[Main 9000 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Re: Thanks - How exactly does a rollback reset the tensioner? Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Ari [Email] (#2847) [Profile/Gallery] (more from Ari) on Thu, 6 Sep 2001 11:02:38 In Reply to: Thanks - How exactly does a rollback reset the tensioner?, ED, Thu, 6 Sep 2001 10:22:43 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

The tensioner is a spring loaded plunger with a rachet. The spring holds the plunger against the chain, tensioning it. There is also a rachet mechansim to keep the plunger from getting pushed back in. As the chain wears the plunger moves out in discrete steps. So the chain doesn't always have the same tension - The plunger moves out, and tensions the chain a lot. As the chain wears, it will slacken slightly, until the plunger moves out another step. The tension on the chain should always be 'enough', but it will vary over a small range. At the loose end of the range you may get a little more noise than at the tight end.
If you turn the engine backwards a turn, it puts a little slack into the chain for just a little bit. That causes the plunger to extend just a little farther to the next rachet step.
Right now, the chain might be just a little slack because the plunger hasn't had enough slack to make the plunger hit the next step. By turning the engine backwards, you give it just that little push. You could also wait, and after a time the plunger would extend by itself. But this won't hurt anything, and if it does quiet things down, it'll give you some peace of mind. (and peace of engine).

posted by 140.157....

• Timing Chain Coffee can Rattle when cold 93CSE, Ed, Wed, 5 Sep 2001 17:38:29
  • Re: Timing Chain Coffee can Rattle when cold 93CSE, Ari , Thu, 6 Sep 2001 08:56:46
    • Thanks - How exactly does a rollback reset the tensioner?, ED, Thu, 6 Sep 2001 10:22:43
      • Re: Thanks - How exactly does a rollback reset the tensioner?, Ari , Thu, 6 Sep 2001 11:02:38 <-- Viewing This Message
  • Re: with only 77 k miles doubt you need a chain but the, aero guy, Wed, 5 Sep 2001 18:19:44

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