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John Deere 320E Troubleshooting
The
John Deere 320E skid steer loader driveline system components: Yanmar 4TNV98C
4-cycle vertical 4-cylinder liquid-cooled diesel engine with a rated power of 66
hp (49.5 kW), and 1-speed or 2-speed hydrostatic transmission. The hydraulic
system has a pump with a rated capacity of 20 gal/min (75.8 l/min) or 28 gal/min
(106.1 l/min). The John Deere 320E is equipped with vertical-lift loader boom,
80HD drive chains, and 10.00x16.5 tires. The loader has a boom breakout force of
3500 lbs (1590 kg) and bucket breakout force of 6000 lbs (2725 kg). The rated
operating capacity is 2190 lbs (995 kg), and tipping load is 4380 lbs (1990 kg).
| Engine Troubleshooting |
Engine starts hard or won't start
Air in the fuel system - Air bleeding.
Fuel filter plugging - Service the filter.
Fuel injection nozzles are dirty or defective - Check and replace nozzles if required.
Water or dirt in fuel system - Drain, flush, and service the 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 stalls suddenly
Air cleaner is dirty - Install new air cleaner element.
Dirty fuel filter - Clean 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 - Change or clean fuel injectors.
Defective fuel injection pump - Replacement or repair required.
Engine stops running suddenly
Engine has not warmed up to the recommended temperature - Warm up the engine.
Clogged fuel filter - Clean or replace the filter.
There is air in the fuel system - Bleed the system.
Faulty fuel injection nozzles - If necessary, replace with a new nozzle.
Improper fuel injection timing - Set it up as required.
Engine stalling at idle
Too low idle RPM - Test and adjust.
Fuel injection pump damage - Replace or rebuild injection pump.
Dirty or defective injectors - Replace fuel injectors.
The valve clearance is not adjusted - Adjustment procedure required.
Diesel engine loses power
Air filter is clogged - Clean or replace element.
Faulty fuel injection nozzles - If necessary, replace with a new nozzle.
Fuel injection pressure is incorrect - Correct the pressure settings.
The valve clearance is incorrect - Adjustment procedure required.
Improperly adjusted low idle speed - Need to adjust idle speed.
Dirty fuel hoses or lines - Fuel hoses and lines must be clean.
Blown cylinder head gasket - Gasket should be replaced.
Damaged or leaking piston rings - Replace piston rings.
Engine overheated
Coolant level is low - Add coolant fluid to cooling system and also check it for leaks.
Engine oil level low - Fill up the oil to required level.
Clogged radiator fins or damaged radiator cap - Install new cap or clean radiator.
Loose or defective fan belt - Belt change is required.
Diesel engine is overloaded - Load reducing is recommended.
Oil pressure is insufficient
Oil level is insufficient - Check and refill the oil.
Clogged oil filter - Clean or change engine oil filter.
Wrong oil viscosity - Fill up with the correct oil viscosity.
Crankshaft bearing has excessive oil clearance - Bearing needs to be changed.
Oil pump failure - Repair or change.
Abnormal engine noise or knocking
Engine oil level low - Checking oil level and add if necessary.
Coolant temperature is low - Engine is not warmed up to the required temperature.
Fuel injection pump timing is wrong - Adjust fuel injection pump as required.
Incorrect low idle speed adjustment - Adjust low idle speed.
Damaged or clogged injectors - Clean fuel injectors or change it.
Connecting rod is misaligned or defective - Need to replace or align the connecting rod.
Piston wear or scoring - Install new pistons.
| Drive System Troubleshooting |
Drive system doesn't operate in one direction or either direction
Low hydraulic fluid level - Fill up the hydraulic fluid.
Damaged drive chain - Check drive chain and change faulty components.
Relief valve worn or defective - Repair or change.
Suction line or hydraulic filter is plugged - Check, clean, or replace if required.
Damaged or worn hand or foot controls - Check and repair as required.
Drive pump or motor malfunction - Inspect and replace as necessary.
