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ASV RT-40 Troubleshooting
The
ASV Posi-Track RT-40 compact track loader driveline system components: a 111.4
cu.in (1.8L) Kubota D1803-CR-T 4-cycle 4-cylinder direct injection
turbocharged diesel engine with a rated power of 37.5 hp (28 kW) and 1-speed
hydrostatic transmission. The hydraulic system has a pump with a rated flow of
13.3 gpm (50.4 lpm). The system pressure is 3000 psi (207 bar). The ASV RT40 is
equipped with radial-lift loader boom, axial-piston drive pumps, and rubber
tracks with embedded co-polymer cords. The loader has a max lift height of
101" (2565 mm) to hinge pin. The rated operating capacity is 931 lbs (422 kg),
and tipping load is 2660 lbs (1205 kg).
| Engine Troubleshooting |
Engine starts up hard or won't start
Air in fuel tank - Bleed fuel tank.
Fuel filter element is dirty - Replace the filter element.
Defective or clogged injection nozzle - Check injection nozzles and replace if required.
Water or dirt in fuel system - Drain, flush, and service the system.
Improper valve clearance - Adjust valve clearance according to specifications.
Fuel injection pump is not working correctly - Install a new pump or rebuild.
Engine starts but stalls suddenly
Clogged air filter - Clean or change.
Fuel filter element is dirty - Clean or change the filter.
Problems with fuel injection pump tightness - Inspect fuel injection pump for leaks.
Defective or clogged fuel injectors - Test and replace fuel injectors if necessary.
Fuel injection pump is broken - Change or repair the pump.
Engine shuts off suddenly while running
Engine has not warmed up to the recommended temperature - Warm up the engine.
Clogged fuel filter - Replace the filter element.
Air in fuel system - Bleed fuel system.
Clogged or burnt injection nozzle - Replace injection nozzles.
Incorrect adjustment of fuel injection pump timing - Set the fuel pump timing correctly.
Engine stalls at idle
Improperly adjusted low idle speed - Correct low idle adjustment.
Faulty fuel injection pump - Replacement or repair required.
Fuel injectors are dirty or defective - Test and replace fuel injectors if necessary.
The valve clearance is incorrect - Check and adjust as required.
Loss of engine power
Clogged air cleaner - Clean or change.
Fuel injection nozzles are faulty or clogged - Inspect nozzles and replace if necessary.
Fuel injection pressure is wrong - Test fuel injection pressure and adjust it correctly.
Improper valve clearance - Correct valve clearance needs to be set.
Incorrect low idle speed adjustment - Adjust low idle speed.
Fuel hoses or lines clogging - Clean fuel lines and hoses.
Cylinder head gasket is defective - Replace the gasket as required.
Piston rings are damaged or leaking - Piston rings replacement required.
Engine overheats
Low engine coolant - The cooling system needs to be refilled and checked for faults.
Lack of engine oil - Check oil level and add oil as required.
Dirty radiator core or faulty radiator cap - Install new cap or clean radiator.
Loose or damaged fan belt - Change as required.
Engine is overloaded - Reduce engine load.
Oil pressure too low
Oil level is insufficient - Need to add oil.
Plugged engine oil filter - Clean or replace engine oil filter element.
Oil grade or viscosity is incorrect - Use oil of proper viscosity.
Main bearing oil clearance is excessive - Bearing replacement required.
Oil pump malfunction - Check and replace if necessary.
Engine noises or knocks
Engine oil level is low - Fill up the oil to required level.
Engine is not preheated - Warm up to required temperature.
Wrong setting of fuel injection pump timing - Set up as recommended.
Incorrectly set low idle speed - Test and adjust.
Fuel injector fault - Inspect fuel injectors and change as required.
Connecting rod is defective or misaligned - Replace or align connecting rod.
Worn or scored pistons - Have pistons replaced.
| Drive System Troubleshooting |
Machine will not move forward or backward
Hydraulic oil level is low - Need to add oil.
Undercarriage tracks are damaged or blocked - Repair or correct blockage.
Relief valve defective or worn - Change or repair defective relief valve.
Suction line or hydraulic filter is clogged - Check, clean, or change if necessary.
Damaged or worn hand or foot controls - Repair or replace.
Drive motor or pump failure - Inspect and change as required.
