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Home / Wheel Loaders / Case Wheel Loaders / Case W14

Case W14 Troubleshooting

The Case W14 wheel loader is powered by 336 cu.in (5.5L) Case 336BD 4-stroke 4-cylinder naturally aspirated liquid-cooled diesel engine with a rated power of 83 hp (62 kW) at 2200 rpm. The Case W14 is equipped with a four-speed powershift transmission, hydrostatic power steering system, hydraulic disc brakes, and 13.0x24 standard tires. The hydraulic system has a pump with fluid flow rate of 34 gpm (129 lpm). The hydraulic pressure is 2200 psi (152 bar). The wheel loader has a rated operating capacity of 5355 lbs (2430 kg) and tipping load of 10710 lbs (4860 kg). The max lift height is 134.1" (3405 mm) to hinge pin, and boom breakout force is 14020 lbs (6360 kg).

Engine Troubleshooting

Engine starts hard or won't start
Air in the fuel lines - Bleed the fuel lines.
Fuel filter plugging - Clean the filter element.
Clogged or defective injection nozzles - If necessary, replace with a new nozzle.
Water in the fuel system - Change fuel and repair fuel system.
Valve clearance is out of adjustment - Correct valve clearance needs to be set.
Damaged fuel injection pump - Replace injection pump or repair it.

Diesel starts but immediately stops
Plugged air cleaner - Clean or change.
Clogged fuel filter - Clean the filter or install new filter element.
Fuel injection pump leakage - Check the fuel injection pump for leaks and fix it.
Dirty or defective injectors - Clean or replace fuel injectors.
Fuel injection pump is not working correctly - Repair or replace injection pump.

Engine stops running suddenly
Engine not warmed up - Warm up to required temperature.
Fuel filter plugging - Change filter element.
Air in the fuel lines - Bleed the fuel lines.
Clogged injection nozzle - If necessary, replace with a new nozzle.
Improper setting of fuel injection pump timing - Adjust fuel injection pump as required.

Engine stops when idling
Low idle speed adjustment is incorrect - Need to adjust idle speed.
Fuel injection pump is faulty - Repair or install a new fuel pump.
Fuel injectors are dirty or defective - Clean fuel injectors or change it.
Valve clearance is out of adjustment - Correct valve clearance needs to be set.

Lack of engine power
Plugged air cleaner - Clean or replace air cleaner element.
Dirty or damaged injection nozzles - If necessary, replace with a new nozzle.
Incorrect fuel injection pressure - Test fuel injection pressure and adjust it correctly.
The valve clearance is incorrect - Correct valve clearance needs to be set.
Low idle speed setting is not correct - Adjustment required.
Fuel hoses or lines are clogged - Clean fuel system lines and hoses.
Cylinder head gasket is blown - Gasket should be replaced.
Worn or damaged piston rings - Piston rings need to be replaced.

Engine overheated
Lack of engine coolant - Fill radiator to proper level and check components for faults.
Engine oil insufficient - Fill up the engine oil.
Clogged radiator fins or damaged radiator cap - Replace cap or clean radiator.
Damaged or worn fan belt - If necessary, replace the belt.
Engine is under excessive load - Reduce load on the engine.

Oil pressure is insufficient
Low oil level - Check oil level and add oil as required.
Oil filter is dirty - Replace or clean engine oil filter element.
Incorrect oil viscosity - Use oil of correct viscosity.
Incorrect crankshaft bearing oil clearance - Install new bearings.
Oil pump failure - Install a new pump.

Abnormal engine knocking or noise
Not enough engine oil - Need to add engine oil.
Engine is cold - Warm up the engine.
Wrong setting of fuel injection pump timing - Set it up as required.
Wrong adjustment of low idle speed - Adjust low idle speed.
Dirty or defective injectors - Clean or replace fuel injectors.
Connecting rod is not aligned or worn - Alignment procedure or replacement is required.
Worn or scored pistons - Replace the pistons as required.

