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Gehl 3310 Troubleshooting

The Gehl 3310 skid steer loader is powered by 47.7 cubic inches (0.8L) Onan B48G 2-cylinder 4-valve air-cooled gasoline engine with a rated power of 20 hp (14.9 kW) at 3500 rpm. The Gehl 3310 is equipped with a radial-lift loader boom, single-speed hydrostatic transmission, 60H drive chains, and 5.70x15 (Std) or 27x8.50x15 (Opt) tires. The hydraulic system has a pump with fluid flow rate of 11 gpm (42 lpm). The hydraulic pressure is 2200 psi (152 bar). The skid steer loader has a rated operating capacity of 750 lbs (340 kg) and tipping load of 1500 lbs (680 kg). The lift height is 102" (2590 mm) to hinge pin, and dump reach at full height is 15.5" (395 mm).

Engine Troubleshooting

Engine won't start or hard to start
Empty gas tank - Fill it up.
Low-quality gasoline - Use quality fuel.
Water or air in fuel system - Remove air or water from system.
Damaged spark plug wiring connection - Check the spark plug wire connection, repair or replace.
Faulty spark plug - Change spark plug as required.
Fuel filter is clogged - Change fuel filter.
Brake pedal not pushed down - Push the brake pedal down.
Carburetor settings incorrect - Adjusting as required.
Poor compression - Inspect and replace wear parts.
Throttle cable is adjusted improperly or worn - Adjust properly or replace the cable.

Engine runs unevenly
Cooling fins are plugged - Need to wash or clean.
Ignition system failure - Inspect ignition system and change failed components.
Faulty or stuck choke cable - Clean or change the cable.
Air filter is dirty - Change or service air filter.
Fuel pump is dirty or defective - Clean or change fuel pump.

Engine starts and then shuts off
Damaged spark plug - Install new spark plug.
Faulty or dirty carburetor - Service or replace carburetor.
Ignition coil is defective - Install a new ignition coil.
Valve springs are weak or broken - Install new valve springs.
Stuck valves - Service the valves.

Engine overheats
Engine oil level is insufficient - Need to add engine oil.
Engine is under excessive load - Load reducing required.
Air intake grill is clogged - Wash or clean as required.
Carburetor fuel mixture is too lean - Adjust carburetor correctly.
Ignition timing is improper - Ignition timing needs to be adjusted correctly.
Valve setting is incorrect - Adjust valves as required.

Engine knocking sound or abnormal noise
Stale gasoline - Use proper fuel.
Engine overloaded - Load reducing required.
Lack of engine oil - Checking oil level and add if necessary.
Low idle speed setting is not correct - Correct the settings.
Dirty or defective fuel pump - Clean or change fuel pump.
Crankshaft or main bearings are worn out - Replace crankshaft or bearings.
Valve clearance is wrong - Adjust valve clearance.
Worn piston rings or cylinder bore - Replace faulty parts.

Low engine power
Improperly adjusted or dirty carburetor - Service or correctly adjust carburetor.
Dirty air filter element - Clean or change air filter.
Fuel pump is dirty or defective - Check fuel pump and replace if necessary.
Defective ignition - Check ignition and replace faulty components.
Cylinder head gasket is damaged - Change cylinder head gasket.
Valves are burned or stuck - Clean or replace valves.
Worn or bent push rod - Replace push rod.
Faulty cylinder block components - Replace defective parts.
Dirty oil filter element (if equipped) - Clean or change oil filter.

High fuel consumption
Insufficient throttle opening - Adjust or replace throttle cable.
Improper adjustment of carburetor main jet - Adjust the carburetor main jet correctly.
Spark plug is loose or defective - Replace or tighten spark plug.
Stuck, burned, or worn valves - Service or change valves.
Worn piston, rings, or sleeve - Replace defective parts.
Incorrect valve clearance - Check and adjust.

Excessive oil consumption
Worn seals or gaskets - Install new components.
Damaged valve stems or valve guides - Replace the valves.
Damaged or seized piston rings - Have piston rings replaced.
Damaged cylinder liner or piston - Inspect liner and piston, fit new parts as necessary.
Breather hose or pipe is clogged - Clean or replace.

