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Mahindra 2015 Troubleshooting
The
Mahindra 2015 compact utility tractor was manufactured between 2003 and 2008.
The Mahindra 2015 tractor is powered by Mitsubishi S3L 4-cycle 3-cylinder
vertical overhead valve liquid-cooled diesel engine. A 68.75 cubic inches (1.13
L) engine has a cylinder bore of 3.07" (78 mm), piston stroke of 3.09" (78.5
mm), and rated power of 20 hp (14.9 kW). The Mahindra 2015 is fitted with a two
transmission options: 6x2 constant mesh transmission, or 2-range hydrostatic
transmission. The maximum forward speed - 10 mph (16 km/h), maximum reverse
speed - 5 mph (8 km/h).
The open center hydraulic system includes a gear pump with rated fluid flow of 5.8 gal/min (22 l/min). The main relief pressure is 147 bar (2133 psi). The tractor is equipped with a hydrostatic power steering system, dry shoe brakes, 7.00x15 front tyres, and 9.50x16 rear tyres. The wheelbase is 58 inches (1470 mm). The tractor is compatible with Mahindra ML104 front end-loader with a maximum lift height of 76.5" (1940 mm) and lift capacity to maximum height of 915 lbs (415 kg).
| Engine Troubleshooting |
| Engine difficult to start or will not start |
Air in fuel tank - Bleed fuel tank.
Clogged fuel filter - Filter maintenance required.
Fuel injection nozzles fault - Inspect nozzles and replace if necessary.
Water in the fuel system - Change fuel and repair fuel system.
Valve clearance is not correct - Adjust valve clearance.
Defective fuel injection pump - Repair or install a new fuel pump.
| Diesel starts but stalls suddenly |
Clogged air filter - Clean or replace element.
Clogged fuel filter - Replace the filter element.
Fuel injection pump leakage - Check the fuel injection pump for leaks and fix it.
Fuel injector fault - Inspect fuel injectors and change as required.
Fuel injection pump malfunctioning - Change pump or rebuild it.
| Engine shuts off suddenly while running |
Engine is cold - Normalize the temperature by warming up the engine.
Clogged fuel filter - Clean or replace the filter.
There is air in the fuel system - Bleed the system.
Faulty or dirty injection nozzles - Replace injection nozzles.
Timing of fuel injection pump is incorrect - Adjust the pump as required.
| Engine stops while idling |
Low idle speed setting is incorrect - Need to adjust idle speed.
Fuel injection pump is defective - Replacement or repair required.
Fuel injector fault - Replace or clean fuel injectors.
Improper valve clearance - Adjustment procedure required.
| Low engine power |
Intake air restriction - Service air cleaner.
Faulty or dirty injection nozzles - Test injection nozzles and change if necessary.
Incorrect fuel injection pressure - Correct the pressure settings.
The valve clearance is not adjusted - Adjust valve clearance according to specifications.
Too low idle RPM - Adjust as required.
Dirty fuel lines or hoses - Clean fuel hoses and lines.
Cylinder-head gasket is broken - Gasket should be replaced.
Piston rings are damaged or leaking - Replace piston rings.
| Engine overheating |
Lack of engine coolant - Top up coolant fluid and check system for leaks.
Insufficient engine oil - Check oil level and add oil as required.
Radiator fins are dirty or radiator cap is defective - Change cap or clean radiator.
Fan belt is loose or defective - If necessary, replace the belt.
Engine is under excessive load - Load reducing is recommended.
| Insufficient oil pressure |
Low oil level - Check and refill the oil.
Engine oil filter is plugged - Clean or replace engine oil filter element.
Oil grade or viscosity is wrong - Use oil of proper viscosity.
Crankshaft bearing oil clearance is excessive - Bearing replacement required.
Oil pump failure - Inspect and change as required.
| Abnormal engine noise or knocking |
Low engine oil level - Add oil to the engine crankcase.
Engine is not preheated - Warm up engine as required.
Improper setting of fuel injection pump timing - Set it up as required.
Too low idle RPM - Correct low idle settings.
Dirty or defective injectors - Inspect fuel injectors and change as required.
Connecting rod is misaligned or defective - Align or change connecting rod.
Pistons are scored or worn - Pistons need to be replaced.
| Transmission Troubleshooting |
| Transmission oil pressure is low |
Transmission oil insufficient - Fill the transmission housing with oil.
Clogged transmission oil filter element (if fitted) - Service or replace the transmission oil filter.
Relief valve malfunction - Replace the valve.
| Transmission makes excessive noise |
Insufficient transmission fluid - Add fluid to the transmission housing.
Transmission oil contamination - Transmission oil change required.
Incorrect backlash or gears are worn - Change the gears or set backlash properly.
Worn or cracked bearings - Bearings need to be replaced.
Shift forks are bent or worn out - Replace defective shift forks.
Damaged or worn shaft splines - Shaft need to be replaced.
| Hard to shift gears |
Gear shift linkage is worn or rusty - Replace or lubricate the shift linkage.
Shift forks are worn or bent - Change the shift forks.
Defective parts in the gearshift mechanism - Replace defective parts.
