Day one... Evap replacement
hey there friend..
Going back over my records... When the compressor LAST seized, I recall they did NOT replace the dryer unit. for reasons I cannot recall. The evap was replaced prior to that failure. Maybe 5 years ago.
Ok, so far so good. Spent the day removing the dash. and the AC/Heat plenium box.
The hardest part?.. Draining the coolant, and removing the hoses from the heater core. A real knuckle banger The PetCock on the radiator is a bitch to open due to location. Removing the line to the condensor helped, as was the removal of the compressor belt.
A Trick for future use...To hold up the dash, I grabbed what I could.... I had 1000 feet of cat 5 data cable in the shed...I cut off two pieces and lassoed the dash with the cord, using the visor hardware as an anchor. Unplugging all electrical harness' under the dash is essential, plus removal of the ground strap, and the hardware at the front of the center console...you can pull the dash back toward the seat, and just let it hang.
Once the three nuts on the firewall are removed, the torx studs removed from the expansion valve, then hoses disconnected, the box comes out easily. The tools to remove the hoses came from autozone, something like 8 bucks for the set of four.
Once you separate the plenium box with the many screws that hold it together, the damage to the evap is evident, at the bottom, in fact, the dye in the refigerant that leaked out coagulated at the condensation drain. I wiped it out the housing with soapy water, dried and then coated the plastic with armour all.
I actually have purchased the wrong Evap. The one I purchased is the Newer style, the one I need is the older style. The two look like they may be interchangeable, but the larger line up to the mounting flange of the expansion valve, is fabricated further away on the newer style. Which is called the "Serpantine" Newer sytel. So I gotta exchange for the old style. No biggie... That'll set me back a day due to the holiday...I'll just go rent a nice car for the interim.
And with the evap, they give you a bunch of o-rings.. that is cool.
And yes, I got a new dryer.. I'll put it in last!
Ok, as per your suggestion Bjlv.. I'll run the engine when I connect the vacumn pump. I take it you mean JUST the engine running for heat, and NOT with the AC compressor engaged??? I also have 8oz of pag 46 oil ..to pour into the evap..correct? And the pump is connected to the low side.. right?.. There are NO stupid questions..Right?? Wrong??. Whos on First??
Have a great Memorial Day, and thanks for your sage advice. I may try again to take pictures of the disassembly for those who may wish to try this. It is not so hard. Just takes some patience.