John Deere 328E Skid Steer Troubleshooting

The John Deere 328E skid steer loader is powered by 186.3 cu.in (3.1L) Yanmar 4TNV94FHT four-cylinder turbocharged intercooled diesel engine with a rated power of 86 hp (64 kW) at 2500 rev/min. The John Deere 328E is equipped with a single-speed or two-speed transmission, integral automatic wet disc brakes, and 14x17.5 standard tires. The hydraulic system has a pump with fluid flow rate of 21 gpm (80 lpm). The hydraulic pressure is 3450 psi (238 bar). The skid steer loader has a rated operating capacity of 2800 lbs (1270 kg) and tipping load of 5600 lbs (2540 kg). The lift height is 126.6" (3215 mm) to hinge pin, and dump height is 101.1" (2565 mm).

Engine Troubleshooting

Engine starts up hard or will not start

Air in fuel system - Bleed fuel system.
Clogged fuel filter - Change filter element.
Fuel injection nozzles are faulty or clogged - Test injection nozzles and change if necessary.
Dirt or water in fuel system - Drain water or flush dirt from the system.
Improper valve clearance - Adjustment procedure required.
Faulty fuel injection pump - Rebuild or replace pump.

Engine starts but stalls suddenly

Plugged air cleaner - Install new air cleaner element.
Fuel filter element is dirty - Service or replace the filter.
Poor fuel injection pump tightness - Look for any leaks of fuel pump, tighten it fast.
Fuel injectors are faulty or clogged - Clean fuel injectors or change it.
Fuel injection pump is not working correctly - Rebuild or replace pump.

Engine stops unexpectedly during operation

Coolant temperature is low - Warm up the engine as required.
Fuel filter element is dirty - Service or replace the filter.
Air in fuel system - Bleed fuel system.
Fuel injection nozzles are faulty or clogged - Inspect nozzles and replace if necessary.
Wrong setting of fuel injection pump timing - Set the fuel pump timing correctly.

Engine stops while idle

Incorrectly adjusted low idle speed - Adjust low idling as recommended.
Fuel injection pump is broken - Rebuild or install a new injection pump.
Dirty or defective injectors - Replace fuel injectors.
Valve clearance is not correct - Adjust valve clearance.

Low engine power

Dirty air cleaner - Clean or replace element.
Faulty fuel injection nozzles - Clean or replace injection nozzles.
Insufficient fuel injection pressure - Adjust to proper pressure.
Incorrect valve clearance - Need to adjust valve clearance.
Incorrect low idle setting - Correct low idle settings.
Dirt in the fuel hoses or lines - Clean fuel system hoses and lines.
Leaking cylinder head gasket - Install a new gasket.
Worn or damaged piston rings - Replace the piston rings as required.

Engine overheating

Insufficient coolant - Fill the cooling system and check components for leaks or other faults.
Insufficient engine oil - Fill up the engine oil.
Clogged radiator fins or leaking radiator cap - Clean radiator or install new cap.
Broken or loose fan belt - If necessary, replace the belt.
Engine is under excessive load - Load reducing required.

Oil pressure is low

Low oil level - Add oil to the engine crankcase.
Oil filter element is dirty - Clean or change engine oil filter.
Wrong oil viscosity - Use correct viscosity oil.
Excessive oil clearance of crankshaft bearing - Install new bearings.
Oil pump is worn or damaged - Install a new pump.

Engine knocks or noises

Engine oil level is insufficient - Check oil level and add oil as required.
Low coolant temperature - Normalize the temperature by warming up the engine.
Improper fuel injection timing - Adjust as recommended.
Incorrect low idle speed adjustment - Correct the settings.
Fuel injectors are faulty or clogged - Replace or clean fuel injectors.
Connecting rod is not aligned or defective - Connecting rod needs to be replaced or aligned.
Pistons are scored or worn - Install new pistons.

