Quote:
Originally Posted by duxthe1
Reverse lights are a better indicator of the correct position than starting in N and P.
There is a 4mm hole in the arm on the switch and in the switch body. This allows you to insert a small dowell to line them up. I forget what position it lines up but I think it's N.
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For my 1990 300E, the NSS alignment hole is right next to and just below the middle rivet. The tranny needs to be in Neutral for everything to line up.
Just remove the electrical plug to gain access to the upper bolt. Loosen the two bolts holding the NSS. Partially, insert the right size Allen wrench (test fit while the NSS is still on you bench. With the trans shift lever in front of in Neutral or Park (depending on your car), slide the NSS and wiggle the wrench until the Allen wrench finds the hole in the NSS and everything lines up with trans lever. Tighten the bolts and reconnect the plug. Start the car and test starting in both Park and Neutral. Done!
Of course all this is in the factory shop manuals... but here's some of my pictures and info from an expert in the matter:
"The reason Benz wants the NSS aligned with the factory bore hole (in the NSS body) and the lever is b/c they want the NSS in N or P (depending on your car) when the transmission detent actuator INSIDE the tranny is at the correct position.
This allows alignment of the NSS to the transmission..NOT the gearshift .
The gear shift lever and linkage is then adjusted so as to line up with the shift gate. Alignment using the shiftgate or back lamps as the base is completely incorrect, as that can lead to the NSS not being aligned correctly with trans gears.
NSS aligns to trans mechanics , and then the ghearshift aligns to the shiftgate.
Using the shiftgate as the alinment will often get the results , but it is not correct and can lead to a short lived NSS."