________________________________________________________________________________________
| Home / Farm Tractors / Mahindra Tractors / Mahindra 1640 |
Mahindra 1640 Troubleshooting
The
Mahindra 1640 is a 4-wheel drive compact utility tractor from 1600 series. This
model was manufactured from 2018 to 2023. The Mahindra 1640 tractor is powered
by 166.7 cu.in (2.7 L) Mahindra CE-38 4-cycle 4-cylinder direct injection diesel
engine with a rated power of 38.7 hp (29 kW). The Mahindra 1640 is fitted with a
two transmission options: synchro shuttle transmission with 8 forward and 8
reverse gears, or 3-range hydrostatic transmission with infinite forward and
reverse gears. The maximum travel speed (forward/reverse): 14.9 mph (23.8 km/h)
and 12.2 mph (19.5 km/h).
The open center hydraulic system has a gear pump with a rated capacity of 7.7 gpm (29 lpm). The tractors are equipped with 7.00x16 (AG) or 27x10.5-15 (Turf) front tires and 11.2x24 (AG) or 41x14-20 (Turf) rear tires. The wheelbase is 77 inches (1955 mm). Compatible attachments for the tractor: 72" mid-mount side discharge 3-blade Mahindra 1672M mower deck with cutting height of 1.0-4.0 in (25-102 mm), Mahindra 1640L front loader with maximum lift height of 99" (25100 mm), and Mahindra 55B backhoe with maximum digging depth of 95" (2410 mm).
| Engine Troubleshooting |
| Engine starts up hard or won't start |
Air trapped in fuel system - Bleed air.
Clogged fuel filter - Change the filter element.
Fuel injection nozzles are clogged or faulty - Clean or replace injection nozzles.
Water or dirt in fuel system - Drain, flush, and service the system.
Improper valve clearance - Adjustment procedure required.
Fuel injection pump malfunctioning - Repair or install new pump.
| Engine starts but immediately stalls |
Air filter is clogged - Change air filter element.
Fuel filter element is dirty - Install new filter element.
Problems with fuel injection pump tightness - Inspect fuel injection pump for leaks.
Fuel injector fault - Clean or replace fuel injectors.
Fuel injection pump failure - Rebuild or replace pump.
| Diesel shuts off while driving |
Engine has not warmed up to the recommended temperature - Warm up to required temperature.
Fuel filter plugged - Clean or change the filter.
Air in fuel tank - Bleed fuel tank.
Dirty or damaged injection nozzles - Clean or change injection nozzles.
Wrong setting of fuel injection pump timing - Adjust as recommended.
| Engine stalls while idle |
Incorrect low idle setting - Need to adjust idle speed.
Damaged fuel injection pump - Replacement or repair required.
Fuel injector fault - Clean or replace fuel injectors.
Valve clearance is not correct - Check and adjust.
| Engine power is reduced |
Air filter plugged - Replace air filter element.
Fuel injection nozzles are clogged or faulty - Change fuel injection nozzles.
Fuel injection pressure is incorrect - Repair or replace injection pump.
Excessive valve clearance - Adjust valve clearance.
Wrong adjustment of low idle speed - Adjust low idle speed.
Fuel lines or hoses clogging - Service fuel hoses and lines.
Defective cylinder head gasket - Cylinder-head gasket replacement required.
Defective or worn piston rings - Piston rings need to be replaced.
| Engine overheating |
Engine has a lack of coolant - Add coolant fluid and inspect the cooling system for leaks.
Insufficient engine oil - Checking oil level and add if necessary.
Radiator fins are dirty or radiator cap is defective - Clean radiator or install new cap.
Loose or defective fan belt - Belt change is required.
Engine is running overloaded - Change to lower gear or reduce load.
| Oil pressure is low |
Low crankcase oil level - Add oil to the engine crankcase.
Oil filter clogging - Service or change engine oil filter element.
Wrong oil viscosity - Use proper viscosity oil.
Crankshaft bearing has excessive oil clearance - Replace bearings.
Defective oil pump - Remove and inspect oil pump.
| Engine noises or knocks |
Insufficient engine oil - Fill up the engine oil.
Engine has not warmed up to the recommended temperature - Warm up the engine.
Improper setting of fuel injection pump timing - Adjust fuel injection pump as required.
Low idle speed adjustment is incorrect - Adjust low idling as recommended.
Fuel injectors are dirty or defective - Replace or clean fuel injectors.
Connecting rod failure or misalignment - Connecting rod needs to be aligned or changed.
Piston wear or scoring - Replace the pistons as required.
| Transmission Troubleshooting |
| Insufficient transmission oil pressure |
Insufficient transmission fluid - Add fluid to the transmission housing.
Clogged transmission fluid filter (if equipped) - Replace or service transmission fluid filter.
Relief valve malfunction - Install a new relief valve.
| Transmission noise |
Low oil level - Check transmission oil level and add oil as required.
Transmission fluid is contaminated - Transmission fluid change required.
Gears are damaged or backlash is incorrect - Change the gears or set backlash properly.
Bearings are cracked or worn - Change faulty bearings.
Shift forks are bent or worn out - Change defective shift forks.
Worn or stuck shaft splines - Install a new shaft.
| Hard shifting |
Rusty or worn gear shift linkage - Change or lubricate shift linkage.
Worn or bent gear shift forks - Install new shift forks.
