Re: Easamatic Rebuild Sources
Posted by HH56 On 2013/8/15 17:56:15
If there is a catastrophic failure, I agree you need an immediate rebuild. But what if it is not a catastrophic but a gradual failure with a drop or two each time the pedal is pushed. The reasoning is if the seal has some leakage the fluid has someplace to go except the vacuum side.
There is supposed to be some moisture behind the seal -- but not necessarily from the port. That method of keeping the seal moist, I think is suspect. If you look at that lid with the U shaped tube I posted with the gaskets, it would be almost impossible for any to leak down into the port via that route. Here is a better view of a different lid also with a tube. They go to great lengths to place the tube above the fluid level.
In one of the writeups the description of how the seal was lubricated indicated that the wiping action the seal provides included some carryover into the space behind the seal to keep it moist. If that is the case there will be a slight weepage and eventual buildup that has to go someplace. In addition, as stated earlier if the vacuum side is leaking you would want to pull air into the chamber, not fluid so again they would want to keep the port fairly dry.
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There is supposed to be some moisture behind the seal -- but not necessarily from the port. That method of keeping the seal moist, I think is suspect. If you look at that lid with the U shaped tube I posted with the gaskets, it would be almost impossible for any to leak down into the port via that route. Here is a better view of a different lid also with a tube. They go to great lengths to place the tube above the fluid level.
In one of the writeups the description of how the seal was lubricated indicated that the wiping action the seal provides included some carryover into the space behind the seal to keep it moist. If that is the case there will be a slight weepage and eventual buildup that has to go someplace. In addition, as stated earlier if the vacuum side is leaking you would want to pull air into the chamber, not fluid so again they would want to keep the port fairly dry.
Attach file:
(82.50 KB)
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