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05-02-2018, 09:50 AM | #57 |
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On the OEM PP Brembo calipers, I just use my fingers to slowly push the pistons back in, just make sure to remove the cap on the master cylinder. I cannot imagine AP calipers are any different?
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05-02-2018, 01:19 PM | #58 |
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You can push the AP pistons back in by hand, but I'd recommend wearing leather gloves, they're sharp enough to cut you.
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05-02-2018, 01:33 PM | #59 | |
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Quote:
For any caliper, if you cannot push in the pistons by hand, it *probably* needs a rebuild. |
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05-02-2018, 01:40 PM | #60 |
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The first few times I pushed the pistons back in my CP8350 I could do it by hand. Now I need to use an Irwin clamp to do it. While I understand being able to do it by hand means they are sliding smoothly, I'm hesitant to think they need a rebuild after one year. Mike, do you want to expand on your statement? The pedal still feels good and I'm not getting any noticeable drag.
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05-02-2018, 03:34 PM | #61 | |
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Finding out the hard way can have more severe consequences, including burning up race pads needlessly, or having brake fade prematurely. A non-race caliper with an out dust boot/seal will have a longer service life between rebuilds |
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The Following User Says Thank You to CSG Mike For This Useful Post: | Pat (05-02-2018) |
05-02-2018, 03:38 PM | #62 |
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After I posted that I called Essex. They told me there are no significant downsides to my situation other than needing a tool to compress the pistons (a minor inconvenience). Mike, in theory I agree with what you said: "...burning up race pads needlessly, or having brake fade prematurely." However, I think that is an extreme situation and not at all what I am experiencing. Given my minor inconvenience, I'll gladly deal with it instead of shipping them off to be rebuilt annually.
Speaking of which, does anyone have a favorite brake spreader tool for calipers like this? This Lang tool looks appealing. Has anyone ever used it? Amazon link here |
05-02-2018, 03:55 PM | #63 | ||
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Quote:
https://www.amazon.com/Lisle-29100-Q...5290701&sr=1-6 Symptoms generally appear suddenly. It's similar to overheating your calipers; generally there's no consequence until one day you have a sudden failure. That's why I run temp strips like this (black = activated): https://www.instagram.com/p/BOGJxgJjVo5 Per AP Racing (https://www.apracing.com/Info.aspx?I...ProductID=2858) Quote:
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05-02-2018, 08:04 PM | #64 |
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The Lang tool doesn’t spread out far enough to compress the pistons on the AP Racing calipers. Might purchase the Leslie tool if it can spread further.
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The Following User Says Thank You to skylinekin For This Useful Post: | Pat (05-02-2018) |
05-02-2018, 09:49 PM | #65 |
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You can use the Lang tool to compress the pistons if you push against the worn out brake pads inside the caliper.
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05-02-2018, 10:41 PM | #66 |
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When I used the Lang tool and just grabbed the backing plates. You can also take one pad out and fit it in there.
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05-08-2018, 02:30 PM | #67 |
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My AP pistons have always been difficult (but not impossible) to compress by hand, since brand new. Now I just use the Lang tool with worn-out pads.
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