Hi all
I want real A/C this summer. I've been poking around some threads, several of which are a bit older at this point and figured I'd start one to pool knowledge.
This thread comes up often on searches: https://www.r3vlimited.com/board/sho...d.php?t=246743
Does anyone have a current shopping list or experience to share?
Mine is an '89 325i Sedan which the previous owner "converted" to R134a by changing the port and flushing. It doesn't hold a charge. Compressor is leaking some (did a UV dye test). Time to do it right.
I haven't done it yet, but I've done extensive research, here's my raw notes dump. There is a mix here of new stuff, as well as some compressor repair/rebuild info. My plan is to buy everything from rockauto.
http://www.r3vlimited.com/board/showthread.php?t=246743
Rock Auto Parts
Compressor, dryer and pressure switch
$265
http://www.rockauto.com/en/moreinfo....011700&jsn=387
Condensor
$106
http://www.rockauto.com/en/moreinfo....sn=381&jsn=381
FOUR SEASONS 59976 R
-12 TO R-134a RETROFIT KITS AND FITTINGS - LOW SIDE
FOUR SEASONS 59978
R-12 TO R-134a RETROFIT KITS AND FITTINGS - HI SIDE
FOUR SEASONS 26773 AC System Seal Kit
FOUR SEASONS TSR0911 Tech Select A/C Kit Reman
http://www.compressor-intl.com/index.html
http://www.thecompressorwarehouse.com/results.cfm
http://www.techchoiceparts.com/inventory
https://www.youtube.com/watch?v=MangGmPZc6g
https://www.youtube.com/watch?v=Zn9N5sypuME
https://www.youtube.com/watch?v=sh-KIjAqh-A
pull vacuum before replacing all o rings
flush system
compressor repair parts
http://max-ac.com/10P15E_c_22506.html
The compressor gasket set contains mostly o-rings: 1) three large o-rings for resealing the case sections, 2) four small o-rings for resealing the suction and discharge fittings - where the shraeder (sp?) valves are located (you know, like the valves on a bicycle tire/inner tube), 3) one small o-ring for the shaft seal seat (a duplicate for the one in the shaft seal kit), and 4) five washers to use with the head bolts (again, duplicates for the ones in the shaft seal kit).
compressor diagram
http://www.acsource.com/10p13c10p15c...breakdown.aspx
repair diy
http://www.pelicanparts.com/techarti...so_rebuild.htm
http://members.rennlist.com/elsies91...nsorebuild.htm
system picture
http://s115.photobucket.com/user/bea...nes-1.jpg.html
refrigerant
http://www.harborfreight.com/18-oz-a...uge-97275.html
http://www.realoem.com/bmw/enUS/part...BMW-325i&mg=64
64521386256
10P15E
Denso
o rings
http://www.r3vlimited.com/board/show...5&postcount=11
oil viscosity
https://docs.google.com/file/d/0B6qM...t?pref=2&pli=1
http://www.rockauto.com/en/moreinfo....011700&jsn=368
http://www.techchoiceparts.com/inven...-ac-compressor
http://www.e30tech.com/forum/showthread.php?t=113435
http://www.exx.se/techinfo/docs/r134a_retrofit.pdf
http://www.compressorsoftheworld.com...ompressors.php
NipponDenso 10p15e compressor $30
Vapor hose from firewall to compressor w/ 5/8" tube fitting $10
Buy the following new:
Receiver-drier $20
O-rings all around $3
R134a expansion valve $20
Compressor-to-condenser barrier hose $30
Drain the oil from the compressor and rinse with mineral spirits.
If you have an air compressor, flush some mineral spirits or other evaporating cleaner through each hose individually.
Last edited by sienayr; 03-13-2018 at 04:50 PM.
I plan on taking this on next month. I have a lot of the parts. I had a local shop covert all the rubber hoses to R134 compliant. I have cleaned all the hoses but will do it one more time before installation. I'm still deciding on the compressor. Then I need to source a vacuum pump and charge hoses. Not sure if I want to buy or borrow (I like my own tools). But not knowing if I'll ever use them again has me reconsidering.
