Re: 56 Patrician bought off ebay

Posted by Randy Berger On 2013/9/27 20:52:33

From my Caribbean blog;
Upon closer inspection I find I have a modified oil pump and I think Packard did it. That means there are three different oil pumps.
1.The pump used in 1955 and part of 56 which has the relief valve spring contained by a small cup and a cotter pin.
2. A pump which still bears the same casting number 440662, but was never drilled for a cotter pin. The casting is threaded for a bolt with a gasket on it. Packard must have been using up the earlier castings but modifying them for a sealed fit at the pressure relief port. I can't blame Packard for not wanting to scrap a bunch of castings.
3. The modified pump mentioned in TSB 56T-20 which has the casting number 64xxxxx. Actually they could be referring to pump number 2 because it has the threaded plug.

So I have pump number 2 and if my reasoning is correct, it SHOULD have the long valve and spring. It was gunked up badly and maybe the valve was stuck??? I think I'll stick with the plan and install the pump from 3M.
Anyone else have a different take on this?
I think I'm suffering from information overload.
Does any one think Mike's concern for my wound was sincere?