Hanging Plug

[Pawel66]

Also I noticed you do not have the "self centering" nuts on the engine linkage support.

Joe, if you were so kind: what do you mean by "self centering" nuts on the engine linkage support? May I ask to share more on this - which nuts and what are they supposed to be? New topic to me...

recips, if indeed the valve cover is difficult to remove because of the hood latch, this may indicate that the rear engine suspension pad (or the transmission suspension pad if you will) is low - worn or out of adjustment, which, in turn, may lead to front of the valve cover touching the hood (bonnet) from underneath.

[ja17]

The linkage rod which crosses over the valve cover is supported by a stand on the injection pump side of the engine. The stand is held in place with two "self centering" nuts. These are also known as ball end nuts #127 990 01 51. The curved "ball end" centers itself in a pocket when tightened. In this way the linkage support is exactly and precisely attached in the exact same place as before. If standard nuts are used instead, The linkage may not return to its correct position , throwing the fuel mixture out of adjustment. Often times these are lost during repairs and replaced with standard nuts. In addition often times these special nuts are installed backwards (ball end out), also causing improper alignment. I'm sure someone has some good photos ?

[66andBlue]

...... In addition often times these special nuts are installed backwards (ball end out), also causing improper alignment. I'm sure someone has some good photos ?

Here you go:

[Benz Dr.]

Someone replaced the TTS with a thermo switch that activates the vacuum switch over valve for distributor timing with a cold engine. Easy to change back to what it should have.

[Pawel66]

Joe, Alfred, thank you very much for your kind responses. Clear now. I ordered the correct nuts.