Originally Posted by Timaz
I guess we will try JB Weld because I don't know if there is passages of if the block is just hollo.
No, there's definitely passages in the block.
The green lines are part of the primary air brake system, the red are for secondary brake system. The aluminum valve is a one way check valve that keeps the secondary system aired up in case the primary air system looses all air.
The "tire valves" aren't required and are only used to fill air system, or a technician can check air tank pressure there for troubleshooting...
I wasn't be a smarty pants about the JB weld, and it's not an acceptable DOT repair.
But you may very well be able to creatively plumb up a group of fittings that will work, won't be pretty, but safe.
Or the part may still be available from Fleetwood REV...only a phone call will determine that.
EDIT.....I just went out and looked at my same vintage Eagle. That block also has lines though the firewall that feed to dash valves and air pressure gauge.... looks like a bear to remove.