Helpful ReplyHot!Front brake removal

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Ken Olum
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2019/12/15 08:54:48 (permalink)

Front brake removal

 I have a 2009 Strada.  I'd like to take my front brake off and overhaul or replace it.  The outer (right side) caliper comes off fine, but then I'm stuck.  The inner caliber is held by a a rusty bolt with a large head and a small hex socket.  This bolt appears to go into a hole in the fork, and at the back end of the hole there is also what looks like a hex socket, which I likewise can't turn.  Between the brake and the fork there is a nut, which I can turn, but only about 1/6 of a turn in either direction.

It would be easier to fix if I understood the construction. Should I put penetrating oil in from the back?  Drill it out?

Thanks.

                                        Ken


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bentcyclist
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Re: Front brake removal 2019/12/15 10:04:47 (permalink)
Penetrating oil. It only requires a hex wrench from the back to remove it.
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tojesky
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Re: Front brake removal 2019/12/16 20:14:21 (permalink)
I believe the nut in the hole is a Torx 30. I know that is what it is on the CA2 with X-Eyed brakes.  

2013 CA2.0 - 700c
2014 ICE VTX+
2013 Invacare Force G hand cycle
2006 Corsa  (Sold July, 2013)
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Ken Olum
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Re: Front brake removal 2019/12/17 08:11:47 (permalink)
Thanks, folks.  This is the original brake and it's definitely a hex head.  I'm soaking it in penetrating oil now.
 
Just to make sure I'm not making some mistake, this is the back end of the bolt so I should turn it clockwise (looking into the hole from the back of the bike) to screw the bolt out the front, right?
 
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bentcyclist
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Re: Front brake removal 2019/12/17 11:10:20 (permalink)
Counterclockwise when facing forward?
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Ken Olum
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Re: Front brake removal 2019/12/17 12:05:46 (permalink)
I'm facing forward.  I'm sitting behind the front wheel looking into the hole in the fork.  I'm thinking the part with the hexagonal hole is the tail end of the bolt that holds on the brake.  If so I want this bolt to move away from me deeper into the hole so that it comes out the front side of the fork.  That's why I think I should turn it clockwise.  Am I misunderstanding something?
 
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bentcyclist
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Re: Front brake removal 2019/12/17 13:33:21 (permalink) ☄ Helpfulby Ken Olum 2019/12/22 13:21:44
I think you are overthinking this. To install a front brake, the brake has a threaded bolt affixed to it. That is slid into the hole on the front of the fork. On the back side of the fork goes a cylindrical nut that is pushed into the backside of the fork hole and meets up with the treaded bolt. A hex ball wrench is then inserted into the backside of the hole and is turned clockwise to tighten the brake to the fork. You do the opposite to remove the brake, turning the cylindrical nut counterclockwise so the affixed bolt of the brake separates from the nut. There are just two pieces, the brake and the nut.
post edited by bentcyclist - 2019/12/17 13:43:58
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Ken Olum
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Re: Front brake removal 2019/12/22 13:21:24 (permalink)
bentcyclist
To install a front brake, the brake has a threaded bolt affixed to it. That is slid into the hole on the front of the fork. On the back side of the fork goes a cylindrical nut that is pushed into the backside of the fork hole and meets up with the threaded bolt.

 
Thanks.  That was what I needed to know.  Unfortunately, I still cannot budge that nut, so I guess I will leave it as it is.  My reason for doing this in the first place is that there is some play in the brake.  When I apply the brake against some force the pads the swing forward a little bit.  But it doesn't seem like it is about to fail and at the moment I don't have any further idea how to get it off.
post edited by Ken Olum - 2019/12/22 13:55:13
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bentcyclist
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Re: Front brake removal 2019/12/22 13:47:14 (permalink)
Hit the nut with penetrating oil again and then carefully heat it up with a hair dryer and see if that will loosen it. Not too hot though. Also, you might remove front wheel and try turning whole brake to unscrew from stuck nut. Then take a long bolt and screw into the nut and gently try to tap the nut out of the hole.
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Ken Olum
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Re: Front brake removal 2019/12/25 07:43:14 (permalink)
bentcyclist
 Also, you might remove front wheel and try turning whole brake to unscrew from stuck nut.

It's not quite like this, because the brake is not a single unit.  Here's a picture from the front with the right caliper removed:

On the right is the left caliper, on the left is the holder for the right caliper, and in the center is the head of a bolt with a hex socket.  I think this must be the bolt that goes through the fork to the cylinder nut.  I cannot turn this bolt.  The part that holds the right caliper appears to have a threaded hole around the bolt, because I can "unscrew" it until it hits the left caliper.
Here it is seen from the right side of the bike:

In the middle is the holder for the removed caliper, and to the left is a nut.  This nut appears to also be on the same bolt as everything else.  It can be screwed in until it hits the fork or out until it hits the caliper holder.
 
So it seems to me that what I really need to do is to unscrew the bolt from the cylinder nut.  But the head of this bolt is not in great shape and it is thoroughly frozen.  I guess I could drill off the head, at which point I'll be able to remove all the brake parts.  Then maybe I can hammer the cut-off end of the bolt to remove the bolt and nut from the hole.
 
But I have a rideable bike now and I'm reluctant to convert it to an unrideable one unless I'm sure I can complete the job.
 
post edited by Ken Olum - 2019/12/25 07:46:39
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