This is how we wreck the brake caliper - SV650.org

northwind · 05-04-05, 07:35 PM

I meant to post this earlier but forgot... On sunday I decided to take a look at the cheap rear caliper I got on Ebay- my old one's on the way out. This new one's alright lookling but quite corroded on the banjoes etc.

Pistons are rammed all the way in so I figure I'll hook it up to an MC and poke them out. Connect it up, got to undo the banjo, and it snaps at the start of the thread. Dang.

OK then, moleys? Nope, won't grip at all, just chews up the remains.

OK then, screw extractor? Seems the perfect application, since there's already a hole. Nope, snapped off.

OK then, drill it out and use a bigger extractor? Nope, now I've got a screw extractor and the tip of a drill bit stuck in it.

So I grind it down to the face of the caliper, but the extractor goes in too far, no dice.

But here's where it really goes wrong. Ah-ha, I think, I can get at it from the back. Strip down caliper, remove piston (very very carefully with grips), take out seals, fill with penetrating oil, leave it a while. Now, get in behind the nipple up the bleed hole with a normal drill bit, and as it's reversed direction it only takes about ten seconds and the heat and movement shifts the nipple and it drops out. Beautiful...

Except, hang on...

Bleed nipples work by pressing their bases against a plate in the caliper, which I've just drilled through to try and remove it- in other words, I've cunningly made a permanently open bleeder.

How good am I at this mechanicking stuff?

05-04-05, 07:44 PM

Quote:

Originally Posted by northwind

How good am I at this mechaknackering stuff?

northwind · 05-04-05, 07:46 PM

Wanted: rear brake caliper

Spiderman · 05-04-05, 07:48 PM

sounds like a quality job, well done

05-04-05, 08:11 PM

Quote:

Originally Posted by northwind

Wanted: rear brake caliper

D'oh!

05-04-05, 08:18 PM

I wouldn't have known any better so thanks

Well they do say it's better to learn by other peoples mistakes

05-04-05, 08:19 PM

And the AC award goes to.......

05-04-05, 08:51 PM

Quote:

Originally Posted by burner

And the AC award goes to.......

I don't know, the rear torque arm one was quite good.

05-04-05, 09:16 PM

exactly why i won't touch my calipers !!

timwilky · 05-04-05, 09:22 PM

Quote:

Originally Posted by burner

And the AC award goes to.......

Why is it that when I read Northies post, I immediately thought A.C.

05-04-05, 07:35 PM	#1
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,083	This is how we wreck the brake caliper I meant to post this earlier but forgot... On sunday I decided to take a look at the cheap rear caliper I got on Ebay- my old one's on the way out. This new one's alright lookling but quite corroded on the banjoes etc. Pistons are rammed all the way in so I figure I'll hook it up to an MC and poke them out. Connect it up, got to undo the banjo, and it snaps at the start of the thread. Dang. OK then, moleys? Nope, won't grip at all, just chews up the remains. OK then, screw extractor? Seems the perfect application, since there's already a hole. Nope, snapped off. OK then, drill it out and use a bigger extractor? Nope, now I've got a screw extractor and the tip of a drill bit stuck in it. So I grind it down to the face of the caliper, but the extractor goes in too far, no dice. But here's where it really goes wrong. Ah-ha, I think, I can get at it from the back. Strip down caliper, remove piston (very very carefully with grips), take out seals, fill with penetrating oil, leave it a while. Now, get in behind the nipple up the bleed hole with a normal drill bit, and as it's reversed direction it only takes about ten seconds and the heat and movement shifts the nipple and it drops out. Beautiful... Except, hang on... Bleed nipples work by pressing their bases against a plate in the caliper, which I've just drilled through to try and remove it- in other words, I've cunningly made a permanently open bleeder. How good am I at this mechanicking stuff? __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

05-04-05, 07:46 PM	#3
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,083	Wanted: rear brake caliper __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

05-04-05, 07:48 PM	#4
Spiderman Where the hell am I? Mega Poster Join Date: Dec 2004 Location: Swingin' thru the urban jungle Posts: 7,451	sounds like a quality job, well done __________________ . "Computers are great! Not for communicating tho. They have one fundamental flaw ... they don't have eyebrows." AlpineCarStereo: you win ....... eeerrr ..... ummm ..... my undying support of you, the greatest Mod this forum has ever known. My Leige. davepreston: i bow to your modding godliness. vixis: He's this really cute Persian tea-boy, Im so not giving you his number :P

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05-04-05, 08:18 PM	#6
Stig Guest Posts: n/a	I wouldn't have known any better so thanks Well they do say it's better to learn by other peoples mistakes

05-04-05, 08:19 PM	#7
BURNER Guest Posts: n/a	And the AC award goes to.......

05-04-05, 09:16 PM	#9
Iansv Guest Posts: n/a	exactly why i won't touch my calipers !!