Home / Farm Tractors / Mahindra Tractors / Mahindra 1626

Mahindra 1626 Troubleshooting

The Mahindra 1626 is a 4WD compact utility tractor. This model was manufactured from 2018 to 2023. The components of Mahindra 1626 powerline system: a 80.4 cubic inches (1.3 L) Mitsubishi S3L2 4-cycle 3-cylinder indirect injection diesel engine with a rated power of 25.6 hp (19 kW), and synchro shuttle transmission with 8 forward and 8 reverse gears. The maximum travel speed (forward and reverse): 10.6 mph (17.1 km/h).

The open center hydraulic system includes a gear pump with rated fluid flow of 7.5 gal/min (28.5 l/min). The hydraulic pressure is 152 bar (2200 psi). The Mahindra 1626 is equipped with a hydrostatic power steering system, wet disc brakes, 25x8.5-14 front tyres, and 13.6x16 rear tyres. The wheelbase is 67.3 inches (1700 mm). The tractor is compatible with Mahindra 1626L front end loader with a lift capacity to max height of 1560 lbs (707 kg), and Mahindra 1626B backhoe with a maximum digging depth of 86" (2180 mm).

Diesel Engine Troubleshooting
Engine starts hard or doesn't start

Air in fuel tank - Bleed fuel tank.
Fuel filter plugged - Change the filter element.
Clogged or burnt injection nozzle - Service or change injection nozzles.
Water in the fuel system - Change fuel and repair fuel system.
Valve out of adjustment - Check and adjust as required.
Fuel injection pump is not operating properly - Repair or install new pump.

Diesel starts but then stops

Intake air restriction - Replace air filter element.
Fuel filter element is clogged - Clean the filter or install new filter element.
Fuel injection pump has loose connections - Tighten the connections.
Clogged or defective injectors - Change or clean fuel injectors.
Damaged fuel injection pump - Rebuild or replace pump.

Engine stops unexpectedly during operation

Coolant temperature is low - Warm up to required temperature.
Dirty fuel filter - Service or replace the filter.
Air in fuel tank - Bleed fuel tank.
Defective or clogged injection nozzle - Test injection nozzles and change if necessary.
Timing of fuel injection pump is incorrect - Adjust the pump as required.

Engine stops while idle

Low idle speed setting is incorrect - Correct the settings.
Defective fuel injection pump - Replacement or repair required.
Clogged or defective injectors - Test and replace fuel injectors if necessary.
Valve out of adjustment - Adjust to proper valve clearance.

Lack of engine power

Air cleaner is dirty - Change air filter element.
Faulty or dirty injection nozzles - If necessary, replace with a new nozzle.
Fuel injection pressure is wrong - Test fuel injection pressure and adjust it correctly.
Valve clearance is not correct - Need to adjust valve clearance.
Low idle speed set incorrectly - Correct the settings.
Dirt in the fuel lines or hoses - Fuel hoses and lines must be clean.
Damaged cylinder-head gasket - Change cylinder head gasket.
Worn or damaged piston rings - Install new piston rings.

Engine overheated

Insufficient coolant - Add coolant fluid to cooling system and also check it for leaks.
Insufficient engine oil - Fill up the oil to required level.
Radiator core is clogged or radiator cap is leaking - Clean radiator or install new cap.
Loose or damaged fan belt - Change as required.
Engine is overloaded - Load reducing is recommended.

Low oil pressure

Lack of oil - Fill crankcase to proper oil level.
Plugged engine oil filter - Replace or clean engine oil filter element.
Oil grade or viscosity is wrong - Use oil of correct viscosity.
Excessive crankshaft bearing oil clearance - Bearing needs to be changed.
Oil pump malfunction - Check and replace if necessary.

Engine knocking sound or abnormal noise

Insufficient engine oil - Check and refill engine oil.
Low coolant temperature - Warm up to required temperature.
Wrong setting of fuel injection pump timing - Set it up as required.
Low idle speed setting is not correct - Adjust low idle speed.
Fuel injectors are faulty or clogged - Test and replace fuel injectors if necessary.
Connecting rod is worn or not aligned - Need to align or replace the connecting rod.
Scored or worn pistons - Pistons need to be replaced.

Transmission Troubleshooting
Lack of transmission oil pressure

Low oil level - Need to add transmission oil.
Plugged transmission oil filter (if equipped) - Clean or change transmission oil filter.
Relief valve is damaged - Replace the valve.

