I Need Your Help

Danny Prosser · Feb 23, 2017

Ok so I'm rebuilding my 230 3 cylinder Perkins diesel engine and it's getting confusing. First of all I ordered all of my parts from a MF dealer. First I got my parts and there were no camshaft bushings. I called them and they said that engine didn't have them but mine did and I found an article that said some of them did. Next I had 3 valve seals in my gasket set but don't see any on my head. I called them again and they said yes that engine has them on the intake valves. I asked about that on here the other day and someone responded that they are in the set to fit several engines but I didn't need them. That's what I had figured also but in researching I found that some of them do. I don't know if I should but them in or not and which one's are intake the large or small valves? What would you guys do? Thanks for the help this is my first Perkins rebuild.

rockepg · Feb 23, 2017

Is it the AD3.152 engine? Look at your existing block and see if it has cam bearings. Unless someone has retrofitted them in there, possible, it shouldn't have any. Same with the valve seals. The parts book does not show any originally used. I assume the new ones they gave you are just o-rings?

Dieseltech · Feb 23, 2017

Larger valves are the intake..

Danny Prosser · Feb 23, 2017

Thanks Dieseltech and rockepg! I guess I'll pull the valves and lap them a little bit to make sure they seat good. And if there is no valve seals in there I guess I won't put those in. Thanks again fellows I may need to pick your brains again before I'm done!

ptfarmer · Feb 23, 2017

Someone had line bore the cam journals in the block to accept cam bearings if the clearance is too excessive (save from having to get a expensive replacement block). The Continental engines also use the block as the bearings, and are sometimes line bored as well if the block is worn. Gas engine need valve stem seals especially on the intake side since they see a vacuum when you let off the throttle, a diesel doesn't have that problem since a butterfly valve of some sort is not used on the intake. If the block has been hot tanked with the bearings in it they will need to be replaced. You can also have a machine shop knock the old cam bearings out, and put new ones in. The makers of engine bearings make several sizes of "universal" bearings.

rockepg · Feb 23, 2017

When you have the valves out make sure to check the guides for excessive slop. Great time to replace them if needed.

ptfarmer · Feb 23, 2017

(quoted from post at 09:30:08 02/23/17) When you have the valves out make sure to check the guides for excessive slop. Great time to replace them if needed.

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I Need Your Help

Danny Prosser

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rockepg

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Dieseltech

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Danny Prosser

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ptfarmer

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rockepg

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ptfarmer

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