Bad Brake rebuild

[Jersey Big Mike]

If you've ever wondered what happens when a caliper rebuild goes bad -- here it is.

Brake was a little soft when I put it on the bike (piston were all moving when I did the rebuild) but I thought that was the surface of the rotor that needed to be roughed up.
Well go out last time and I've got no rear brake 5 miles down the road.
Ok been here done this before -- Head for home and when we stopped at the walgreens I'm pumping the brakes to see what's going on and I see a puddle of fluid -- ok, maybe a o-ring didn't seat right, maybe not enough torque.
So I check the torque today and it was close maybe off by a pound -- still leaking - I take it off and discover the above!
New pistons are already on their way. FYI - J&P Cycles stocks them -- and they were on sale!

Will rebuild and test more in a few days when parts arrive.

 

[bigkelk9]

I'm curious as to where ur pad went and how the piston got scared up that way if a pad was properly set in aligning slots??

 

[Jersey Big Mike]

I'm curious as to where ur pad went and how the piston got scared up that way if a pad was properly set in aligning slots??

the pad was there with a HOLE the size of the piston burnt threw it -- that's pad inside the piston in the picture.
Pad was pushed cock-eyed; ie one piston only the others locked up.

 

[bigkelk9]

the pad was there with a HOLE the size of the piston burnt threw it -- that's pad inside the piston in the picture.
Pad was pushed cock-eyed; ie one piston only the others locked up.

Holy crap.. I have never seen anything like that.. I'm assuming u gotta replace that high dollar over priced rotor now too eh?

 

[Jersey Big Mike]

Holy crap.. I have never seen anything like that.. I'm assuming u gotta replace that high dollar over priced rotor now too eh?

Haven't checked that yet but you can replace just the brake surface and not the whole floating mech -- much cheaper!

 

[Jersey Big Mike]

Holy crap.. I have never seen anything like that.. I'm assuming u gotta replace that high dollar over priced rotor now too eh?

also - i edited the last post to now include the pic of the pads.

As my gf said, I'm an over-achiever in everything -- even when shit goes wrong!

 

[Th3InfamousI]

the pad was there with a HOLE the size of the piston burnt threw it -- that's pad inside the piston in the picture.
Pad was pushed cock-eyed; ie one piston only the others locked up.View attachment 38731

Must have gotten stuck open while the other released?

Sent from my 2PS64 using Tapatalk

 

[bigkelk9]

http://m.ebay.com/itm/BIG-DOG-MOTOR...OUTER-STAINLESS-12-5-/142233612308?nav=SEARCH

This is what I'm talking about over priced little bastards!! Lol

 

[bigkelk9]

And don't forget a new set of these

http://m.ebay.com/itm/BIG-DOG-MOTOR...-REAR-2005-UP-MODELS-/142233609349?nav=SEARCH

 

[BadDawg Bill]

If you've ever wondered what happens when a caliper rebuild goes bad -- here it is.
View attachment 38730
Brake was a little soft when I put it on the bike (piston were all moving when I did the rebuild) but I thought that was the surface of the rotor that needed to be roughed up.
Well go out last time and I've got no rear brake 5 miles down the road.
Ok been here done this before -- Head for home and when we stopped at the walgreens I'm pumping the brakes to see what's going on and I see a puddle of fluid -- ok, maybe a o-ring didn't seat right, maybe not enough torque.
So I check the torque today and it was close maybe off by a pound -- still leaking - I take it off and discover the above!
New pistons are already on their way. FYI - J&P Cycles stocks them -- and they were on sale!

Will rebuild and test more in a few days when parts arrive.

Ah, you need to put brake pads in between the calipers....

 

[bigkelk9]

Ah, you need to put brake pads in between the calipers....

Lmao.. that's what I said.. where's ur pads?? Lol.. he since updated with a pic of his holy roller pads

 

[BWG56]

Lmao.. that's what I said.. where's ur pads?? Lol.. he since updated with a pic of his holy roller pads

And don't forget to get one of these will your at it

 

[bigkelk9]

And don't forget to get one of these will your at it

Lmao.. I was gunna ask in another thread if that paint saver came with some radiator hose.. but I figured I'd be nice.. lmao.. that just really cracked me up

 

[BWG56]

Lmao.. I was gunna ask in another thread if that paint saver came with some radiator hose.. but I figured I'd be nice.. lmao.. that just really cracked me up

He who snoozes, loozes

 

[billybud]

If you've ever wondered what happens when a caliper rebuild goes bad -- here it is.
View attachment 38730
Brake was a little soft when I put it on the bike (piston were all moving when I did the rebuild) but I thought that was the surface of the rotor that needed to be roughed up.
Well go out last time and I've got no rear brake 5 miles down the road.
Ok been here done this before -- Head for home and when we stopped at the walgreens I'm pumping the brakes to see what's going on and I see a puddle of fluid -- ok, maybe a o-ring didn't seat right, maybe not enough torque.
So I check the torque today and it was close maybe off by a pound -- still leaking - I take it off and discover the above!
New pistons are already on their way. FYI - J&P Cycles stocks them -- and they were on sale!

Will rebuild and test more in a few days when parts arrive.

do you remember the link to buy the pistons ??

 

[prodiver]

If you've ever wondered what happens when a caliper rebuild goes bad -- here it is.
View attachment 38730
Brake was a little soft when I put it on the bike (piston were all moving when I did the rebuild) but I thought that was the surface of the rotor that needed to be roughed up.
Well go out last time and I've got no rear brake 5 miles down the road.
Ok been here done this before -- Head for home and when we stopped at the walgreens I'm pumping the brakes to see what's going on and I see a puddle of fluid -- ok, maybe a o-ring didn't seat right, maybe not enough torque.
So I check the torque today and it was close maybe off by a pound -- still leaking - I take it off and discover the above!
New pistons are already on their way. FYI - J&P Cycles stocks them -- and they were on sale!

Will rebuild and test more in a few days when parts arrive.

 

[prodiver]

My 06 Mastiff just did exactly the same thing. Do you recall the part numbers for the pistons. Thanks

 

[Jersey Big Mike]

My 06 Mastiff just did exactly the same thing. Do you recall the part numbers for the pistons. Thanks

https://www.jpcycles.com/product/244-884/performance-machine-caliper-replacement-piston

 

[SimpleMan_Omen]

It probably scarred the rotor and if there is still enough thickness in it then you don't have to replace it. When I got my Pitbull the disks were wavy and I had then ground down by True Disk LLC. They did a good job and it is only $45 a disk. Turn around was real fast too.
https://truedisk.net/