Yet another compressor oil question

Hello,
I am planning to replace the leaking evaporator, failing compressor along with other smaller maintenance items this weekend. I ordered the Toyota compressor from a dealership and was told it does not come with oil. But the service manual seems to suggest that it comes prefilled and you need to drain some out of it rather than adding more. I will know for sure when I get the parts in hand. Can anybody with experience let me know of the situation with oil for the new compressor ?

Even if I end up needing oil, I am planning to use HYB-1 from AC Pro over Toyota's magic potion. I am going with denso evap core (DENSO 4760041) since it is the OEM. I am going with a kit from rockauto for drier, expansion valve and o rings (GPD 9443170 ).

I have gone through the service manual and a few threads here at Priuschat related to compressor and evap core replacements. A local shop has agreed to evacuate the system before the replacement and fill the system up after the repair. I have made sure they have hybrid only equipment. Any thoughts on my approach and part selection from experienced people would also be appreciated.

My background: I am not a total noob with auto repair. I have done clutch and timing belt jobs in my drive way before (on a miata). For the prius in question, I have replaced the Coolant valve and bled coolant, fixed the dash issue with a replaced capacitor. This is my first post here BTW.

 

Thanks Mbwsr !
Thats great info and I appreciate you sharing details from your repair experience. I am guessing I will have to take a call on the oil once I have both compressors on a workbench. I am planning to do the expansion valve along with the evap core which are both under the dash. I am prepared for the carnage and a weekend long job! BTW I did that capacitor fix last year when the display was going out at random times. Will keep that battery lever tip in mind.

I may post pictures and videos from my job if everything goes according to the plan.

 

You have me scared straight . But I am going into this more prepared than my usual 'wing it' philosophy.

 

This message is posted since I couldn't post a long post about my AC repair. Cant post links unless you have had 4 posts and been a member for more than a day. This is my 4th post BTW.

 

All done ! I did end up having an action cam running during the disassembly on the inside. The footage was useful at some spots when I couldn't remember where things went. I havent't uploaded the disassembly video though.
Let me divide my post into sections for better readability. Here are some pictures and a video which y'all may find useful :

1. Drier sock: (@lech auto air conditionin): Old sock which came out was 72g and felt a little sticky. The new sock from Rockauto 50g. The old one was intact but had black color on the bottom which i am guessing is metal dust. Wasn't sure whether the old is heavy because of the water vapor it soaked up. See pictures

2. Lubricant: (@lech auto air conditionin ): I could only get about 20ml of oil out of the old compressor. It also had a dye in it. Managed to squeeze out the last few ml when I opened that hex bolt on the old compressor (did not touch that on the new one). The new compressor from the toyota dealership came with its own wire which plugs in. The new compressor had about 85 ml of clear oil. I did the formula given by service manual => oil to pour out of new compressor = 100 ml - (oil out of the old compressor) . That gives me 80 ml to pour out, which means I had to pour back in only 5 ml. That did not sound right. I went with pouring 25 ml back into the new compressor, which is equivalent of pouring out 60 ml. (Now I have 60ml of the expensive stuff !). Not too sure what I did was right; I went with my discretion. I am open to being corrected. See pictures


3. Resources I scoured:
i) Service manual for the car
ii) Threads from Priuschat:
iii) Youtube videos:

4. Additional suggestions for folks who want to tackle this job:

i. GPD 9443170 kit that I ordered from rockauto came with the wrong 14mm hex plug screwed into the condensor holding in the drier sock. The original was plastic, and the kit contained a metallic part with wrong size. So I ended up reusing the old part after replacing the o ring and lubing it up. See pictures

ii. For replacing the drier sock, you dont need to remove the whole condensor. I removed a few bolts securing the condensor and pryed it up slightly (may be 1/2") so that there is enough clearance for the above 14mm hex plug to drop. This would be helpful if you are only changing the drier sock and not the whole condensor. See pictures

iii. Nothing worse than needing one little part despite all the planning and prep. For me, it was the 4mm hex bolts which attach the refrigerant lines to the expansion valve. I found those pretty badly rusted. I decided to clean em up and reuse them with some ND11 on them. When I cleaned them up with a wire wheel, there was a lot of pitting. I would have gone with new bolts, but I was not in the mood for hunting down metric bolts in a standard country on a weekend during a pandemic. I am hoping this piece here spares somebody the kind of anxiety that will keep me up at night. See pictures

5. Final thoughts: It was a grueling weekend with a looming feeling I wont have a working car on monday. My suggestion is to not lose hope and keep at it. I would not suggest taking this task on for beginner DIYers. Finally, I have vacuumed and recharged the system at about Sunday evening. Recharged it with 460 g of refrigerant and made sure that the pressures were in spec according to the manual. I am thankful for the wealth of information on these forums and hope my writeup here helps someone in the future. Here are some additional pictures from the job.


Cheers,
Pavan

 

Thanks for your kind words.
I got the old compressor apart and was trying to find something obviously wrong with the old part. Here are some pictures of the old compressor. When the system was charged, high side was lower than spec and low side was higher than spec with this old compressor. I couldn't find any chunks in the compressor like the ones I 've seen on a thread on these forums. I couldn't find any metal shavings, chunks or deep scoring inside. I did find more oil in the compressor which I couldn't just drain by tilting it. At this point I am assuming that the electric part might've bit the dust. I do not want to spend more time on the old compressor.

Any thoughts on what could've gone wrong in this case ?
What are the common modes of failure on these compressors ?

I am also curious about the bolt heads on the ones holding the connector in place. They look like some sort of tamper proof heads. But this is the first time I came across these which look like a flower. I tried googling... but couldn't find anything on them. Does anybody who what these heads are called ?