____________________________________________________________________________________
| Home / Skid Steer Loaders / Bobcat Skid Steer Loaders / Bobcat A220 |
Bobcat A220 Troubleshooting
The
Bobcat A220 AWS skid steer loader is powered by 178 cu.in (2.9L) Deutz BF4M1011F
4-cylinder turbocharged liquid-cooled diesel engine with a rated power of 73.5
hp (54.8 kW) at 2350 rpm. The Bobcat A220 all wheel steer loader is equipped
with a radial-lift loader boom, one-speed or two-speed hydro transmission,
100HSOC drive chains, and 12.00x16.5 standard tires. The hydraulic system has a
pump with fluid flow rate of 20 gpm (75.8 lpm) or 30 gpm (113.6 lpm). The loader
has a rated operating capacity of 2200 lbs (998 kg) and tipping load of 4400 lbs
(2000 kg). The lift height is 121 inches (3075 mm) to hinge pin, and dump height
is 91.5 inches (2325 mm).
| Engine Troubleshooting |
Engine difficult to start or won't start
Air in the fuel pipes - Bleed the fuel pipes.
Fuel filter element is dirty - Clean the filter or install new filter element.
Clogged or burnt injection nozzle - Check injection nozzles and replace if required.
Water in the fuel system - Change fuel and repair fuel system.
Valve clearance is wrong - Adjust valve clearance according to specifications.
Fuel injection pump is not working correctly - Change or repair the pump.
Engine starts but stops suddenly
Dirty air cleaner - Clean or replace air cleaner element.
Fuel filter element clogging - Change the filter element.
Fuel injection pump is leaking - Repair any leaks.
Dirty or defective injectors - Replace or clean fuel injectors.
Fuel injection pump failure - Install a new fuel pump or repair.
Diesel shuts off while driving
Low coolant temperature - Warm up the engine.
Fuel filter element is dirty - Change the filter element.
There is air in the fuel system - Bleed the system.
Clogged injection nozzle - Replace injection nozzles.
Wrong setting of fuel injection pump timing - Check the fuel injection pump timing adjustment.
Engine stalls at idle
Too low idle RPM - Normalize low idle speed.
Fuel injection pump is faulty - Change pump or rebuild it.
Clogged or defective injectors - Inspect fuel injectors and change as required.
Valve clearance is wrong - Check and adjust.
Low engine power
Air filter is dirty - Install new air filter element.
Clogged injection nozzle - Inspect nozzles and replace if necessary.
Insufficient fuel injection pressure - Test fuel injection pressure and adjust it correctly.
Valve out of adjustment - Check and adjust as required.
Low idle speed set incorrectly - Adjust low idle speed.
Fuel lines or hoses clogging - Clean fuel hoses and lines.
Cylinder-head gasket is leaking - Install a new gasket.
Piston rings are damaged or leaking - Install new piston rings.
Engine is overheated
Lack of engine coolant - Top up coolant fluid and check system for leaks.
Lack of engine oil - Fill up the oil to required level.
Defective radiator cap or clogged radiator fins - Clean radiator or replace cap.
Fan belt is worn or faulty - Replace the fan belt.
Engine overloaded - Reduce load on the engine.
Oil pressure is low
Not enough oil in the engine - Fill crankcase to proper oil level.
Clogged oil filter - Replace or clean engine oil filter element.
Wrong oil viscosity - Use oil of correct viscosity.
Excessive oil clearance of crankshaft bearing - Bearing needs to be changed.
Worn oil pump - Repair or change.
Abnormal engine noise or knocking
Not enough engine oil - Fill up the oil to required level.
Engine is cold - Warm up to required temperature.
Wrong setting of fuel injection pump timing - Set up as recommended.
Low idle speed setting is incorrect - Adjust as required.
Damaged or clogged injectors - Change or clean fuel injectors.
Connecting rod failure or misalignment - Replace or align connecting rod.
Worn or scored pistons - Replace the pistons as required.
| Drive System Troubleshooting |
Machine will not move forward or backward
Hydraulic fluid level low - Add fluid as required.
Drive chain failure - Check drive chain and change defective parts.
Worn or defective relief valve - Rebuild or install a new relief valve.
Clogged hydraulic filter or suction line - Service suction line or replace hydraulic filter.
