The low pressure service port is on the hose running from the compressor to
the firewall. If you're unsure which is low and which is high, FIND OUT!!! The
warnings on the cans say the cans can rupture if connected to the high
pressure port.
The low pressure service port on mine was located below and to the left of the
intercooler. Remove the rubber "shield" around the intercooler to make the
port more accessible. Remove cap on service port. screw on R134a service port
adapter and tighten. I could not access the high pressure service port on my
505 which I believe is located below and to the right of the coolant resevoir.
Step four -- adding refrigerant:
Have a friend around while you do this, one good breath of 134a will knock you
out. If you're somewhere where you don't get away from it, you could die. A
friend could save your life.
Follow directions supplied with kit. Make sure the "ECO" switch is up, the
recirculation switch is down (above "ECO" switch on mine) and the AC is set to
"as cold as it can get." I tried to be safe, since there is a lot of pressure
I removed the quick-disconnect with pliers. I cut the engine off between cans,
I wasn't sure if you were supposed to. It makes it easier to get the quick-
disconnect connector on and off if you leave the ignition switch on (it keeps
the compressor from turning backwards and keeps the pressure on that side of
the system down). I've heard putting three 12 oz. cans of 134a will not hurt
the cooling system, but don't take my word for it. The instructions that came
with my retrokit said to use the third can to fill the system to 85% capacity.
I've heard that too much coolant feels like too little. Since I didn't have
the spec, but have heard that Peugeots shouldn't take more than two pounds of
refrigerant, I used feel to decide how much 134a to use. I turned the can
upright and started the car with the AC on. Felt the kinda cool air coming out
of the vents. Waited for the temperature to stabilize. Went out and turned the
can over to let it drain into the system for a second. Stood the can upright.
Felt the air. I did this until I didn't feel any great improvement in the
coolness of the air. I didn't want to overcharge the system and think I
stopped at the right place. I then removed the can and placed a cap on the
valve. Screwed the blue cap on the pressure fitting and drove my newly air
conditioned car around with my windows up on this hot summer night. I hope
this has been informative to those of you wondering about retrofitting and not
a confirmation of my ignorance.
-Alan
End part 3/3