Crankcase, Crankshaft, Main Bearings & Flywheel

RUNNING-IN AFTER OVERHAULING

A completely overhauled tractor should undergo a thorough check over before leaving the service station.

Make sure that all parts are properly installed and all bolts are drawn up tight. Carefully inspect all units, check adjustments as far as accessible and correct if necessary. Remember, it is better to check three times than commit one error.

Fill the transmission case with specified lubricant and grease the tractor liberally in accordance with the lubrication guide of the “Operators Manual”. Be sure that all instruments and controls function properly before preparing the engine for running-in.

Fill the engine crankcase, the fuel injection pump and the governor housing with specified lubricant. Fill the cooling system.

Fill the fuel tank with Diesel fuel and vent the fuel system properly. Start the engine in the conventional manner and let it run at medium speed for about five minutes. Closely observe the engine to see that all parts work freely and the engine operates smoothly.

Check the oil pressure.

With the engine stopped check the crankcase oil level and make sure the pressure feed lubrication functions properly and no bearing is starved. Restart the engine and let it run at medium speed for approximately one hour.

If new cylinder sleeves and pistons were installed it is necessary to run-in for another hour during which the engine is accelerated to full speed for short periods.

Closely observe the engine during the running in time and note any faults for later correction.

When time is up, stop the engine and readjust as follows:

Retighten injection nozzle stud nuts.

Check fan belt tension.

Check oil in engine crankcase.

Draw up all bolts and nuts in accordance with the tightening scale.

Check for evidence of oil leakage and inspect all hose and pipe connection for leaks.

Correct faults observed during the running-in time.

Finally, a trial run is made to test chassis and transmission.

This trial run should last at least 15 minutes and consist of the following tests:

Testing the engine clutch.

Testing the five forward speeds and the reverse speed.

Testing the steering.

Testing the brakes.

Testing the electrical system.

Make a final test with tractor under load.

It is important that faults revealed by these tests be remedied without delay.

After an overhaul every part or unit of the tractor should function properly and be up to the standards and requirements described in the various sections of this manual. Only then can you expect ready and efficient performance and trouble-free operation the year round.