Re: '55 Oil pump shaft wear

Posted by Jack Vines On 2014/3/13 10:05:16

Whichever way you go, definitely do not re-install that intermediate drive shaft. It's the worst worn I've ever seen.

Check the distributor also. When the intermediate shaft is so trashed, there is usually some corresponding wear on the mating surface.

There had to be some serious resistance somewhere to cause that damage. When you disassemble the pump, shoot some photos of the inside of the body, the gears and the vacuum pump driveshaft.

Since the pump is out and the engine is apart, if you want to retain the vacuum pump, I'd recommend my rebuilt Packard pump with the longer pump body bearing.

If you choose not to retain the vacuum pump, go with the Oldsmobile conversion kit.

jack vines