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adjusted by replacing shims between the inner end of the axle and the brake disk. The more shims put in, the more the
top of the rear wheel tilts outward.
Note that there are usually some shims between the brake rotor and the differential unit. These are to locate the rotor
properly between the calipers, but also affect the camber as well. If working in this area, always make sure all shims
are reinstalled properly. If your objective is to relocate the brake rotor without affecting the camber, move shims from
inside the rotor to outside or vice versa, but do not add or subtract any shims to the car. If your objective is to alter the
camber without relocating the brake rotor, add or subtract shims from outside the rotor and do not disturb the shims
inside the rotor.
Randy Wilson offers this advice: “Camber is not a constant. The camber control is taken on two pivoted arms (of
unequal length) so that the camber can change on a predetermined curve based on suspension position.
“It is very unlikely for the camber to change from factory specs unless one of three things happens: either something is
bent, someone left some shims out during a differential or brake service, or the ride height is wrong. The #1 cause is
the last, sagged rear springs. So, when you are told that the rear camber is off, investigate the static ride height before
investing a lot of time/money in shim swapping.” Better advice: don’t make any decisions about adjusting shims
without ascertaining the alignment properly, which means to lock the suspension height using the specified tools; see
page 355.
CLUNK - REAR: See the section on page 351.
REAR SUSPENSION SUBFRAME/DIFFERENTIAL REMOVAL: To work on the differential, as well as many
tasks relating to the rear brakes, it is necessary (or merely preferable) to lower the entire rear suspension assembly out
the bottom of the car. Fortunately, this is nowhere near as difficult as it appears. It is suggested you read through the
tips on removing the inboard rear brakes starting on page 437 before starting this job.
The basic idea is to put the rear of the car on jackstands, position a floor jack under the center of the IRS, unbolt it from
the car, lower it and roll it out from under the car. The first challenge: You need to get the rear of the car high enough
to get the suspension out from underneath. To get it out the rear of the car, the lowest point of the bottom of the trunk
needs to be higher than the height of your floor jack when fully collapsed plus 13”. Plus an inch for fudge, just to make
sure.
As soon as you get the car propped up and the rear wheels off, the next thing you should consider doing is removing the
grease fittings at the bottom of the hub carriers. They’ll get busted up sooner or later if you leave them in there.
The next challenge will be getting a jack that can get high enough to hold the subframe up while you take the mounting
bolts off, and then lower it far enough to get out from under the car -- which means a stroke of 13” or more. If your
jack isn’t up to the task, Jan Wikström says “You’ll need to shift the subframe in two lifts. I use a 5” thick wooden
block on the jack and rest the unit on two cement blocks halfway up.”
“You need a friend to stabilise the subframe as you move it down and up (and help you lift it to the workbench; that
sucker is heavy). To make the job a lot easier, take the spring/shock units out first and refit them last.”
When ready to lower the IRS, Jim Isbell describes locating the jack: “Make sure it is under to the point of almost being
too far forward. The cage will try to roll forward if the jack is too far back as it is front heavy.” The balance point
appears to be perhaps three inches forward of the axles.
Some owners have reported good results with putting the wheels back on during removal; that way, the assembly can
be rolled out from under the car. It will require positioning the car on even taller stands, though. Disconnecting the
spring/shock units from the lower swingarm first helps because it allows the suspension to squat.
Note that the suspension assembly, standing on its wheels, will show a distinct tendency to roll over. If you try to keep
it from rolling over by holding onto the radius arms, you may find that the radius arms can swivel around their
attachments to the lower swingarms without warning and the assembly rolls over anyway, probably onto your toe or