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Discussion Starter · #1 ·
Hello all,

I will be replacing the compressor control valve in the near future (ordering parts shortly) as this was indicated in a previous thread that intermittent/inconsistent a/c is a symptom of the valve going bad. What I wanted to find out is if anyone has done this work on their S80, and if so, if the drier desiccant bag can just be replaced, or if it has to be the entire drier receiver part.

Adam
 

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Hello all,

I will be replacing the compressor control valve in the near future (ordering parts shortly) as this was indicated in a previous thread that intermittent/inconsistent a/c is a symptom of the valve going bad. What I wanted to find out is if anyone has done this work on their S80, and if so, if the drier desiccant bag can just be replaced, or if it has to be the entire drier receiver part.

Adam
I have not done this repair before but I've heard about this issue before. In regards to the drier desiccant bag, it is replaceable by itself per Volvo's service manual. The receiver/drier is integrated into the A/C condenser and cannot be replaced by itself. Only the desiccant bag can be replaced alone. I have attached a link to Volvo's service manual on how this is done. Basically on the bottom of the receiver/drier, there is plastic cap that is removed to allow you to replace the desiccant bag. I'm not sure if the caps comes off with common tools or if a special tool is required, hopefully someone can clarify that.

Desiccant Bag is part number 30776238 according to Tasca Parts.

Page 1:
https://workshop-manuals.com/volvo/...yer/component_information/service_and_repair/
Page 2: https://workshop-manuals.com/volvo/...nt_information/service_and_repair/page_18040/
 

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Discussion Starter · #3 · (Edited)
Thank you for sending that. I do notice a special tool is required for performing this replacement. Now I’m starting to wonder if I can get by on not replacing it given the short amount of time the system will be open to replace the valve. Plus I don’t have the special tool required for the job.

As for the special tool, by just looking, I’m not sure what it’s purpose would be in this application since it’s for the transaxle, but it’s also a discontinued part that doesn’t appear to be available for purchase.
 

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Thank you for sending that. I do notice a special tool is required for performing this replacement. Now I’m starting to wonder if I can get by on not replacing it given the short amount of time the system will be open to replace the valve. Plus I don’t have the special tool required for the job.
I was able to find a diy for this job posted on another forum. It appears that no special tools are really required, the one shown in the service information is used to support the radiator/condenser assembly. You could get around that by doing what the poster did or maybe just supporting the assembly with a jack and a block of wood. I would just investigate to see what parts are going to be strained before the support bar is removed to prevent any damage. The cap itself is just a torx that's twist to remove according the post. So if you want to replace it definitely seems doable, but like you said, you will probably be fine even if you don't replace it. If you do replace it, you might want to buy the cap too since there is an o-ring. I also found that there are some aftermarket replacements (on RockAuto) online too that include both the desiccant bag and the cap.

https://volvoforums.com/forum/2001-...53/2009-xc70-desiccant-bag-replacement-78856/

The cap: https://www.junk.se/4794-thickbox/30776239-volvo-plug-condenser.jpg
 

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Discussion Starter · #5 ·
I was able to find a diy for this job posted on another forum. It appears that no special tools are really required, the one shown in the service information is used to support the radiator/condenser assembly. You could get around that by doing what the poster did or maybe just supporting the assembly with a jack and a block of wood. I would just investigate to see what parts are going to be strained before the support bar is removed to prevent any damage. The cap itself is just a torx that's twist to remove according the post. So if you want to replace it definitely seems doable, but like you said, you will probably be fine even if you don't replace it. If you do replace it, you might want to buy the cap too since there is an o-ring. I also found that there are some aftermarket replacements (on RockAuto) online too that include both the desiccant bag and the cap.

https://volvoforums.com/forum/2001-...53/2009-xc70-desiccant-bag-replacement-78856/

The cap: https://www.junk.se/4794-thickbox/30776239-volvo-plug-condenser.jpg

That makes a lot more sense to me. Again, I appreciate the help on this. I am going to try to change out the desiccant bag as well since I will already have the refrigerant removed and it will cover both possibilities of the inconsistent a/c that I have (valve or clogged desiccant bag as indicated in the linked forum post).
 
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