Improperly adjusted or worn clutch - Clutch replacement or adjustment required.
| External fluid leaks |
Transmission oil level is exceeded - Correct the oil volume.
Worn seals or gaskets - Replace worn gaskets or seal.
| Hydrostatic Transmission Troubleshooting |
| HST transmission is making noise |
Dirty transmission fluid or insufficient fluid level - Pour fresh fluid or add transmission fluid to proper level.
Bent or unadjusted speed control pedal linkage - Adjust or change linkage.
Relief valve malfunction - Install a new relief valve.
Excessive transmission load - Reduce transmission load.
Worn or defective parts of the hydrostatic transmission - Check internal transmission parts for damage or wear and replace if required.
| Loss of power |
Lack of transmission fluid - Fill the transmission housing to proper fluid level.
Relief valve is damaged - Change the valve.
Bent or unadjusted speed control pedal linkage - Repair or adjust linkage.
| Transmission oil overheating |
Transmission oil insufficient - Fill the transmission housing with oil.
Plugged transmission oil filter - Service or replace the transmission oil filter.
Plugged or defective cooling components - Check all cooling components and repair or change if required.
Transmission is under excessive load - Reduce transmission load.
| External fluid leaks |
Broken seals or gaskets - Install new gaskets or seal.
High internal transmission case pressure - Change defective components.
Oil drain pipe is plugged - Check pipe and service if necessary.
| Hydraulic System Troubleshooting |
| Hydraulic oil pressure is insufficient |
Hydraulic oil level low - Need to add oil.
Clogged hydraulic fluid filter - Change the hydraulic filter element or service if required.
Damaged hydraulic pump - Install a new hydraulic oil pump.
Hydraulic control valve block is not set properly - Use the proper setting.
Broken hydraulic cylinder - Install a new hydraulic cylinder or repair it.
Leaking hydraulic lines - Inspect hydraulic system for leaks and repair it.
| Hydraulic system is too hot |
Defective main relief valve - Replace relief valve.
Improper type of hydraulic fluid - The correct type of fluid must be used.
Hydraulic fluid is contaminated - Fill up with new hydraulic fluid.
Air trapped in hydraulic system - Bleed air from system.
| 3-point hitch won't lift or lifts slowly |
Excessive hitch loading - The load should be reduced.
Insufficient hydraulic fluid - Fill the system to proper hydraulic fluid level.
Hydraulic fluid filter element is clogged - Clean the hydraulic filter or install new filter element.
Faulty hydraulic pump - Replace or repair hydraulic oil pump.
Main relief valve malfunctioning - Replace relief valve.
Faulty hydraulic spool valve - Replace or repair the valve.
Hydraulic cylinder failure - Repair or replace hydraulic cylinder.
Disconnected or broken suction line - Change or connect properly.
| Hitch not lowering or hitch lowers slowly |
Hydraulic control valve block is out of adjustment - Control valve needs to be adjusted.
Hydraulic cylinder malfunction - Repair or change hydraulic cylinder.
Hitch is out of adjustment - The hitch must be adjusted.
Damaged hitch cross shaft - Install a new shaft.
| Jerky lowering or lifting of the hitch |
Air trapped in hydraulic system - Bleed air from system.
Dirty hydraulic oil - The oil must be changed.
Hydraulic pump is defective - Replace or repair hydraulic oil pump.
Faulty hydraulic spool valve - Repair or replace hydraulic valve.
Hydraulic cylinder failure - Repair or install a new hydraulic cylinder.
| Steering System Troubleshooting |
| Difficult steering |
Incorrectly installed or worn steering column - Install the steering column correctly or replace it.
Air lock in hydraulic steering system - Bleed the system of air.
Incorrect toe-in - Check toe-in and correct.
Front tires are worn unevenly - Install new tires.
Steering pump is worn - Check the hydraulic steering pump and change if necessary.
Damaged or stuck steering pump control valve - Replace or service control valve.
Insufficient steering fluid - Fill up the steering fluid.
| Steering wheel free play is excessive |
Steering column shaft or coupling is worn out - Replace faulty component.
Hydraulic steering pump is defective - Steering pump needs to be replaced or repaired.
Loose or worn steering linkage components - Repair or change steering linkage.
| Tractor is pulling to right or left |
Uneven tire pressure - Inflate the tires properly.
Incorrect toe-in - Check and adjust toe-in.
Loose or worn steering linkage parts - Change or repair steering linkage.
Worn or incorrectly adjusted or worn front wheel bearings - Replace the bearings or adjust it properly.
| Electrical System Troubleshooting |
| Battery cannot be charged |
Corroded or loose wire connections - Tighten or service connections.
Faulty electrical terminal connectors - Terminal connectors need to be changed.
Bad cell in battery - Install a new battery.
Worn or loose belt - Replace belt or adjust belt tension.
| Starter motor turns slow |
Low battery output - Battery is drained, recharge it.
Battery runs out quickly - Service or change the battery.
Battery terminals are corroded or wires are disconnected - Connect wires properly or change terminals.
| Starter motor is not working |
Battery is drained or defective - Recharge or change battery.
Wiring is improperly connected or disconnected - Check wiring and connect properly.
Low battery voltage - Battery is drained, recharge it.
Faulty starter motor - Starter should be changed.
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