|
|
Post by donkeychomp on Feb 21, 2018 18:10:21 GMT 1
Got some LC2 calipers and the pistons won't budge. I've tried connecting the caliper directly to the master cylinder and have pumped brake fluid in but no joy. Anyone got an idea of how to shift them?
Alex
|
|
|
|
Post by mattybeckett on Feb 21, 2018 19:37:42 GMT 1
Blow down with airline. Keep ya fingers out the way of pistons as they will shoot out.
|
|
|
|
Post by Gunny on Feb 21, 2018 20:13:16 GMT 1
I had one in my rd80 even an industrial airline wouldn`t move,ended up killing the piston with vice grips and loads of wd40,got it out though
|
|
|
|
Post by headcoats on Feb 21, 2018 20:36:12 GMT 1
Think some folks used a grease gun to pump them out
Not LC but I did some with a foot pump !
|
|
|
|
Post by donkeychomp on Feb 21, 2018 21:47:09 GMT 1
If I had access to an air line I'd try it. Left it tonight soaking in WD...we'll see what happens!
Alex
|
|
|
|
Post by reedpete on Feb 21, 2018 21:49:45 GMT 1
Grease gun is the answer, same as we did the ones on the RZ
|
|
|
|
Post by JonW on Feb 21, 2018 22:53:23 GMT 1
Play heat over the caliper with a blow gun, not a torch. should expand the alloy enough to get em out when using normal hydraulic fluid and master cyl, always works for me. Airline is plain dangerous.
|
|
|
|
Post by headcoats on Feb 21, 2018 23:00:24 GMT 1
If you use an air line then just use a thin piece of wood so the pistons won't fly out but will be out enough to wiggle them out
|
|
|
|
Post by stusco on Feb 21, 2018 23:01:45 GMT 1
Grease gun fits onto bleed nipple pump it out clean it out
|
|
|
|
Post by donkeychomp on Feb 21, 2018 23:04:01 GMT 1
Heat I can try and will. Thanks everyone!
Alex
|
|
|
|
Post by huggy76 on Feb 22, 2018 10:59:03 GMT 1
A grease gun is the safest way and easy being an lc2 caliper as only one piston. Presuming we are talking front caliper of course.
|
|
|
|
Post by donkeychomp on Feb 22, 2018 12:16:42 GMT 1
Yes, front caliper, only one piston. I'll try a grease gun first on reflection...  Alex |
|
|
|
Post by JonW on Feb 22, 2018 12:45:11 GMT 1
youve already got it setup with a master cyl havent you? just try heat first...
|
|
|
|
Post by donkeychomp on Feb 22, 2018 17:40:41 GMT 1
Yes mate, one caliper hooked up, one on the bench. If the grease works on one caliper ok I'll try it on the other if heat doesn't shift it.
Alex
|
|
|
|
Post by donkeychomp on Mar 2, 2018 0:06:29 GMT 1
Thanks for the advice everyone. Grease gun arrived today. One piston out, other is a bit of a bugger but I'm getting there!
Alex
|
|
|
|
Post by JonW on Mar 2, 2018 4:09:20 GMT 1
tried heat and the grease gun?
|
|
phil38
Thrash Merchant
Posts: 426
|
Post by phil38 on Mar 2, 2018 9:28:37 GMT 1
Thanks for the advice everyone. Grease gun arrived today. One piston out, other is a bit of a bugger but I'm getting there! Alex You’ll need the one which is out partly back in to block the hole so the grease gun works. With mine I decided the pistons were going to need replacing so used a combination of air line and mole grips then spent many hours with emery cloth and picks tidying up the bores and grooves where the seals go. Worth the effor but by the time I’d got new Yamaha seals and pistons and paid someone to spray them it wasn’t cheap. |
|
phil38
Thrash Merchant
Posts: 426
|
Post by phil38 on Mar 2, 2018 9:36:00 GMT 1
|
|
phil38
Thrash Merchant
Posts: 426
|
Post by phil38 on Mar 2, 2018 9:40:41 GMT 1
|
|
|
|
Post by skint on Mar 2, 2018 13:19:20 GMT 1
+1 with the grease gun method. Just done mine that were well and truly seized.
|
|
|
|
Post by donkeychomp on Mar 2, 2018 22:03:06 GMT 1
The adapter on my grease gun has broken. Will email the seller. On the plus side one caliper is apart and cleaned. I had to heat the bolt that holds the mounting bracket on to shift the nut. And better news is the piston is perfect, hope the other one is too as they are £40 a pair!
Alex
|
|
