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John Deere 328 Troubleshooting

The John Deere 328 skid steer loader is powered by 186 cu.in (3L) JD PowerTech 5030TW 5-cylinder turbocharged diesel engine with a rated power of 76 hp (56.7 kW) at 2800 rpm. The John Deere 328 is equipped with single-speed or two-speed transmission, vertical-lift loader boom, 100 HD drive chains, hydraulic wet disc brakes, and 14x17.5 tires. The hydraulic system has a pump with fluid flow rate of 22 gpm (84 lpm). The hydraulic pressure is 3100 psi (214 bar). The skid steer has a rated operating capacity of 2750 lbs (1250 kg) and tipping load of 5500 lbs (2500 kg). The boom lifting force is 4800 lbs (2180 kg), and bucket breakout force is 10500 lbs (4767 kg).

Engine Troubleshooting

Diesel engine hard to start or doesn't start
Air in the fuel lines - Bleed the fuel lines.
Dirty fuel filter - Change the filter element.
Burnt or clogged injection nozzle - Clean or replace injection nozzles.
Water in the fuel system - Change fuel and repair fuel system.
Improper valve clearance - Correct valve clearance.
Faulty fuel injection pump - Install a new fuel pump or repair.

Engine starts and stops suddenly
Air cleaner is clogged - Service or replace air cleaner.
Dirty fuel filter - Change the filter element.
Fuel injection pump is leaking - Repair any leaks.
Dirty or defective injectors - Clean fuel injectors or change it.
Fuel injection pump malfunctioning - Install a new fuel pump or repair.

Engine shuts off suddenly during operation
Coolant temperature is low - Warm up engine as required.
Clogged fuel filter - Change filter element.
Air in fuel tank - Bleed fuel tank.
Fuel injection nozzles are faulty or clogged - Replace injection nozzles.
Wrong setting of fuel injection pump timing - Use the correct fuel injection pump timing adjustment.

Engine stalls when idle
Incorrectly set low idle speed - Correct the settings.
Fuel injection pump malfunctioning - Rebuild or replace pump.
Dirty or defective injectors - Clean fuel injectors or change it.
Excessive valve clearance - Adjust to proper valve clearance.

Diesel engine loses power
Clogged air cleaner - Install new air cleaner element.
Defective injection nozzle - Clean or change injection nozzles.
Fuel injection pressure is wrong - Adjust to proper pressure.
Valve out of adjustment - Adjust valve clearance.
Too low idle RPM - Adjust as required.
Clogged fuel hoses or lines - Service fuel hoses and lines.
Cylinder head gasket is damaged - Install a new gasket.
Piston rings are worn or defective - Piston rings need to be replaced.

Engine overheating
Insufficient coolant fluid - Add coolant fluid and inspect the cooling system for leaks.
Lack of engine oil - Check and refill engine oil.
Radiator core is dirty or radiator cap is damaged - Clean radiator or change cap.
Fan belt slipping or worn - Belt replacement is recommended.
Engine is overloaded - Reduce load on the engine.

Oil pressure too low
Low oil level - Fill crankcase to proper oil level.
Clogged oil filter - Change or clean engine oil filter element.
Incorrect oil viscosity - Use the specified type of engine oil.
Excessive oil clearance of crankshaft bearing - Bearing replacement required.
Oil pump is defective - Install a new pump.

Engine noises or knocks
Low engine oil level - Check and refill engine oil.
Engine is not preheated - Warm up the engine as required.
Improper fuel injection timing - Adjust fuel injection pump as required.
Incorrect low idle setting - Adjustment required.
Clogged or defective injectors - Clean fuel injectors or change it.
Connecting rod is not aligned or worn - Align or change connecting rod.
Pistons are broken or worn - Install new pistons.

Drive System Troubleshooting

Machine will not move in either direction or one direction
Insufficient hydraulic oil - Check and refill the hydraulic oil.
Worn drive chain - Check drive chain and change defective parts.
Input drive shaft is damaged - Drive shaft need to be replaced or repair.
Relief valve defective or worn - Repair or install a new relief valve.
Hydraulic filter or suction line is clogged - Service suction line or change hydraulic filter.
Faulty foot or hand controls - Replace or repair.
Drive motor or pump failure - Change or repair faulty component.

