David[b][user=1016]big..E.[/user] wrote: [/b][quote][b][user=1552]David[/user] wrote: [/b][quote][b][user=1016]big..E.[/user] wrote: [/b][quote]OY YOU,you answered your own statement…..David if i can see a leak i fail it…It does not matter where from!! A leak is a leak so a FAIL….(exept if you’re Welsh then admittedly a LEEK could be your tea);)……….As a tester i am not allowed to dismantle,so based on the fluid leak obviously something has failed in service use..please enlighten me….[/quote]
Hi big E,
Did I say I could see a leaking cylinder? I never said i could see an internal leak, I think I said you can’t fail a leak you cannot see, i.e. a brake cylinder is enclosed inside a drum out of sight, but I did say I failed the rear back plate for being contaminated with brake fluid (3.5.1g), which is only visual contamination, it does not mean that there is a leak?
I also mentioned the load sensing valve was leaking brake fluid, this I can see and I did say that there was no specific regulation to a valve for leaking, so regulation (3.6A.1) would be used, but a tester would have to ensure on the VT30 exactly what had been failed.
I did also make mention to some items failed which I said maybe VOSA would disagree
Thanks
David:D
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As already quoted from”THE MOT INSPECTION MANUAL”..3.6..A Leaks..RFR 1.”A leak in any part of the braking system”…….NO SPECIFIC COMPONENT REGULATION REQUIRED IT COVERS EVERYTHING…Your above statement is drivel..
Q:What else can cause a leak inside a drum/backplate anyway,to enable you to see visual contamination?BTW VISUAL CONTAMINATION MEANS YOU CAN VISIBLY SEE A FLUID LEAK NO MATTER HOW MINOR…We aint talkin shockabsorbers here are we….??
[/quote]
I agree with what you say about a leak in any part of the system it fails, what I am trying to get testers to see is that in the manual there is no mention of a brake cylinder leaking, “you can’t see them”, I pointed to (3.5.1g) which says a brake back plate contaminated with brake fluid or oil, “does VOSA consider this covers the leaking cylinder” is what I am trying to get testers to see?
You are also right in that there is nothing else inside a drum to cause a leak, and rightly so testers look visually as best they can to see if a cylinder is old or new.
So then what would you do if a brake cylinder inside a drum was new, the cylinder protrudes through the back plate to where it is bolted and you can see it is new, we all in our time have had faulty poor quality “cheap” cylinders which have proved defective and needed to be rechanged, so, the cylinders new, the back plate is contaminated with brake fluid, what you going to do now, fail it or pass it?
Suppose you did fail it then the customer a Joe public said he had recently changed it and he disagreed with your decision, he says, I forgot on my driveway to clean off the surplus contamination, or hadn’t time?
The next point is that I am trying to get across is, “let the rollling road and the testers manual make the decision for you”? How can I do that I here you saying?
We discuss this part later when you have answered the above.
Thanks
David:D
