brake reservoir tubing

Mark P Hatten · Post by **Mark P Hatten** » Tue Dec 31, 2013 9:12 am

This happened to me as well. I lent the Coupe out @ the GPNW show last summer, my driver said brake pedal hit the floor. I've never been able to find the leak, but I bet it's the booster.
https://www.youtube.com/watch?v=W_nbOQIlAg0
Mark
www.mphspecialties.com
To: anzhonda600owners@yahoogroups.com From: mgpstearns@...
Date: Tue, 31 Dec 2013 08:23:39 -0800 Subject: [anzhonda600owners] Re: brake reservoir tubing
I had the same problem, I couldnt figure out where my brake fluid was going. I finally figured out I had the same problem as Bob with it staying in my brake booster after I started having fluid fill the breather hose from the top of the cylinder head (thank goodness for the inline check valve otherwise my engine would have been filled with Dot3) so I romoved the breather hose and capped the inlet/outlet. Then came the final final blow, we were at a local car show and cruise night and after going up and down the strip I found I had no brakes. I found brake fluid had overflowed from the Breather vent on top of my brake booster and had completely drained my reservoir. I limped home and removed the brake booster and just bent the tube to the master, refilled the system and bled it and I haven't lost a drop of fluid since. My brakes work better now that its a closed system again and the brake booster is sitting on the floor of my garage awaiting its fait whether to be rebuilt or sold. So be careful about your fluid disapearing into your booster it may eventually come to a messy end.

Marty Garrett · Post by **Marty Garrett** » Tue Dec 31, 2013 9:23 am

Here's an explanation of the braking problem i had. Sounds similar to what you're explaining robert:
http://n600sedan.blogspot.com/2013/06/b ... build.html
marty
san francisco, ca

On Dec 31, 2013, at 9:05 AM, Robert James wrote:
> i will check again more closely, but do not think it is leaking at that point.
> On Dec 31, 2013 6:02 AM, "Eric Geiger" egeiger@...
> > wrote:
> > Make sure it's not leaking back into the car where the master enters the firewall. It could easily be leaking there where the seal in inside it and u might not know because your carpet soaks it up.
> > ------------------------------------------Eric Geiger
> > PRG-Nocturne
> > XXX-XXX-XXXX
> > Egeiger@...
> > On Dec 31, 2013, at 8:56 AM, "
> > richmccolman@...
> > " > richmccolman@...
> > > wrote:
> > > Interestingly, the fluid in my Coupe's master cylinder reservoir also has gone down a bit in the few weeks since I flushed and bled the brake system. The pedal is firm and doesn't sink when I hold it down, so I don't suspect a leak in the calipers, wheel > > > cylinders, etc.
> > > So if there is an issue with the brake booster, what happens to the fluid from the master cylinder? Does it eventually get sucked into the vacuum line and intake manifold?
> > > Richard McColman

Robert James · Post by **Robert James** » Tue Dec 31, 2013 2:51 pm

i checked inside the car by brake pedal and this area is dry.� running my hand under the MC in the engine bay, i find it wet with fluid....� hmmm, maybe a very slow leak from either the bleeders or warning switches or both.� i can find no leak around hoses from reservoir.� so, to eliminate this, should i give these connections a tightening or remove and reinstall?� If a reinstall is suggested, should i use telflon tape or ...?

On Dec 31, 2013 9:23 AM, "Marty Garrett" wrote:
> �
> Here's an explanation of the braking problem i had. �Sounds similar to what you're explaining robert:
> http://n600sedan.blogspot.com/2013/06/b ... build.html
> marty
> san francisco, ca
> On Dec 31, 2013, at 9:05 AM, Robert James rjamesblues@...
> > wrote:
> > �
> > i will check again more closely, but do not think it is leaking at that point.�
> > On Dec 31, 2013 6:02 AM, "Eric Geiger" > egeiger@...
> > > wrote:
> > > �
> > > Make sure it's not leaking back into the car where the master enters the firewall. �It could easily be leaking there where the seal in inside it and u might not know because your carpet soaks it up. ��
> > > ------------------------------------------Eric Geiger
> > > PRG-Nocturne
> > > XXX-XXX-XXXX
> > > Egeiger@...
> > > On Dec 31, 2013, at 8:56 AM, "
> > > richmccolman@...
> > > " > > richmccolman@...
> > > > wrote:
> > > > �
> > > > Interestingly, the fluid in my Coupe's master cylinder reservoir also has gone down a bit in the few weeks since I flushed and bled the brake system. The pedal is firm and doesn't sink when I hold it down, so I don't suspect a leak in the calipers, wheel > > > > cylinders, etc.
> > > > So if there is an issue with the brake booster, what happens to the fluid from the master cylinder? Does it eventually get sucked into the vacuum line and intake manifold?
> > > > Richard McColman�

Bill · Post by **Bill** » Tue Dec 31, 2013 3:25 pm

No, not Teflon tape, won't help. Use carb or brake cleaner to clean off the master cylinder and all connected parts (don't get any in the reservoir) then step on the brakes a few times and go out with a flash light and look for the leak. If the power booster on your sedan is not working, the brake line hose for the rear brakes will attach to the two lines to the booster. Taking it out of the picture. If the Booster is on the coupe you will have to be a bit more creative. But the best is to pull it apart and see what is wrong. If there is some crud floating around - clean everything in DOT 3 and put it back together, a good idea is to replace the O rings on the plate that is holding the vacuum diaphragm. If the diaphragm is loose from the plate clean it up and reattach using some silicone to seal it. I used a wire tie around one once and it held. If the diaphragm is cracked and leaking, the long piston assembly is showing copper instead of chrome then there is not much you can do without getting it completely rebuilt.
Bill

Robert James · Post by **Robert James** » Tue Dec 31, 2013 3:48 pm

thanks bill, will do with cleaner.� do not think booster is the issue, but would it fill up with fluid? it sure is not leaking any...(i do have a coupe)
bob

On Dec 31, 2013 3:25 PM, "Bill" wrote:
> �
> No, not Teflon tape,
> won't help.� Use carb or brake cleaner to clean off the master cylinder and > all connected parts (don't get any in the reservoir) then step on the brakes a > few times and go out with a flash light and look for the leak.� If the > power booster on your sedan is not working, the brake line hose for the rear > brakes will attach to the two lines to the booster.� Taking it out of the > picture.� If the Booster is on the coupe you will have to be a bit more > creative.� But the best is to pull it apart and see what is wrong.� If > there is some crud floating around - clean everything in DOT 3 and put it back > together,��a good idea is to�replace the O rings on the plate > that is holding the vacuum diaphragm.� If the diaphragm is loose from the > plate clean it up and reattach using some silicone to seal it.� I used a > wire tie around one once and it held. � If the diaphragm is cracked and > leaking, the long piston assembly is showing copper instead of chrome then there > is not much you can do�without getting it completely > rebuilt.��
> �
> Bill
> �
> �
> �
> �
> From:
> anzhonda600owners@yahoogroups.com
> [mailto:
> anzhonda600owners@yahoogroups.com
> ]
> On Behalf Of
> Robert
> James
> Sent:
> Tuesday, December 31, 2013 2:52 PM
> To:
> anzhonda600owners@yahoogroups.com
> Subject:
> Re: [anzhonda600owners] RE:
> brake reservoir tubing
> �
> i checked inside the car by brake pedal and this area is dry.� > running my hand under the MC in the engine bay, i find it wet with > fluid....� hmmm, maybe a very slow leak from either the bleeders or warning > switches or both.� i can find no leak around hoses from reservoir.� > so, to eliminate this, should i give these connections a tightening or remove > and reinstall?� If a reinstall is suggested, should i use telflon tape or > ...?
> On Dec 31, 2013 9:23 AM, "Marty Garrett" juniselect@...
> > wrote:
> > �
> > Here's an explanation of the braking problem i had. �Sounds similar to > > what you're explaining robert:
> > http://n600sedan.blogspot.com/2013/06/b ... build.html
> > marty
> > san francisco, ca
> > On Dec 31, 2013, at 9:05 AM, Robert James > rjamesblues@...
> > > wrote:
> > > �
> > > i will check again more closely, but do not think it is leaking > > > at that point.�
> > > On Dec 31, 2013 6:02 AM, "Eric Geiger" > > egeiger@...
> > > > wrote:
> > > > �
> > > > Make sure it's not leaking back into the car where the master enters > > > > the firewall. �It could easily be leaking there where the seal in > > > > inside it and u might not know because your carpet soaks it up.
> > > > ��
> > > > ------------------------------------------Eric Geiger
> > > > PRG-Nocturne
> > > > XXX-XXX-XXXX
> > > > Egeiger@...
> > > > On Dec 31, 2013, at 8:56 AM, "
> > > > richmccolman@...
> > > > " > > > richmccolman@...
> > > > > wrote:
> > > > > �
> > > > > Interestingly, the fluid in my Coupe's master cylinder reservoir also > > > > > has gone down a bit in the few weeks since I flushed and bled the brake > > > > > system. The pedal is firm and doesn't sink when I hold it down, so I > > > > > don't suspect a leak in the calipers, wheel cylinders, etc.
> > > > > So
> > > > > if there is an issue with the brake booster, what happens to the fluid > > > > > from the master cylinder? Does it eventually get sucked into the vacuum > > > > > line and intake manifold?
> > > > > Richard
> > > > > McColman