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Home / Wheel Loaders / Kubota Wheel Loaders / Kubota RT160-2

Kubota RT160-2 Troubleshooting

The Kubota RT160-2 articulated wheel loader is powered by Kubota D1105 three-cylinder liquid-cooled diesel engine with a rated power of 26 hp (19 kW) at 2050 rpm. The Kubota RT160-2 is equipped with a hydrostatic transmission, power steering system, hydraulic wet disc brakes, and 26x12.0-12 standard tires. The hydraulic system has a pump with fluid flow rate of 11.9 gpm (45 lpm). The hydraulic pressure is 2465 psi (170 bar). The wheel loader has a rated operating capacity of 825 lbs (375 kg) and tipping load of 1650 lbs (750 kg). The maximum lift height is 81.5" (2070 mm) to hinge pin, and bucket breakout force is 3300 lbs (1500 kg).

Engine Troubleshooting

Engine starts up hard or won't start
Air in the fuel lines - Bleed the fuel lines.
Fuel filter element is clogged - Clean the filter element.
Fuel injection nozzles are faulty or clogged - Clean or change injection nozzles.
Dirt or water in fuel system - Drain water or flush dirt from the system.
Improper valve clearance - Check and adjust as required.
Fuel injection pump is damaged - Repair or replace injection pump.

Diesel starts but immediately stops
Air filter is plugged - Replace or clean air filter element.
Fuel filter element is dirty - Replace filter element.
Problems with fuel injection pump tightness - Inspect fuel injection pump for leaks.
Clogged or defective injectors - Clean fuel injectors or change it.
Fuel injection pump is broken - Repair or replace injection pump.

Engine shuts off suddenly during operation
Coolant temperature is low - Warm up to required temperature.
Fuel filter element is dirty - Install new filter element.
Air trapped in fuel system - Bleed air.
Faulty or dirty injection nozzles - Inspect nozzles and replace if necessary.
Fuel injection pump timing is not adjusted - Adjust as recommended.

Engine stalls when idling
Incorrect low idle speed adjustment - Correct low idle adjustment.
Fuel injection pump is not operating properly - Rebuild or change fuel pump.
Defective fuel injectors - Change or clean fuel injectors.
The valve clearance is not adjusted - Adjustment procedure required.

Engine power loss
Air cleaner is dirty - Service or replace air cleaner.
Faulty or dirty injection nozzles - Clean or change injection nozzles.
Improper fuel injection pressure - Adjust to proper pressure.
Improper valve clearance - Have it adjusted.
Low idle speed setting is incorrect - Correct low idle adjustment.
Dirty fuel lines or hoses - Service fuel hoses and lines.
Damaged cylinder-head gasket - Gasket should be replaced.
Piston rings are defective or leaking - Replace the piston rings as required.

Engine overheats
Insufficient coolant fluid - Fill radiator to proper level and check components for faults.
Engine oil level is insufficient - Fill up the engine oil.
Clogged radiator fins or leaking radiator cap - Change cap or clean radiator.
Fan belt slipping or worn - If necessary, replace the belt.
Engine overloaded - Load reducing is recommended.

Insufficient oil pressure
Engine oil level low - Checking oil level and add if necessary.
Oil filter element clogged - Clean or change engine oil filter.
Incorrect oil viscosity - Fill up with the correct oil viscosity.
Crankshaft bearing has excessive oil clearance - Replace bearings.
Defective oil pump - Check and replace if necessary.

Engine knocks or noises
Engine oil level is insufficient - Fill up the oil to required level.
Low coolant temperature - Normalize the temperature by warming up the engine.
Timing of fuel injection pump is incorrect - Adjust as recommended.
Wrong adjustment of low idle speed - Adjust as required.
Clogged or defective injectors - Change or clean fuel injectors.
Connecting rod is not aligned or worn - Alignment procedure or replacement is required.
Pistons are scored or worn - Have pistons replaced.

