Re: V8 oil pump

Posted by BH On 2011/4/20 12:45:23

Studebaker Serivce Letter No. 936 is roughly the equivalent of Packard's Service Technical Bulletin on same topic - STB 56T-20.

However, this Letter goes on to recommend installation of valve spring baffles, which was covered in SC Vol. 30, No. 1 for Packard dealers. It also recommends inspection for worn rocker levers. I believe such wear involved a hardness issue that had been addressed with dealers previously - in the P&A Letter to Dealers of Mar. 14, 1956.

Also, that this Letter advised Studebaker dealers to follow the same steps for the 56J, as Packard dealers for their own vehicles, erodes the position that the vacuum pump was the source of any oiling issues in Packard installations. The version of Packard's oil pump used with the 56J did not include a vacuum pump, but merely a flat bottom plate.

This Letter is good info for owners of the 56J Golden Hawk.