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Gehl 3510 Troubleshooting

The Gehl 3510 skid steer loader driveline system components: a 67 cu.in (1.1L) Ford VSG-411 vertical in-line 4-cylinder gasoline engine with a rated power of 27 hp (20.2 kW), and single-speed hydrostatic transmission. The hydraulic system has a pump with a rated capacity of 11 gal/min (42 l/min). The system relief pressure is 2200 psi (152 bar). The Gehl 3510 is equipped with a radial-lift loader boom, 60H drive chains, and 5.70x15 or 27x8.50x15 tires. The skid steer has a maximum lift height of 102" (2590 mm) to hinge pin and dump reach at max height of 15.5" (395 mm). The rated operating capacity is 850 lbs (384 kg), and tipping load is 1700 lbs (770 kg).

Engine Troubleshooting

Engine is not starting or hard starting
Gas tank is empty - Fill gasoline up.
Improper fuel grade - Use correct fuel grade.
Air in fuel tank - Bleed fuel tank.
Damaged spark plug wiring connection - Inspect spark plug wiring connection, change or repair.
Defective spark plug - Install new spark plug.
Ignition system is defective - Check ignition and replace faulty components.
Fuel filter is plugged - Fuel filter needs to be replaced.
Fuel lines are dirty - Fuel lines must be clean.
Fuel pump is dirty or defective - Inspect fuel pump and change as required.
Carburetor components worn out - Repair or replace parts.
Engine has low compression - Check cylinder block and replace defective parts.

Engine runs roughly
Ignition failure - Inspect ignition system and change failed components.
Clogged air filter - Replace or clean filter.
Spark plug is faulty - Spark plug need to be replaced.
Fuel pump is damaged or dirty - Inspect fuel pump and change as required.
Valve clearance is improper - Adjustment procedure required.
Bad ignition timing - Set the ignition timing correctly.
Low idle speed set incorrectly - Correct idle adjustment.

Engine starts and stalls suddenly
Damaged spark plug - Change spark plug as required.
Faulty or clogged carburetor - Service or change carburetor.
Damaged ignition coil - Replace ignition coil as necessary.
Valve springs are damaged or weak - Replace valve springs.
Valves sticking - Valves need to be cleaned.

Engine overheated
Engine oil insufficient - Fill up the oil to required level.
Engine overload - Reduce the load.
Carburetor fuel mixture is too lean - Set the carburetor properly.
Ignition timing is improper - Adjust ignition timing correctly.
Valve setting is improper - Valves needs to be set correctly.
Defective radiator cap or clogged radiator fins - Replace cap or clean radiator.
Engine has a lack of coolant - Refill to the correct level and inspect system for leaks.
Damaged thermostat - Install new thermostat.
Water pump is defective - Replace water pump.

Engine noise or knocking
Stale gasoline - Use proper gasoline.
Excessive engine load - Load reducing required.
Engine oil insufficient - Fill up the oil to required level.
Low idle speed setting is not correct - Test and adjust.
Dirty or defective fuel pump - Clean or change fuel pump.
Crankshaft or main bearings wear - Change or repair worn components.
Valve clearance is incorrect - Adjustment procedure required.
Cylinder bore or piston rings are worn - Change defective parts.

Lack of engine power
Carburetor is dirty or improperly adjusted - Clean or properly adjust carburetor.
Plugged air filter - Replace or service air filter.
Clogged or defective fuel pump - Clean or replace fuel pump.
Ignition system malfunction - Inspect ignition system and change faulty parts.
Blown cylinder head gasket - Change cylinder head gasket.
Burned or stuck valves - Change or clean valves.
Worn cylinder block parts - Replace defective parts as required.
Oil filter is dirty - Clean or replace oil filter.

Engine uses too much fuel
Dirty air filter element - Service or replace air filter.
Improper carburetor main jet adjustment - Adjust the carburetor main jet properly.
Spark plug is faulty or loose - Replace or tighten spark plug.
Ignition timing is improper - Adjust ignition timing correctly.
Valves are worn, burned or stuck - Replace or service valves.
Piston, sleeve, or rings are damaged - Replace defective parts.
Valve clearance is improper - Check and adjust.
Poor cylinder compression - Check cylinder block and change worn parts.

High engine oil consumption
Damaged gaskets or seals - Replace worn parts to avoid leaks.
Valve stems and guides are worn - Need to replace the valves.
Piston rings are stuck or broken - Have piston rings replaced.
Worn piston or cylinder liner - Inspect liner and piston, fit new parts as necessary.

