treadle vac master cylinder

Posted by Bob On 2011/10/10 15:31:32

I hate asking this for fear what I will find out. I cleaned out the treadle vac master cylinder reservoir. Dead center 12 oclock position on the top of the cylinder there is a chip missing in the cylinder wall where the piston sits. Looks like a little key way passage Its even with the drain hole in the top of the master cylinder reservoir and right in front of the compensator value. Tell me this is suppose to be there.

Attach file:

---

  (71.25 KB)