One oil pump modification now on file

Posted by Jack Vines On 2012/10/22 19:02:10

Thanks to Riki for providing a modified Packard oil pump for examination.

Whomever did this modification started with a 1/2" steel plate, had it Blanchard ground to .4725" thickness,


In the inside of the cover plate, they drilled a stopped hole and inserted a bronze bushing. Then, they pressed the drive shaft through the driven gear .375" to run in the bushing in the cover plate.


This moves the hole in the collar down right next to the pump body.


The cover plate is retained by cap screws.


All in all, not a bad fix, but not the way I decided to do it. I use a cast iron plate, so no bronze bushing is required. Also, I bore out the pump body where the drive shaft runs, press in and ream a longer cast iron bushing to increase the bearing area.

jack vines