Re: KPack's 1954 Panama

Posted by DavidPackard On 2021/4/13 14:23:21

Kevin;

If I remember correctly there were two designs in the routing of brake lines for dual master cylinders. One is the fore/aft plumbing, and the other is diagonal. I believe they were considered equally acceptable. If the replacement master cylinder does not have a residual pressure check valve then that part is frequently mounted externally. A system with 4 drum brakes would not need a proportioning valve. Now if that valve you have is really a residual pressure check valve then it is plumbed to service all locations that have drums, not disks . . . in your case with all drums there is no need of a proportioning valve, but there should be a residual pressure check valve. Remember that may already exist inside the master cylinder. Do you know what master cylinder you have . . . meaning original application?

dp