Date: Tue, 17 Aug 1999 13:03:55 -0400 From: "Eric Law" <elawxnospamxnopsamecsxnospamx.com> Subject: Re: Inner cv joint keeps breaking.
Alan, I had an '81 with a similar problem, and never really did figure it out. However, here are a few things to try: First, open up the opposite inner CV, and observe its position. If it seems really far in, this would point to a motor/transmission positioning problem. In this case, I'd look over the motor mounts really carefully, they can be bent a bit and it's not real obvious. Another possibility here would be that the car had been crashed and the "frame" is somewhat bent. If the opposite CV is positioned correctly, then the problem must exist only on the affected side. One possibility here is improperly positioned or bent control arms. Also, it's remotely possible that one of the circlips holding the wheel bearing has popped out, and the bearing has slid toward the outside of the car. See if the outer CV joint housing seems closer to the steering knuckle than the one on the other side of the car. I also seem to remember that at some point Saab introduced slightly longer driveshafts to help this type of problem. Might be worth a call to a dealer to check it out. Hope this helps! Eric Law Alan Buckingham <alanbnopsamb.swinternet.co.uk> wrote in message news:7pc23b$pub$1nopsam8.svr.pol.co.uk... > Saab 900 turbo 1989: > > I have a problem with the inner universal joint (also known as inner cv > joint) and the coupling that it goes into. Twice now the inner joint has > come out of the coupling. This has happened when I make a sharp right turn > under power. The last time the joint came out of the coupling a lot of > damage was done. > > Yesterday I took the driveshaft complete with the inner joint off of the car > as well as the coupling which goes into the transmission. Both the joint > and the coupling were wrecked. On inspection it became clear why this had > happened. From the wear marks it could be seen that the inner joint was > only gripping on the outer most part of the coupling and under power the > inner joint must have been popping out. > > Today I fitted a secondhand driveshaft, inner joint and coupling only to > find that, just as before, the inner joint is not going very far into the > coupling. I compared the fit with the inner joint/coupling fit on the other > side of the car and found that the inner joint seats well into the coupling > on the other side. > > There are a few possibilities which might explain why the inner joint is not > going all the way into the coupling. > > 1. One reason could be that the engine has been mounted incorrectly, to one > side so that the coupling is effectively shifted away from the inner joint. > However, I have checked the engine mounts and the engine appears to be in > the correct place. > 2. Wrong driveshaft/driveshaft is too short. This can't be the reason > because I've now had two driveshafts on that side of the car. > 3. Wishbones are bent thereby pulling the swivel member too far away from > the engine/transmission. However, as far as I can tell there is nothing > amiss here. > > Please, does anyone have any suggestions? So far the trouble I have had > with the inner joint has cost me over £500. I'm getting desperate! > > Alan. > > >
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