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Mahindra eMax 25S Troubleshooting

The Mahindra eMax 25S is a 4WD sub-compact utility tractor from eMax S series. This model was manufactured from 2017 to 2019. The components of Mahindra eMax 25S powerline system: a 61.5 cubic inches (1L) Daedong 3C100LF four-stroke three-cylinder indirect injection naturally aspirated liquid-cooled diesel engine with a rated power of 25 Hp (18.5 kW), and hydrostatic transmission with infinite forward and reverse gears. The maximum travel speed (forward/reverse): 10.2 mph (16.4 km/h) and 10 mph (16 km/h).

The open center hydraulic system includes a gear pump with rated fluid flow of 4.5 gal/min (17 l/min). The Mahindra eMax 25S is equipped with a hydrostatic power steering system, wet disc brakes, 6.00x12 front tyres, and 9.50x16 rear tyres. The wheelbase is 57" (1450 mm). The tractor is compatible with a 60" mid-mount 3-blade side discharge Mahindra 25M mower deck with cutting height of 1-4" (25-102 mm), Mahindra eMax 25L front end-loader with a maximum lift height of 75.3" (1910 mm), and Mahindra eMax 26B backhoe with max digging depth of 76.3" (1940 mm).

Diesel Engine Troubleshooting
Diesel engine hard to start or doesn't start

There is air in the fuel system - Bleed the system.
Fuel filter plugging - Change filter element.
Clogged injection nozzle - Clean or change injection nozzles.
Water in the fuel system - Change fuel and repair fuel system.
Excessive valve clearance - Adjust valve clearance.
Fuel injection pump is damaged - Repair or install new pump.

Engine stalls after starting

Air filter is dirty - Change air filter element.
Fuel filter element is dirty - Clean or change the filter.
Fuel injection pump has loose connections - Tighten the connections.
Fuel injector fault - Clean fuel injectors or change it.
Fuel injection pump is not working correctly - Change pump or rebuild it.

Engine stalls while running

Coolant temperature is low - Warm up to required temperature.
Fuel filter plugged - Replace the filter element.
Air in fuel tank - Bleed fuel tank.
Clogged injection nozzle - Test injection nozzles and change if necessary.
Incorrect adjustment of fuel injection pump timing - Set up as recommended.

Engine stalls when idle

Low idle speed setting is not correct - Test and adjust.
Fuel injection pump is defective - Repair or install a new fuel pump.
Defective fuel injectors - Clean or replace fuel injectors.
Valve out of adjustment - Have it adjusted.

Engine power is too low

Dirty air cleaner - Replace air filter element.
Faulty fuel injection nozzles - Service or change injection nozzles.
Improper fuel injection pressure - Check the fuel injection pressure and adjust if necessary.
Excessive valve clearance - Check and adjust.
Low idle speed set incorrectly - Test and adjust.
Fuel lines or hoses are clogged - Clean fuel system hoses and lines.
Worn cylinder head gasket - Install new cylinder head gasket.
Piston rings are damaged or leaking - Replace the piston rings as required.

Engine overheats

Coolant level is low - Add coolant fluid and inspect the cooling system for leaks.
Engine oil level is low - Fill the crankcase with engine oil.
Defective radiator cap or clogged radiator core - Clean radiator or change cap.
Loose or damaged fan belt - Replace the fan belt.
Diesel engine overloaded - Shift to lower gear or reduce the load.

Low oil pressure

Insufficient engine oil - Add oil as required.
Engine oil filter is plugged - Change or service engine oil filter.
Different type of engine oil - Fill up with the correct oil viscosity.
Incorrect oil clearance in main bearing - Change bearings.
Oil pump malfunction - Inspect and change as required.

Abnormal engine knocking or noise

Not enough engine oil - Fill up the engine oil.
Engine has not warmed up to the recommended temperature - Warm up to required temperature.
Fuel injection pump timing is not adjusted - Adjust fuel injection pump as required.
Too low idle RPM - Adjust low idle speed.
Damaged or clogged injectors - Inspect fuel injectors and change as required.
Connecting rod is worn or misaligned - Connecting rod needs to be replaced or aligned.
Pistons are scored or worn - Replace the pistons.

Hydrostatic Transmission Troubleshooting
Hydrostatic transmission is excessively noisy

Transmission fluid is dirty or fluid level is too low - Pour fresh fluid or add transmission fluid to proper level.
Speed control linkage is worn or unadjusted - Change or adjust linkage.
Relief valve is damaged - Change relief valve.
Transmission overloaded - Reduce transmission load.
Defective or worn transmission parts - After disassembling and inspection, change defective components.

Power is insufficient

Lack of transmission oil supply - Add oil to the transmission housing.
Relief valve malfunction - Change relief valve.
Speed control linkage is worn or unadjusted - Adjust or change linkage.

