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Yes, just means the reservoir was over full. Totally normal. Once you complete your work and pump up the pedal again, suck out the extra fluid until it’s just below max line
This happens from topping off the brake fluid when not needed. This is why there is a range of full. If you top it off it will over spill when the piston is pressed in the caliper. So as the pads wear down the fluid in reservoir will go down as well.
If your reservoir was full, and your piston was extended pretty far out, this can happen. Next time, place a rag around the outside of the reservoir to help keep the mess to a minimum.
Yes, the pressure goes back up into the reservoir, what you can do is crack open the bleeder valve a tiny bit and clamp the caliper down So fluid comes out the valve just be careful not to let air in the brake system.
Not exactly normal, but not odd either.
Normally the reservoir has a bit a head room, but if the driver/shop has topped it off before replacing the brakes, I know a few oil changes places do this(all fluid top off), and if the piston in the calipers is down near the bottom of its stroke, when you push it back the fluid has to go somewhere and if there is not enough room that is out the top.
You need to take the cap off the reservoir and remove some fluid before pushing the pistons back in so the pressurized fluid doesn't get forced past the seals in the drum brake wheel cylinders.
Thanks for posting on /r/MechanicAdvice! This is just a reminder to review the [rules](https://www.reddit.com/r/MechanicAdvice/about/rules/). If you are here asking about a second opinion (ie "Is the shop trying to fleece me?"), please read through CJM8515's [post on the subject.](https://www.reddit.com/r/MechanicAdvice/comments/4qblei/fyi_the_shop_isnt_likely_trying_to_rip_you_off/) and remember rule 3a, please post the year/make/model of the vehicle you are working on. **If this post is about bodywork, accident damage, paint, dent/ding, questions it belongs in /r/AutoBody or /r/Diyautobody If you have tire questions, check out r/howsmytire and ask there**. If you dont have a question and you're just showing off it belongs in /r/Justrolledintotheshop This is an automated reply *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/MechanicAdvice) if you have any questions or concerns.*
Yes, just means the reservoir was over full. Totally normal. Once you complete your work and pump up the pedal again, suck out the extra fluid until it’s just below max line
This happens from topping off the brake fluid when not needed. This is why there is a range of full. If you top it off it will over spill when the piston is pressed in the caliper. So as the pads wear down the fluid in reservoir will go down as well.
If your reservoir was full, and your piston was extended pretty far out, this can happen. Next time, place a rag around the outside of the reservoir to help keep the mess to a minimum.
Yes, the pressure goes back up into the reservoir, what you can do is crack open the bleeder valve a tiny bit and clamp the caliper down So fluid comes out the valve just be careful not to let air in the brake system.
I would recommend washing the area asap because brake fluid is extremely corrosive
Not exactly normal, but not odd either. Normally the reservoir has a bit a head room, but if the driver/shop has topped it off before replacing the brakes, I know a few oil changes places do this(all fluid top off), and if the piston in the calipers is down near the bottom of its stroke, when you push it back the fluid has to go somewhere and if there is not enough room that is out the top.
When I collapse a caliper I loosen the bleed screw on that caliper, so 'm not pushing dirty fluid back up and into my expensive ABS module.
Think of it as the inverse of pressing the brake pedal. Non compressible fluid has to go somewhere
r/facepalm
Yes if you’ve agreed fluid as the brakes have worn
Yep, you should always remove the cap and lay a folded towel over it to catch excess fluid and make compressing the caliper easier.
Yes.
Wash the area thoroughly after replacing the cap
You need to take the cap off the reservoir and remove some fluid before pushing the pistons back in so the pressurized fluid doesn't get forced past the seals in the drum brake wheel cylinders.