Reduced power
Hydraulic oil filter is dirty - Change or service hydraulic filter.
Relief valve is defective or open - Change or close relief valve.
Faulty or worn transmission components - Check and replace faulty components.
Input drive shaft malfunction - Faulty drive shaft need to be replaced or repair.
Air trapped in hydraulic system - Bleed air from hydraulic system.
Overheated drive system
Insufficient hydraulic oil - Checking hydraulic oil level and add if necessary.
Clogged hydraulic fluid filter - Change hydraulic filter.
Faulty relief valve - Change or repair relief valve.
Worn hydraulic motor or drive pump - Inspect and change as required.
Dirty oil cooler - Clean cooling fins as required.
Transmission overloading - Load should be reduced.
Drive system makes excessive noise
Oil viscosity is wrong - Use correct oil viscosity.
Air in the hydraulic system - Bleed hydraulic system.
Hydraulic motor or drive pump failure - Repair or replace faulty component.
Worn or damaged mechanical parts of drive system - Check drive system and change faulty parts.
| Hydraulics Troubleshooting |
Hydraulic system overheating
Incorrect hydraulic pressure setting - Hydraulic pressure must be set correctly.
Main relief valve malfunction or improper adjustment - Adjust or change relief valve.
Dirty hydraulic fluid - The fluid must be changed.
Lack of hydraulic fluid - Check and refill the hydraulic fluid.
Hydraulic pump is faulty - Install new pump or repair it.
Boom fails to lift or drop
Faulty lift controls - Repair or replace.
Hydraulic pump malfunction - Install new pump or repair it.
Hydraulic control valve failure - Replace or repair the valve.
Hydraulic cylinder not working - Change or repair lift cylinder.
Low hydraulic oil level - Checking hydraulic oil level and add if necessary.
Bucket won't move
Bucket tilt controls are damaged - Repair or replace.
Defective hydraulic pump - Change or repair hydraulic pump if required.
Hydraulic control valve failure - Repair or replace hydraulic valve.
Hydraulic bucket cylinder not working - Repair or replace cylinder.
Insufficient hydraulic fluid - Add fluid as required.
Bucket or lift arm moves slowly
Faulty hydraulic oil pump - Test the pump performance and change pump if required.
Leaking hydraulic cylinder - Install new cylinder seals.
Hydraulic oil level low - Fill the system to proper hydraulic oil level.
Hydraulic control valve is defective or set improper - Set properly or repair.
Hydraulic pressure has dropped - Adjust pressure as required.
Bucket or boom is jerky
Air in hydraulic system - Air bleeding is required.
Dirty hydraulic oil filter - Change or clean oil filter.
Hydraulic fluid contamination - Hydraulic fluid change required.
Scratched cylinder rod or tube - Change worn component.
Hydraulic pump is noisy
Insufficient oil level or leaking hydraulic system - Top up hydraulic oil or remedy leakage in system.
Dirty hydraulic filter - Clean or replace the filter.
Plugged suction line - Service the suction line.
Pump is sucking air - Need to bleed air.
Damaged pump parts - Rebuild or install new pump.
| Electrical Troubleshooting |
Battery does not charge
Wiring connections are loose or corroded - Tighten or clean electrical wiring connections.
Defective battery terminal clamps - Terminal clamps should be changed.
Battery faulty cell - Battery replacement required.
Loose or defective belt - Adjust belt tension or replace belt.
Starter turns slowly
Low battery power - Battery is drained, recharge it.
Battery will not hold charge - Battery needs to be serviced or replaced.
Disconnected wiring or bad battery terminals - Connect wires correctly or change terminals.
Starter motor won't turn
Battery is drained or defective - Recharge or replace battery.
Wiring harness is disconnected or improperly connected - Check wiring harness and connect as required.
Low battery voltage - Battery is drained, charge it.
Faulty starter motor - Starter should be replaced.
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| SKID STEER LOADERS SPECIFICATIONS |