Transmission oil overheating

Transmission fluid insufficient - Check and refill the transmission fluid.
Transmission fluid filter element clogging - Service or replace the transmission fluid filter.
Damaged or clogged cooling components - Inspect all cooling components and replace or repair if necessary.
Transmission overload - Load needs to be reduced.

External oil leaks

Worn seals or gaskets - Replace worn seal or gaskets.
Internal transmission housing pressure is too high - Change defective parts.
Clogged oil return pipe - Clean or change return pipe.

Hydraulics Troubleshooting
Low hydraulic system pressure

Low hydraulic fluid level - Checking hydraulic fluid level and add if necessary.
Clogged hydraulic fluid filter element - Clean the hydraulic filter or install new filter element.
Damaged hydraulic pump - Replace or repair hydraulic fluid pump.
Hydraulic control valve block is set improperly - Set properly.
Hydraulic cylinder is defective - Replace or repair hydraulic cylinder.
Leaks in hydraulic lines - Identify leaks in the system and repair it.

Excessive hydraulic system heat

Defective main relief valve - Relief valve need to be replaced.
Improper hydraulic fluid type - Use the proper type of hydraulic fluid.
Dirty hydraulic fluid - The fluid must be changed.
Air in hydraulic pipes - Bleed hydraulic pipes.

Three-point hitch cannot be lifted or lifting is too slow

Excessive load on hitch - Reduce loading.
Insufficient hydraulic oil - Fill the system to proper hydraulic oil level.
Hydraulic fluid filter element is clogged - Clean the hydraulic filter element or replace if necessary.
Faulty hydraulic pump - Replace or repair hydraulic fluid pump.
Main relief valve is defective - Relief valve replacement required.
Hydraulic control valve block is defective - Repair or change hydraulic valve.
Hydraulic cylinder failure - Repair or install a new hydraulic cylinder.
Suction line is disconnected or broken - Replace or connect correctly.

3-point hitch won't lower or lowers slowly

Incorrect setting hydraulic spool valve - Use the correct setting.
Hydraulic cylinder not working - Change or repair hydraulic cylinder.
3-point hitch is out of adjustment - Adjustment is required.
Lift arm shaft is damaged - Replace the shaft.

Hitch lifting or lowering is jerky

There is air in the hydraulic system - Bleed hydraulic system.
Dirty hydraulic oil - The oil must be changed.
Faulty hydraulic pump - Replace or repair hydraulic oil pump.
Defective hydraulic control valve - Repair or replace the valve.
Hydraulic cylinder malfunction - Change or repair hydraulic cylinder.

Steering System Troubleshooting
Steering is stiff

Improperly mounted or worn steering column - Mount the steering column as required or change it.
Air in steering system - Bleed air from system.
Incorrect toe-in - Check toe-in and correct.
Uneven tyre pressure - Inflate the tyres properly.
Steering pump malfunction - Steering pump needs to be repaired or replaced.
Steering pump control valve is stuck or faulty - Install a new flow control valve or clean it.
Low steering fluid level - Fill the steering system with fluid.

Excessive free play of steering wheel

Steering column coupling or shaft is extremely worn out - Change faulty component.
Hydraulic steering pump is defective - Replace or repair steering pump.
Worn or loose steering linkage joints - Check and change as required.

Tractor is pulling to right or left

Uneven tire pressure - Inflate the tires properly.
Improper toe-in - Check toe-in and correct.
Loose or worn steering linkage components - Check and change as required.
Front wheel bearings are damaged or incorrectly adjusted - Replace or adjust the bearings correctly.

Electrical Troubleshooting
Battery won’t charge

Loose or corroded electrical wiring connections - Tighten or service cable connections.
Faulty electrical terminal connectors - Change terminal connectors.
Worn-out battery - Use a new battery.
Worn or loose belt - Replace belt or adjust belt tension.

Starter turns slowly

Low battery output - Charge the battery.
Battery is not holding charge - Service battery or change it.
Corroded battery terminals or disconnected wires - Connect wiring properly or install new terminals.

Starter is not working

Battery is discharged or worn - Charge or change the battery.
Battery cables are disconnected or improperly connected - Inspect cables and connect properly.
Low battery capacity - Battery needs to be recharged.
Damaged starter motor - Replace or repair starter.



Farm Tractors Technical Specifications
JD 1026R JD 3650 JD 6400 JD 7810
FORD 1320 FORD 2810 FORD 3930 FORD 5600
MF 250 MF 690 MF 3060 MF 6180
NH TC48DA NH M100 NH T7550 NH 8560
CASE IH 495 CASE IH 1255XL CASE IH 2140 CASE IH 2294