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John Deere 315 Troubleshooting
The
John Deere 315 skid steer loader driveline system components: John Deere
PowerTech 4024T vertical four-cylinder turbocharged diesel engine with a rated
power of 45 hp (33.5 kW), and single-speed hydrostatic transmission. The
hydraulic system has a pump with a rated capacity of 16 gal/min (60.6 l/min).
The system relief pressure is 3450 psi (238 bar). The John Deere 315 is equipped
with radial-lift loader boom, 80HZ drive chains, and 10x16.5 or 7x15 tires. The
loader has a boom breakout force of 3900 lbs (1770 kg) and bucket breakout force
of 3300 lbs (1500 kg). The rated operating capacity is 1500 lbs (680 kg), and
tipping load is 3000 lbs (1360 kg).
| Engine Troubleshooting |
Engine starts up hard or doesn't start
Air in fuel tank - Bleed fuel tank.
Dirty fuel filter - Replace the filter element.
Fuel injection nozzles are dirty or defective - Clean or change injection nozzles.
Dirt or water in fuel system - Drain water or flush dirt from the system.
Valve clearance is out of adjustment - Adjust valve clearance.
Fuel injection pump is not working correctly - Rebuild or change fuel pump.
Diesel starts but then stops
Plugged air cleaner - Clean or change.
Fuel filter plugged - Clean the filter or install new filter element.
Fuel injection pump has loose connections - Tighten the connections.
Defective or clogged fuel injectors - Test and replace fuel injectors if necessary.
Fuel injection pump malfunctioning - Repair or replace injection pump.
Engine shuts off suddenly while running
Low coolant temperature - Warm up to required temperature.
Fuel filter element is clogged - Replace filter element.
Air in the fuel pipes - Bleed the fuel pipes.
Fuel injection nozzles are dirty or defective - If necessary, replace with a new nozzle.
Wrong setting of fuel injection pump timing - Set it up as required.
Engine stalls when idling
Low idle speed adjustment is incorrect - Adjustment required.
Fuel injection pump is not operating properly - Repair or install a new fuel pump.
Fuel injectors are dirty or defective - Test and replace fuel injectors if necessary.
Excessive valve clearance - Adjust valve clearance.
Engine power loss
Plugged air filter - Clean or change filter.
Faulty fuel injection nozzles - Change fuel injection nozzles.
Uneven fuel injection pressure - Adjust to proper pressure.
Incorrect valve clearance - Adjust to proper valve clearance.
Incorrectly set low idle speed - Correct the settings.
Clogged fuel lines or hoses - Service fuel hoses and lines.
Blown cylinder head gasket - Replace the gasket as required.
Piston rings are worn or damaged - Piston rings replacement required.
Engine overheats
Lack of engine coolant - Top up coolant fluid and check system for leaks.
Lack of engine oil - Checking oil level and add if necessary.
Radiator fins are clogged or radiator cap is faulty - Clean radiator or replace cap.
Fan belt is worn or faulty - Change as required.
Diesel engine overloaded - Reduce engine load.
Insufficient oil pressure
Not enough oil in the engine - Need to add oil.
Oil filter is clogged - Replace or service engine oil filter.
Oil grade or viscosity is wrong - Drain crankcase and refill with correct oil.
Incorrect crankshaft bearing oil clearance - Bearing needs to be changed.
Oil pump malfunction - Check and replace if necessary.
Engine noises or knocks
Insufficient engine oil - Checking oil level and add if necessary.
Engine is cold - Warm up to required temperature.
Improper fuel injection timing - Check the fuel injection pump timing adjustment.
Incorrect low idle setting - Correct low idle adjustment.
Defective fuel injectors - Test and replace fuel injectors if necessary.
Misaligned or defective connecting rod - Connecting rod needs to be aligned or changed.
Piston wear or scoring - Replace the pistons.
| Drive System Troubleshooting |
Machine does not move forward or backward
Insufficient hydraulic fluid - Checking hydraulic fluid level and add if necessary.
Drive chain is worn - Check drive chain and change faulty parts.
Relief valve is damaged - Repair or replace.
