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| Home / Skid Steer Loaders / Bobcat Skid Steer Loaders / Bobcat 730 |
Bobcat 730 Troubleshooting
The
Clark Bobcat 730 skid steer loader is powered by 107.7 cu.in (1.8L) Wisconsin
VF4D four-stroke four-cylinder air-cooled gasoline engine with a rated power of 28 hp (20.9
kW) at 2500 rpm. The Clark Bobcat 730 is equipped with a radial-lift loader
boom, single-speed hydrostatic transmission, 80H drive chains, and 7.00x15
tires. The hydraulic system has a pump with fluid flow rate of 11 gpm (42 lpm).
The hydraulic pressure is 2500 psi (172 bar). The skid steer loader has a rated
operating capacity of 1300 lbs (590 kg) and tipping load of 2650 lbs (1200 kg).
The lift height is 109 inches (2770 mm) to hinge pin, and dump height is 88.4
inches (2245 mm).
| Engine Troubleshooting |
Engine will not start or difficult to start
Fuel tank is empty - Add fuel.
Low-quality gasoline - Use correct gasoline grade.
Air in fuel system - Bleed fuel system.
Spark plug wire is loose or disconnected - Inspect spark plug wiring connection, change or repair.
Damaged spark plug - Install new spark plug.
Defective ignition - Inspect ignition system and change faulty parts.
Fuel filter is clogged - Fuel filter needs to be replaced.
Dirt in the fuel lines - Clean fuel lines.
Fuel pump is defective or dirty - Clean or change fuel pump.
Carburetor malfunction - Check and repair as required.
Low compression - Check and replace worn parts.
Irregular engine running
Defective ignition - Inspect ignition system and change failed components.
Clogged air filter - Clean or change filter.
Defective spark plug - Spark plug need to be replaced.
Clogged or defective fuel pump - Check fuel pump and replace if necessary.
Improper valve clearance - Adjust valve clearance.
Ignition timing is wrong - Ignition timing needs to be set properly.
Improperly adjusted low idle speed - Correct the settings.
Engine starts but then stops
Damaged spark plug - Install new spark plug.
Dirty or defective carburetor - Carburetor needs to be replaced or cleaned.
Faulty ignition coil - Replace ignition coil as necessary.
Loose or worn valve springs - Replace valve springs.
Valves sticking - Service the valves.
Engine overheating
Insufficient engine oil - Check and refill engine oil.
Engine overload - Load reducing required.
Carburetor fuel mixture is too lean - Adjust carburetor correctly.
Bad ignition timing - Set the ignition timing properly.
Valve setting is incorrect - Adjust valves as required.
Radiator fins are dirty or radiator cap is defective - Replace cap or clean radiator.
Engine coolant is insufficient - Add coolant and check the components of cooling system.
Thermostat is faulty - Change thermostat.
Water pump is defective - Install new water pump.
Engine noise or knocking
Stale or low octane fuel - Change gasoline.
Engine is overloaded - Reduce load.
Engine oil level is low - Need to add engine oil.
Incorrect low idle setting - Need to adjust idle speed.
Fuel pump is defective or dirty - Clean or install new fuel pump.
Main bearings or crankshaft failure - Crankshaft or bearings need to be replaced.
Excessive valve clearance - Need to adjust valve clearance.
Cylinder bore or piston rings are worn - Change faulty components.
Engine lacks power
Clogged or incorrectly adjusted carburetor - Clean or properly adjust carburetor.
Air filter is dirty - Change or clean air filter.
Clogged or damaged fuel pump - Check fuel pump and change if required.
Ignition system failure - Inspect ignition system and change failed components.
Blown cylinder head gasket - Cylinder-head gasket replacement required.
Valves are burned or stuck - Replace or clean valves.
Worn cylinder block parts - Replace defective components.
Plugged oil filter - Clean or replace oil filter.
High fuel consumption
Clogged air filter - Replace or service air filter.
Improper carburetor main jet adjustment - Adjust the carburetor main jet correctly.
Faulty or loose spark plug - Change or re-tighten spark plug.
Ignition timing is incorrect - Adjust ignition timing correctly.
Valves are worn, stuck, or burned - Replace or clean valves.
Worn sleeve, piston, or rings - Replace faulty components as required.
Valve clearance is incorrect - Check and adjust.
Engine has low compression - Check cylinder block and replace defective parts.
Excessive oil consumption
Worn seals or gaskets - Replace defective parts.
Worn valve guides and valve stems - Need to replace the valves.
Piston rings are seized or worn - Install new piston rings.
Scuffed cylinder liner or piston - Check piston and liner, replace as required.
