I wouldn't use any force or heat. The piston, suction disk and
outer chamber are all very close machined fits, and if you
distort them even the slightest they'd be ruined. A good
penetrating oil might help.
Beyond that, I can add much.
bs
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Bob Spidell San Jose, CA bspidell@comcast.net
'67 Austin-Healey 3000 '56 Austin-Healey 100M
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Subject: SU - Piston Rod Stuck in the Suction Chamber
>I have two sets of original type H4's for my 100-Six and I am going to
> rebuild the spare set for putting back on the car. On both, the piston
> rod/suction disk is firmly stuck in the suction chamber. Before I mess
> something up and apply brut force, any other suggestions? I am thinking
> finding a dowel or other rod and knocking it out through the oil hole.
>
> I just got a Harbor Freight ultrasonic cleaner, so I am going to try that
> out after I get the first one apart.
>
> Patton
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