Transmission Troubleshooting

Low transmission fluid pressure
Insufficient transmission oil - Check and refill the transmission oil.
Transmission oil filter element clogging (if equipped) - Clean or replace the transmission filter.
Defective relief valve - Change the valve.

Excessive transmission noise
Transmission fluid insufficient - Add fluid to the transmission housing.
Transmission fluid is contaminated - Change the fluid.
Damaged gears or incorrect backlash - Install new gears and set backlash correctly.
Worn or broken bearings - Bearings need to be replaced.
Shift forks are bent or worn out - Shift forks need to be replaced.
Worn or damaged shaft splines - Change defective shaft.

Hard shifting
Rusty or worn gear shift linkage - Change or lubricate shift linkage.
Damaged or worn gear shift forks - Shift forks need to be replaced.
Gearshift mechanism malfunction - Identify and replace failed parts.
Worn or unadjusted clutch - Adjust correctly or replace.

External fluid leaks
Too much fluid in transmission - Excess fluid must be drained.
Seals or gaskets are broken - Replace worn seal or gaskets.

Hydraulics Troubleshooting

Hydraulic system has overheating
Hydraulic pressure is not correct - Correct adjustment is required.
Unadjusted or defective main relief valve - Adjust the valve or replace if necessary.
Hydraulic fluid is dirty - Hydraulic fluid change required.
Not enough hydraulic fluid in the system - Add fluid to the hydraulic system.
Faulty hydraulic oil pump - Repair or change pump if required.

Boom cannot be lowered or raised
Defective lift controls - Change or repair.
Hydraulic pump not working - Repair or change pump if required.
Hydraulic control valve malfunction - Replace or repair the valve.
Faulty hydraulic cylinder - Repair or replace hydraulic cylinder.
Insufficient hydraulic oil - Need to add oil.

Bucket can't tilt
Bucket tilt controls malfunction - Change or repair.
Hydraulic pump not working - Repair or replace pump if necessary.
Faulty hydraulic control valve - Install a new valve or repair it.
Bucket cylinder failure - Repair or install a new cylinder.
Insufficient hydraulic oil - Check and refill the hydraulic oil.

Slow bucket or lift arm action
Hydraulic pump is worn - Check pump flow and install new pump if necessary.
Leaking hydraulic cylinder - Repair leak by replacing the seals.
Hydraulic oil level low - Need to add oil.
Hydraulic control valve is not set properly or defective - Adjust correctly or repair.
Hydraulic system loosing pressure - Adjust pressure as required.

Bucket or boom is working jerkily
Hydraulic system is leaking air - Bleed air from system.
Dirty hydraulic oil filter - Clean or change the filter.
Hydraulic fluid contamination - Hydraulic fluid change required.
Scored cylinder tube or rod - Replace worn component.

Hydraulic pump is excessively noisy
Hydraulic leaks or low oil level - Correct hydraulic leaks or top up oil as needed.
Hydraulic filter is clogged - Clean or change the filter.
Clogged suction line - Need to service the suction line.
Pump is sucking air - Bleed air.
Worn pump parts - Change or rebuild pump.

Electrical Troubleshooting

Battery cannot be charged
Wiring connections are loose or corroded - Clean or tighten wiring connections.
Faulty battery terminal connectors - Install new terminal connectors.
Worn-out battery - Battery replacement required.
Damaged or loose belt - Need to adjust belt tension or replace belt.

Starter motor cranks slow
Low battery output voltage - Battery is drained, charge it.
Battery runs out quickly - Service or replace the battery.
Disconnected wires or corroded battery terminals - Connect cables properly or replace terminals.

Starter motor is not working
Battery is low or faulty - Change or recharge battery.
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly.
Low battery voltage - Recharge the battery.
Starter motor is faulty - Repair or change starter.

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WHEEL LOADERS SPECIFICATIONS

Wheel Loaders, Skid Steers, and Compact Track Loaders