Suction line or hydraulic filter is clogged - Replace hydraulic filter or clean suction line.
Foot or hand controls are faulty - Repair or change.
Drive pump or motor malfunction - Replace or repair faulty component.
Power is too low
Dirty hydraulic oil filter - Check, clean, or change as necessary.
Worn or open relief valve - Change or close relief valve.
Worn or faulty transmission components - Check and replace faulty components.
Damaged input drive shaft - Repair or replace faulty drive shaft.
Hydraulic system is leaking air - Bleed air from system.
Drive system overheats
Hydraulic fluid level low - Checking hydraulic fluid level and add if necessary.
Clogged hydraulic fluid filter - Change hydraulic filter.
Worn or damaged relief valve - Repair or change.
Drive pump or hydraulic motor malfunction - Repair or change faulty component.
Plugged hydraulic oil cooler - Clean the cooling fins.
Drive system is overloaded - Reduce the load.
Drive system is noisy
Improper oil viscosity - Use oil of proper viscosity.
Air in hydraulic system - Need to bleed air.
Drive pump or hydraulic motor is damaged - Check and repair if required.
Worn or damaged mechanical components of drive system - Check drive system and change faulty parts.
| Hydraulics Troubleshooting |
Hydraulic system is overheated
Hydraulic pressure incorrectly adjusted - Adjust it correctly.
Faulty or improperly adjusted main relief valve - Adjust or change relief valve.
Hydraulic oil is contaminated - The oil must be changed.
Lack of hydraulic oil - Fill the hydraulic system with oil.
Defective hydraulic pump - Change or repair hydraulic pump if required.
Boom does not raise or lower
Lift controls are faulty - Change or repair.
Hydraulic pump not working - Repair or change pump if required.
Defective hydraulic control valve - Install a new valve or repair it.
Hydraulic cylinder malfunction - Repair or change hydraulic cylinder.
Hydraulic fluid is insufficient - Fill the system to proper hydraulic fluid level.
Bucket tilt does not work
Bucket tilt controls malfunction - Check and repair as required.
Hydraulic pump not working - Repair or replace pump if necessary.
Defective hydraulic control valve - Install a new hydraulic valve or repair it.
Hydraulic bucket cylinder not working - Install a new cylinder or repair it.
Insufficient hydraulic fluid - Add fluid as required.
Boom or bucket moves slowly
Faulty hydraulic oil pump - Test the pump flow rate and install new pump if required.
Leaking hydraulic cylinder - Replace cylinder piston seals.
Hydraulic fluid is insufficient - Checking hydraulic fluid level and add if necessary.
Hydraulic control valve is faulty or out of adjustment - Repair or set properly.
Hydraulic pressure loss - Correct setting is required.
Lift arm or bucket is jerky
Hydraulic system is leaking air - Bleed air from system.
Hydraulic oil filter clogging - Clean or replace the filter.
Hydraulic oil is contaminated - Hydraulic oil change required.
Scored cylinder tube or rod - Replace damaged component.
Hydraulic pump is excessively noisy
Low oil level or hydraulic leaks - Top up hydraulic oil or remedy leakage in system.
Hydraulic filter clogging - Clean or install new filter.
Suction line clogging - Service the suction line.
Air enters the pump - Need to bleed air.
Pump components are damaged - Change or rebuild pump.
| Electrical Troubleshooting |
Battery will not charge
Loose or corroded electrical wiring connections - Tighten or clean electrical wiring connections.
Faulty battery terminal clamps - Replace terminal clamps.
Battery dead cell - Replace the battery.
Belt is worn or loose - Belt needs to be adjusted or replaced.
Starter motor turns slow
Low battery voltage - Recharge the battery.
Battery runs out quickly - Service charging system or change battery.
Battery cables are disconnected or terminals are faulty - Check wiring connections and replace or clean terminals.
Starter will not work
Battery is drained or defective - Change or recharge battery.
Battery cables are disconnected or improperly connected - Inspect cables and connect properly.
Battery power is low - Recharge the battery.
Starter motor failing - Starter should be changed.
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| SKID STEER LOADERS SPECIFICATIONS |