1999-2009 [Subscribe to Daily Digest] |
 | [Main 95 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: Help for DIY replace timing belt Posted by SWEDECAR [Email]  (#112)  [Profile/Gallery]
(more from SWEDECAR) on Sat, 2 Jul 2005 08:57:08
In Reply to: Help for DIY replace timing belt, Frank  [Profile/Gallery]
, Sat, 2 Jul 2005 07:44:02
Members do not see ads below this line. - Help Keep This Site Online - Signup
|
Welcome to the wonderful world of one tensioner and TWO excentric swivel pulleys.
I assume you don't talk about the white marks on the timing belt. Those marks will only match up ones when the belt is installed and never again when the engine is rotated.
The first belts I did I could never really figure out why the timing marks didn't line up after rotating the engine a full turn but it has to do with the two idler pulleys in conjunction with when you apply the tensioner and how the belt is installed.
Now after doing many belts it is never a problem.
I have all the three pulleys loosely mounted and start by fixing the belt over the crankshaft pulley using the white double mark on belt. I also have a wedge that clamps the belt to crank sprocket so that it is no chance that the belt will jump the crank while wrestling with it over the cam sprockets.
I then run the belt up the front and over the no 4 sprocket and then 3 and under the middle pulley and over 2 and lastly 1, making sure all 4 white marks on belt line up with respective sprocket mark. During this ordeal you might need to use a socket and ratchet and tug lightly on cam sprockets to tighten the belt up and give it as much slack as possible for the last fight to bring it over the tensioner pulley.
When belt is in place, I move the lower idler into approx position mention in my diagram, move the middle pulley into it's approx position and set the tensioner pulley to it's approx position.
Then I rotate the engine and check with my cam shaft guide tool if front and rear bank is equal to each other and if they are lined up with crankshaft mark.
If not, I need to use the lower or middle pulley to tweak the camshaft timing.
The lower idler pulley, tweak the 4 cam shafts to crank and the middle pulley tweak the 1-2 shafts to 3-4 shaft.
When that is done I double check the tensioner pulley again and maybe set it more or less loose.
Then I rotate the engine a couple of revelutions again and double check the settings.
If everything looks good, I start the engine and observe the tensioner marks while running. If need be I shut off the engine and adjust tensioner accordingly and start it again.
If your crank is only one tooth off each revelution you haven't done any damage,(yet?).
Anders
, Sat, 2 Jul 2005 07:44:02, Sat, 2 Jul 2005 09:01:34, Sat, 2 Jul 2005 08:57:08 <-- Viewing This Message, Sat, 2 Jul 2005 09:08:17, Sat, 2 Jul 2005 08:40:33, Sat, 2 Jul 2005 08:08:04, Sat, 2 Jul 2005 10:01:06
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