Worn out parts of the gearshift mechanism - Replace worn parts.
Worn or unadjusted clutch - Adjust or change the clutch.
| Transmission oil leaks |
Too much fluid in transmission - Excess fluid must be drained.
Damaged gaskets or seals - Install new components.
| Hydrostatic Transmission Troubleshooting |
| Excessive hydrostatic transmission noise |
Transmission oil is contaminated or oil level is insufficient - Add oil to proper level or pour fresh transmission oil.
Defective or not adjusted speed control pedal linkage - Replace or adjust linkage.
Relief valve failure - Change the valve.
Excessive loading - Reduce transmission load.
Worn or defective parts of the hydrostatic transmission - After disassembly and inspection, replace defective components.
| Lack of power |
Insufficient transmission oil - Check transmission oil level and add oil as required.
Defective relief valve - Replace valve as required.
Worn or unadjusted speed control linkage - Repair or adjust linkage.
| Transmission oil over heats |
Low fluid level - Add fluid to the transmission housing.
Transmission fluid filter element is clogged - Service or replace the transmission fluid filter.
Cooling components are clogged or damaged - Check all cooling components and clean or replace if required.
Excessive loading - Reduce loading.
| Transmission oil leaks |
Seals or gaskets are worn - Install new components.
Internal transmission housing pressure is too high - Repair or replace damaged components.
Clogged oil drain line - Clean or replace drain line.
| Hydraulics Troubleshooting |
| Hydraulic fluid pressure is insufficient |
Insufficient hydraulic oil - Check and refill the hydraulic oil.
Hydraulic fluid filter element is clogged - Service or replace the hydraulic filter.
Hydraulic pump is faulty - Install a new hydraulic fluid pump.
Incorrect adjusted hydraulic spool valve - Adjust the spool valve correctly.
Hydraulic cylinder failure - Install a new hydraulic cylinder or repair it.
Leaks in hydraulic pipes - Inspect hydraulic system for leaks and repair it.
| Hydraulics overheating |
Main relief valve is faulty - Replace relief valve.
Incorrect type of hydraulic fluid - Use the correct type of fluid.
Dirty hydraulic fluid - The fluid must be changed.
Air in hydraulic system - Bleed air from hydraulic system.
| 3-point hitch cannot be raised or raising is too slowly |
Excessive hitch loading - The load should be reduced.
Low hydraulic oil level - Fill the system to proper hydraulic oil level.
Hydraulic oil filter element is clogged - Change the hydraulic filter element or service if required.
Faulty hydraulic pump - Change or repair hydraulic oil pump.
Main relief valve is faulty - Relief valve need to be replaced.
Hydraulic spool valve block is faulty - Repair or change hydraulic valve.
Faulty hydraulic cylinder - Repair or replace hydraulic cylinder.
Suction pipe is loose or broken - Repair or replace pipe.
| Hitch won't drop or drops slowly |
Incorrect adjusted hydraulic spool valve - Adjust the spool valve correctly.
Broken hydraulic cylinder - Repair or replace hydraulic cylinder.
Unadjusted hitch - Need to make adjustments.
Worn lift arm shaft - Replace the shaft.
| Hitch lowering or lifting is jerky |
Air trapped in hydraulic system - Bleed air from system.
Contaminated hydraulic oil - Change hydraulic oil.
Damaged hydraulic pump - Replace or repair hydraulic fluid pump.
Hydraulic control valve block is damaged - Repair or change the valve.
Hydraulic cylinder malfunction - Repair or install a new hydraulic cylinder.
| Steering Troubleshooting |
| Steering is stiff |
Incorrectly assembled or damaged steering column - Reassemble the steering column correctly or change it.
Air in the hydraulic steering system - Air-bleed steering system.
Incorrect toe-in - Check toe-in and correct.
Uneven tire pressure - Inflate the tires properly.
Steering pump not working - Check the hydraulic steering pump and change if necessary.
Stuck or worn pump flow control valve - Clean or install new control valve.
Steering oil level low - Add oil to steering system.
| Steering wheel free play is excessive |
Worn steering column shaft or coupling - Change defective part.
Steering pump failure - Check the hydraulic steering pump and change if necessary.
Steering linkage assembly is worn or loose - Repair or replace steering linkage.
| Front wheels wander to right or left |
Tires have uneven wear - Replace the tires.
Improper toe-in - Adjust toe-in properly.
Worn or loose steering linkage assembly - Repair or replace steering linkage.
Worn or incorrectly adjusted or worn front wheel bearings - Adjust correctly or change bearings.
| Electrical Troubleshooting |
| Battery does not charge |
Electrical cable connections are loose or corroded - Clean or tighten connections.
Faulty battery terminal clamps - Terminal clamps should be changed.
Defective battery - Replace the battery.
Belt is loose or defective - Belt needs to be adjusted or changed.
| Starter cranks slowly |
Battery voltage is low - Charge the battery.
Battery is draining quickly - Service or change the battery.
Bad terminals or disconnected battery cables - Connect wires correctly or change terminals.
| Starter is not working |
Battery is discharged or worn - Charge or replace the battery.
Battery cables are disconnected or improperly connected - Inspect cables and connect properly.
Battery power is low - Charge the battery.
Starter motor is damaged - Repair or change starter.
________________________________________________________________________________________
________________________________________________________________________________________
| Farm Tractors Technical Specifications |