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| Home / Compact Track Loaders / Bobcat Compact Track Loaders / Bobcat T320 |
Bobcat T320 Troubleshooting
The
Bobcat T320 compact track loader is powered by 230 cu.in (3.7L) Kubota
V3800-DI-T 4-cylinder direct injection turbocharged liquid-cooled diesel engine
with a rated power of 92 hp (68.6 kW). The Bobcat T320 is equipped with a
single-speed hydrostatic transmission, vertical-lift boom, wet disc brakes, and
12.6" (320 mm) or 17.7" (450 mm) rubber tracks. The hydraulic system has a gear
pump with fluid flow rate of 20.5 gpm (78 lpm) or 32 gpm (121 lpm). The track
loader has a rated operating capacity of 4605 lbs (2090 kg) and tipping load of
9210 lbs (4180 kg). The maximum lift height is 128.3" (3260 mm) to hinge pin,
and dump height is 101.4 inches (2575 mm).
| Engine Troubleshooting |
Engine starts up hard or won't start
Air in fuel system - Bleed fuel system.
Clogged fuel filter - Filter maintenance required.
Fuel injection nozzles are damaged or dirty - Replace injection nozzles.
Water in the fuel system - Change fuel and repair fuel system.
Incorrect valve clearance - Adjustment procedure required.
Damaged fuel injection pump - Repair or replace injection pump.
Diesel starts but immediately shuts off
Clogged air filter - Clean or change.
Fuel filter element is dirty - Change the filter element.
Poor fuel injection pump tightness - Look for any leaks of fuel pump, tighten it fast.
Dirty or defective injectors - Inspect fuel injectors and change as required.
Fuel injection pump damage - Replace or rebuild injection pump.
Engine stops suddenly during operation
Engine is not warmed up to the required temperature - Warm up engine as required.
Clogged fuel filter - Clean or change the filter.
Air in fuel tank - Bleed fuel tank.
Damaged or dirty injection nozzles - Inspect nozzles and replace if necessary.
Incorrect adjustment of fuel injection pump timing - Adjust as recommended.
Engine stalls at low idle speed
Incorrectly adjusted low idle speed - Need to adjust idle speed.
Fuel injection pump is damaged - Install a new pump or rebuild.
Fuel injectors are faulty or clogged - Clean or replace fuel injectors.
Improper valve clearance - Adjust valve clearance.
Engine loses power
Clogged air filter - Clean or change filter.
Clogged or burnt injection nozzle - Clean or change injection nozzles.
Fuel injection pressure is wrong - Adjust to correct pressure.
Excessive valve clearance - Correct valve clearance.
Low idle speed adjustment is incorrect - Test and adjust.
Dirt in the fuel lines or hoses - Fuel hoses and lines must be clean.
Cylinder head gasket is blown - Replace the gasket as required.
Worn or broken piston rings - Replace piston rings.
Engine overheated
Lack of coolant in cooling system - The cooling system needs to be refilled and checked for faults.
Not enough engine oil - Need to add engine oil.
Defective radiator cap or clogged radiator fins - Install new cap or clean radiator.
Broken or loose fan belt - Replace as required.
Engine overload - Reduce load on the engine.
Oil pressure is low
Low oil level - Add oil as required.
Dirty oil filter - Replace or clean engine oil filter element.
Wrong oil viscosity - Fill up with the correct oil viscosity.
Incorrect oil clearance in main bearing - Bearings need to be reinstalled.
Oil pump malfunction - Install a new pump.
Engine noises or knocks
Engine oil level low - Need to add engine oil.
Low coolant temperature - Warm up engine as required.
Fuel injection pump timing is wrong - Set the fuel pump timing correctly.
Low idle speed setting is incorrect - Adjust the low idle speed.
Fuel injectors are faulty or clogged - Clean or replace fuel injectors.
Connecting rod is misaligned or defective - Need to change or align the connecting rod.
Pistons are worn or broken - Have pistons replaced.
| Drive System Troubleshooting |
Drive system does not work in either direction
Low hydraulic oil level - Checking hydraulic oil level and add if necessary.
Track mechanism is damaged or blocked - Remove blockage or repair tracks.
Worn input drive shaft - Repair or replace.
Faulty relief valve - Repair or change.
Suction line or hydraulic filter is dirty - Service suction line or replace hydraulic filter.
