Brake master Cylinder
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Brake master Cylinder
Right before I do something, looking for a bit of advice/ confirmation from the DDK knowledge bank.
For the last couple of years I've gad a long soft brake pedal. Bled the system but it still ends up coming back. So thought to myself maybe I have a leak. Removed the belly pan and no signs of a leak
So next thing is master brake cylinder seals might possibly be worn. The car is 41 after all.
So my question, do I just disconnect the cylinder as shown in the shot, replace the rubbers on the piston, re-assemble and refill & rebelled the system.
For the last couple of years I've gad a long soft brake pedal. Bled the system but it still ends up coming back. So thought to myself maybe I have a leak. Removed the belly pan and no signs of a leak
So next thing is master brake cylinder seals might possibly be worn. The car is 41 after all.
So my question, do I just disconnect the cylinder as shown in the shot, replace the rubbers on the piston, re-assemble and refill & rebelled the system.
72 2.4s
96 993 RS
Series 1 DDK membership card
96 993 RS
Series 1 DDK membership card
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- Nurse, I think I need some assistance
- Posts: 16857
- Joined: Wed Nov 12, 2003 10:48 pm
- Location: Worcs/W Mids border
Re: Brake master Cylinder
If you suspect the master cylinder I'd buy a new one rather than rebuilding your existing one.
Andy
“Adding power makes you faster on the straights;
- subtracting weight makes you faster everywhere”
“Adding power makes you faster on the straights;
- subtracting weight makes you faster everywhere”
Re: Brake master Cylinder
I got mine from this lot. £69 less 35% at the moment. Genuine ATE.
http://www.mister-auto.co.uk/en/master- ... _g258.html
Mick
http://www.mister-auto.co.uk/en/master- ... _g258.html
Mick
'Creativity is the product of time wasted' Albert Einstein
1972 RHD 2.4E (ex Bob Watson racer - now in original Tangerine)
1966 LHD swb (Doctors car - now with Mrs. Ferrari in Madrid)
1966 TR4A (now sold and replaced by 1990 944 turbo)
1966 S2a Landrover
1972 RHD 2.4E (ex Bob Watson racer - now in original Tangerine)
1966 LHD swb (Doctors car - now with Mrs. Ferrari in Madrid)
1966 TR4A (now sold and replaced by 1990 944 turbo)
1966 S2a Landrover
Brake master Cylinder
So is that just a drop off and on
72 2.4s
96 993 RS
Series 1 DDK membership card
96 993 RS
Series 1 DDK membership card
Brake master Cylinder
I'm not 100% sure it is, just a process of elimination, no visible leaks anywhere but the pedal keeps going soft, so I thought it must be the cylinder.Lightweight_911 wrote:If you suspect the master cylinder I'd buy a new one rather than rebuilding your existing one.
If anybody has any other thoughts I am open to them
72 2.4s
96 993 RS
Series 1 DDK membership card
96 993 RS
Series 1 DDK membership card
-
- Nurse, I think I need some assistance
- Posts: 16857
- Joined: Wed Nov 12, 2003 10:48 pm
- Location: Worcs/W Mids border
Re: Brake master Cylinder
When was the last time the brake fluid was changed ?
Andy
“Adding power makes you faster on the straights;
- subtracting weight makes you faster everywhere”
“Adding power makes you faster on the straights;
- subtracting weight makes you faster everywhere”
Brake master Cylinder
Winter 2010Lightweight_911 wrote:When was the last time the brake fluid was changed ?
72 2.4s
96 993 RS
Series 1 DDK membership card
96 993 RS
Series 1 DDK membership card
Re: Brake master Cylinder
My experience when I used the car as a daily driver was that the MC lasted about 8 years, and most often leaked into the pedal cluster. I always changed the fluid twice a year, certainly before track season and winter. I learned the best way to get a full flush was to drain the calipers since a simple bleed would not change the fluid in the outer halves unless the caliper had a cross-over tube and an outer half bleed nipple. The bore of the MC is often corroded by water in old fluid (one year old) so new seals would not likely work by themselves. Rebuild kits are rare enough let alone new seals.
Porsche historian & researcher, contact me for Kardex through 1969 model year.
Addicted since 1975
Addicted since 1975