Drive System Troubleshooting

Drive system won't operate in either direction

Hydraulic fluid level low - Add fluid as required.
Faulty drive chain - Check drive chain and change defective parts.
Input drive shaft is faulty - Service or change drive shaft.
Relief valve is defective - Change or repair relief valve.
Plugged suction line or hydraulic filter - Clean suction line or replace hydraulic filter.
Damaged or worn hand or foot controls - Replace or repair.
Damaged drive pump or motor - Inspect and replace as necessary.

Power is too low

Hydraulic oil filter is clogged - Check, clean, or change as necessary.
Relief valve is damaged or open - Replace or close relief valve.
Defective or worn transmission parts - Inspect and replace faulty parts.
Input drive shaft is damaged - Replace or service the drive shaft.
Air in hydraulic system - Bleed air from hydraulic system.

Drive system overheats

Insufficient hydraulic fluid - Fill the system to proper hydraulic fluid level.
Dirty hydraulic fluid filter - Replace or clean hydraulic filter.
Faulty relief valve - Relief valve need to be replaced or repair.
Defective drive pump or hydraulic motor - Inspect and replace as necessary.
Plugged hydraulic oil cooler - Clean cooling fins as required.
Transmission overloading - Reduce the load.

Drive system makes excessive noise

Improper oil viscosity - Drain and refill with correct oil.
Air in hydraulic system - Need to bleed air.
Hydraulic motor or drive pump is defective - Replace or repair faulty component.
Worn or damaged mechanical parts of drive system - Inspect the components and repair as needed.

Hydraulics Troubleshooting

Hydraulic system is overheated

Incorrect hydraulic pressure setting - Correct adjustment is required.
Unadjusted or defective main relief valve - Adjust or replace the relief valve.
Dirty hydraulic fluid - The fluid must be changed.
Not enough hydraulic fluid in the system - Add fluid to the hydraulic system.
Faulty hydraulic oil pump - Repair or replace pump if necessary.

Lift arm cannot be raised or lowered

Defective lift controls - Replace or repair.
Defective hydraulic pump - Change or repair hydraulic pump if required.
Hydraulic control valve malfunction - Replace or repair the valve.
Faulty hydraulic cylinder - Replace or repair boom cylinder.
Hydraulic oil level low - Check and refill the hydraulic oil.

Bucket does not tilt

Faulty bucket tilt controls - Replace or repair.
Hydraulic pump is broken - Replace or repair pump if necessary.
Hydraulic control valve failure - Repair or replace the valve.
Hydraulic bucket cylinder is broken - Repair or change cylinder.
Hydraulic fluid level low - Fill the system to proper hydraulic fluid level.

Slow bucket or lift arm action

Defective hydraulic pump - Test pump performance and replace pump if necessary.
Oil leaks from hydraulic cylinder - Correct leakage by changing the seals.
Low hydraulic fluid level - Add fluid as required.
Hydraulic control valve is faulty or out of adjustment - Set correctly or repair.
Hydraulic pressure is low - Adjust it correctly.

Bucket or boom movements are jerky

There is air in the hydraulic system - Bleed air from system.
Hydraulic oil filter element is dirty - Replace or clean the filter.
Hydraulic fluid is dirty - Hydraulic fluid change required.
Cylinder tube or rod is scored - Change damaged component.

Excessive hydraulic pump noise

Hydraulic leaks or low oil level - Repair hydraulic leaks or add oil as required.
Hydraulic filter is clogged - Change or clean oil filter.
Suction line clogging - Clean suction line as required.
Air trapped in hydraulic pump - Air bleeding is required.
Worn pump parts - Replace or rebuild the pump.

Electrical Troubleshooting

Battery won’t charge

Corroded or loose electrical wire connections - Tighten or service connections.
Defective battery terminal clamps - Terminal clamps need to be replaced.
Battery faulty cell - Use a new battery.
Belt is loose or defective - Adjust belt tension or install a new belt.

Starter turns slow

Battery capacity is low - Battery is drained, charge it.
Battery is draining quickly - Service battery or change it.
Battery cables are disconnected or terminals are faulty - Check wiring and clean or replace terminals.

Starter motor is not working

Battery is low or faulty - Recharge or replace battery.
Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required.
Low battery capacity - Recharge the battery.
Damaged starter motor - Repair or replace starter.