997TT flushing the brakes/clutch line

[RJFabCab]

Loren et al,

I plan on changing the brake fluid in the 997TT with a Motive Power Bleeder.

Is the clutch bleed valve in the 997TT still accessible and in the same location as in the 996 series (top of the tranny)?

Are there any significant technical/procedural differences that I need to be aware for the 997 series?

I haven't actually gotten up under the car yet, but the procedure surely can't be that much different from the 996.

Cheers

[RFM]

The clutch hydraulic system on a TT is filled up with PENTOSIN hydraulic fluid, look out with that. The canister is located under the trim on the left of the battery. If a bleeding of the clutch system is not necessary, let it like it is.

[RJFabCab]

The clutch hydraulic system on a TT is filled up with PENTOSIN hydraulic fluid, look out with that. The canister is located under the trim on the left of the battery. If a bleeding of the clutch system is not necessary, let it like it is.

That's interesting info. I just got done reviewing PET diagrams and it looks like the following:

1. In the 996 non-turbo cars, including the 996 GT3, the brake lines and clutch operating cylinder are run off the same fluid, brake fluid, with a common reservoir.

2. The 996TT and 996 GT2 have separate circuits with different reservoirs. The brake lines are fed with brake fluid while the clutch hydraulic lines are fed with PENTOSIN.

3. The 997 non-turbo cars, including the 997 GT3, appear to have the same setup as the 996 non-turbo series. Brake lines and clutch lines have a single brake fluid reservoir.

4. The 997TT, same as the 996TT, has separate circuits. Brake lines are fed from the brake fluid reservoir while the clutch hydraulic lines are fed from a separate reservoir containing PENTOSIN.

Thanks, RFM. I really didn't want to stick my arm way up under there anyway! :lol:

[PAULSPEED]

I was just trying to do the brake fluid today (7-13-08).

I lost my wheel lock so I had to stop even though I

had every thing ready to go.

Royal sucks!!!

Working on a wheeel lock as soon as possible.

Paul

[bonehead]

Changing brake fluid out to Castrol SRF on my 997 turbo. From what I understand, this cannot be mixed with any other fluid, including what's in the clutch and ABS reservoirs. From what I'm reading above, the clutch is run with completely different fluid/reservoir, so this should be left alone?? Does the ABS still need to be flushed as well?

If so, is the only way to bleed the clutch (if necessary) and ABS through a PIWIS or Durametric or is there another way to ensure that fluid is purged during the flush?

[Loren]

Yes, you will need a complete flush to go synthetic from conventional brake fluid (or vica versa).

That includes ABS flush.