Well-known member7173 Mustang Supporter Member
- Dec 10, 2017
- Reaction score
- My Car
- 1973 Mach 1 "Q Code"
I changed my front drum brakes to a Wilwood front disk brake system and added a power brake booster and master cylinder from Leeds, the calipers are dual piston. After ordering and installing a new proportioning valve from NPT (Item # 2B091-20AA) I bench bled my master cylinder tonight and installed it. My two questions are this, (1), I am not getting any fluid to the rear brakes, I did start out the bleeding without the tool to lock the proportioning valve in place and then installed the original blocks seized up switch to help keep the shuttle valve in place but still do not get fluid to the rear brakes. The master cylinder fluid is not going down at all. for anyone with this proportioning valve, how do you reset the shuttle, there is no "push button". BTW, these are completely new lines and master cylinder and have never had fluid in them until now. Question 2, for the Wilwood dual piston front disk brake caliper, it is currently set up for forward mounted calipers, there are two bleeder screws, one on top of the caliper and one on the bottom, do I loosen both to bleed or just one of them? Also, I have used both standard and metric sockets on the bleeder screw and none seem to fit, any thoughts on this? Thanks for any advice on this.