On Mon, 22 Aug 2011 09:17 -0400, "Allan Streib" <str...@cs.indiana.edu> wrote:
> As far as I can tell, the pump has a main line running directly to the > brake booster, and a smaller line for other accessories. This is a > bit different than on my W123 where the accessories are connected to > tees in the main booster line. > > I plugged the smaller line and plugged the MityVac into the end of the > brake booster line. Revving the engine I could get a few inches of > vacuum but that was it. To follow up, I did verify that the brake booster holds vacuum. I tested the line that runs to the injection pump (shut-off, I guess) and it would hold 10" of vacuum and then it sounded like a regulator was releasing anything above that. In other words I could pump it down to 10" and then I would hear a bit of a wheezing sound on subsequent pumps and it maintained about 10" of vacuum on that line. I did try pumping down the rest of the accessory circuits, with no success. I don't know how big the reservoir is and whether I just didn't try long enough (hands were getting tired) but suspect that there are probably other leaks in the doors locks or ACC. Allan -- 1983 300D 1979 300SD _______________________________________ http://www.okiebenz.com For new and used parts go to 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
