If it's like my 82 SD, there is a mechanical (cable or rod) linkage from the throttle that controls the shift points and a vacuum signal (from the injection pump) that controls shift firmness. The vacuum signal uses the vacuum pump, a restriction, and a variable leak (also controlled by throttle linkages) to simulate manifold vacuum of a gas engine.
> -----Original Message----- > From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of > Kevin Kraly via Mercedes > Sent: Thursday, September 19, 2019 7:34 PM > To: mercedes@okiebenz.com > Cc: Kevin Kraly <kevinpadd...@gmail.com> > Subject: [MBZ] 1982 240D Shifting > > We took Hildegard out for a test drive today, and she seems to be running > better since the valve adjustment. The shift points seem to occur at specific > speed and engine RPM rather than throttle positions. All vac lines leading > inside the car are disconnected and capped, but all of the lines atop the > valve > cover seem to be connected, but most likely not in their proper positions. I > know that there’s a VCV on top of the IP that controls the transmission, but > I’m not sure if it’s even working. I may have to take it into a shop since I > can’t > see a pressure gage for vacuum at the different ports. What should I check > first? > Kevin in Hillsboro, OR > 1982 240D 191Kmi, Hildegard > > Sent from my iPhone > _______________________________________ > 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