Transmission makes excessive noise

Insufficient transmission fluid - Check and refill the transmission fluid.
Transmission oil is contaminated - Change the oil.
Gears are defective or backlash is improper - Install new gears and set backlash correctly.
Bearings are damaged or worn - Replace the bearings.
Shift forks are bent or worn out - Shift forks need to be replaced.
Shaft splines are damaged or worn - Change the shaft.

Hard shifting

Gear shift linkage is rusty or worn - Lubricate or replace shift linkage.
Worn or bent shift forks - Replace the shift forks.
Gearshift mechanism is damaged - Replace or repair the mechanism.
Malfunction or incorrect clutch adjustment - Clutch replacement or adjustment required.

Transmission oil leaking

Too much fluid in transmission - Excess fluid must be drained.
Seals or gaskets are broken - Install new components.

Hydraulic System Troubleshooting
Low hydraulic oil pressure

Hydraulic fluid level low - Add fluid as required.
Dirty hydraulic fluid filter - Change hydraulic filter element or clean if necessary.
Hydraulic pump not working - Repair or replace hydraulic oil pump.
Incorrect setting hydraulic control valve block - Set correctly.
Broken hydraulic cylinder - Repair or install a new hydraulic cylinder.
Leaking hydraulic lines - Inspect hydraulic system for leaks and repair it.

Hydraulic system is overheated

Main relief valve is damaged - Replace relief valve.
Hydraulic oil type is improper - Fill up with the proper type of oil.
Hydraulic fluid is contaminated - Fill up with new hydraulic fluid.
Air in hydraulic lines - Bleed hydraulic lines.

Hitch won't raise or raises slowly

Excessive loading on the hitch - Reduce the load is required.
Hydraulic oil is insufficient - Checking hydraulic oil level and add if necessary.
Dirty hydraulic oil filter element - Clean or replace the hydraulic filter.
Defective hydraulic pump - Repair or replace hydraulic oil pump.
Main relief valve is faulty - Relief valve replacement required.
Hydraulic control valve block is faulty - Repair or replace the valve.
Faulty hydraulic cylinder - Repair or replace hydraulic cylinder.
Suction line is broken or disconnected - Connect or replace.

Hitch won't drop or drops slowly

Incorrect setting hydraulic control valve - Use the correct adjustment.
Hydraulic cylinder is faulty - Replace or repair hydraulic cylinder.
The 3-point hitch is not adjusted - Adjust three-point hitch as required.
Worn hitch rock shaft - Replace the shaft.

3-point hitch jerks when lower or lift

There is air in the hydraulic system - Bleed hydraulic system.
Hydraulic fluid contamination - Change hydraulic fluid.
Defective hydraulic pump - Repair or replace hydraulic fluid pump.
Defective hydraulic control valve - Change or repair hydraulic valve.
Defective hydraulic cylinder - Replace or repair hydraulic cylinder.

Steering System Troubleshooting
Heavy steering

Incorrectly mounted or defective steering column - Mount the steering column correctly or replace it.
Air in steering hydraulic system - Bleed air.
Not adjusted toe-in - Check and adjust toe-in.
Tires have uneven wear - Replace the tires.
Steering pump stopped working - Steering pump needs to be repaired or replaced.
Stuck or damaged steering pump control valve - Clean or replace control valve.
Low steering fluid level - Fill the steering system with fluid.

Steering wheel free play is excessive

Steering column shaft or coupling is worn out - Change faulty part.
Steering pump stopped working - Install a new hydraulic steering pump.
Steering linkage joints are worn or loose - Change or repair steering linkage.

Tractor pulls to left or right

Tires have uneven wear - Replace the tires.
Improper toe-in - Adjust toe-in properly.
Steering linkage parts are loose or worn - Inspect and replace as required.
Improperly adjusted or worn front wheel bearings - Adjust correctly or install new bearings.

Electrical Troubleshooting
Battery won’t charge

Corroded or loose cable connections - Clean or tighten connections.
Battery terminal connectors are defective - Change terminal connectors.
Defective battery - Battery replacement required.
Defective or loose belt - Belt needs to be adjusted or replaced.

Starter cranks slow

Low battery capacity - Battery is drained, recharge it.
Battery drains quickly - Service battery or replace it.
Battery terminals are corroded or wires are disconnected - Check wiring and clean or replace terminals.

Starter is not cranking

Battery is low or faulty - Charge or replace the battery.
Wire harness is disconnected or incorrectly connected - Check wire harness and connect as required.
Battery voltage is low - Battery needs to be recharged.
Starter motor is damaged - Repair or install a new 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