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| Home / Skid Steer Loaders / Case Skid Steer Loaders / Case SV250 |
Case SV250 Troubleshooting
The
Case SV250 skid steer loader is powered by 195 cu.in (3.2L) FPT F5C E5454
vertical four-cylinder turbocharged diesel engine with a rated power of 76 hp
(57 kW) at 2500 rpm. The Case SV250 is equipped with a vertical-lift loader
boom, single-speed or two-speed hydrostatic transmission, ASA 100 drive chains,
and 12.00x16.5 (Std) or 14.00x17.5 (Opt) tires. The hydraulic system has a pump with fluid
flow rate of 22.5 gpm (85 lpm) or 34.6 gpm (131 lpm). The loader has a boom
breakout force of 4800 lbs (2180 kg) and bucket breakout force of 7570 lbs (3440
kg). The rated operating capacity is 2500 lbs (1135 kg), and tipping load is
5000 lbs (2270 kg).
| Engine Troubleshooting |
Engine starts hard or won't start
Air in fuel system - Bleed fuel system.
Fuel filter plugging - Clean the filter element.
Burnt or clogged injection nozzle - Clean or replace injection nozzles.
Dirt or water in fuel system - Drain water or flush dirt from the system.
The valve clearance is incorrect - Adjust valve clearance.
Defective fuel injection pump - Replace or rebuild injection pump.
Diesel starts and suddenly stops
Clogged air cleaner - Service or replace air cleaner.
Fuel filter element clogging - Replace the filter element.
Poor fuel injection pump tightness - Look for any leaks of fuel pump, tighten it fast.
Fuel injectors are dirty or defective - Clean fuel injectors or change it.
Fuel injection pump is faulty - Rebuild or install a new injection pump.
Engine stops unexpectedly during operation
Engine is not fully warmed up - Warm up to required temperature.
Fuel filter element clogging - Replace the filter element.
Air in the fuel system - Air bleeding.
Damaged or dirty injection nozzles - Replace injection nozzles.
Improper fuel injection timing - Adjust fuel injection pump as required.
Engine stalls when idling
Wrong adjustment of low idle speed - Correct low idle adjustment.
Fuel injection pump malfunctioning - Repair or install new pump.
Clogged or defective injectors - Clean or replace fuel injectors.
The valve clearance is not adjusted - Adjust valve clearance according to specifications.
Low engine power
Dirty air cleaner - Service or replace air cleaner.
Clogged injection nozzle - Clean or replace injection nozzles.
Incorrect fuel injection pressure - Adjust to correct pressure.
Incorrect valve clearance - Correct valve clearance.
Improperly adjusted low idle speed - Correct low idle adjustment.
Fuel lines or hoses clogging - Clean fuel system lines and hoses.
Blown cylinder head gasket - Gasket should be replaced.
Piston rings are defective or leaking - Piston rings need to be replaced.
Engine overheated
Not enough coolant - Fill the cooling system and check components for leaks or other faults.
Not enough engine oil - Add oil to the engine crankcase.
Dirty radiator fins or faulty radiator cap - Replace cap or clean radiator.
Loose or defective fan belt - Change the fan belt.
Engine overload - Load reducing required.
Oil pressure is insufficient
Low oil level - Fill up the engine oil.
Engine oil filter is plugged - Replace or clean engine oil filter element.
Improper type of engine oil - Use proper viscosity oil.
Crankshaft bearing oil clearance is incorrect - Replace bearings.
Oil pump is worn or damaged - Check and replace if necessary.
Engine knocks or noises
Engine oil level is low - Add oil to the engine crankcase.
Engine is not fully warmed up - Warm up the engine.
Improper fuel injection timing - Use the correct fuel injection pump timing adjustment.
Low idle speed set incorrectly - Correct low idle adjustment.
Damaged or clogged injectors - Replace fuel injectors.
Connecting rod is worn or not aligned - Replace or align connecting rod.
Piston wear or scoring - Replace the pistons.
| Drive System Troubleshooting |
Machine will not move forward or backward
Insufficient hydraulic oil - Checking hydraulic oil level and add if necessary.
