BUILD THREAD 1987 Olds 442 Project Build

[69hurstolds]

**Coming soon** A pic heavy disassemble of the A/C Box down to 6 pieces for clean up and reassemble.

THIS is what I'm interested in. 🙂 I've had them apart under the hood and replaced actuators and junk under the dash, but never had one completely out. I'm hoping to learn some stuff when I get round to mine.

 

[oldsofb]

I didn't take pics of the removal, but I did do a video.

Hutch

 

[Tony1968]

Nice job so far.... patiently watching !!!!!!!!

 

[69hurstolds]

Yeah, but when you're actually tearing it apart and rebuilding it....that's where I'm going to get the popcorn.

 

[oldsofb]

Yeah, but when you're actually tearing it apart and rebuilding it....that's where I'm going to get the popcorn.

Gotcha. Soon.

Hutch

 

[oldsofb]

A/C Box Disassemble:

So I looked around online for pictures or videos of taking one of these apart. I couldn't find a thing really. (Post if there is something). So here's my half *ss attempt at documenting it.

I'll say another thing. The directions in the Heater/AC Box Seal Kit have some pretty bad pictures in them. It's almost like they were good the first print, but got copied over and over again on a so so copier. Like a copy of a copy of a copy of a copy of a copy bad!

Maybe I'll scan them and insert my own pics and post them here somewhere. Who knows.

Give me some feedback as to whether I should post this disassemble in the "Cooling / Heating / AC" section here.

Thanks,
Hutch

 

[69hurstolds]

I vote that it remains in YOUR build thread. You should post it here as it pertains to YOUR car on HOW YOU DID IT. If you want to put a copy of it in the other threads, that's fine too, but I don't really want to chase your build all over the forums. Cuz I'm lazy. 🙂

 

[fleming442]

I remember there being one of those 7mm screws being deep down in a valley; that's about all I got. Pull the wipers, cowl trim, cowl screen, etc., and any screw that looks like it's holding it together.....

 

[oldsofb]

Heater/AC Box Disassemble: PART 1

Taking this:

and turning it into this:

Not finding any help on the interwebs (that I saw), I was only armed with the exploded view in the service manual and the poor image quality instructions from the seal kit.

Tools needed:
1/4 Nutdriver
7mm Nutdriver
5/16 Nutdriver
10mm Socket + Ratchet


Let start by removing the "Evaporator and Blower Upper Case"

The entire case is held down by (13) 1/4 screws (2 of those screws hold down the Evap Tube Bracket and 1 screw holds a wiring harness bracket)

Once those screws are removed you can remove the two 7mm AC Blower Relay screws:

Then the 7mm screw for the Evap tube clamp:

With that screw removed, you can now rotate the Evap Tube Bracket "clockwise" to clear from the top cover.

With all that out of the way the Upper Case can be removed. I used a flat blade screwdriver to gently pry around the perimeter until the butyl "goo" let go.

continued.....

 

[oldsofb]

Heater/AC Box Disassemble: PART 2

With the Upper Case off you can remove the Evaporator and Heater Core:

Remove the 10mm screw that holds the Accumulator to the "AC Compressor Control Relay" bracket

Pull the Evaporator

Remove the 5/16 screw that holds the Heater Core Hold Down + Ground Strap

Remove the Ground Strap with screw, remove the Hold Down clip, and remove the Heater Core

With the contents of the box removed I remove the AC Box Front Plate (This portion of the box is inside the firewall when on the car.

Remove the (5) 1/4 screws that hold the case (4 hold the case and 1 holds one side of the Air Baffle)

2 by the Vac Actuator

2 on the opposite side of the case

1 inside where the valve door is located that holds the Air Baffle. With that one screw removed you can rotate the baffle slightly which aids in getting the Front Plate off

The shaft for the AC/Heat door valve pokes through the bottom case. Make sure to not damage it on removal

Remove the Front Plate from main box

continued...