I on the other hand have been driving my B61 1955 Mack for 20 some years and never touched a valve. I've installed new rear drums (had them custom cast by Dura brake) and gone through all the s cam stuff and pots. I seem to now be having a valve problem. When I apply the foot brake I'm ony getting 60 PSI at the rear pot. I would think it should be more around 100 PSI or full pressure. I would love feedback and the location of good information about these odd Mack air brakes. Thanks
Lots Of Valves
in Air Systems and Brakes
Posted
I on the other hand have been driving my B61 1955 Mack for 20 some years and never touched a valve. I've installed new rear drums (had them custom cast by Dura brake) and gone through all the s cam stuff and pots. I seem to now be having a valve problem. When I apply the foot brake I'm ony getting 60 PSI at the rear pot. I would think it should be more around 100 PSI or full pressure. I would love feedback and the location of good information about these odd Mack air brakes. Thanks
David B61