Originally Posted By screamindriver
The water valves are tough to service even if you have the parts to get it done..Pay close attention to the O ring sealing area between the valve and core it needs to be perfectly round and smooth...Some will give up trying to keep it from leaking on the floorpan and do what you have there totally shutting off the water...I ended up getting the whole heater box kit from DMT and refinished the blend doors for new sealing foam and smoother operation..


Thanks for the info & I'll be sure to check the sealing area & O ring. Its gonna be a pain to remove the box but hope its easier than I think. Not much info on the early B's out there.