Packard Forum Index » Project Blogs

Attach file:

---

  (165.15 KB)


  (106.22 KB)

Heater leaks can be somewhat deceptive. If it is definitely coming from inside the box then core or a header. It might be possible that water is squirting from a loose clamp landing inside the box but with hoses usually well outside I wouldn't hold out much hope.

If there is a wet spot on the ground and it is not running out the air vent where the duct hose connects it could be a hose from around the thermostatic valve leaking and running down the firewall. I had that happen but the usual problem with the valve is the rubber seal around the stem gives up. Water runs down the inside of dash under dash pad and carpet. It can pool under carpet or sometimes drops out the hole for body to frame bolt location and onto the ground.

Attach file:

---

  (96.76 KB)


  (70.24 KB)


  (128.11 KB)

most likely the seal is bad in the Ranco valve. Repair kit at NAPA is about $10 if you want to tackle it yourself. I believe there is a "how to" on this website somewhere, look in the literature section. I've also seen articles and videos on the internet.

That it. Frequently it runs behind the dash pad and carpet and you never see it -- keep smelling the antifreeze odor but don't know where it is coming from until the carpet gets wet or soggy.

You can download BigKevs instructions on how to replace a Ranco heater valve seal from the how to section and order the seal at NAPA. Not too bad a repair although sometimes bending the tabs over to release the tube from the mount and housing without damaging the tab is a pain.

With what appears to be a fair amount of liquid it is probably the seal but there is a slim chance a hose is leaking at the clamped fitting. With the hose usually butting right into the opening in firewall a leak can easily come inside and appear like a seal problem.

I did a rebuild of mine using Kev's instructions. not bad, but yes bending the tabs are a PITA! I don't even know if mine works, but it held compressed air pressure so that is good news I hope.

while you are there with a camera...can you take some pictures of the firewall pad and heater plenum. I didn't take very good pics of all of that when I took it apart and it would help in my reassembly soon.

thanks