What did you do to your Volvo today? Topic is solved

Post by **ZionXIX** » 22 Jul 2020, 12:32

bmdubya1198 wrote: ↑22 Jul 2020, 11:49 Ugh those quick disconnects SUCK. Such a pain to release. I bet that orifice tube is nasty, mine was caked up with so much garbage. I guarantee someone used stop leak to try to fix the evaporator leak, but of course it won't work since it couldn't get past the orifice tube.

Mine was not quite that bad.

Post by **ZionXIX** » 22 Jul 2020, 13:32

I purchased a bunch of o rings for these ac lines but I dont know which goes where. I have green and yellow that are same size but the green is little thicker. In this picture which looks more correct?

Post by **volvolugnut** » 22 Jul 2020, 16:23

I do not have a specific answer, but a generic o ring answer. O rings do not actually compress. They change from round to oval shape to seal. There is also a range of dimensions that are allowed when designing an o ring sealing design. Lacking any other answer, I suggest you use the green (larger diameter) o ring IF you are able to push it on to assemble the joint.
volvolugnut

Post by **abscate** » 22 Jul 2020, 17:37

You might find some guidance in a real forum that has a thread like

“comprehensive guide to o-ring sizes”

(i bumped it,,,its got a link to JimBee’s excellent tutorial. Too)

I’ve got a 1998 pulled apart and can make measurements on Friday

HNBR O-rings only, please

Post by **Ocelot** » 23 Jul 2020, 05:20

bmdubya1198 wrote: ↑22 Jul 2020, 11:49 Ugh those quick disconnects SUCK. Such a pain to release. I bet that orifice tube is nasty, mine was caked up with so much garbage. I guarantee someone used stop leak to try to fix the evaporator leak, but of course it won't work since it couldn't get past the orifice tube.

Can someone explain to me what does this part do in the AC-system? Just curious!

Post by **ZionXIX** » 23 Jul 2020, 06:24

Ocelot wrote: ↑23 Jul 2020, 05:20
bmdubya1198 wrote: ↑22 Jul 2020, 11:49 Ugh those quick disconnects SUCK. Such a pain to release. I bet that orifice tube is nasty, mine was caked up with so much garbage. I guarantee someone used stop leak to try to fix the evaporator leak, but of course it won't work since it couldn't get past the orifice tube.
Can someone explain to me what does this part do in the AC-system? Just curious!

The orfice acts as a pressure regulator and filter for the system. Its placed in a very inconvenient place. It could easily have been placed closer to the front of the engine bay for easier access.

Post by **CIK7** » 23 Jul 2020, 12:13

ZionXIX wrote: ↑22 Jul 2020, 13:32 I purchased a bunch of o rings for these ac lines but I dont know which goes where. I have green and yellow that are same size but the green is little thicker. In this picture which looks more correct?
20200722_143042.jpg

green are called ac o-rings and designed for ac components. they are more heavy duty and it looks like that would work better than yellow one.

Post by **CIK7** » 23 Jul 2020, 12:15

bmdubya1198 wrote: ↑22 Jul 2020, 11:49 Ugh those quick disconnects SUCK. Such a pain to release. I bet that orifice tube is nasty, mine was caked up with so much garbage. I guarantee someone used stop leak to try to fix the evaporator leak, but of course it won't work since it couldn't get past the orifice tube.

wow dude, gross! where is the orifice at? im replacing ac compressor, alternator, ps pump, evaperator, and ac lones for peace of mind for my fresh rebuild.

Post by **ZionXIX** » 23 Jul 2020, 13:12

CIK7 wrote: ↑23 Jul 2020, 12:15
bmdubya1198 wrote: ↑22 Jul 2020, 11:49 Ugh those quick disconnects SUCK. Such a pain to release. I bet that orifice tube is nasty, mine was caked up with so much garbage. I guarantee someone used stop leak to try to fix the evaporator leak, but of course it won't work since it couldn't get past the orifice tube.
There are 2 lines running underneath the coolant reservoir to the firewall. The smaller line is actually 2 lines bolted together. The orifice is in that smaller line. You have to remove the line completely before opening. I did it the hard way. I recommend unbolting the pieces behind the headlight before disconnecting at the firewall. It will give you more flexibility. Pay attention to the direction of the orifice when replacing.

Post by **bmdubya1198** » 23 Jul 2020, 13:22

Yeah, it's in the AC line along the passenger fender. There are some writeups on here showing the exact location.

What did you do to your Volvo today? Topic is solved

Re: What did you do to your Volvo today?