Drive System Troubleshooting

Machine will not move in either direction or one direction
Insufficient hydraulic oil - Fill the system to proper hydraulic oil level.
Damaged drive chain - Check drive chain and change faulty parts.
Relief valve is defective - Change or repair defective relief valve.
Clogged hydraulic filter or suction line - Check, clean, or change if necessary.
Worn or defective hand or foot controls - Check and repair as required.
Drive pump or motor is damaged - Repair or replace faulty component.

Power is too low
Dirty hydraulic oil filter - Check, clean, or change as necessary.
Relief valve is damaged or open - Replace or close relief valve.
Transmission components are faulty or damaged - Inspect and replace faulty parts.
Defective input drive shaft - Repair or install a new drive shaft.
Air leaks in hydraulic system - Need to bleed air.

Overheated drive system
Low hydraulic oil level - Checking hydraulic oil level and add if necessary.
Hydraulic fluid filter is clogged - Check, clean, or replace as required.
Relief valve is damaged or worn - Service or change relief valve.
Drive pump or hydraulic motor malfunction - Inspect and change as required.
Hydraulic oil cooler is dirty - Cooling fins need to be cleaned.
Overloaded drive system - Reduce loading.

Drive system is excessively noisy
Wrong oil viscosity - Use proper oil viscosity.
Air leaks in hydraulic system - Air bleeding is required.
Drive pump or hydraulic motor malfunction - Check and repair if required.
Mechanical components of drive system are worn or damaged - Inspect drive system and replace faulty components.

Hydraulics Troubleshooting

Hydraulic system has overheating
Hydraulic pressure is incorrect - Correct setting is required.
Main relief valve improper adjustment or failure - Adjust or replace the relief valve.
Hydraulic oil is contaminated - Fill up with fresh hydraulic oil.
Hydraulic oil level is insufficient - Fill up the hydraulic oil.
Hydraulic pump is faulty - Repair or replace pump if necessary.

Boom does not raise or lower
Faulty lift controls - Repair or change.
Defective hydraulic pump - Repair or replace pump if necessary.
Faulty hydraulic control valve - Install a new hydraulic valve or repair it.
Hydraulic cylinder not working - Repair or install a new lift cylinder.
Low hydraulic oil level - Check and refill the hydraulic oil.

Bucket won't move
Bucket tilt controls are defective - Replace or repair.
Defective hydraulic pump - Change or repair hydraulic pump if required.
Faulty hydraulic control valve - Change or repair hydraulic valve.
Hydraulic bucket cylinder is defective - Repair or change cylinder.
Hydraulic oil level low - Fill the system to proper hydraulic oil level.

Bucket or lift arm runs slowly
Hydraulic pump is defective - Test the pump flow rate and install new pump if required.
Hydraulic cylinder oil leakage - Cylinder seals need to be replaced.
Low hydraulic fluid level - Add fluid as required.
Damaged or incorrect adjusted hydraulic control valve - Repair or adjust properly.
Hydraulic system loosing pressure - Adjust it correctly.

Jerky operation of the bucket or boom
Air leaks in hydraulic system - Air bleeding is required.
Dirty hydraulic oil filter element - Clean or replace the filter.
Hydraulic fluid contamination - Fill up with fresh hydraulic fluid.
Scratched cylinder rod or tube - Replace defective component.

Hydraulic pump makes excessive noise
Not enough oil or hydraulic system leaking - Add hydraulic oil or correct system leaks.
Hydraulic filter is clogged - Service or replace hydraulic filter.
Plugged suction line - Service the suction line.
Air enters the pump - Bleed air from hydraulics.
Faulty pump parts - Rebuild or change hydraulic pump.

Electrical Troubleshooting

Battery cannot be charged
Loose or corroded cable connections - Tighten or service connections.
Battery terminal clamps are defective - Terminal clamps should be changed.
Bad cell in battery - Change the battery.
Loose or defective belt - Change belt or adjust belt tension.

Starter turning slow
Battery voltage is low - Recharge the battery.
Battery runs out quickly - Service battery or replace it.
Corroded battery terminals or disconnected wires - Connect cables properly or replace terminals.

Starter motor won't turn
Battery is discharged or worn - Recharge or change battery.
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly.
Battery power is low - Charge the battery.
Starter motor failing - Repair or replace starter.