Rear brake condition

[Twistytee]

I'm in the middle of a complete braking system overhaul. Judging from the records I got with the car, they haven't been touched in over 5 years and it's doubtful the fluid was bled at that time. Based on past jobs, I suspected moisture and some mud build-up in the rears since they are the lowest point in the system. Sure enough, I found the following:



The pistons cleaned-up really well with no pitting or corrosion on the exterior surface:



But the inside of the cylinder has a few spots of pitting along the bottom perimeter. You guys think there's any harm re-using these? I can buy rebuilt if needed, but thought the location of the pitting shouldn't impact function as long as I keep the fluid fresh.

[snow663]

I wouldn't worry about it. The cylinder walls are clean and smooth and thats what matters.


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[asphalt4463]

I'd re-use them; they look pretty good. You're left index finger tip could looks like it could use some o'keefes, though.

[Eric93se]

With all the money you save fixing your own car treat yourself to a couple boxes of nitrile gloves . they can even be reused on light jobs.

[Twistytee]

Lol. I have 3 boxes on top of my cabinet. I tend to tear them easily when switching back and forth between mechanical and fluid work. Hard to get back on when my hands get greasy.

[Eric93se]

If they tear easily double up on them and get another brand next time. I've been using Costco nitrile and they're pretty good (not great).

[snow663]

I tend to wear nitrile gloves under impact resistant mechanics gloves. Then you can switch back and forth and when your gloves get soaked with grease they dont grease your hands up. Im always working on cars. Like every day. Grease, brake fluid, gas, oil is really not good for you to be absorbing through your skin. Not only does it dry out your hands but you're also putting your self at risk of skin cancer and neurological damage.


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[Eric93se]

Especially brake fluid!

[Twistytee]

I tend to wear nitrile gloves under impact resistant mechanics gloves. Then you can switch back and forth and when your gloves get soaked with grease they dont grease your hands up.

Thanks for the tip. I have a few mechanics gloves in different colors so I'll dedicate one for the rubber gloves. I use 5 mil nitriles for painting and 9 mil for fluid work. The thicker ones last longer but still tear. This is a good solution to that problem.

[snow663]

Thanks for the tip. I have a few mechanics gloves in different colors so I'll dedicate one for the rubber gloves. I use 5 mil nitriles for painting and 9 mil for fluid work. The thicker ones last longer but still tear. This is a good solution to that problem.

Safety first, then team-work!


When I drive an automatic...
"I don't know what to do with my hands" - Ricky Bobby

[JDStrickland]

Looks like somebody packed the inside of the piston with some grease. I would never do such a thing, but it's bad work, not an indication of a problem.

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Never mind, that grease (if that's what it is) is inside of the caliper, not inside of the piston cup.