1997 yamaha xj 600 rear brake caliper

I am trying to repair my rear brake caliper on my 1997 yamaha xj 600. DOes it have just 1 piston on 1 side or 2 pistons 1 on each side? I got 1 piston out but the 1 that faces the rim is stuck or is this just 1 piston and the other side does not move? Thx

 

there should be 2 pistons and they both should move. if its stuck ,you need to replace the one you got out, back in, and hold it in with a "G" clamp or the like , re- bleed the oil , and pump the stuck one out, they can be stubborn little b*ggers.
stu

 

OK I guess ill be doing that tomorrow. I bought 2 of these bikes. The 1 that runs had a stuck rear caliper and I rounded off the allen bolts that hold that pads in and now I cant get them out. The parts bike I got had stripped out mounts on the caliper. So I oredered 1 from Ebay. I got the allen bolts out but the 1 piston is stuck. Ill be puting it back together and clamping the 1 side. Thx for the info.

Also I just did the clutch rattle fix and now im on the brakes.

 

just looked on the Fowlers microfiche, allthough it only shows one piston, i'm sure its just to save duplicating the drawing,
strange one that caliper, it has 2 bleed nipples. in the same casting, has yours got the same?
microfiche is for xj600 n ,1997 , europe model.
https://www.fowlersparts.co.uk/parts/4149965/xj600n-4ke7-1997-050-b/rear-brake-caliper

 

Yes it has 2 bleeders. I have 3 calipers and they all have the same piston stuck, but I noticed they are each sticking out at different measurements. One is flush with the casing one is a few mm raised and another is a few more mm raised, so unless they made them all different those pistons are at different levels. Stuck at different levels.

 

yeh, they're just stuck at different levels

 

I hope to find out tomorrow.

 

Finally got it apart. It has 2 pistons.