Home / Farm Tractors / Case IH Tractors / Case IH 1694

Case IH 1694 Troubleshooting

The Case IH 1694 tractor was manufactured from 1985 to 1988. The Case IH 1694 driveline system components: AD6.55T 6 cylinders direct injection turbocharged diesel engine and Hydra-Shift partial powershift transmission with 12 forward and 4 reverse gears.

A 329 cubic inches (5.4 L) engine power rating is 112 hp (83.5 kW), and max. torque is 396 Nm (293.3 lb-ft) at 1600 rpm. Max. travel speed (forward/reverse): 19.7 mph (31.7 km/h) and 11.6 mph (18.7 km/h). The open center hydraulic system used a gear pump with fluid flow rate of 10.5 gpm (39.8 lpm).

The hydraulic system pressure is 180 bar (2600 psi). The Case IH 1694 tractor is equipped with a hydrostatic steering system, disc brakes, 13.6x28 front tires, and 16.9x38 rear tires. The wheelbase is 100 inches (2540 mm).

Diesel Engine Troubleshooting
Engine difficult to start or will not start

Air in the fuel system - Air bleeding.
Fuel filter element is dirty - Clean the filter element.
Damaged or dirty injection nozzles - Replace injection nozzles.
Water or dirt in fuel system - Drain, flush, and service the system.
Improper valve clearance - Have it adjusted.
Fuel injection pump malfunctioning - Install a new fuel pump or repair.

Engine starts but then stops

Air filter is dirty - Change air filter element.
Dirty fuel filter - Service the filter.
Problems with fuel injection pump tightness - Inspect fuel injection pump for leaks.
Clogged or defective injectors - Replace fuel injectors.
Fuel injection pump damage - Repair or install new pump.

Engine stops suddenly during operation

Engine not warmed up - Normalize the temperature by warming up the engine.
Fuel filter element is dirty - Service the filter.
Air in fuel system - Bleed fuel system.
Fuel injection nozzles are damaged or dirty - Service or change injection nozzles.
Wrong setting of fuel injection pump timing - Set it up as required.

Engine stalling at idle

Too low idle RPM - Correct the settings.
Fuel injection pump is faulty - Replace or rebuild injection pump.
Damaged or clogged injectors - Replace fuel injectors.
Valve clearance is wrong - Adjust valve clearance.

Lack of engine power

Intake air restriction - Clean air cleaner element.
Clogged injection nozzle - Service or change injection nozzles.
Fuel injection pressure is wrong - Correct the pressure settings.
Incorrect valve clearance - Adjust valve clearance.
Wrong adjustment of low idle speed - Correct low idle settings.
Restricted fuel lines or hoses - Clean fuel system hoses and lines.
Leaking cylinder head gasket - Change cylinder head gasket.
Piston rings are worn or defective - Change piston rings.

Engine overheats

Insufficient coolant fluid - Fill radiator to proper level and check components for faults.
Low engine oil level - Need to add engine oil.
Radiator fins are dirty or radiator cap is defective - Install new cap or clean radiator.
Fan belt slipping or worn - If necessary, replace the belt.
Diesel engine overloaded - Reduce the load or use a lower gear.

Insufficient oil pressure

Oil level is low - Checking oil level and add if necessary.
Engine oil filter is plugged - Change or clean engine oil filter element.
Incorrect engine oil Fill up with the correct oil viscosity.
Crankshaft bearing oil clearance is incorrect - Bearing needs to be changed.
Worn oil pump - Install a new pump.

Engine knocking sound or abnormal noise

Lack of engine oil - Check oil level and add oil as required.
Low coolant temperature - Warm up engine as required.
Fuel injection pump timing is wrong - Use the correct fuel injection pump timing adjustment.
Low idle speed setting is incorrect - Adjust low idling as recommended.
Clogged or defective injectors - Clean fuel injectors or change it.
Misaligned or faulty connecting rod - Alignment procedure or replacement is required.
Pistons are worn or broken - Pistons replacement required.

Transmission Troubleshooting
Insufficient transmission oil pressure

Lack of transmission oil supply - Fill the transmission housing to proper oil level.
Plugged transmission oil filter (if equipped) - Clean or change transmission oil filter.
Defective relief valve - Replace relief valve as required.

