Obaid,

My daughter drives our 1982 240D in Troy, NY which is kind of like the originating site for the street virus that causes potholes. She brought the car home last weekend to have our local front end guru align it as, even though she tries not to, she has hit a few good potholes and the car started pulling and making noises driving over bumps.

Long story short (shorter?), the front end man put the car up on a lift, stuck a crow bar in a choice location and gave a jerk. The wheel moved. He repeated the process in a few other locations on both sides, put the car down and told us he would not work on the front end until either he replaced the driver's side upper control arm and bushing, or they were replaced by another, as the front end would not stay aligned.

So, seeing as it is fierce weather out here and I have no garage, I had him do the job. Picked the car up today and the steering is fine. Still have some groans and crunches over bumps, but the steering is tight and straight.

The point is, if you have unreliable results getting the front end aligned there may be some worn parts affecting the stability of any adjustments made.

Per the printout on my daughter's car, the W123 specs are:

Camber: -0.3 to +0.2 degrees
Caster: 7.8 to 8.8 degrees
Toe (each side): 0.13 to 0.29 degrees
Toe (total): 0.25 to 0.58 degrees

Good luck and I hope this helps. Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)