How to flush the brake system

The following procedure were posted on the Rennlist discussion board in March, 2001

My method - generic
 Posted By: Ray Calvo <>
    Date: Monday, 5 March 2001, at 12:34 p.m. 

 In Response To: How to flush the brake system on 993? (Chris) Contributed by Ray Calvo

Note added: 4/25/05

As suggested by John Wohlever for 95 or earlier 993s there is a drain off tube by next to the brake fluid resorvior, it will need to be clamped prior to the bleeding process or else the pressurized brake fluid will drain off from there.

1) Pull as much old fluid out ofreservoir as possible with a turkey baster, refill with fresh fluid. 

2) Fill Power Bleeder with new fluid 

3) Hook Power Bleeder to master cylinder 

4) Start at right rear; remove wheel 

5) I built up a drain bottle which had a "tee" in it, with a separate 1/4" or so clear plastic tubing attached to each part of the upper "tee". Each tubing end gets attached to a bleed screw. 

6) Open both bleed screws, drain out a 1/4 pint or so (fluid looks clear with no bubbles). 

7) Close bleed screws, remove tubing, reattach wheel. 

8) Go to LR, RF, LF in that succession and repeat (4)-(7). 

During (6), helps to tap brake caliper with a rubber or wood mallet.