1970 Wagoneer Heater Switch Vacuum Leak
Posted: Sat Oct 16, 2021 11:22 am
Hello all,
I'm in the process of returning my 1970's heat back to factory (previous owners wired straight to the blower motor, bypassing the switch). I've gotten power back to the switch, but I have a big vacuum leak coming internally from the switch itself. It's leaking between the two circular plates above where the vacuum lines enter the switch assembly (see in the pictures below). I separated the two circular plates and did not see anywhere that an o-ring would exist or be able to even fit. I can't silicone the two pieces because the top one needs to spin. Any idea what exactly the solution for a vacuum leak is here?
Thanks in advance!
Scott
1970 Wagoneer, 350/th400
Chicago
I'm in the process of returning my 1970's heat back to factory (previous owners wired straight to the blower motor, bypassing the switch). I've gotten power back to the switch, but I have a big vacuum leak coming internally from the switch itself. It's leaking between the two circular plates above where the vacuum lines enter the switch assembly (see in the pictures below). I separated the two circular plates and did not see anywhere that an o-ring would exist or be able to even fit. I can't silicone the two pieces because the top one needs to spin. Any idea what exactly the solution for a vacuum leak is here?
Thanks in advance!
Scott
1970 Wagoneer, 350/th400
Chicago