Engine backfires
Carburetor mixture is too lean - Adjust carburetor properly.
Fuel lines are clogged - Fuel lines must be clean.
Ignition timing is wrong - Set the ignition timing correctly.
Valve setting is wrong - Valves needs to be set correctly.
Air filter element is plugged - Change or service air filter.

Drive System Troubleshooting

Drive system will not operate in either direction
Insufficient hydraulic oil - Check and refill the hydraulic oil.
Faulty drive chain - Check drive chain and change defective components.
Faulty relief valve - Repair or replace.
Hydraulic filter or suction line is plugged - Clean suction line or replace hydraulic filter.
Defective hand or foot controls - Change or repair.
Drive motor or pump is worn - Repair or replace faulty component.

Low power
Dirty hydraulic oil filter - Change or service hydraulic filter.
Opened or defective relief valve - Close or change relief valve.
Transmission components are faulty or damaged - Check and change defective components.
Input drive shaft is defective - Change or repair faulty drive shaft.
Hydraulic system is leaking air - Bleed air from system.

Drive system is overheated
Insufficient hydraulic oil - Check and refill the hydraulic oil.
Plugged hydraulic fluid filter - Change or clean hydraulic filter.
Relief valver is broken - Change or repair defective relief valve.
Defective drive pump or hydraulic motor - Repair or change faulty component.
Hydraulic oil cooler is plugged - Clean the cooling fins.
Drive system is overloaded - Reduce drive system load.

Drive system is excessively noisy
Oil viscosity is wrong - Use oil of proper viscosity.
Air in the hydraulic system - Bleed air from hydraulic system.
Worn hydraulic motor or drive pump - Change or repair faulty component.
Mechanical components of drive system are defective or worn - Inspect the components for worn or defect and repair as required.

Hydraulics Troubleshooting

Hydraulic system is overheated
Hydraulic pressure is not adjusted correctly - Set pressure correctly.
Misadjusted or defective main relief valve - Adjust or replace the relief valve.
Hydraulic oil is contaminated - Change hydraulic oil.
Hydraulic oil level is low - Add oil to the hydraulic system.
Defective hydraulic pump - Install new pump or repair it.

Lift arm cannot be raised or lowered
Lift controls are faulty - Inspect and repair if necessary.
Hydraulic pump malfunction - Repair or replace pump if necessary.
Defective hydraulic control valve - Repair or replace hydraulic valve.
Hydraulic cylinder is defective - Repair or install a new lift cylinder.
Hydraulic fluid is insufficient - Add fluid as required.

Bucket can't tilt
Bucket controls failure - Replace or repair.
Defective hydraulic pump - Install new pump or repair it.
Hydraulic control valve malfunction - Repair or replace hydraulic valve.
Broken bucket cylinder - Repair or change cylinder.
Hydraulic oil level low - Need to add oil.

Boom or bucket runs slowly
Faulty hydraulic oil pump - Test the pump flow rate and change pump if required.
Leaking hydraulic cylinder - Replace cylinder piston seals.
Low hydraulic fluid level - Fill the system to proper hydraulic fluid level.
Hydraulic control valve is faulty or out of adjustment - Set correctly or repair.
Hydraulic pressure loss - Set pressure correctly.

Lift arm or bucket is jerky
Hydraulic system is leaking air - Bleed air from hydraulic system.
Hydraulic oil filter clogging - Replace or clean the filter.
Hydraulic fluid is dirty - The fluid must be changed.
Scratched cylinder rod or tube - Change failed component.

Excessive hydraulic pump noise
Insufficient oil level or leaking hydraulic system - Repair hydraulic leaks or add oil as required.
Clogged hydraulic filter - Replace or clean the filter.
Suction line is clogged - Clean suction line as required.
Pump sucks air - Bleed air from hydraulics.
Pump parts are worn out - Replace or rebuild the pump.

Electrical Troubleshooting

Battery does not charge
Loose or corroded cable connections - Clean or tighten connections.
Faulty electrical terminal connectors - Terminal connectors should be replaced.
Battery is defective - Battery change required.
Belt is worn or loose - Belt needs to be adjusted or replaced.

Starter turning slow
Battery power is low - Battery is drained, recharge it.
Battery is draining quickly - Service charging system or change battery.
Bad terminals or disconnected battery cables - Check wire connections and change or service terminals.

Starter is not cranking
Battery is drained or worn - Charge or replace the battery.
Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly.
Low battery power - Low battery charging, charge as required.
Starter motor failure - Change or repair starter.