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Old 05-26-2018, 12:57 PM   #1
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Perkins Heat Exchanger Tube Stack Removal

I am replacing a leaking tube stack bundle on my 6.3544M Perkins 200. I have both end plates removed and am working on getting the stack freed up to remove it aft. So far I have applied PB blaster and some tapping with a block and hammer, if anyone has removed this part before I would appreciate any tips.
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Old 05-26-2018, 01:23 PM   #2
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Do you have it removed from the engine? If this is an integrated manifold/cooler it will be a lot of work to remove, but it may be the only way.

Then stand it up on end and spray PB Blaster around the outer edge at the joint. Let is sit for a day while spraying periodically. Reverse and do the same thing on the other end.

Then tap with a block of wood against the tube sheet.

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Old 05-26-2018, 02:15 PM   #3
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remove cooler from engine, then separate each cooler, trans,oil,turbo{if you have one} Once separated , remove corrodion from housing and bundle. pour vinager around edge and let work. use the block of wood and tap with mallet. may take time but will work its self loose.
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Old 05-26-2018, 04:09 PM   #4
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If you can, heat the vinegar, it will work better. White vinegar works very well.

Another possibility, toilet bowl cleaner, the acidic kind. Very cheap from dollar store. I was cleaning the toilet and it smells like phosphoric acid.
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Old 05-26-2018, 04:19 PM   #5
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Greetings,
Mr. S. Welcome aboard. Potentially silly question but is the bundle meant to come out? I think the bundle on our Lehman is soldered in place or I could be completely wrong about that.
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Old 05-26-2018, 09:08 PM   #6
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yes they do come out of the aluminmim housing. New O-ring are available from Perkins and a new bundle can be made.Housings not so much. Be careful !!!
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