Transmission noise

Insufficient transmission oil - Check transmission oil level and add oil as required.
Transmission fluid contamination - Change the fluid.
Gears are damaged or backlash is incorrect - Adjust backlash correctly or replace the gears.
Bearings are cracked or worn - Replace the bearings.
Damaged or worn gear shift forks - Change defective shift forks.
Shaft splines are damaged or worn - Replace the shaft.

Hard shifts

Gear shift linkage is worn or rusty - Replace or lubricate the shift linkage.
Shift forks are worn or bent - Change the shift forks.
Gearshift mechanism is damaged - Replace or repair the mechanism.
Clutch is worn or not adjusted - Clutch adjustment or replacement required.

Transmission oil leakage

Transmission oil level is high - Correct the oil volume.
Seals or gaskets are broken - Change defective gaskets or seal.

Hydraulics Troubleshooting
Hydraulic fluid pressure is low

Low hydraulic fluid level - Add fluid as required.
Dirty hydraulic oil filter element - Service or replace the hydraulic filter.
Hydraulic pump not working - Install a new hydraulic oil pump.
Not adjusted hydraulic control valve - Need to adjust.
Hydraulic cylinder is faulty - Install a new hydraulic cylinder or repair it.
Hydraulic piping is leaking - Check the hydraulic system and fix leaks.

Hydraulics overheating

Main relief valve is damaged - Relief valve need to be replaced.
Improper type of hydraulic oil - Use the proper type of oil.
Contaminated hydraulic fluid - Change hydraulic fluid.
Air in the hydraulic system - Air bleeding.

Hitch not lifting or hitch lifts slowly

Hitch is under excessive load - Reduce loading.
Hydraulic oil is insufficient - Check and refill the hydraulic oil.
Clogged hydraulic oil filter element - Service or replace the hydraulic filter.
Hydraulic pump not working - Change or repair hydraulic oil pump.
Main relief valve malfunction - Install a new relief valve.
Hydraulic spool valve block is defective - Repair or change hydraulic valve.
Hydraulic cylinder not working - Repair or replace hydraulic cylinder.
Loose or broken suction line - Tighten the pipe or replace it.

Hitch not lowering or hitch lowers slowly

Hydraulic spool valve is out of adjustment - Spool valve adjustment required.
Damaged hydraulic cylinder - Replace or repair hydraulic cylinder.
The 3-point hitch is not adjusted - Adjust three-point hitch as required.
Hitch cross shaft is worn - Replace the shaft.

3-point hitch jerks when lower or lift

Air in hydraulic system - Bleed air from hydraulic system.
Hydraulic oil is contaminated - Fill up with fresh hydraulic oil.
Hydraulic pump not working - Install a new hydraulic fluid pump.
Faulty hydraulic spool valve - Replace or repair the valve.
Damaged hydraulic cylinder - Change or repair hydraulic cylinder.

Steering Troubleshooting
Steering is difficult

Improperly assembled or defective steering column - Reassemble or change the steering column.
Air lock in the steering system - Bleed air from system.
Not adjusted toe-in - Adjust toe-in wheels.
Uneven tyre pressure - Inflate the tyres properly.
Steering pump not working - Steering pump needs to be repaired or replaced.
Pump flow control valve is damaged or stuck - Replace or service control valve.
Low steering oil level - Fill up the steering oil.

Excessive steering wheel play

Steering column coupling or shaft has maximum wear - Replace faulty component.
Steering pump failure - Install a new hydraulic steering pump.
Loose or worn steering linkage parts - Inspect and change as required.

Front wheels wander to right or left

Front tires wear unevenly - Change the tires.
Incorrect toe-in - Check toe-in and correct.
Loose or worn steering linkage parts - Inspect and replace as required.
Defective or improperly adjusted front wheel bearings - Adjust correctly or install new bearings.

Electrical Troubleshooting
Battery will not charge

Electrical cable connections are corroded or loose - Tighten or clean connections.
Faulty battery terminal clamps - Terminal clamps should be changed.
Battery is worn - Use a new battery.
Belt is defective or loose - Change belt or adjust belt tension.

Starter motor cranks slow

Low battery output - Battery needs to be recharged.
Battery won’t hold charge - Service or change the battery.
Bad battery terminals or disconnected wiring - Check cable connections and change or clean terminals.

Starter does not work

Battery is discharged or defective - Change or recharge battery.
Wire harness is disconnected or incorrectly connected - Check wire harness and connect as required.
Low battery power - Charge the battery.
Starter motor failure - Change 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