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HomeTech Articles > 993 Technical Article:

Pelican Guest Technical Article
Permission to publish this article is provided generously by
Robin Sun at
Be sure to visit his site for loads of 993 info!

How to flush the brake system

The following procedure were posted on the Rennlist 993/996 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

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. 


Comments and Suggestions:
Totach59 Comments: How much brake fluid should one have ready for this flush?
December 9, 2017
  Followup from the Pelican Staff: two pints. - Nick at Pelican Parts  
John Comments: Hi I have a motive brake bleeder I purchaced from you guys, I want to flush the brake fluid on my 1995 993 c4 which has an electric booster.I have the yellowcapgarage video but they are not clear about my c4.rennlist has a how to article that says I must depressurize the brake system by bleeding the accumulator not sure about this step.
August 29, 2015
  Followup from the Pelican Staff: Not sure, I haven't used that bleeder on your model. Might be a worth a call to our parts specialists or the bleeder manufacturer. - Nick at Pelican Parts  
chris ghiatis Comments: I Have a 1997 993 with an electric motor on the ABS block. I think the motor pressurizes the brake fluid. Will it affect me if I use a Hand power bleeder to bleed my brakes?
July 12, 2009
  Followup from the Pelican Staff: In general, no. But if you bleed the system dry and then try to refill, then you might encounter some ABS problems and have to bleed the ABS system. I recommend leaving the ABS system in place and changing the fluid using a power bleeder, combined with a colored brake fluid (like ATE SuperBlue). - Wayne at Pelican Parts  

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