[DML] Re: Aircon strained

["Dave Swingle" <swingle@xxxxxxxxxxx>]

If you really meant 500 PSI that would likely create leaks where none 
ever existed. That's quite a bit over any design parameter for the 
system. Ken Koncelic insists that he's done this without all the 
following steps, but if you try it his way there are a couple of 
screws that you can't find unless you know exactly where they are. 
The following is more the "normal" way. 

I've r&r'd a couple of evaporators now, it's not a fun project. 
---disconned the heater lines and the freon lines outside under the 
car (thru the gas tank access panel in the trunk, actually)
---remove right hand knee bolster
---Above the hvac box, remove the flap assembly that's way to the 
right. In there are three nuts that hold the heater box to the car 
(they are just above the fan). 
--remove the console
--loosen the radio cluster and pull it back away from the dash 
--reach-around from the driver side and disconnect the blue cable 
from the temperature knob assembly.
--remove the bracket under the HVAC box 
--pull the whole assembly out of the car. 
--the HVAC case splits into two parts, the Evap is in the right-hand 
part. (IN (Ken's) THEORY) you can remove the right half from the car 
without removing the left half, but I have not quite figured out how. 
Once you have that part separated, it further splits in half to 
reveal the evaporator. You can't pull the bottom off in-place because 
there is one screw that is in the middle of the assembly that you 
can't get to until the main box is in two parts. 

Let me know if pictures would help, I have one of these in pieces on 
my storage-room floor. 

Dave

--- In dmcnews@xxxxxxxxxxxxxxx, "Christopher Hawes" <chris@xxxx> 
wrote:
> My DMC aircon system had been put under great pressure... 500psi I
> think..... seemed fine after being regassed but then nothing.... 
turned out
> to be empty and when nitrogen was pumped in to find a leak the high 
& low
> and pressure switches were the overiding culprits at thishad failed.
> 
> Having replaced both switches at least one more leak remains.  The 
rubber
> hose which outputs near the high/low pressure switches when covered 
with my
> finger shows that some airflow is coming through from the evorapator
> assembly.
> 
> How do I get into the evaporator assembly as the screws if I 
remember
> correctly need to be done from above and the workshop manual is not 
very
> helpful on this one....





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