____________________________________________________________________________________
| Home / Compact Track Loaders / ASV Compact Track Loaders / ASV VT70 |
ASV VT-70 Troubleshooting
The
ASV VT70 compact track loader is powered by Deutz TCD2.2-T4 4-cylinder diesel
engine with a rated power of 74.3 hp (55.4 kW) or Kubota V2403-CR-TIE4
4-cylinder diesel engine with a rated power of 65 hp (48.6 kW). The ASV VT-70 is
equipped with a 2-speed hydrostatic transmission, vertical-lift loader boom, and
suspended undercarriage with 15" (380 mm) rubber tracks. The hydraulic system
has a standard pump with fluid flow rate of 23 gpm (87.1 lpm). The hydraulic
pressure is 3300 psi (227 bar). The loader has a rated operating capacity of
2328 lbs (1055 kg) and tipping load of 6650 lbs (3015 kg). The max lift height
is 126.5" (3215 mm) to hinge pin.
| Engine Troubleshooting |
Engine hard to start or will not start
Air in fuel system - Bleed fuel system.
Fuel filter plugging - Replace filter element.
Faulty or dirty injection nozzles - Clean or replace injection nozzles.
Dirt or water in fuel system - Drain water or flush dirt from the system.
Incorrect valve clearance - Need to adjust valve clearance.
Fuel injection pump malfunction - Change or repair the pump.
Diesel starts but then stops
Plugged air cleaner - Clean or replace air cleaner element.
Dirty fuel filter - Change or clean the filter element.
Fuel injection pump is leaking - Repair any leaks.
Dirty or defective injectors - Clean fuel injectors or change it.
Fuel injection pump is not working correctly - Replace injection pump or repair it.
Engine stalls during operation
Engine is cold - Warm up to required temperature.
Fuel filter is plugged - Clean the filter or install new filter element.
Air in the fuel system - Air bleeding.
Clogged or burnt injection nozzle - Test injection nozzles and change if necessary.
Timing of fuel injection pump is incorrect - Adjust as recommended.
Engine stops when idling
Wrong adjustment of low idle speed - Adjust low idling as recommended.
Damaged fuel injection pump - Replace or repair injection pump.
Fuel injectors are faulty or clogged - Change or clean fuel injectors.
Valve clearance is wrong - Adjustment procedure required.
Diesel engine loses power
Air filter is plugged - Clean or change filter.
Defective injection nozzle - Clean or replace injection nozzles.
Improper fuel injection pressure - Correct the pressure settings.
Improper valve clearance - Adjust to proper valve clearance.
Incorrect low idle speed adjustment - Adjust the low idle speed.
Restricted fuel hoses or lines - Fuel lines and hoses need to be cleaned.
Defective cylinder head gasket - Install new cylinder head gasket.
Piston rings are broken or leaking - Install new piston rings.
Engine overheating
Insufficient coolant fluid - Add coolant and check the components of cooling system.
Insufficient engine oil - Fill up the engine oil.
Damaged radiator cap or dirty radiator core - Change cap or clean radiator.
Excessive wear of the fan belt - Replace as required.
Engine overload - Reduce load on the engine.
Oil pressure too low
Low oil level - Checking oil level and add if necessary.
Oil filter element clogged - Service or change engine oil filter element.
Improper type of engine oil - Use proper viscosity oil.
Crankshaft bearing has excessive oil clearance - Change bearings.
Worn oil pump - Inspect and change as required.
Engine noises or knocks
Engine oil level is low - Checking oil level and add if necessary.
Engine is not warmed up to the required temperature - Warm up engine as required.
Fuel injection pump timing is wrong - Adjust the pump as required.
Wrong adjustment of low idle speed - Correct the settings.
Dirty or defective injectors - Inspect fuel injectors and change as required.
Connecting rod is worn or not aligned - Alignment procedure or replacement is required.
Piston wear or scoring - Pistons replacement required.
| Drive System Troubleshooting |
Drive system doesn't work in either direction
Hydraulic fluid level low - Fill the system to proper hydraulic fluid level.
Undercarriage tracks are defective or jammed - Fix jamming or repair tracks.
Relief valve is not working correctly - Repair or replace relief valve.
Suction line or hydraulic filter is plugged - Clean suction line or replace hydraulic filter.
Foot or hand controls are damaged - Repair or change.