2004 525i Sport, Manual - 1985 325E Coupe Manual
Can you post up some helpful tips on this thread when you are done, such as any special tools or anything to watch for as you complete yours?
I am subscribed to this thread because this is something that I think I may want to do soon as well.
Sent from my SM-N920P using Tapatalk
When you say 'convert' the hoses what does this mean - recreate or...?
You can get a vacuum pump kit with hoses and gages on ebay for around 100 or 130 bucks. I bought one last summer and its worth having. I used alcohol to clean the system on my son's 86 and we opened the compressor, just to clean it, and it was full of little rock looking chunks. We cleaned it out with alcohol, also, and assembled the whole system back onto the car, vacuumed and filled it, and now the ac blows at 54. Its freaking cold and i turn it to low when i drive because its so cold.
It was not hard at all. Just time consuming to clean everything, and the vacuuming takes time
Does anybody know which new compressor is a direct replacement for my nippondenso 10P15E? I suppose I could rebuilt it (it leaks per UV test) but starting with a new, r134 compatible unit seems worth it.
Image1524434053.259180.jpg
I don't know. I need to find out because my other son's car has a dead compressor. we took it apart and its not coming back so I need another one.
No e30s again.
Getting started on this and ordered condenser, dryer, switch and expansion valve, hopefully all correct to R134a - they are to the best of my knowledge.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Griffiths says there are two types of nose seals on my Nippondenso so I'll pull and dismantle before ordering the rebuild kit.
https://griffiths.com/product/porsch...0p15-seal-kit/
There are three youtube links in my first post in this thread, they cover replacing seals, bearings and clutch on a Denso compressor, not a 10P15E but close enough to be helpful.
I watched them and they are sweet relief from all the "whats up youtube" dudes taking the scenic route. I'll buy parts from him as a thank-you.
Project ac begins.
Image1524942730.210842.jpgImage1524942741.793569.jpg
Image1524942751.706195.jpg
Cool
No e30s again.
Does anybody have a tip about removing the outer plate of the clutch? The 12 mm bolt is off but it does not want to budge. From what I read a gear puller or similar is not supposed to be required
Image1525180182.170907.jpg
not here. I have not had to go that far, yet
No e30s again.
Using chisels as wedges broke it loose, it was evidently seized on the shaft.
Still needed a puller once I could work the arms around the back of the plate.
Rest is easy, remove circlip, remove coil, remove circlip, remove nose piece.
more
The reason why there are so many problems with belt tension. Replacement part surprisingly reasonable.
Image1525226910.658886.jpg
This hasn't been mentioned yet. You should use ester oil. PAG oil becomes corrosive once it contacts residual mineral oil from when the system ran R12. Ester oil does not do this and is compatible with nearly all other oils and refrigerants. I am running hc12 in my e21 and get vent temps around 45-48 Fahrenheit when moving. The only changes I made to the system were a e30 rotary compressor and new o rings.
Thanks for bringing this up. I did some reading and concur - and was able to intercept my recent compressor parts / o ring / oil order in time to change it. FYI I bought from these guys who have been very helpful.
https://www.google.com/url?hl=en&q=h...Dsd0jtvm-MGSBw
good info
No e30s again.
Starting to question if I did some damage to the clutch plate when prying it off. I realize now there is a dedicated tool for this job and that the plate has outer threads. To my knowledge the plate is not available as a replacement part. Has anyone had good experiences with an ebay or Four Seasons remanufactured Denso 10p15E?
I have not tried them
No e30s again.
New receiver dryer is confusing me a bit. It was sold along with the new high pressure switch, but has no threading to accept the high pressure switch as the original unit did. I understand the low pressure switch can be omitted but I'm confused by the the high pressure issue.
doh! the HP switch threads onto the Schrader valve. Okay carrying on...
This vid explains it: https://www.youtube.com/watch?v=nQi3mI9_aEU
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