Worn drive chain - Check drive chain and change defective parts.
Relief valve defective or worn - Change or repair defective relief valve.
Suction line or hydraulic filter is clogged - Check, clean, or replace if required.
Hand or foot controls failure - Repair or change.
Defective drive pump or motor - Change or repair faulty component.
Power is too low
Hydraulic oil filter is plugged - Change or clean hydraulic filter.
Relief valve is defective or open - Change or close relief valve.
Faulty or damaged transmission components - Inspect and change faulty parts.
Defective input drive shaft - Rebuild or change the shaft.
Air trapped in hydraulic system - Bleed hydraulic system.
Drive system overheating
Hydraulic oil level is low - Checking hydraulic oil level and add if necessary.
Hydraulic fluid filter is clogged - Check, clean, or replace as required.
Relief valver is broken - Service or change relief valve.
Hydraulic motor or drive pump failure - Repair or replace faulty component.
Dirty oil cooler - Cooling fins should be cleaned.
Drive system overload - Reduce the load.
Drive system is noisy
Oil viscosity is incorrect - Use oil of correct viscosity.
Air leaks in hydraulic system - Air bleeding is required.
Damaged drive pump or hydraulic motor - Check and repair if required.
Worn or damaged mechanical components of drive system - Check the parts for defect or damage and change if required.
| Hydraulics Troubleshooting |
Hydraulic system overheating
Hydraulic pressure incorrectly adjusted - Correct adjustment is required.
Main relief valve malfunction or improper adjustment - Set up or change the relief valve.
Contaminated hydraulic oil - Change hydraulic oil.
Hydraulic oil level is low - Add oil to the hydraulic system.
Hydraulic pump is worn - Replace or repair pump if necessary.
Lift arm cannot be raised or lowered
Lift controls are damaged - Repair or replace.
Hydraulic pump not working - Replace or repair pump if necessary.
Hydraulic control valve failure - Install a new valve or repair it.
Damaged hydraulic cylinder - Repair or change hydraulic cylinder.
Insufficient hydraulic oil - Check and refill the hydraulic oil.
Bucket does not tilt
Bucket tilt controls malfunction - Repair or replace.
Defective hydraulic pump - Repair or replace pump if necessary.
Faulty hydraulic control valve - Replace or repair the valve.
Hydraulic bucket cylinder is broken - Change or repair cylinder.
Low hydraulic fluid level - Add fluid as required.
Slow boom or bucket operation
Hydraulic pump is faulty - Flow-rate pump and change pump if necessary.
Hydraulic cylinder oil leakage - Repair leak by replacing the seals.
Hydraulic oil level low - Checking hydraulic oil level and add if necessary.
Defective or not adjusted hydraulic control valve - Set correctly or repair.
Hydraulic pressure loss - Set pressure correctly.
Lift arm or bucket jerks when working
Air in hydraulic system - Air bleeding is required.
Dirty hydraulic oil filter - Clean or change the filter.
Hydraulic oil is dirty - Fill up with fresh hydraulic oil.
Scratched cylinder rod or tube - Change failed component.
Hydraulic pump makes excessive noise
Hydraulic leaks or low oil level - Add hydraulic oil or correct system leaks.
Plugged hydraulic filter - Service or change hydraulic filter.
Suction line clogging - Clean suction line as required.
Air enters the pump - Air bleeding is required.
Worn pump parts - Rebuild or replace hydraulic pump.
| Electrical Troubleshooting |
Battery is not charging
Loose or corroded wire connections - Service or tighten connections.
Battery terminal clamps are faulty - Terminal clamps need to be replaced.
Bad cell in battery - Use a new battery.
Belt is damaged or loose - Install a new belt or adjust belt tension.
Starter turns slowly
Low battery power - Charge the battery.
Battery won’t hold charge - Service charging system or change battery.
Disconnected wiring or bad battery terminals - Connect wires correctly or change terminals.
Starter will not crank
Battery is low or faulty - Charge or replace the battery.
Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required.
Low battery voltage - Battery is drained, recharge it.
Faulty starter motor - Starter should be replaced.
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| SKID STEER LOADERS SPECIFICATIONS |