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Farmall & IHC Tractors Discussion Board

Re: Breaking in an overhauled motor


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Posted by Owen Aaland on January 01, 2013 at 06:43:25 from (216.47.35.195):

In Reply to: Breaking in an overhauled motor posted by 756puller on December 31, 2012 at 12:48:46:

Taken from an older IH service manual for the D282 engine:

Start the engine and operate at approximately one half throttle until operating temperature is reached.

Stop the engine, retorque the cylinder head bolts and readjust the vlave lever clearance.

Attach tractor to a dynometer and operate at full throttle part load until the engine temperature has stabilized.

Caution: New engines or newly overhauled engines must not be loaded enough to bring the engine speed below rated load speed except momentarily.

Important: It is very desirable that the tractor engine be operated under load for the first few days of operation.

Never operate the engine at no load for an extended period of time during break-in, however it is also important not to overload the engine during this period. The tractor operator should be instructed in this break-in procedure. Also caution the operator to follow instructions in the Operators Manual under maintenance for valve clearance adjustment on a new engine.

This is what a newer service manual has:

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