Reduced power
Clogged hydraulic oil filter - Check, clean, or change as necessary.
Relief valve is open or worn - Change or close relief valve.
Faulty or worn transmission components - Inspect and change defective parts.
Input drive shaft failure - Service or change faulty drive shaft.
Air leaks in hydraulic system - Air bleeding is required.

Drive system keeps overheating
Insufficient hydraulic fluid - Fill the system to proper hydraulic fluid level.
Plugged hydraulic fluid filter - Change hydraulic filter.
Relief valve worn or defective - Repair or install a new relief valve.
Hydraulic motor or drive pump failure - Replace or repair faulty component.
Dirty oil cooler - Cooling fins need to be cleaned.
Drive system overload - Reduce loading.

Excessive noise
Incorrect oil viscosity - Drain and refill with proper oil.
Hydraulic system is leaking air - Air bleeding is required.
Damaged drive pump or hydraulic motor - Inspect and replace as necessary.
Defective or worn mechanical components of drive system - Inspect the parts for worn or defect and repair as needed.

Hydraulics Troubleshooting

Hydraulic system overheated
Incorrect hydraulic pressure setting - Adjust pressure correctly.
Main relief valve improper adjustment or failure - Replace or set up the relief valve.
Dirty hydraulic fluid - Change hydraulic fluid.
Hydraulic fluid level is insufficient - Need to add fluid.
Hydraulic pump is worn - Install new pump or repair it.

Boom fails to lift or drop
Damaged lift controls - Repair or change.
Defective hydraulic pump - Repair or change pump if required.
Hydraulic control valve is defective - Repair or change the valve.
Damaged hydraulic cylinder - Install a new boom cylinder or repair it.
Hydraulic fluid is insufficient - Fill the system to proper hydraulic fluid level.

Bucket fails to tilt
Bucket controls are faulty - Inspect and repair if necessary.
Damaged hydraulic oil pump - Repair or install new hydraulic pump.
Hydraulic control valve failure - Repair or replace hydraulic valve.
Faulty hydraulic bucket cylinder - Repair or change cylinder.
Hydraulic oil level low - Fill the system to proper hydraulic oil level.

Boom or bucket is working slowly
Hydraulic pump is faulty - Check hydraulic pump flow and replace pump if necessary.
Hydraulic cylinder leaking - Install new cylinder seals.
Insufficient hydraulic oil - Need to add oil.
Hydraulic control valve is defective or set improper - Repair or set properly.
Hydraulic system loosing pressure - Adjust it correctly.

Bucket or boom is moving jerkily
Air in the hydraulic system - Bleed air from hydraulic system.
Clogged hydraulic oil filter element - Clean or change the filter.
Hydraulic fluid is dirty - Change hydraulic fluid.
Scored cylinder tube or rod - Change damaged component.

Hydraulic pump makes excessive noise
Hydraulic leaks or low oil level - Remedy hydraulic leakage or refill oil as necessary.
Plugged hydraulic filter - Clean or replace the filter.
Suction line is dirty - Service the suction line.
Pump sucks air - Need to bleed air.
Pump components are damaged - Rebuild or install new pump.

Electrical Troubleshooting

Battery does not charge
Electrical wire connections are corroded or loose - Service or tighten connections.
Battery terminal clamps are defective - Terminal clamps should be changed.
Battery is worn - Install a new battery.
Belt is worn or loose - Adjust belt tension or install a new belt.

Starter turns slowly
Low battery capacity - Recharge the battery.
Battery drains quickly - Battery needs to be serviced or replaced.
Disconnected cables or faulty battery terminals - Connect wires correctly or change terminals.

Starter motor won't turn
Battery is discharged or defective - Charge or change the battery.
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly.
Low battery power - Battery is drained, recharge it.
Starter motor failure - Starter should be replaced.