123.153 (83 300CD turbo)

I was looking at my car before a trip, and I noticed that the

A/C compressor is out of alignment with relation to the crank pulley. From my calibrated eye, it looks to be about 9 degrees off of the plane of the crank pulley. I always remember it straight.

Has anyone dealt with this issue? Please advise.

__________________
Current Stable:
1994 S500 v140, 210k miles, white with grey.

Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now)
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020)
1992 500E 156k mi sold
etc.

There are a couple/few different size spacers used on these compressors. Sounds like your are either missing or not in the correct location. I'd suggest finding another W123 and duplicating where the spacers go.

__________________
Jim

Which plane is it more out of alignment ? Horizontal or Vertical ?

I took some pictures, but its really hard to see what Im talking about.

Normally, both pulleys would be in the same plane, correct?

If you took your hands from underneith the car and put them around the pulley for the ac compressor, and rotated the whole compressor clockwise (from underneith the car) that is how it is misaligned.

__________________
Current Stable:
1994 S500 v140, 210k miles, white with grey.

Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now)
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020)
1992 500E 156k mi sold
etc.

It not plane you should be thinking about...but centerline of the A/C compressor pully should be as close to dead center with the other pulley as is possible. Something it appears it is not right now.

It should also have an axix that is inline with the engine axis .....if the spacers were misinstalled as it appears they can be off on both.

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

we are both thinking of the same alignment issue.

It was ligned up for a long time, but reciently I noticed this problem. All the bolts are there, so I dont know how the shims could be missing.

__________________
Current Stable:
1994 S500 v140, 210k miles, white with grey.

Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now)
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020)
1992 500E 156k mi sold
etc.

My understanding is there is numerous spacers adn shims...all different lengths....if they were not placed in their correct oon the correct locations it will cock the unit and cause alignment issues you describe....

Its likely a shop or the PO did that....it will work like that but not without accelerated wear issues...Its posdsible you just never noticed the fact it is like that untill recently......If nobody has serviced it and you are 100% certain it was right before check to be sure you don't have a mount failing.

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

The shims I always used to align pumps and motors were cut into a U shape and could easily fall out if mounted in the verticle position.
If the bolts on the mount aren't tight then their probably gone.

Danny

__________________
1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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Is that standard MB material? U shaped spacers? Cuz you are probably right.

__________________
Current Stable:
1994 S500 v140, 210k miles, white with grey.

Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now)
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020)
1992 500E 156k mi sold
etc.