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SV650.org - SV650 & Gladius 650 Forum (http://forums.sv650.org/index.php)

- SV Talk, Tuning & Tweaking (http://forums.sv650.org/forumdisplay.php?f=111)

- - Caliper overhaul. (http://forums.sv650.org/showthread.php?t=123213)

yorkie_chris

31-12-08 02:01 PM

Re: Caliper overhaul.

Quote:

Originally Posted by Dangerous Dave (Post 1731392)

It is very good for the novice mechanics, there are other more basic ways to do things, but the Haynes manual does show you the original and more professional ways of doing things.

Like where it tells you to lube the pistons with brake fluid :smt072

dirtydog

31-12-08 02:21 PM

Re: Caliper overhaul.

Quote:

Originally Posted by Dave20046 (Post 1731382)

My rear one was seized in solid, had to use hot and cold, an awl, a hammer, shed loads of penetrant, pliers, molegrips and a lot of frustration.

I had a rear one like that a while ago, i just binned it in the end and got a half decent one off ebay which i rebuilt with the new seals that i'd bought for the knackered one

Dangerous Dave

31-12-08 02:23 PM

Re: Caliper overhaul.

Quote:

Originally Posted by yorkie_chris (Post 1731428)

Like where it tells you to lube the pistons with brake fluid :smt072

Uhh... yeah... Its the seals not the pistons though, just like you smear a little oil on the O-ring of the oil filter. Use any other product and you contaminate the brake fluid.

yorkie_chris

31-12-08 02:27 PM

Re: Caliper overhaul.

Use brake fluid without rubber greasing the seals and the fluid gets behind dust seal, oxidises (or whatever it does) into that crystalline $hite and locks the dust seal onto the piston even quicker than normal. Better to assemble it dry than have that happen.

I don't use brake fluid untill I start bleeding the system. Bit of rubber grease getting into the fluid isn't going to kill you.

Dangerous Dave

31-12-08 03:06 PM

Re: Caliper overhaul.

Quote:

Originally Posted by yorkie_chris (Post 1731458)

I don't use brake fluid untill I start bleeding the system. Bit of rubber grease getting into the fluid isn't going to kill you.

I know, but the Haynes manual is written for the lesser experienced mechanics following the professional methods. Not many people feel the need to ask for more experienced advice, they will follow a trusted source of information.

arcdef

31-12-08 03:11 PM

Re: Caliper overhaul.

so do i use rubber grease in the pistons or brake fluid lol??? would a seized rear brake be responsible for the brake lever not returning back to normal every so often??

Dave20046

31-12-08 03:16 PM

Re: Caliper overhaul.

Quote:

Originally Posted by arcdef (Post 1731494)

so do i use rubber grease in the pistons or brake fluid lol??? would a seized rear brake be responsible for the brake lever not returning back to normal every so often??

Check your fluid too.

yorkie_chris

31-12-08 03:23 PM

Re: Caliper overhaul.

You use the grease behind the seal recesses, then pop the seals in. Press down on them and rub around to remove excess, wipe a little onto the sides of the piston, fit the piston. (idea is to use the grease to stop water ingress into the places where it will cause trouble, i.e behind the seals)

Lever not returning sounds more like master cylinder or lever issues.

Dave20046

31-12-08 03:32 PM

Re: Caliper overhaul.

As said (possibly on this thread) if you do have a haynes there's a breakdown of the mastercylinder in there.

Alpinestarhero

31-12-08 04:11 PM

Re: Caliper overhaul.

Quote:

Originally Posted by arcdef (Post 1731494)

so do i use rubber grease in the pistons or brake fluid lol??? would a seized rear brake be responsible for the brake lever not returning back to normal every so often??

If the lever dosn't return, squirt some WD40 on the springs found behind the footpeg mounting plate before you go about dismantaling calipers

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