mnvkngs65
CB750 Enthusiast
I just wanna ride!!!
Still with front brake issues... I rebuilt the master cylinder and it appears to function with check valve working. I also rebuilt the brakes including new piston seals. The brake lines were not replaced but were cleaned out with wire and compressed air passes easily.
Everything was reassembled and the brakes were bled without problem. The issue now is the pistons will not retract. I verified the check valve in the MC is open (brake fluid will easily and clearly "back" flow from the check valve hole when I apply pressure to the pistons).
The pads are not interfering with the movement of the pistons and the pistons are spotless. When I removed the brake to exam the pistons, check valve patency, etc. I noticed it takes a lot of manual pressure just to push the piston back into the brake housing, way more than I would expect.
I'm assuming it is a pressure issue somewhere along the line but all the lines appear open. I am going to try and to push the pad back in again after opening the bleeder valve. If it pushes in easily I will assume again it is a pressure problem not an issue with the piston, seal or brake housing.
Any thoughts?
Thanks!
Still with front brake issues... I rebuilt the master cylinder and it appears to function with check valve working. I also rebuilt the brakes including new piston seals. The brake lines were not replaced but were cleaned out with wire and compressed air passes easily.
Everything was reassembled and the brakes were bled without problem. The issue now is the pistons will not retract. I verified the check valve in the MC is open (brake fluid will easily and clearly "back" flow from the check valve hole when I apply pressure to the pistons).
The pads are not interfering with the movement of the pistons and the pistons are spotless. When I removed the brake to exam the pistons, check valve patency, etc. I noticed it takes a lot of manual pressure just to push the piston back into the brake housing, way more than I would expect.
I'm assuming it is a pressure issue somewhere along the line but all the lines appear open. I am going to try and to push the pad back in again after opening the bleeder valve. If it pushes in easily I will assume again it is a pressure problem not an issue with the piston, seal or brake housing.
Any thoughts?
Thanks!