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Getting an MT4 to 40 taper sleeve off a Wohlhaupter UPA-3 boring head

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Hey y'all,

I found a Wohlhaupter UPA-3 boring/facing head for my Deckel FP2. From the story the seller gave me, this should be 1969 vintage or thereabouts, and the previous owner bought it new for his hobby shop. It was absolutely filthy with a black paste-like substance, which is because apparently the previous owner enjoyed machining a particular kind of black wood.
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It cleaned up OK on the outside and it mostly moves well though there's some stickiness or rough spots, presumably due to detrium in the head. I'd like to do a proper disassembly and cleaning, but to do that I think I'll have to get the MT4-40 taper sleeve off it. This probably hasn't been off the boring head since the before the Beatles broke up.
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I'm thinking penetrating oil and then using some kind of puller from the top of the shank to under the drive collar on the sleeve.
Are there any tricks to this that I should be aware of?

Siggi
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