Hydrostatic Transmission Troubleshooting

HST transmission noises
Contaminated transmission fluid or low fluid level - Fill to required level or change the fluid.
Speed control pedal linkage is bent or not adjusted - Adjust or change linkage.
Defective relief valve - Replace relief valve.
Excessive transmission load - Reduce transmission load.
Defective or worn transmission parts - After disassembling and inspection, change defective components.

Lack of power
Low fluid level - Fill the transmission housing to proper fluid level.
Relief valve malfunction - Change relief valve.
Bent or unadjusted speed control pedal linkage - Adjust or install new linkage.

Transmission fluid over heats
Low oil level - Check transmission oil level and add oil as required.
Clogged transmission fluid filter - Service or replace the transmission fluid filter.
Cooling components are clogged or damaged - Check all cooling components and change or repair if required.
Excessive transmission load - Load needs to be reduced.

Transmission oil leakage
Broken seals or gaskets - Install new seal or gaskets.
High internal transmission case pressure - Change defective components.
Oil drain line is clogged - Clean or change the line.

Hydraulics Troubleshooting

Hydraulic system overheats
Hydraulic pressure is not adjusted correctly - Adjust it correctly.
Main relief valve malfunction or improper adjustment - Adjust the valve or replace if necessary.
Hydraulic oil contamination - Hydraulic oil change required.
Hydraulic oil level is insufficient - Fill up the hydraulic oil.
Faulty hydraulic oil pump - Replace or repair pump if necessary.

Boom won't lower or raise
Lift controls are defective - Repair or replace.
Hydraulic pump malfunction - Repair or change pump if required.
Defective hydraulic control valve - Install a new valve or repair it.
Hydraulic cylinder is faulty - Replace or repair boom cylinder.
Insufficient hydraulic oil - Fill the system to proper hydraulic oil level.

Bucket can't tilt
Bucket tilt controls malfunction - Repair or replace.
Hydraulic pump malfunction - Repair or change pump if required.
Hydraulic control valve is faulty - Change or repair hydraulic valve.
Hydraulic bucket cylinder is broken - Install a new cylinder or repair it.
Insufficient hydraulic fluid - Fill the system to proper hydraulic fluid level.

Slow boom or bucket operation
Defective hydraulic pump - Check pump flow and change pump if necessary.
Oil leaks from hydraulic cylinder - Cylinder seals need to be replaced.
Hydraulic oil is insufficient - Check and refill the hydraulic oil.
Damaged or incorrect adjusted hydraulic control valve - Set correctly or repair.
Hydraulic system loosing pressure - Hydraulic pressure must be set correctly.

Lift arm or bucket is moving jerkily
Air leaks in hydraulic system - Bleed air from system.
Hydraulic oil filter element is clogged - Service or replace the hydraulic filter.
Hydraulic fluid is contaminated - Hydraulic fluid change required.
Scored cylinder tube or rod - Replace defective component.

Excessive hydraulic pump noise
Hydraulic leaks or lack of oil - Refill hydraulic oil or repair leaks in system.
Clogged hydraulic filter - Service or change hydraulic filter.
Plugged suction line - Need to clean the suction line.
Air trapped in hydraulic pump - Bleed air.
Pump components are worn out - Rebuild or install new pump.

Electrical Troubleshooting

Battery will not charge
Corroded or loose wire connections - Service or tighten connections.
Defective battery terminal clamps - Terminal clamps need to be replaced.
Battery is defective - Battery replacement required.
Loose or defective belt - Replace belt or adjust belt tension.

Starter cranks slow
Low battery output voltage - Recharge the battery.
Battery discharges quickly - Service charging system or install new battery.
Wires are disconnected or battery terminals are corroded - Check wiring connections and replace or clean terminals.

Starter is not working
Battery is drained or defective - Change or recharge battery.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Low battery output voltage - Charge the battery.
Damaged starter motor - Starter needs to be changed.

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WHEEL LOADERS SPECIFICATIONS

Wheel Loaders, Skid Steers, and Compact Track Loaders