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| Home / Farm Tractors / Mahindra Tractors / Mahindra Max 25 |
Mahindra Max 25 Troubleshooting
The
Mahindra Max 25 sub-compact utility tractor was manufactured between 2012 and
2014. The Mahindra Max 25 driveline consists of Mitsubishi S3L2 3-cylinder
indirect injection water-cooled diesel engine and 2-range hydrostatic
transmission. A 80.4 cubic inches (1.3L) engine has a cylinder bore of 3.07" (78
mm), piston stroke of 3.62" (92 mm), and rated power of 25 Hp (18.6 kW). The
maximum forward speed - 9.6 mph (15.5 km/h), maximum reverse speed - 5 mph (8
km/h).
The open center hydraulic system includes a gear pump with rated fluid flow of 17.5 gpm (17.5 lpm). The Mahindra Max 25 is equipped with a hydrostatic power steering system, wet disc brakes, 6.00x12 front tyres, and 9.50x16 rear tyres. The wheelbase is 58 inches (1470 mm). The tractor is compatible with a 56" front-mount two-stage Mahindra MXSB-56 snowblower, 62" front blade Mahindra MXBL-62, Mahindra ML202 front end-loader with a maximum lift height of 75" (1900 mm), and Mahindra MB60A backhoe with maximum digging depth of 80" (2030 mm).
| Diesel Engine Troubleshooting |
| Engine starts hard or doesn't start |
Air in fuel tank - Bleed fuel tank.
Fuel filter plugging - Replace filter element.
Defective injection nozzle - Inspect nozzles and replace if necessary.
Dirt or water in fuel system - Drain water or flush dirt from the system.
The valve clearance is incorrect - Check and adjust as required.
Defective fuel injection pump - Install a new fuel pump or repair.
| Engine starts but then stalls |
Air filter clogged - Service air cleaner.
Clogged fuel filter - Change the filter element.
Fuel injection pump leakage - Check the fuel injection pump for leaks and fix it.
Clogged or defective injectors - Replace fuel injectors.
Fuel injection pump is defective - Rebuild or change fuel pump.
| Engine stops running suddenly |
Engine has not warmed up to the recommended temperature - Warm up to required temperature.
Dirty fuel filter - Service the filter.
Air in the fuel system - Air bleeding.
Defective injection nozzle - Replace injection nozzles.
Fuel injection pump timing is not adjusted - Check the fuel injection pump timing adjustment.
| Engine stops when idling |
Low idle speed set incorrectly - Need to adjust idle speed.
Damaged fuel injection pump - Install a new fuel pump or repair.
Dirty or defective injectors - Clean fuel injectors or change it.
Incorrect valve clearance - Adjustment procedure required.
| Reduced engine power |
Plugged air cleaner - Carry out maintenance on air filter.
Faulty fuel injection nozzles - Change fuel injection nozzles.
Incorrect fuel injection pressure - Adjust to proper pressure.
Valve clearance is not correct - Adjust valve clearance.
Low idle speed setting is not correct - Normalize low idle speed.
Fuel lines or hoses are dirty - Fuel hoses and lines must be clean.
Leaking cylinder head gasket - Install new cylinder head gasket.
Damaged or leaking piston rings - Replace piston rings.
| Engine overheated |
Not enough coolant - Fill radiator to proper level and check components for faults.
Engine oil level low - Fill up the engine oil.
Radiator core is clogged or radiator cap is leaking - Clean radiator or replace cap.
Fan belt is broken or worn - Replace the fan belt.
Engine overloaded - Reduce load on the engine.
| Oil pressure too low |
Not enough oil in the engine - Check oil level and add oil as required.
Engine oil filter is plugged - Service or replace engine oil filter.
Wrong oil viscosity - Use proper viscosity oil.
Excessive oil clearance of crankshaft bearing - Bearing replacement required.
Oil pump failure - Inspect and change as required.
| Engine noise or knocking |
Engine oil insufficient - Fill up the oil to required level.
Engine is cold - Normalize the temperature by warming up the engine.
Wrong setting of fuel injection pump timing - Adjust as recommended.
Low idle speed setting is incorrect - Adjust as required.
Dirty or defective injectors - Clean or replace fuel injectors.
Misaligned or defective connecting rod Connecting rod must be aligned or replaced.
Pistons are scored or worn - Replace the pistons as required.
| Hydrostatic Transmission Troubleshooting |
| HST transmission makes noise |
Transmission fluid is dirty or fluid level is too low - Add fluid to the correct level or fill the transmission with fresh fluid.
Speed control linkage is worn or unadjusted - Change or adjust linkage.
Relief valve is stuck - Replace valve as required.