Drive pump or motor is damaged - Check and repair if required.
Machine is not driving straight or driving is jerky
Track mechanism is jammed or defective - Repair or remove jamming.
Tracks are loose or faulty - Adjust track tension or replace tracks.
Undercarriage track frame is clogged with dirt, debris, or foreign objects - Clean undercarriage track frame, remove foreign objects and debris.
Reduced power
Hydraulic oil filter is clogged - Check, clean, or replace as required.
Worn or open relief valve - Replace or close relief valve.
Transmission parts are damaged or faulty - Inspect and replace faulty parts.
Stuck input drive shaft - Service or change faulty drive shaft.
Air leaks in hydraulic system - Bleed air from hydraulic system.
Drive system overheats
Hydraulic fluid level low - Checking hydraulic fluid level and add if necessary.
Hydraulic fluid filter is clogged - Check, clean, or change as necessary.
Stuck relief valve - Rebuild or install a new relief valve.
Hydraulic motor or drive pump is defective - Inspect and change as required.
Hydraulic oil cooler is plugged - Cooling fins should be cleaned.
Drive system overloaded continuously - Load should be reduced.
Drive system makes excessive noise
Oil viscosity is wrong - Use correct oil viscosity.
Air in hydraulic system - Bleed hydraulic system.
Hydraulic motor or drive pump is worn - Inspect and change as required.
Mechanical parts of drive system are worn or damaged - Check the components for defect or damage and change if necessary.
| Hydraulics Troubleshooting |
Hydraulic system has overheating
Hydraulic pressure incorrectly adjusted - Set pressure correctly.
Main relief valve is faulty or misadjusted - Replace or set up the relief valve.
Hydraulic oil is dirty - Hydraulic oil change required.
Not enough hydraulic fluid in the system - Need to add fluid.
Worn hydraulic oil pump - Install new pump or repair it.
Lift arm fails to drop or lift
Lift controls failure - Check and repair as required.
Hydraulic pump failure - Change or repair hydraulic pump if required.
Defective hydraulic control valve - Repair or change hydraulic valve.
Damaged hydraulic cylinder - Repair or change hydraulic cylinder.
Insufficient hydraulic oil - Need to add oil.
Bucket does not tilt
Bucket tilt controls are defective - Replace or repair.
Hydraulic pump not working - Repair or replace pump if necessary.
Defective hydraulic control valve - Replace or repair the valve.
Defective bucket cylinder - Repair or change cylinder.
Insufficient hydraulic oil - Checking hydraulic oil level and add if necessary.
Boom or bucket functions slowly
Hydraulic pump is defective - Check hydraulic pump flow and replace pump if necessary.
Hydraulic cylinder leaking - Replace cylinder piston seals.
Low hydraulic fluid level - Fill up the hydraulic fluid.
Damaged or incorrect adjusted hydraulic control valve - Set correctly or repair.
Hydraulic pressure is low - Correct setting is required.
Bucket or boom is working jerkily
Hydraulic system is leaking air - Need to bleed air.
Hydraulic oil filter is clogged - Clean or change the filter.
Dirty hydraulic oil - The oil must be changed.
Scored cylinder tube or rod - Change damaged component.
Hydraulic pump is noisy
Not enough oil or hydraulic system leaking - Remedy hydraulic leakage or refill oil as necessary.
Hydraulic filter is dirty - Change or clean oil filter.
Suction line clogging - Service the suction line.
Air trapped in hydraulic pump - Bleed air.
Pump components are worn out - Change or rebuild pump.
| Electrical Troubleshooting |
Battery does not charge
Corroded or loose electrical wire connections - Tighten or clean electrical wiring connections.
Defective electrical terminal connectors - Change terminal connectors.
Battery bad cell - Install a new battery.
Belt is loose or defective - Replace belt or adjust belt tension.
Starter motor cranks slow
Battery power is low - Charge the battery.
Battery is draining quickly - Service charging system or replace battery.
Terminals are faulty or battery cables are disconnected - Connect wires properly or change terminals.
Starter does not work
Battery is discharged or worn - Recharge or replace battery.
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly.
Low battery capacity - Low battery charging, charge as required.
Starter motor is faulty - Repair or replace starter.
____________________________________________________________________________________
____________________________________________________________________________________
| COMPACT TRACK LOADERS SPECIFICATIONS |