Had this issue years ago, but don't remember the fix. When I apply the park brake,air is escaping from the master cylinder . Is the issue the P brake pull or the master?
Thanks, mike
Where is air coming out? picture?
What kind of bus/parking brake system?
happy coaching!
buswarrior
Ooops, this may help
1968 mci 5a
Quote from: mikke60 on April 01, 2016, 12:55:13 PMOoops, this may help
1968 mci 5a
But what kind of brake system? In the past 4-5 decades, there have been two main braking systems, "DD3" and spring-parking/emergency brakes (we'll ignore my bus, which was built with a 4-foot long lever next to your knee and a steel rod the size of your middle finger running from under the driver's seat to the rear axle for a parking/emergency brake). There wasn't a clean switch over between the two (generally, spring brakes were later) and some buses built with DD3's were modified and updated. So you need to specify -- the way the park brakes works is different between the two.