That's right the drip/bubble method only works on 617 and older because you have to have the hand pump. For 60x you need the 2 light tester deal which is what I use.
Sent from my iPhone > On Sep 20, 2015, at 10:31 AM, Curly McLain via Mercedes > <mercedes@okiebenz.com> wrote: > > The drip method is described in the OM621 manual, and I think it may be in > the 616/617 manuals. I used the primer pump to provide pressure. It is done > with Diesel fuel. I have never used air for timing the Ip. On the OM603, I > have only used the static timing lock. > > The theory of the drip method is that when the plunger is not in delivery > mode, the fuel flows freely out the drip tube. At the start of delivery, the > plunger blocks the chamber and the free flow stops. At that point, you read > the position on the crank pointer. > > I developed my own method for timing om621/616/617. It does NOT involve > removing the pin on the DV. I take a straw and blow the fuel out of the > flared part of the connector on the IP (DV holder) for the #1 cyl. turn the > engine very slowly when you are coming up to the timing mark. When the fuel > just begins to rise, the delivery is starting. I set the time 1 to 2 degrees > in advance of the book spec to allow for the fact that delivery actually > started, and that the DV spring had to be overcome. It has always worked on > the cast iron head engines. > > I don't like disturbing the DV just to do timing. It increases the > possibility of introducing contaminants (grit etc) into the IP. Plus I never > had extra seals and orings around to reseal the DV. > > >> My approach may have been flawed, I was using my air compressor with the >> regulator turned down really low, maybe I should have used lung power? >> >> Maybe air is the wrong working medium, and one should use diesel fuel >> instead? >> -- >> Max Dillon >> Charleston SC >> '87 300TD >> '95 E300 > > _______________________________________ > 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
