Quote:
Originally Posted by rumb
I thought the NSS was on the firewall by steering shaft/shift linkages. Not on trans at all.
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No they are mounted on the " Automatic " Transmission > I can post Photos later : ( here are some from the Net below )
On the Firewall their is a " Wiring Junction Box " ( not sure of what Mercedes's name for it is > has 12 Volts to start > to Solenoid etc and more .
The Neutral Safety Switch works by the Gear shift selector Rod that Runs from the in car Gear Shift to the Transmission and the Neutral Safety Switch mounts on the Transmission and the Shift Rod runs through it .
Has a " Outer Seal " where the Trans shift rod comes Out and the Shift Lever bolts over and on to the actual Trans Shifter Rod .
So you have (1) a Outer Seal (2) A inner Rubber or perhaps nylon seal washer (3) I have seen on Some of them a Brass small Bushing that fits between the Shift Rod and the seal and also sometimes have seen a tiny O Ring seal that go's over that Bushing .
A Brass Part attaches to the Outer actual Rod that passes Through the Largest NSS Seal ( about a 3/4 of an inch OD Seal ) and is common for this Brass Part to become worn resulting in a ATF Oil leak past it >
The only Fix for that Part would be to replace it or weld it up and re machine it >
You Can Buy a NOS Neutral Safety Switch on line for about $500 + ( rip off in my book )