Paul,
1/2" is not far off but mine is assembled and I cannot get a clear view. I
have Joe A.'s Delrin Silentblocs in place, etc. so I can't really see it.
This is what I recommend. It sounds as though you are going to take that
drop arm off anyway to reposition so at that time, find the straight ahead by
finding the center of the worm.
If you are not going to remove the drop arm anyway, do this. Eliminate any
confusion you have with the wheels by disconnecting the tie rod ends so the
wheels just flop loose. Gently turn the steering wheel (steering shaft if you
do not have the steering wheel on) all the way to one side until it stops.
Don't jam the peg against the end of the worm. Now make a mark on the shaft
and on the tube. Turn the shaft all the way the other way until it stops,
counting the number of times that the shaft mark passes the tube mark. You
will have a fraction of a turn so estimate what that fraction is. Now divide
that in half and returning to the side you started with turn the shaft that
1/2
amount, and make another mark on the tube where the shaft mark stops. Now
turn the shaft all the way to the other side and do the same thing again by
turning it back toward the center the same number of turns which is 1/2 of the
total turns. If the two marks on the tube are not in the exact same place,
split the difference and that is straight ahead. Mark this on the tube
corresponding to the mark on the shaft and make it prominent so you can refer
to it.
Note where the drop arm is. Is the axis of the drop arm 3 degrees closer
to the tube from parallel? If not you have to reposition the drop arm. If
you have questions as to whether or not this is truly straight ahead, take the
cover off the steering box and note where the rocker arm is. It should be
mid point on the worm.
Before reassembling the tie rod ends make sure that the tie rods are the
same length from hole center to hole center. If not, make them that way. I
believe that you can get the tie rod length measurements from Bentley. If you
make the tie rods the same length that is a good starting reference point for
getting the car aligned properly.
If you use the marks you have made for reference when you put on the
steering wheel you will be able to get the spokes positioned reasonably well.
You may get some other suggestions as well as to how to do this, but this is
what I reasoned out and it worked well for me.
David Lylis
69 TR6 CC26160L
60 TR3A TS74461LO
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