Brake fluid loss

Well can't say I wasn't warned but check this out...
Missus was taking the Toyota to the car-wash today, oh that's handy hang on a minute, I quickly deflated my spare. Ask the guy to inflate that to 10 psi, recommended by Gunson. Remember 10 psi. Five times I told her!! Off she goes, I got everything set out. Back she comes, I grabs the wheel and attaches it to the bottle. A vertical jet of Dot 4 from the master cylinder. What the...? Quickly disconnect the valve. Must have been about 30psi in the tyre, I never checked. Did you ask the guy to put 10 psi in it? Yes, told him what you were doing. Argh!
But as it happens, probably for the best as it turns out. There must be a microscopic hole on the master cylinder. I always wondered why the top was always wet, despite new cap and wiped off constantly.
 
Master cyl caps will ALWAYS have a small hole in them so that air can get in to replace fluid used up as brake pads wear.....
 
No worries, I rebuilt it last year, but the hose to the slave is jammed in there good and won't move. So to replace meant buying the master cylinder and the hose. And I had a lot to get at that time. Both in me basket at Geoff's now.

Ever hear of the Ship of Theseus or Theseus's Paradox?
 
Master cyl caps will ALWAYS have a small hole in them so that air can get in to replace fluid used up as brake pads wear.....
Not all. A lot of yanks have a solid cap with a membrane underneath, which seals the cap and moves downwards as the fluid level drops. This also has the added benefit of sealing the system keeping moisture out.
 
Well can't say I wasn't warned but check this out...
Missus was taking the Toyota to the car-wash today, oh that's handy hang on a minute, I quickly deflated my spare. Ask the guy to inflate that to 10 psi, recommended by Gunson. Remember 10 psi. Five times I told her!! Off she goes, I got everything set out. Back she comes, I grabs the wheel and attaches it to the bottle. A vertical jet of Dot 4 from the master cylinder. What the...? Quickly disconnect the valve. Must have been about 30psi in the tyre, I never checked. Did you ask the guy to put 10 psi in it? Yes, told him what you were doing. Argh!
But as it happens, probably for the best as it turns out. There must be a microscopic hole on the master cylinder. I always wondered why the top was always wet, despite new cap and wiped off constantly.
Hi, sorry , I know it's an old thread but...
Did the bleed kit fit the reservoir, looking to get one but they only seem to have upto 46 mm caps, my P6 cap measures around 80mm ?
Howard
 
Hi, sorry , I know it's an old thread but...
Did the bleed kit fit the reservoir, looking to get one but they only seem to have upto 46 mm caps, my P6 cap measures around 80mm ?
Howard
I purchased an 80mm cap off of eBay for £5 and modified it to fit my gunsons eezibleed. You only need to drill a hole in the centre of the cap. Think it's girling.

I stopped using the kits to push the fluid through using a spare tyre. I find it so simple to use my pela pump. (Oil extractor). I used a piece of rubber hose to connect to the pipe and fit it over the bleed nipple. Fill the reservoir up, pump up to create a vacuum then open the bleed nipple. So easy.
 
Hi, really appreciate the reply, thought I might have to find a cap and drill it, at least I know they are on the bay. Will look into a Pela pump option.
Thanks Howard
 
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