My Auxiliary heater under the sofa on my 345 was not working..
The fan motor was not working from the dash control switch, and there was no heat. The heater control knob was stuck too(Valve was seized).
A closer investigation under the doghouse revealed why no heat...
It was disconnected from the coolant supply.
I have to assume that it was either leaking or the pipes were toast.
It was time for an intervention...
Here it is under the sofa..
The plastic deflector/cover is held in with a few screws... I pulled that off, then removed the 2 screws holding the heater box to the floor duct. This is tricky, as they behind the box, difficult to reach, and you need a stubby screwdriver.
Once it was loose, I had easier access to the heater valve. the pipes were so hard and old I just cut them.
Once I had the unit out, I was puzzled by why the rear of the vent was shut off with duct tape...
Here it how it looks when its out...
Screws out, I pulled it apart...
First set of screws take off teh mesh...
Second set of 4 screws takes the support off holding the heater core in.
The core pulls out.
I find its date stamp... 1984, so its is the original!
I take a few measurements to find a replacement, as i am pretty sure its a stock unit.
Some online research tells me that a INTERNATIONAL SCOUT heater core looks to be very close, apart from the thicness, and I think that will not effect the heating too much. I would have to make a spacer or use weatherstrip to pack out the 1/2" diffence.
1971-1980 TRUCK SCOUT, SCOUT II
MEASUREMENTS: 7-3/4" X 7-7/8" X 2"
Lets see if it works..
I will ry to get one locally so I can take the Airstream one in and compare, but $70 sounds reasonable.
That put aside I tested the fan... it works fine on both speeds, so I will have to work back thru the wiring and fuses on the airstream.
More to come!