Date: Fri, 31 Dec 1999 18:51:33 GMT
From: scrowenopsamink.net (Steve Crowe)
Subject: Re: URGENT HELP: Need parts identification...


On Wed, 29 Dec 1999 22:21:28 GMT, Gavin Haslett <thumper_svxnopsamo.com> wrote: >Okay... giving my 1996 900 SEturbo the once-over today I noticed a few >incongruous details that I intend to talk to the dealer about. However, >I found a possible problem that I need help with. > >At the back of the engine, just above the alternator and behind the >belt, there's a circular piece of metal. This piece of metal has a >square hole raised above its surface (looks like the insert for a handle >of some description), and a humped piece with a hole in it which looks >like a raised bolt-hole. On the engine block itself is another hump with >a hole, looking like this hump and the one on the mystery piece are >supposed to be aligned with a bolt through both of them. Right now, no >bolt and they're off by about 50 degrees. > >First, can anyone tell me what this circular thing is? Secondly, what >does it do? Third, is there supposed to be a bolt where I think there's >supposed to be one? 1. The part is the serpentine belt tensioner assembly. 2. It provides the proper amount of belt tension. 3. There is NOT suppose to be bolt in the holes. You are correct in that the square hole is for a handle. This is how you compress the tensioner in order to change the belt. I use a 1/2" drive 24" long breaker bar held at 90 degrees to the joint to perform this operation. When the tensioner is fully compressed, the holes line up and I slip in a pin that I made from some stock 3/16" steel dowel rod. A bolt of the correct size or even a phillps screwdriver would work. With bolt in place, the tensioner is compressed and the belt will slip on all the pulleys. I have done so many of these, that I don't even bother with the pin anymore. I compress the tensioner and slip the belt off the P/S pulley, then release the tensioner. After I have removed the belt and install the the new one on all the pulleys except the P/S, I recompress the tensioner and slip the belt over the P/S pulley. Note: Someone at Saab also figured this out, because the holes for the pin are not on the 9-3. The 9-3 also does not use the center idler pulley anymore. >With the engine running there are very serious vibrations in this part, >vibrations that aren't there in the block so I'm assuming either it's >amplifying the vibration of the block or it's attached to something else >inside that's vibrating independently. Yep the thing shakes like hell. NORMAL. Look at another one on another car. It will be the same. >I need to know what this is ASAP so I know if this even needs fixed, and >if so how urgently. > >Any input greatly appreciated. > >If needs be, I can photograph this piece and post a link later to my >website where I can put a copy of the picture for reference. I don't >want to do this if I don't have to because I need to reboot to Windows >(uck!) in order to download pictures from my digital camera. Picture was worth a 1000 words. It is tough to diagnosis/describe problems over the phone or the net. > >Please let me know! > >-- >Gavin Haslett >thumper_svxnopsamo.com >http://www.geocities.com/thumper_svx >"Ahhhh... Mountain Dew... nectar of the geeks!" > Good luck with your car, Steve Crowe ASE CMAT/L1, Saab Master Tech Harpers Ferry, WV scrowenopsamink.net

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