The sheet for the 123 says 8 degrees caster measured by adding the camber of the wheel turned 20 degrees both ways.
When set it to 8, I back up turning the wheels all the way one direction, stop, then start forward, and the wheel doesn't want to turn the other way.
I don't recall having this happen before. Yes, I checked the caster it had at 4 degrees, and backing off the caster will eliminate the problem. I'm just wondering why there is this problem. Is 8 degrees wrong, or am I doing something wrong here?

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1982 300CD Petrol/Black Leather

I'd look carefully for any parts hitting others and if I found nothing I'd back the caster off a degree and see if that frees it up.

four degrees of caster is not much.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

4 degrees felt unstable. It's no fun driving the car when you can't relax.

I have 20 degree lines on a piece of paper that I am aligning with my parallel fishing lines.
When I align one side's wheel to a line (using a straight edge across the tires), the other side is a degree or three off. Should I set the wheels to the median between the two, or go with one side and set it according to that, or do each side according to its own exact 20 degree line? I'm thinking the last option might give two vague aligned positions while diving so I think I'll try the driver's side.

Actually, I guess turning each wheel to the local line would give the most accurate measurement. Nevermind...

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1982 300CD Petrol/Black Leather

There is a plug at the bottom of the Steering Box. When removed (fluid will drip out) with the front wheels close to center you should see a hole. There is a pointed bolt that screws in and keeps the steering box center and your wheels so they cannot be turned to one side or the other.

When I did mine I removed the end play from the front wheel bearings and I referenced the toe in of the front wheels to the centerline of the Car.

If you do that both wheels will be toed in the same amount.

In the attached pic you see the short steering box plug (without the copper crush washer) and at the top the pointed bolt I made to lock the steering box (without the O-ring I had to slide over it to keep fluid from dripping out).

In the other picture is what the real tool looks like.

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84 300D, 82 Volvo 244Gl Diesel

Disconnect both outer tie rods and try to steer each wheel individually. I'm betting a ball joint is seizing up.

Please note that on the underside of the chassis are reference holes down the centerline of the vehicle and in other places that the FSM has along with special tools being used for various measurements. It is not in the 2 CD set FSM or the websites that are based on the 2CD FSM. I don't know about startek.

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84 300D, 82 Volvo 244Gl Diesel

Where's the nearest hole, and how did you draw your measurement from it? What's the size/thread of the screw?

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1982 300CD Petrol/Black Leather

The holes are just punched through and not threaded.

The way I did it requires you use the center hole in the front cross member and another back to the rear.
See the attached pic. I carefully bent some stiff wire as shown at the top of the pic to insert into the holes so it would center in the holes when the Plumb Bob was hung from it.

I hung the Plumb Bob so it nearly touched the concrete drive way and I marked that point and did the same to the rear center hole. Then I took a straight edge and drew a line through the 2 marked points and out to the front of the vehicle (again drawing on the drive way).

Then you need to decide what point on the tire you plan to take the toe in measurement from and use something.
One way is you can pick the inner front part of the most forward part of the tire and pin the Plumb Bob String against the tire and let the Plumb Bob dangle near the drive way and mark that and do the same to the other side.

Now you have a center line and to marks one for each tire. You measure across from each tire to see if they are equally spaced from the center line. If not when you do the toe in adjustment make it so each tire is an equal distance form the center line but has the proper to in.

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84 300D, 82 Volvo 244Gl Diesel