Two questions about some gizmos under the hood - what are they:

1) 123 070 0046 - this one is located right on my IP - according to the Service Manual it's an Altitude Adjustment box(?!). The shop manual shows how to replace it, but not how to adjust it, though it says that there is a different setting for different altitude (1, 2 or 3) - anybody know how to adjust this thing? It's not obvious...

2) 123 300 1133 - it's got a green cover and sits on the driver's fender right in front of the break booster. Funny thing is that it connects a vacuum-like hose to my ALDA though the banjo bolt - none of the pictures I've seen on ALDA adjustments showed anything else going into the ALDA but on mine it does... anybody know what this is for?!

BTW - made an adjustment to the ALDA settings last night (3/4 turn CCW) and the car came alive from the 'dead' - whoo hoo!

Thanks in advance -
James

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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K

The adjustment of 1, 2, or 3 might be referring to the shim/washers available to adjust the ALDA without using the s crew on top.


Look at this and see if you recognize your parts:
http://dieselgiant.com/mercedesaldaboostsystemservi.htm

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80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250

it might be your over boost protection solenoid.. since the alda line goes to it and out of it.. i dont know the part number but im guessing.. or it could be a vacuum amplifier..