Re: Easamatic Rebuild Sources
Posted by 55PackardGuy On 2013/9/30 17:44:25
Here are some pics of the torn down MC. Most of it hasn't been cleaned up, so you can see about what the parts looked like.
I have included pics of wear parts that I would like to get some judgments on from you guys, including any insights into whether they might indicate reasons for brake failure.
Also, I'd like to get opinions on whether the piston bore needs any "re-boring." It looks pretty good to me, but what do I know? (See 3 pics). Ross also recommends bead blasting the bore. I'm wondering if this one needs it?
The piston itself looks practically new. The mechanic wanted to know if I wanted to re-use it or use the new one with the kit. My judgment was to put in the new one and keep the old one as a spare. I hope I never need it. Ross recommends putting a good finish on the new piston with 2000 grit sandpaper and light oil. I plan to recommend this be done.
Included is a pic of the hydraulic hose. The mechanic said he thought it had swollen due to brake fluid contamination. If this is not in the kit, should it be replaced? And, if so, is it regular vacuum hose? It's quite a bit bigger than most hoses I've seen.
There is a pic of the inside of the vacuum cylinder. Other than a few imperfections, and a noticeable ring where the piston seats in the upper position, I think it looks good enough to hold vacuum.
I know Ross recommends bead blasting the vacuum cylinder, and wonder what the recommendation with this would be. It seems to have some unevenness in places, but not a "rough" surface. Ross recommends a good scrub with Scotchbrite, and I wonder if that is all that's necessary in this case.
I'm especially interested in what people think about the scoring on the metal ring which, I believe, is the last pice to go into the bore. If there is anything that looks pitted to me, it is this. Any possibility that this could cause a failure? I don't see it named anywhere in the parts manual.
The business end of the compensator valve looks good, don't you think? I'm thinking it must have been debris that held it open.
One comment the mechanic had is that the screen that fits over the port in the vacuum valve You can see the screen after cleaning next to the valve in one of the pics. Could a plugged screen be one of the causes of failure?
Finally, a mystery pic, which I call vacuum filter? It's the underside of a cover and has two squares of very course threads.
This is by no means all the pics I've got, but I think they are the most helpful.
Attach file:
(98.19 KB)
(123.58 KB)
(93.09 KB)
(117.18 KB)
(110.87 KB)
(133.05 KB)
(118.35 KB)
(120.38 KB)
(127.44 KB)
I have included pics of wear parts that I would like to get some judgments on from you guys, including any insights into whether they might indicate reasons for brake failure.
Also, I'd like to get opinions on whether the piston bore needs any "re-boring." It looks pretty good to me, but what do I know? (See 3 pics). Ross also recommends bead blasting the bore. I'm wondering if this one needs it?
The piston itself looks practically new. The mechanic wanted to know if I wanted to re-use it or use the new one with the kit. My judgment was to put in the new one and keep the old one as a spare. I hope I never need it. Ross recommends putting a good finish on the new piston with 2000 grit sandpaper and light oil. I plan to recommend this be done.
Included is a pic of the hydraulic hose. The mechanic said he thought it had swollen due to brake fluid contamination. If this is not in the kit, should it be replaced? And, if so, is it regular vacuum hose? It's quite a bit bigger than most hoses I've seen.
There is a pic of the inside of the vacuum cylinder. Other than a few imperfections, and a noticeable ring where the piston seats in the upper position, I think it looks good enough to hold vacuum.
I know Ross recommends bead blasting the vacuum cylinder, and wonder what the recommendation with this would be. It seems to have some unevenness in places, but not a "rough" surface. Ross recommends a good scrub with Scotchbrite, and I wonder if that is all that's necessary in this case.
I'm especially interested in what people think about the scoring on the metal ring which, I believe, is the last pice to go into the bore. If there is anything that looks pitted to me, it is this. Any possibility that this could cause a failure? I don't see it named anywhere in the parts manual.
The business end of the compensator valve looks good, don't you think? I'm thinking it must have been debris that held it open.
One comment the mechanic had is that the screen that fits over the port in the vacuum valve You can see the screen after cleaning next to the valve in one of the pics. Could a plugged screen be one of the causes of failure?
Finally, a mystery pic, which I call vacuum filter? It's the underside of a cover and has two squares of very course threads.
This is by no means all the pics I've got, but I think they are the most helpful.
Attach file:
(98.19 KB)
(123.58 KB)
(93.09 KB)
(117.18 KB)
(110.87 KB)
(133.05 KB)
(118.35 KB)
(120.38 KB)
(127.44 KB)
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