After finishing up the IRS rebuild, I took my '71 XJ6 to my
favorite front end/frame shop for rear alignment. It was Jaguar day
there as there was a 2007 XJ(8?) sedan in there for front and rear
alignment. The owner had owned a '72 S1 previously and we
discussed ‘‘electrical problems’’.
I had a ride and we went to breakfast and received a call while
eating. ‘‘Come pick up the car as we decline to work on it’’.
After talking to the Asst Mgr, he reported the camber as 0 on the
left and 3 on the right and the toe out at 5/8’’. I had given him
the pages out of the Jaguar manual as reference for the S1 Specs.
Since there is no toe out/in adjustment, just the setting
of ‘‘parallel �1/32 inch’’, he was at a loss. He said they had
not ‘‘been into a older Jaguar rear end in 20 years’’ and did not
have any new parts.
Since the 5/8’’ of toe out is the total difference in the front of
both rear tires versus the rear of both tires when sitting , what
could be wrong? The front of the tires are doing a ‘‘snow plow’’ as
in skiing, while going down the road. Also bad for economy.
I had given him the need to have the car at the ‘‘mid laden’’
position of the suspension - or halfway loaded. He did not have the
Jaguar ‘‘setting links - part JD 21’’ to use and just used jacks.
Knowing all this now, the camber can be adjusted by moving the
shims from side to side. One or two shims need to be added to the
left side, but the right has (4-5) shims now. I do not think taking
them all out will be enough to return it to the 3/4 negative +/-
1/4 degree spec? Each shim alters the camber by approx 1/4 degree.
The tires were wearing on the inside before the IRS rebuild and
with that much toe out it is understandable. After owning the car
for 3-4 years, I found out it was in a rear end accident at one
time in the past. I had trouble getting the boot latch to work
properly and discovered the very good prior repairs underneath.
Can the swing arms be ‘‘bent/straightened’’ on the car or are there
other solutions to toe out? Can they be removed and then all the
washers/seals be put back in while the cage is still attached to
the car? I do not ‘‘desire’’ to do this all R&R again but the problem
needs a solution.
When I took the IRS gear section out, one of the front (short)
trunion block bolts was broken and was still in place with the
safety wire. It was replaced and the trunion blocks are flat and
show no sign of any wear. There are two shims behind only the
position of that bolt (in the front only) on the drivers side.
Those shims can cause some of the toe out, but the most they would
be would be .007-.010 thick each. I only put them back where they
were before the tear down. I do not have any refences as to the
amount of shims to use to cause or correct toe out.
I plan to remove those two shims as the manual shows shims that
behind both bolts per side and then get the car re-measured at
another willing front end/frame shop.
Looking for ideas of things to check???–
'71 XJ6 383/200R, '72 XJ6 LT1/700R,'74 XJ6 383/700R
Glendora, CA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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