Tensioner gasket leak - replace ?

ecm911 · 09-13-2006, 05:29 PM

Hi,

My left top tensioner is leaking.

Is it safe to change this without disturbing the cam timing.
never done this on a 3.6, most experience with 3.0.

Is it simply take the cover and tensioner out, clean up tensioner and replace? I understand the tensioner is under some pressure so careful when removing.

But no need to hold chain have a tdc, etc etc ?

Thanks
Earl

Bill Verburg · Bill Verburg's Garage

Yes, no need to fool w/ cams. The cover gaskets and bridge gaskets are likely leak suspects

ecm911 · 09-14-2006, 05:03 AM

Thanks very much Bill,

That's great! I just replaced the bridge o-rings. The right side is DRY! YEAH!!

It looks like the left side will be too after I change the tensioner cover gasket!!!

This should be very easy I hope!

Earl

dick911 · 09-14-2006, 11:46 AM

Hello ecm911 and Bill V.,

What do you mean by the "bridge o-rings" ?

I know where to find the tensioners and the sealings, but what and where is the "bridge" ?

Thanks,

Dick911

(964 Tiptronic)

Bill Verburg · Bill Verburg's Garage

Bridges l/r are #'s 21, the 6x2.5 bridge o-rings that often leak are #'s 22

dick911 · 01:32 PM

Hello Bill,

thank you for the information ! Clear picture.

Two last questions:
- what are these bridges for ?
I looked at my engine today but I'm not sure what they are for, and yes, they are a bit 'wet'.

- is it possible to change the rubber seals (# 16 and # 20) of the chain housings and the rubber o-rings ( # 18) of the chainhouse-bolts without removing the engine ?

thanks,

dick911

Bill Verburg · Bill Verburg's Garage

Quote:

what are these bridges for ?

oil comes off the pulley end of the crank, on each side, a branch goes to the pressure fed tensioners, another to the bridge which transfers the oil to the cam galleries

Quote:

is it possible to change the rubber seals (# 16 and # 20) of the chain housings and the rubber o-rings ( # 18) of the chainhouse-bolts without removing the engine ?

Yes, You will probably need to drop the exhaust and heat

dick911 · 09-17-2006, 07:48 AM

OK, great !

Thanks again Bill !

Dick911

bill3667 · 09-19-2006, 09:15 AM

Quote:

Originally posted by dick911
Hello Bill,

I looked at my engine today but I'm not sure what they are for, and yes, they are a bit 'wet'.

- is it possible to change the rubber seals (# 16 and # 20) of the chain housings and the rubber o-rings ( # 18) of the chainhouse-bolts without removing the engine ?

thanks,

dick911

Thanks for asking this question, I had already orderd these parts and had planed on doing this task soon.
It looks like I have a few things to do w/ the exhaust off ...

I do suspect the O-rings are part # 17 and not 18 though.

dick911 · 09-19-2006, 11:19 AM

Never afraid to ask about anything...

So these rubbers also tend to leak on 993 's ??

gr.

Dick911

ecm911 · 09-28-2006, 01:04 PM

Update,

Changed the left tensioner gasket - but sadly I have a leak/weep from behind the timing cover. The only leak I have - o well.

So it looks like I will be resealing my chain covers. I will do both sides , even though the right is currently dry. Its time for maint anyway - plugs valve adjustment.

Just to confirm this can be done with the engine in the car?

TIA,
earl

PS I may have some questions as I go along. Have done a search there is a fair amount on the fourm on the cam timing.

dick911 · 09-29-2006, 09:22 AM

Hello ECM911,

Is it possible that you take any pictures while doing the timing covers ?

Would be very helpfull for me (and others I think

)

Good luck,

dick911

ecm911 · 10-10-2006, 11:46 AM

I will be attempting this soon, maybe even this weekend - if all tools and parts are ready.

I will do my best to take some picks, but there are a few very good posts in this forum already. And I tend to take pictures as I begin and then forget once I an in the middle of the project ...

Hopefully I won't have to post for help!!!

Thanks !

Earl

dick911 · 12-01-2006, 08:40 AM

Update from this side of the ocean:

I removed the chain covers and replace the rubber gaskets and all the rubber rings. Great, no oil leaks !!
I've done this with the engine in the car but it was not as easy as I thought...

First I removed al the engine surrounding platework (that's easy...) then I removed the rear engine mounting (supported the engine with a jack). After removing the engine mounting I was sure I was there... but the airco mounting was clearly in the way to remove the right chain cover. I also had te remove the pulleys, etc. to remove this airco mounting... Hell of a job...

The replcaing of the gaskets is a really easy job.
But...while I was there I didn't dare to remove the chain tensioners gaskets... I did some research on this forum and all the well known others: I want to know for sure that it is possible to remove the tensioners without any problems with the timing chains...

So I skipped this job and put everything back together; tensioners gasket can also be done later on...

So my question is: Can someone give me any garantuee or a good tric to remove the tensioners so I can replace the chain tensioners gasket ??

Thanks,

Dick

Bill Verburg · Bill Verburg's Garage

#12 above?
If so put the engine at TDC(overlap TDC for #4)both cam pips up.

unbolt 2x 6mm nuts r&r, don't mix them up, left and right are different

I had the exhaust off to do this.

dick911 · 12-02-2006, 06:08 AM

OK Bill, thanks !