Hand or foot controls malfunction - Repair or change.
Drive pump or motor malfunction - Check and repair if required.
Loss of power
Clogged hydraulic oil filter - Replace hydraulic filter.
Opened or worn relief valve - Replace or close relief valve.
Transmission parts are damaged or faulty - Inspect and replace defective parts.
Input drive shaft malfunction - Change or repair faulty drive shaft.
Air leaks in hydraulic system - Bleed air from system.
Drive system overheating
Insufficient hydraulic fluid - Check and refill the hydraulic fluid.
Hydraulic fluid filter is plugged - Check, clean, or change as necessary.
Defective relief valve - Change or repair relief valve.
Hydraulic motor or drive pump is worn - Inspect and replace as necessary.
Dirty oil cooler - Cooling fins should be cleaned.
Drive system overloaded continuously - Reduce loading.
Excessive noise
Oil viscosity is too heavy - Use oil of proper viscosity.
Air in hydraulic system - Bleed air from hydraulic system.
Drive pump or hydraulic motor is damaged - Repair or change faulty component.
Defective or worn mechanical components of drive system - Check drive system and change faulty components.
| Hydraulics Troubleshooting |
Hydraulic system has overheating
Hydraulic pressure is incorrect - Correct adjustment is required.
Main relief valve malfunction or improper adjustment - Adjust or replace the relief valve.
Hydraulic fluid is dirty - Fill up with fresh hydraulic fluid.
Hydraulic fluid level is insufficient - Fill the hydraulic system with oil.
Defective hydraulic pump - Replace or repair pump if necessary.
Boom can't lift or drop
Lift controls malfunction - Replace or repair.
Damaged hydraulic oil pump - Replace or repair pump if necessary.
Hydraulic control valve failure - Change or repair hydraulic valve.
Hydraulic cylinder malfunction - Change or repair lift cylinder.
Insufficient hydraulic fluid - Add fluid as required.
Bucket tilt does not work
Bucket tilt controls malfunction - Check and repair as required.
Hydraulic pump is broken - Repair or replace pump if necessary.
Faulty hydraulic control valve - Repair or change the valve.
Faulty hydraulic bucket cylinder - Install a new cylinder or repair it.
Hydraulic fluid is insufficient - Checking hydraulic fluid level and add if necessary.
Bucket or lift arm functions slowly
Hydraulic pump is faulty - Test pump flow rate and replace pump if required.
Hydraulic cylinder leaking - Replace cylinder piston seals.
Insufficient hydraulic oil - Checking hydraulic oil level and add if necessary.
Defective or not adjusted hydraulic control valve - Repair or adjust properly.
Hydraulic system loosing pressure - Correct setting is required.
Lift arm or bucket is moving jerkily
Hydraulic system is leaking air - Bleed air from hydraulic system.
Clogged hydraulic oil filter element - Service or replace the hydraulic filter.
Contaminated hydraulic fluid - Change hydraulic fluid.
Scratched cylinder rod or tube - Replace defective component.
Hydraulic pump is excessively noisy
Hydraulic leakage or low oil level - Refill hydraulic oil or repair leaks in system.
Hydraulic filter clogging - Replace or clean the filter.
Suction line clogging - Need to clean the suction line.
Air trapped in hydraulic pump - Need to bleed air.
Pump components are worn out - Rebuild or replace hydraulic pump.
| Electrical Troubleshooting |
Battery won’t charge
Corroded or loose electrical wire connections - Service or tighten connections.
Defective battery terminal connectors - Install new terminal connectors.
Faulty cell in battery - Battery replacement required.
Belt is damaged or loose - Belt needs to be adjusted or replaced.
Starter turning slow
Low battery capacity - Recharge the battery.
Battery drains quickly - Battery needs service or replacement.
Disconnected cables or faulty battery terminals - Connect cables correctly or replace terminals.
Starter motor won't turn
Battery is low or faulty - Recharge or change battery.
Battery cables are disconnected or improperly connected - Inspect cables and connect properly.
Low battery output voltage - Battery is drained, charge it.
Damaged starter motor - Repair or replace starter.
____________________________________________________________________________________
____________________________________________________________________________________
| SKID STEER LOADERS SPECIFICATIONS |