KX Riders

Maintenance & Technical => KX500 Original => Topic started by: alexander-vmann on August 18, 2015, 08:17:05 AM

Title: correct way to install rear calipper?
Post by: alexander-vmann on August 18, 2015, 08:17:05 AM
so today at the track i notices something strange, the banjo bolt on the rear calipper rubs against the swingarm! surley this cant be rigth!? so i think the calipper is mounted wrong? but how do i correctly mount it?
Title: Re: correct way to install rear calipper?
Post by: Foxx4Beaver on August 18, 2015, 08:20:02 AM
post some pics from different angles if you can.
Title: Re: correct way to install rear calipper?
Post by: Foxx4Beaver on August 18, 2015, 08:44:19 AM
here's a quick pic of mine...
it's pretty "cut-n-dry"...really no way of installing it wrong...

(http://i895.photobucket.com/albums/ac152/foxx4afoxx2/IMG_0190_zps12umyrhy.jpg) (http://s895.photobucket.com/user/foxx4afoxx2/media/IMG_0190_zps12umyrhy.jpg.html)

you could have some issues with things being worn out...or a slight chance something's bent.
Title: Re: correct way to install rear calipper?
Post by: alexander-vmann on August 18, 2015, 09:11:54 AM
looks the same but mine is closer to the swingarm, it has some play in it, ill try to post some pictures tomorrow
Title: Re: correct way to install rear calipper?
Post by: alexander-vmann on August 19, 2015, 02:30:42 AM
(http://i51.photobucket.com/albums/f373/Alexander_Veldman/20150819_1551461_zpsovw7a5tn.jpg)

looks like something has been rubbing against it
(http://i51.photobucket.com/albums/f373/Alexander_Veldman/20150819_1522381_zpsazatnq43.jpg)

(http://i51.photobucket.com/albums/f373/Alexander_Veldman/20150819_1523131_zpssikh7uzj.jpg)

not just the banjo bolt, the mounting bolt rubbs against the swingarm too!

(http://i51.photobucket.com/albums/f373/Alexander_Veldman/20150819_1522281_zpsrvgowtlt.jpg)
Title: Re: correct way to install rear calipper?
Post by: sandblaster on August 19, 2015, 02:59:31 AM
The caliper and the mount are suppose to float on two pins which is why you see those rubber parts between them.
The rubber acts like a spring.
Guys never service the pins so eventually they seize up or move very slowly.
Then bad things happen....  :|
Title: Re: correct way to install rear calipper?
Post by: alexander-vmann on August 19, 2015, 03:17:31 AM
are the pins supposed to move? or just the caliper?
Title: Re: correct way to install rear calipper?
Post by: sandblaster on August 19, 2015, 03:26:56 AM
Pull the mount off the caliper and you will see how it works.
Title: Re: correct way to install rear calipper?
Post by: alexander-vmann on August 19, 2015, 04:30:26 AM
i think i found out the problem, MAJOR play in the slide that goes on the swingarm, so i hold up the calipper as i tigthen the axle nut, and now it seems like it's not riding to low anymore
Title: Re: correct way to install rear calipper?
Post by: sandblaster on August 19, 2015, 05:38:02 AM
Cool.
Just a thought, you might want to use some air to push your caliper piston out and clean your seals really well...
It's amazing the difference it can make on brake performance.
Title: Re: correct way to install rear calipper?
Post by: alexander-vmann on August 19, 2015, 06:02:51 AM
Cool.
Just a thought, you might want to use some air to push your caliper piston out and clean your seals really well...
It's amazing the difference it can make on brake performance.

i cant even reach the brake pedal, i migth need one with a bigger surface, i only use it a few rare times when im sitting on the bike before a corner
Title: Re: correct way to install rear calipper?
Post by: Foxx4Beaver on August 19, 2015, 07:46:57 AM
i think i found out the problem, MAJOR play in the slide that goes on the swingarm, so i hold up the calipper as i tigthen the axle nut, and now it seems like it's not riding to low anymore

what I figured...
unfortunately that's only a temporary fix.
Title: Re: correct way to install rear calipper?
Post by: KXDINO on August 19, 2015, 07:56:57 AM
The swingarm wears out were the carrier sits , I get that area welded than grind and file back so the carrier slides back and forth nicely than the banjo bolt wont wear in to the swingarm  , as my caliper was showing signs of massive wear I bought a new 450 one and hose and fitted it , it a tad lighter and the banjo bolt is on top so it wont dig in the swingarm , this was on a 250 06 2t.
Title: Re: correct way to install rear calipper?
Post by: Foxx4Beaver on August 19, 2015, 08:03:48 AM
I've seen guys cut off rails/slides from other swingers and weld them on in replace of the bad one on the original swinger.