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| 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.
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| Farm Tractors Technical Specifications |