Excessive loading - Reduce transmission load.
Defective or worn transmission parts - Change or repair defective parts.
| Low power |
Transmission fluid insufficient - Fill the transmission housing to proper fluid level.
Stuck relief valve - Replace valve as required.
Speed control linkage is defective or unadjusted - Replace or adjust linkage.
| Hot transmission oil |
Transmission oil insufficient - Fill the transmission housing with oil.
Transmission oil filter is clogged - Clean or change transmission oil filter.
Cooling components are defective or plugged - Check all cooling components and change or repair if required.
Transmission overload - Reduce transmission load.
| Transmission fluid leakage |
Seals or gaskets are worn - Install new seal or gaskets.
High internal transmission housing pressure - Check hydrostatic transmission components for defect or damage and change if necessary.
Clogged transmission fluid return pipe - Clean or change return pipe.
| Hydraulic System Troubleshooting |
| Insufficient hydraulic fluid pressure |
Hydraulic oil level low - Check and refill the hydraulic oil.
Clogged hydraulic oil filter element - Clean or replace the hydraulic filter.
Hydraulic pump is faulty - Replace or repair hydraulic fluid pump.
Hydraulic control valve block is not set properly - Use the proper setting.
Hydraulic cylinder is broken - Change or repair hydraulic cylinder.
Leaks in hydraulic pipes - Check the system and repair leaks.
| Hydraulics overheating |
Defective main relief valve - Relief valve must be changed.
Hydraulic fluid type is wrong - Use correct type of hydraulic fluid.
Dirty hydraulic fluid - The fluid must be changed.
Air in hydraulic lines - Bleed hydraulic lines.
| Hitch not lifting or hitch lifts slowly |
Excessive loading on the hitch - Load needs to be reduced.
Hydraulic oil level low - Check and refill the hydraulic oil.
Dirty hydraulic fluid filter - Service or replace the hydraulic filter.
Hydraulic pump malfunction - Replace or repair hydraulic fluid pump.
Main relief valve is defective - Change relief valve.
Damaged hydraulic spool valve - Repair or change hydraulic valve.
Hydraulic cylinder failure - Replace or repair hydraulic cylinder.
Loose or broken suction line - Tighten the pipe or replace it.
| Three-point hitch cannot be dropped or dropping is too slow |
Incorrect setting hydraulic control valve - Use the correct adjustment.
Hydraulic cylinder failure - Repair or change hydraulic cylinder.
The hitch is not adjusted - Adjustment is required.
Lift arm shaft is worn - Change the shaft.
| Hitch lift or lower is jerky |
Air in hydraulic pipes - Bleed hydraulic pipes.
Hydraulic fluid is dirty - Hydraulic fluid change required.
Hydraulic pump malfunction - Change or repair hydraulic oil pump.
Faulty hydraulic control valve - Install a new hydraulic valve or repair it.
Damaged hydraulic cylinder - Install a new hydraulic cylinder or repair it.
| Steering Troubleshooting |
| Steering wheel is difficult to turn |
Damaged or incorrectly assembled steering column - Replace steering column or assemble correctly.
Air lock in hydraulic steering system - Air-bleed steering system.
Incorrect toe-in - Adjust toe-in wheels.
Uneven tyre pressure - Inflate the tyres properly.
Steering pump is worn - Install a new steering pump.
Steering pump control valve is worn or stuck - Clean or install new control valve.
Low steering oil level - Fill up the steering oil.
| Excessive steering wheel free play |
Steering column shaft or coupling is worn out - Replace defective component.
Steering pump malfunction - Repair or change steering pump.
Steering linkage components are loose or worn - Repair or change steering linkage.
| Front wheels wander to right or left |
Front tyres wear unevenly - Change the tyres.
Improper toe-in - Adjust toe-in wheels.
Worn or loose steering linkage assembly - Inspect and replace as required.
Incorrectly adjusted or worn front wheel bearings - Adjust correctly or replace bearings.
| Electrical System Troubleshooting |
| Battery cannot be charged |
Corroded or loose cable connections - Service or tighten connections.
Faulty battery terminal connectors - Replace terminal connectors.
Battery is worn - Battery change required.
Belt is defective or loose - Install a new belt or adjust belt tension.
| Starter motor cranks slow |
Low battery voltage - Battery needs to be recharged.
Battery is not holding charge - Service charging system or change battery.
Battery cables are disconnected or terminals are faulty - Connect cables correctly or replace terminals.
| Starter will not crank |
Battery is drained or worn - Battery needs to be recharged or replaced.
Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required.
Battery power is low - Recharge the battery.
Faulty starter motor - Change or repair starter.
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| Farm Tractors Technical Specifications |