Engine backfires
Carburetor mixture is too lean - Adjust carburetor correctly.
Dirty fuel lines - Service fuel lines.
Incorrect ignition timing - Set the ignition timing properly.
Wrong valve setting - Valves needs to be adjusted properly.
Air filter element is plugged - Service or replace air filter.
| Drive System Troubleshooting |
Machine is not moving forward or backward
Low hydraulic fluid level - Checking hydraulic fluid level and add if necessary.
Drive chain is worn - Inspect drive chain and replace faulty components.
Relief valve failure - Repair or replace.
Plugged hydraulic filter or suction line - Check, clean, or change if necessary.
Worn or defective hand or foot controls - Inspect and repair if necessary.
Drive pump or motor is damaged - Inspect and change as required.
Reduced power
Clogged hydraulic oil filter - Change hydraulic filter.
Relief valve is open or defective - Change or close relief valve.
Worn or faulty transmission components - Inspect and change faulty parts.
Input drive shaft failure - Service or change faulty drive shaft.
Hydraulic system is leaking air - Bleed air from hydraulic system.
Drive system overheating
Low hydraulic oil level - Fill the system to proper hydraulic oil level.
Dirty hydraulic fluid filter - Check, clean, or change as necessary.
Relief valve is defective - Repair or install a new relief valve.
Hydraulic motor or drive pump failure - Repair or replace faulty component.
Hydraulic oil cooler is dirty - Cooling fins should be cleaned.
Drive system overload - Reduce the load.
Drive system is noisy
Oil viscosity is too heavy - Use proper oil viscosity.
There is air in the hydraulic system - Need to bleed air.
Worn hydraulic motor or drive pump - Inspect and change as required.
Worn or damaged mechanical components of drive system - Check the components for worn or defect and replace if necessary.
| Hydraulics Troubleshooting |
Hydraulic system has overheating
Hydraulic pressure is not adjusted correctly - Correct adjustment is required.
Main relief valve is faulty or misadjusted - Adjust relief valve or change if required.
Hydraulic fluid is contaminated - Fill up with fresh hydraulic fluid.
Lack of hydraulic fluid - Fill the hydraulic system with oil.
Hydraulic pump is defective - Replace or repair pump if necessary.
Boom fails to lift or drop
Defective lift controls - Replace or repair.
Hydraulic pump failure - Install new pump or repair it.
Hydraulic control valve failure - Repair or change hydraulic valve.
Hydraulic cylinder failure - Repair or replace hydraulic cylinder.
Insufficient hydraulic fluid - Fill the system to proper hydraulic fluid level.
Bucket tilt does not work
Bucket tilt controls are defective - Change or repair.
Hydraulic pump failure - Install new pump or repair it.
Hydraulic control valve is defective - Repair or change the valve.
Bucket cylinder malfunction - Repair or install a new cylinder.
Hydraulic oil is insufficient - Need to add oil.
Boom or bucket is moving slowly
Hydraulic pump is worn - Check the pump performance and replace it if required.
Hydraulic cylinder leaking - Install new cylinder seals.
Hydraulic fluid level low - Checking hydraulic fluid level and add if necessary.
Hydraulic control valve is not set properly or defective - Repair or set properly.
Hydraulic pressure has dropped - Adjust it correctly.
Lift arm or bucket movements are jerky
Air trapped in hydraulic system - Need to bleed air.
Hydraulic oil filter is clogged - Replace or clean the filter.
Contaminated hydraulic oil - The oil must be changed.
Cylinder tube or rod scoring - Replace damaged component.
Hydraulic pump is excessively noisy
Not enough oil or hydraulic system leaking - Add hydraulic oil or correct system leaks.
Hydraulic filter is dirty - Service or replace hydraulic filter.
Suction line is clogged - Need to service the suction line.
Pump sucks air - Bleed air.
Faulty pump parts - Install new hydraulic pump or rebuild it.
| Electrical Troubleshooting |
Battery is not charging
Wiring connections are loose or corroded - Tighten or service connections.
Battery terminal clamps are defective - Replace terminal clamps.
Battery is defective - Replace the battery.
Belt is damaged or loose - Install a new belt or adjust belt tension.
Starter cranks slow
Low battery output - Low battery charging, charge as required.
Battery is not holding charge - Service battery or change it.
Terminals are faulty or battery cables are disconnected - Check wire connections and change or service terminals.
Starter doesn't crank
Battery is low or faulty - Battery needs to be recharged or replaced.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Battery voltage is low - Recharge the battery.
Defective starter motor - Repair or replace starter.
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| SKID STEER LOADERS SPECIFICATIONS |