Does anyone know the tightening torque?

Post by **confused_al** » 25 Dec 2008, 13:48

I'm in the process of replacing my serpentine belt tensioner and idler pulley on my 95 n/a. It must be another year older, I just can't find tighten torque for these mounting bolts (for tensioner and idler). Appreciated greatly if someone can help me on this!

Merry X'mas everyone!

Post by **MadeInJapan** » 25 Dec 2008, 14:41

VADIS lists the following:
Tensioner Pulley: 30Nm (22 ft lbs)
Idler Pulley: 24Nm (17.75 ft lbs) (if re-using, make sure and grease the bushing in this pulley).
Auxiliary Belt Tensioner 20Nm (14.75 ft lbs) for both screws...also the same value if you remove the center screw of the tensioner to regrease the internals.

I always thought the VADIS values were a bit low and would nudge the bolts just slightly more than the listed values.

Good luck and let us know how it goes.

Post by **confused_al** » 25 Dec 2008, 15:23

Thanks Dave!

I start to think my VADIS is a bad version which gives wrong info on this section. It doesn't even have an idler on its "Auxilaries / belt tesioner replacing" part, and the tesioner looks so different from the one we have.

Post by **MadeInJapan** » 25 Dec 2008, 15:32

Well, it also list the mechanical tensioner- something yours and my car don't have...but basically, everything else seems fine. the free download of the 850 service manual in the pinned section has basically the same information (sans the mechanical tensioner info) as well.

Post by **confused_al** » 25 Dec 2008, 16:42

BTW, I found a "new tool" to turn the serpentine belt tensioner. Its a lock bar for Craftsman tool chest, which is a 1 1/32" wide steel strip bent 90 degrees on the end (about 1/2" long). Insert that end into the diagonal line of the square hole, that makes the tensioner open soooo easy!

Post by **MadeInJapan** » 25 Dec 2008, 19:52

That's great! The last one I helped with ('93 850) used the 3/8 inch nub of a ratchet and that was it....very easy! I was surprised at how easy it was...only thing was there was no hole in that particular tensioner to slip something in to hold it up, but it was easy enough holding the tensioner with the ratchet and one hand while pulling the belt off with the other...a yard stick with a nail bent at 90 degrees helped with the lower part of the belt.

Post by **Zimbo** » 26 Dec 2008, 16:48

confused_al wrote:BTW, I found a "new tool" to turn the serpentine belt tensioner. Its a lock bar for Craftsman tool chest, which is a 1 1/32" wide steel strip bent 90 degrees on the end (about 1/2" long). Insert that end into the diagonal line of the square hole, that makes the tensioner open soooo easy!

Any chance you can post a picture of that? I'm getting ready to tackle mine for the first time tomorrow or the next day.

Thanks!

Post by **confused_al** » 26 Dec 2008, 17:22

Here you go, hope helps.

Post by **confused_al** » 26 Dec 2008, 17:57

Post by **Zimbo** » 27 Dec 2008, 14:29

Thank you!
Unfortunately I ran into a snag and will have to postpone my timing belt change.
Seems somewhere along the line the cam guide got broken off on my cover: