Check to make sure the vaccuum lines aren't shot before changing the servo (aka shut off valve) -- I always call these a servo rather than an solenoid because a solenoid moves a piece of iron with a magnetic field (Physics 201, 1978) while a servo moves an actuator via some kind of a motor or diaphram, not restricted to movement of a iron rod in a magnetic field.

You will want to take the windsheild reservoir out for room.

If the screw was a few degrees counterclockwise of where it is, you would leave the ALDA on and save a bunch of time.

I couldn't find a short swivel (the kind were the socket is part of the swivel), and my brother's little Snap-on set was too long to get under the ALDA. If you can find a short swivel, you won't need to take the ALDA off. This will save some time!

The diaphram has a small hole in it. It is not repairable. Mine would actually hold off the car, but not on -- wouldn't pull down hard enough to shut the car off, just had to touch the stop lever to kill it. Not like a W115 or W123!

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!