B275 engine building question

Anonymous-0 · Jul 18, 2008

Hi:

On the 144 diesel engine, the service manual does not specify which side the new piston and con rod marks are to be facing.

I have never had to guess on this, so did not mark them or note them.

There are part numbers on the new piston crowns,but no notch or arrow and I assume these go to the front of the engine.

The con rod numbers should go to the left (port or "driver's side" in car terms) side? Or the opposite?

Any hints there?

Colin

tractorsam · Jul 18, 2008

First off, I've never had one of these apart. On other IH's I've had apart (all North American gassers) the rod marks were reinstalled to face the camshaft. On the pistons are there no indents either for the valves or for the swirl chamber of the fuel. You can normally look at those and referring to the head determine the correct orientation. tractorsam

RAB · Jul 18, 2008

Timing side, or end, of the engine is the normal convention for any marks for rebuild or numbering of cylinders for timing. The cam is the 'brain' of the engine (ignoring electronic systems separate from the engine).

Regards, RAB

JDemaris · Jul 18, 2008

The tech manual for the BD144 clearly states- all the ID numbers on the rod and cap must face opposite camshaft side of the engine. There are other similar sized IH engines that are just the opposite - so you can go by "normal convention."
E.g. , gas 424, 444, 2424, and 2444 has the numbers ON the camshaft side.

I've got four tractors with the BD144 - two with the inline CAV pumps with air-governors - and two with the rotary CAVs. I rebuilt all but one. The engines with the rotary CAV pumps are much better starting tractors.

JDemaris · Jul 18, 2008

I mistyped (or mis keyboarded). I meant to write that you CANNOT go by normal convention with these little IH engines.

trucker40 · Jul 18, 2008

Never worked on one of those.All of the inline diesels I have worked on,Detroit,Cummins,Cat,mostly the numbers on the rod go to the side the cam is on.Usually there is a mark of some kind on the piston for the front.You need to ask where you get the parts from,if they know,if not,call a shop and ask them.Its important to have them right.
Usually,but not all the time,if you put the rod in wrong,it wont bolt up,if it does bolt up,the motor may not turn over.The radius area of the crank has to have a little clearance from the bearing to turn on the crank.There are motors you can put the rod in either way,dont remember what motors they were,but you still need to put the rod in the right way.Its also important that the piston is in the right way.Good question,sorry my answer is not better.

B275 engine building question

Anonymous-0

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tractorsam

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RAB

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JDemaris

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JDemaris

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trucker40

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