Lube those caliper bolt pins!
- Thread starter Lbear
- Start date
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- 2014 QX70 AWD
IMHO, not overthinking this,
I can confirm CRC 5351 does swell up the rubber boot on some mfg or if you don't fully clean out the old OEM silicone grease
if the CRC grease mixes with the silicone grease that came with the car the rubber boot swells up and hangs up the calipers and you get squealing noises, happened to me with my old Honda when I was clueless about these things, for caliper pins, I use Sil-glyde
see link here...
https://www.mazdas247.com/forum/showthread.php?123854169-Lube-those-caliper-bolt-pins!/page6
even a CRC tech rep basically admitted it , it's not universal, he said for most driving apps, so what happens if you get stuck stop and go traffic for a long time and the brakes really heat up hot, the grease won't hold up, I'll stick with the silicon based and proven AGS Sil-glyde.
not all greases are the same, use the right product for the job....... AGS and NAPA are the same thing, NAPA is more expensive for licensing the product from AGS.....
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- Denver, CO
So I am a bit of a newbie with car stuff. What are caliper bolt pins, and is it something the dealer checks when they do the inspections with my free oil changes (guess I can ask them)?
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- 2014 QX70 AWD
No they do not check them during an inspection. I recently had my dealer look into my squealing brakes (when in for a new inspection sticker), and all they did was pulls the wheels and measure the remaining pad thickness. They didn't inspect the pins (even though I had mentioned that might be the culprit).
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- Denver, CO
Good to know, thank you.
My brakes don't squeal at all, but now I know there is something I should check. Guess I will now learn how to check them
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- 2014 QX70 AWD
Good to know, thank you.
My brakes don't squeal at all, but now I know there is something I should check. Guess I will now learn how to check them
Check out my thread in the other section. Many kind forum members offering helpful tips and suggestions!
https://www.mazdas247.com/forum/showthread.php?123859404-Rear-brakes-have-started-squeaking-20k-miles&p=6504572#post6504572
no dealers don't usually check the caliper bolt pins, you have to take off the calipers to inspect the pins...
the pins allow the brake caliper to slide smoothly , see video,
for the pins you're suppose to use high temp silicone base lubricant like Sil-glyde so it doesn't swell up the rubber boot, it main purpose is to keep water and dirt out of the metal pin / cylinder interface , but sometimes it gets dirty and needs to be cleaned otherwise the the action gets binded and you get sqeaky brake sounds.
DO NOT USE ANY OF THESE PRODUCTS SHOWN BELOW for the caliper pin they will congeal or swell up the rubber boot bind up the sliding action or turn to dust at high temps (just use Sil-glyde and you will be fine),
these metal / ceramic based greases are for the back of the pads or those tiny ears on the pads only, not the pins.
the word "grease" is very confusing to newbies, you can;t just use one "grease" for all brake parts.
use Sil-glyde for the pins and pin shaft but don't use it for brake pads and ears,
use whatever listed in the picture above for brake pads back and ears
the Sil glyde is not good for the brake pads back and ears because silicone is a magnet for dirt thus not recommended for those areas. Only good for the pin shaft and pin since those are not exposed to the environment and can handle the heat generated for excessive braking. The main purpose of the SIl-glyde is to keep moisture out and handle the high temp to allow the calipers to slide smoothly.
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- Denver, CO
no dealers don't usually check the caliper bolt pins, you have to take off the calipers to inspect the pins...
the pins allow the brake caliper to slide smoothly , see video,
for the pins you're suppose to use high temp silicone base lubricant like Sil-glyde so it doesn't swell up the rubber boot, it main purpose is to keep water and dirt out of the metal pin / cylinder interface , but sometimes it gets dirty and needs to be cleaned otherwise the the action gets binded and you get sqeaky brake sounds.
DO NOT USE ANY OF THESE PRODUCTS SHOWN BELOW for the caliper pin they will congeal or swell up the rubber boot bind up the sliding action or turn to dust at high temps (just use Sil-glyde and you will be fine),
these metal / ceramic based greases are for the back of the pads or those tiny ears on the pads only, not the pins.
the word "grease" is very confusing to newbies, you can;t just use one "grease" for all brake parts.
use Sil-glyde for the pins and pin shaft but don't use it for brake pads and ears,
use whatever listed in the picture above for brake pads back and ears
the Sil glyde is not good for the brake pads back and ears because silicone is a magnet for dirt thus not recommended for those areas. Only good for the pin shaft and pin since those are not exposed to the environment and can handle the heat generated for excessive braking. The main purpose of the SIl-glyde is to keep moisture out and handle the high temp to allow the calipers to slide smoothly.
great info ! thanks a lot
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- Plano, Texas, USA
For front brake, caliper slide pins are #10 in the pic and you loose #3 bolts to take pins out.
For rear brake, caliper slide pins are #11 in the pic and you loose #4 bolts to take pins out.
Torque specs for slide pin bolts:
Front: 23 ~ 28 ft-lbf
Rear: 17 ~ 22 ft-lbf
Make sure to clean the old grease, and apply proper new "rubber grease" discussed in this thread and Brake caliper clean up.
CX-5 Front Brake:
CX-5 Rear Brake:
For rear brake, caliper slide pins are #11 in the pic and you loose #4 bolts to take pins out.
Torque specs for slide pin bolts:
Front: 23 ~ 28 ft-lbf
Rear: 17 ~ 22 ft-lbf
Make sure to clean the old grease, and apply proper new "rubber grease" discussed in this thread and Brake caliper clean up.
CX-5 Front Brake:
CX-5 Rear Brake:
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- Plano, Texas, USA
Add another "rubber grease" Mintex Ceratec Lubricant recommended by Anchorman.
thanks Anchorman ! for the tip on the Mintex Cera Tec, looks like good stuff can handle up to 1000C with no problems ,
I think much better than copper grease, I can confirm your statement that those metallic greases do eventually clump up and turn to clay after a while.... I'll use the Cer Tec on the brake pads back but still stick with Sil-glyde as that has proven to work well and not swell up the rubber boot of caliper pins...
thx for picture of wire brush, did you use any spray cleaner or just cleaned with the wire brush ?
just got the Ceratec from eBay fro $3.65 shipped to USA
http://www.ebay.com/itm/182457472816
for caliper pins, NAPA Sil-Glyde
https://www.amazon.com/dp/ (commissions earned)
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- Denver, CO
Great info, thanks!
I used this.
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- 2016.5 CX-5 GT AWD titanium/black 2016 Miata Club ST MT white
Shouldn't this thread be in the brake section of this forum?
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- Plano, Texas, USA
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- Canada
Moving it now, thanks.
