how do i bleed carrera tensioners

[osidak]

I am installing my carrera tensioners into my 78 911. I have seen in various places that I should bleed them first. What I haven't seen is how to bleed them. Thanks

osidak
78 911sc

[BK911]

I don't think they need to be bled. They have no internal seals so the oil escapes around the piston. Any air would leak out there as well. At least this is my understanding. Hopefully I am right, because I didn't bleed mine!

Have fun!
BK

[bscotti]

Yep, you're correct, no bleeding necessary.

[ChrisBennet]

I use leeches.
I never bleed mine. When you "pull the pin" on the tensioner, don't let it snap open. Push down on the piston and release it slowly. I had one fail after changing cams and was told that letting them snap open may have damaged it causing the failure. -Chris

[osidak]

Doh, looks like I need to keep an eye for mine then as I let them snap a few times when I was doing my cam timing.

So no bleeding required.... Ok I know I had to bleed my tensioner on my MB 240D when I replaced the chain but hey anything to make my life easier.

Osidak

Thanks again

[BK911]

I wouldn't use them to do your cam timing! I'd use the old ones. I keep a set around just for cam timing. I'd never use the same set for timing and for my car. I forget why and who told me that, but I prefer to be on the safe side.

[ChrisBennet]

Originally posted by BK911
I wouldn't use them to do your cam timing! I'd use the old ones. I keep a set around just for cam timing. I'd never use the same set for timing and for my car. I forget why and who told me that, but I prefer to be on the safe side.

Use the special tool or old mechanical tensioners when setting the cam timing. The hydraulic ones don't tension the chain tight enough to get consistent readings.
-Chris