Machine won't drive straight or drives jerkily
Jammed or damaged track mechanism - Repair or remove jamming.
Tracks are loose or worn - Adjust track tension properly or repair tracks.
Undercarriage track frame is clogged with dirt, debris, or foreign objects - Remove debris or foreign objects and clean track frame.
Loss of power
Plugged hydraulic oil filter - Check, clean, or replace as required.
Relief valve is damaged or open - Change or close relief valve.
Transmission parts are defective or worn - Inspect and replace defective parts.
Input drive shaft is worn - Faulty drive shaft need to be replaced or repair.
Hydraulic system is leaking air - Bleed air from system.
Drive system overheats
Low hydraulic oil level - Check and refill the hydraulic oil.
Dirty hydraulic fluid filter - Check, clean, or replace as required.
Stuck relief valve - Repair or replace relief valve.
Damaged drive pump or hydraulic motor - Repair or replace faulty component.
Oil cooler is clogged - Clean cooling fins as required.
Drive system is overloaded - Reduce the load.
Excessive noise
Oil viscosity is too heavy - Use proper oil viscosity.
There is air in the hydraulic system - Need to bleed air.
Hydraulic motor or drive pump is worn - Repair or change faulty component.
Worn or damaged mechanical parts of drive system - Check the components for defect or damage and change if necessary.
| Hydraulics Troubleshooting |
Hydraulic system overheating
Hydraulic pressure incorrectly adjusted - Set pressure correctly.
Misadjusted or defective main relief valve - Set up or change the relief valve.
Hydraulic fluid contamination - The fluid must be changed.
Hydraulic oil level is insufficient - Fill up the hydraulic oil.
Defective hydraulic pump - Install new pump or repair it.
Lift arm can't drop or lift
Lift controls failure - Repair or change.
Hydraulic pump malfunction - Repair or change pump if required.
Hydraulic control valve is faulty - Repair or replace hydraulic valve.
Hydraulic cylinder is defective - Change or repair lift cylinder.
Insufficient hydraulic fluid - Checking hydraulic fluid level and add if necessary.
Bucket does not function
Faulty bucket tilt controls - Change or repair.
Hydraulic pump not working - Repair or change pump if required.
Hydraulic control valve is defective - Replace or repair the valve.
Broken bucket cylinder - Repair or change cylinder.
Hydraulic fluid is insufficient - Add fluid as required.
Bucket or lift arm functions slowly
Faulty hydraulic oil pump - Test pump flow rate and replace pump if required.
Oil leaks from hydraulic cylinder - Cylinder seals need to be replaced.
Hydraulic fluid level low - Fill the system to proper hydraulic fluid level.
Faulty or incorrect setting hydraulic control valve - Repair or adjust correctly.
Hydraulic pressure has dropped - Adjust it correctly.
Bucket or boom is moving jerkily
Air trapped in hydraulic system - Bleed hydraulic system.
Hydraulic oil filter clogging - Replace or clean the filter.
Hydraulic oil is contaminated - Change hydraulic oil.
Cylinder rod or tube is scratched - Change damaged component.
Hydraulic pump is noisy
Insufficient oil level or leaking hydraulic system - Remedy hydraulic leakage or refill oil as necessary.
Plugged hydraulic filter - Replace or clean the filter.
Dirty suction line - Suction line needs to be cleaned.
Pump sucks air - Need to bleed air.
Worn pump parts - Rebuild or change hydraulic pump.
| Electrical Troubleshooting |
Battery won’t charge
Electrical wire connections are loose or corroded - Tighten or service cable connections.
Battery terminal clamps are faulty - Terminal clamps need to be replaced.
Defective battery - Use a new battery.
Damaged or loose belt - Adjust belt tension or install a new belt.
Starter cranks slowly
Battery power is low - Recharge the battery.
Battery discharges quickly - Battery needs to be serviced or replaced.
Faulty battery terminals or disconnected cables - Connect wiring correctly or install new terminals.
Starter will not work
Battery is drained or defective - Battery needs to be recharged or replaced.
Wiring harness is disconnected or improperly connected - Check wiring harness and connect as required.
Battery voltage is low - Charge the battery.
Starter motor is defective - Replace or repair starter.
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| COMPACT TRACK LOADERS SPECIFICATIONS |