Worn or damaged foot or hand controls - Check and repair as required.
Drive pump or motor malfunction - Inspect and replace as necessary.
Machine won't drive straight or drives jerkily
Damaged or jammed track mechanism - Repair or fix jamming.
Sagging or worn tracks - Adjust track sag with tensioning or replace tracks.
Undercarriage track frame is clogged with dirt, debris, or foreign objects - Clean track frame, remove debris and foreign objects.
Reduced power
Dirty hydraulic oil filter - Change or service hydraulic filter.
Damaged or opened relief valve - Close or replace relief valve.
Transmission components are worn or defective - Inspect and replace defective parts.
Defective input drive shaft - Replace or service the drive shaft.
Air trapped in hydraulic system - Need to bleed air.
Overheated drive system
Low hydraulic fluid level - Check and refill the hydraulic fluid.
Dirty hydraulic fluid filter - Check, clean, or replace as required.
Relief valve is broken - Change or repair relief valve.
Drive pump or hydraulic motor malfunction - Change or repair faulty component.
Plugged hydraulic oil cooler - Cooling fins need to be cleaned.
Drive system overload - Reduce the load.
Drive system makes excessive noise
Wrong oil viscosity - Drain and refill with proper oil.
Air in hydraulic system - Bleed hydraulic system.
Hydraulic motor or drive pump is worn - Inspect and change as required.
Worn or damaged mechanical parts of drive system - Check the components for worn or defect and replace if necessary.
| Hydraulics Troubleshooting |
Hydraulic system has overheating
Hydraulic pressure incorrectly adjusted - Adjust pressure correctly.
Faulty or improperly adjusted main relief valve - Adjust the valve or replace if necessary.
Hydraulic oil is dirty - The oil must be changed.
Lack of hydraulic fluid - Need to add fluid.
Faulty hydraulic oil pump - Install new pump or repair it.
Boom does not raise or lower
Faulty lift controls - Check and repair as required.
Hydraulic pump malfunction - Change or repair hydraulic pump if required.
Defective hydraulic control valve - Replace or repair the valve.
Hydraulic cylinder malfunction - Repair or replace hydraulic cylinder.
Hydraulic oil is insufficient - Checking hydraulic oil level and add if necessary.
Bucket does not function
Bucket tilt controls malfunction - Check and repair as required.
Damaged hydraulic oil pump - Repair or change pump if required.
Hydraulic control valve malfunction - Repair or replace hydraulic valve.
Bucket cylinder malfunction - Repair or install a new cylinder.
Hydraulic fluid is insufficient - Add fluid as required.
Bucket or lift arm is moving slowly
Worn hydraulic oil pump - Test pump performance and replace pump if necessary.
Hydraulic cylinder leaking - Repair leak by replacing the seals.
Low hydraulic oil level - Checking hydraulic oil level and add if necessary.
Defective or not adjusted hydraulic control valve - Repair or set properly.
Hydraulic pressure has dropped - Adjust pressure as required.
Bucket or boom movements are jerky
Hydraulic system is leaking air - Need to bleed air.
Plugged hydraulic oil filter - Clean or change the filter.
Hydraulic oil contamination - Change hydraulic oil.
Scored cylinder tube or rod - Replace damaged component.
Hydraulic pump is excessively noisy
Low oil level or hydraulic leaks - Refill hydraulic oil or repair leaks in system.
Plugged hydraulic filter - Service or change hydraulic filter.
Dirty suction line - Service the suction line.
Air trapped in hydraulic pump - Bleed air.
Faulty pump components - Install new hydraulic pump or rebuild it.
| Electrical Troubleshooting |
Battery won’t charge
Loose or corroded cable connections - Clean or tighten wiring connections.
Battery terminal connectors are defective - Change terminal connectors.
Dead cell in battery - Change the battery.
Loose or defective belt - Adjust belt tension or install a new belt.
Starter turns slow
Low battery capacity - Charge the battery.
Battery drains quickly - Battery needs to be serviced or replaced.
Bad terminals or disconnected battery cables - Check cables and service or change terminals.
Starter motor won't turn
Battery is discharged or worn - Recharge or replace battery.
Battery cables are disconnected or improperly connected - Inspect cables and connect properly.
Low battery power - Low battery charging, charge as required.
Starter motor failure - Starter should be changed.
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| COMPACT TRACK LOADERS SPECIFICATIONS |