Randy, How did you hone the bore?
Dan > On Aug 5, 2015, at 5:41 PM, Randy Bennell via Mercedes > <firstname.lastname@example.org> wrote: > > I ordered a rebuild kit for the mc in my 1976 115 300D. > It took a while to show up but I got it. It is Raybestos brand and says that > it was made in Australia. > I am struggling to get the kit installed however. It was a bit of a bear to > get apart and is also challenging me in putting it back together. No problem > taking the mc out of the car. > It is amazing how stretchy the rubber parts are. Even after the Lord only > knows how long the existing parts had soaked in brake fluid, they were not > easy to get off of the metal plunger. It took some prying to get them off. > Then one has to stretch the new ones onto it. Not easy. I cut the nozzle off > of a big caulking tube and used it to slide the rubber cup up on over the > ridge on the metal plunger. I tried to just roll it on with my fingers but > that is not easy when trying to do it to a small rubber doodad soaked in > brake fluid while wearing rubber gloves. Using the nozzle from the caulking > tube permitted me to stretch the rubber cup up to about the size of the metal > plunger diameter so that I could slip it over the ridge into the groove. > While doing so, I hoped I was not doing it any harm. I guess, time will tell. > > Now that I have that part together, my next challenge is to get that plunger > with the rubber cups on it to slide into the bore on the mc casting. There is > no way to do it with one's fingers as the smaller bore is at least 2 inches > down inside the larger bore on the stepped housing. I think the answer is to > find some tubing the right size and slip the plunger into it and reach the > whole mess down inside and get it lined up with the bore and then push the > plunger out of the tubing into the bore. I measured the plunger and it is > .749" so pretty close to 3/4" and 3/4" inside diameter pipe ought not to be > too hard to find. I need to poke around in my junk and see what I can come up > with, or head to a hardware store with my digital calipers to see what I can > find. > The service manual on the CD indicates that MB likely provided a rebuild kit > for these at one time that came essentially assembled with a new plunger > inside a plastic tube. One shoved the tube into the mc housing and just > pushed it in. At least that is what it looks like to me in the photos. > I am not so lucky. I just got a small bag of loose parts in a box. The price > was right and the mc looks good so it seemed to me to be a good thing to try > to keep the car pretty much original. However, I have paid more in insurance > for the period it has been off the road while I waited for the parts and then > while it waited for me to work on it, than it would have cost to have a > rebuilt one almost immediately. Such is life, "live and learn" hopefully. > > RB > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com