direction or either direction
Hydraulic oil is insufficient - Check and refill the hydraulic oil.
Track mechanism is jammed or defective - Remove jamming or repair tracks.
Faulty input drive shaft - Replace drive shaft.
Relief valve is broken - Repair or install a new relief valve.
Dirty suction line or hydraulic filter - Check, clean, or replace if required.
Faulty foot or hand controls - Change or repair.
Defective drive pump or motor - Inspect and replace as necessary.
Machine does not drive straight or drives jerky
Track mechanism is jammed or defective - Repair or remove jamming.
Tracks are improperly tensioned or faulty - Adjust track tension properly or repair tracks.
Foreign objects, debris, or dirt stuck in track frame - Remove debris or foreign objects and clean track frame.
Lack of power
Hydraulic oil filter is dirty - Check, clean, or change as necessary.
Relief valve is worn or opened - Close or change relief valve.
Transmission components are damaged or faulty - Check and replace faulty components.
Input drive shaft is damaged - Repair or replace faulty drive shaft.
Air trapped in hydraulic system - Bleed hydraulic system.
Overheated drive system
Low hydraulic oil level - Need to add oil.
Clogged hydraulic fluid filter - Change hydraulic filter.
Worn or damaged relief valve - Change or repair relief valve.
Defective drive pump or hydraulic motor - Inspect and replace as necessary.
Dirty oil cooler - Clean the cooling fins.
Drive system overload - Reduce loading.
Excessive noise
Oil viscosity is incorrect - Use proper oil viscosity.
Air in the hydraulic system - Air bleeding is required.
Hydraulic motor or drive pump is defective - Repair or replace faulty component.
Defective or worn mechanical parts of drive system - Inspect the parts for defect or damage and repair as required.
| Hydraulics Troubleshooting |
Hydraulic system is overheated
Hydraulic pressure incorrectly adjusted - Adjust it correctly.
Main relief valve malfunction or improper adjustment - Set up or change the relief valve.
Hydraulic oil contamination - Change hydraulic oil.
Hydraulic fluid level is low - Add fluid to the hydraulic system.
Worn hydraulic oil pump - Replace or repair pump if necessary.
Boom cannot be lowered or raised
Lift controls failure - Check and repair as required.
Hydraulic pump is broken - Repair or change pump if required.
Hydraulic control valve failure - Install a new valve or repair it.
Hydraulic cylinder not working - Repair or change hydraulic cylinder.
Insufficient hydraulic oil - Need to add oil.
Bucket fails to tilt
Bucket tilt controls are defective - Change or repair.
Hydraulic pump malfunction - Replace or repair pump if necessary.
Defective hydraulic control valve - Install a new hydraulic valve or repair it.
Bucket cylinder is faulty - Replace or repair cylinder.
Hydraulic oil is insufficient - Check and refill the hydraulic oil.
Slow bucket or lift arm action
Hydraulic pump is faulty - Test the pump flow rate and change pump if required.
Hydraulic cylinder leaking - Install new cylinder 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 - Hydraulic pressure must be set correctly.
Lift arm or bucket is moving jerkily
There is air in the hydraulic system - Bleed air from system.
Dirty hydraulic oil filter - Service or change the hydraulic filter.
Dirty hydraulic oil - Change hydraulic oil.
Cylinder rod or tube is scratched - Change failed component.
Excessive hydraulic pump noise
Lack of oil or hydraulic leakage - Top up hydraulic oil or remedy leakage in system.
Hydraulic filter clogging - Service or replace hydraulic filter.
Suction line clogging - Clean suction line as required.
Pump sucks air - Need to bleed air.
Damaged pump parts - Change or rebuild pump.
| Electrical Troubleshooting |
Battery is not charging
Wiring connections are corroded or loose - Service or tighten connections.
Battery terminal connectors are defective - Replace terminal connectors.
Battery failing - Replace the battery.
Belt is worn or loose - Adjust belt tension or change the belt.
Starter turns slow
Low battery voltage - Battery is drained, recharge it.
Battery is not holding charge - Service or change the battery.
Disconnected wires or corroded battery terminals - Check wiring and clean or replace terminals.
Starter motor won't turn
Battery is discharged or defective - Charge or change the battery.
Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required.
Low battery power - Recharge the battery.
Starter motor failure - Repair or replace starter.
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| COMPACT TRACK LOADERS SPECIFICATIONS |