Air conditioning Gen 1 LS400
08-06-16, 09:58 AM
#1
Lead Lap
Thread Starter
Air conditioning Gen 1 LS400
conversion TSB: AC001-98
R12 to R134a AC Retrofit form Lexus .pdf
I found the above technical service bulletin in this thread.
https://www.clublexus.com/forums/ls-...s-400-a-c.html
The TSB says to use ND Oil 8, so spent some time yesterday online hunting for where to get it no luck. So I call my local Lexus dealer service department and ask, they say that they no longer do the conversion because the oil is no longer available, and he said that makes the conversion cost very high due to all the parts that need to be replaced.
In my search I found this site.
http://www.denso-am.eu/media/647317/...-a2_uk-web.pdf
It says ND Oil 8 is equivalent to PAG 46, but will it work the same as ND Oil 8 does in the conversion? I don't know.
Then I find this so I wonder if this is truly what it says it is?
https://www.moparrepairconnection.com/chemical/action/guide/en_US/AIR+CONDITIONING/82300102AC/
Oh and there was no mention of anyother TSB's on a conversion, I suppose they are thinking since the cars are so old and the cost of conversion is as high as or more than the car is worth they just don't bother.
R12 to R134a AC Retrofit form Lexus .pdf
I found the above technical service bulletin in this thread.
https://www.clublexus.com/forums/ls-...s-400-a-c.html
The TSB says to use ND Oil 8, so spent some time yesterday online hunting for where to get it no luck. So I call my local Lexus dealer service department and ask, they say that they no longer do the conversion because the oil is no longer available, and he said that makes the conversion cost very high due to all the parts that need to be replaced.
In my search I found this site.
http://www.denso-am.eu/media/647317/...-a2_uk-web.pdf
It says ND Oil 8 is equivalent to PAG 46, but will it work the same as ND Oil 8 does in the conversion? I don't know.
Then I find this so I wonder if this is truly what it says it is?
https://www.moparrepairconnection.com/chemical/action/guide/en_US/AIR+CONDITIONING/82300102AC/
Oh and there was no mention of anyother TSB's on a conversion, I suppose they are thinking since the cars are so old and the cost of conversion is as high as or more than the car is worth they just don't bother.
08-06-16, 12:30 PM
#2
Lead Lap
Thread Starter
Good news and some bad news too. 250 mL round can of ND-Oil 8 from Mopar dealer (that's the good news) $59.90 and of course 5.69 sales tax (that's all the bad news)
I suppose this is why most all r134a retrofits never last, no one is using the correct oil, that's mentioned in the TSB.
I suppose this is why most all r134a retrofits never last, no one is using the correct oil, that's mentioned in the TSB.
08-06-16, 09:16 PM
#3
Rookie
Join Date: Mar 2016
Location: TAS
Posts: 55
Likes: 0
Received 0 Likes
on
0 Posts
Im going to have to do this at some stage. There is enough r12 still in the system to run the compressor but not enough to actually cool.
Realisically the cost shouldnt be overly high, replace the oil, get adaptor fittings for the HP + LP lines, replace all the o-rings and the drier and you should be good to go, providing the system is otherwise in good order.
In Australia, flurocarbons are pretty heavily regulated. Ive seen you guys in the states to be able to DIY service systems and even buy R12! Ive got my A/c ticket but ive had very little to do with retrofitting/converting as most cars that are old enough that they use r12 are sub $1000 ****ters anyway so people dont spend the money.
Realisically the cost shouldnt be overly high, replace the oil, get adaptor fittings for the HP + LP lines, replace all the o-rings and the drier and you should be good to go, providing the system is otherwise in good order.
In Australia, flurocarbons are pretty heavily regulated. Ive seen you guys in the states to be able to DIY service systems and even buy R12! Ive got my A/c ticket but ive had very little to do with retrofitting/converting as most cars that are old enough that they use r12 are sub $1000 ****ters anyway so people dont spend the money.
08-07-16, 02:32 AM
#5
Lead Lap
Thread Starter
Top left picture shows high pressure port, there are 2 of them the other is under the airfilter the fan is the one on the right side of car.
Top center picture shows 1 of 2 sight glasses, the other is on the receiver drier.
Top right picture shows low pressure port near fire wall on the right side under wire loom that goes into the passenger compartment.
Bottom left shows right side head light assembly taken out and the receiver drier and the sight glass.
Center bottom shows the high pressure fitting under the airfilter, its the pipe to the bottom.
Top center picture shows 1 of 2 sight glasses, the other is on the receiver drier.
Top right picture shows low pressure port near fire wall on the right side under wire loom that goes into the passenger compartment.
Bottom left shows right side head light assembly taken out and the receiver drier and the sight glass.
Center bottom shows the high pressure fitting under the airfilter, its the pipe to the bottom.
Last edited by dicer; 08-07-16 at 06:54 PM. Reason: Added another picture
08-07-16, 04:05 AM
#6
Rookie
Join Date: Mar 2016
Location: TAS
Posts: 55
Likes: 0
Received 0 Likes
on
0 Posts
I cant recall seeing multiple sight glasses or multiple high pressure ports on a car before. I also noted i have lines running to the rear of the car into the trunk where the rear a/c used to be (i have a CF celsior, dont think LS had this option?). I havent really payed any attention as to where they are in the system up in the engine bay. I maybe able to delete them completely.
Trending Topics
08-07-16, 11:29 AM
#10
Lead Lap
Thread Starter
The system on this car was empty, still up in the air what I'm going to do to find the leak. Even if it could be recharged with R12 a person would want all new orings and all new anything else that could possibly leak, its just too expensive to not make sure there are zero leaks. And never would you want to use dye and R12 total waste.
08-07-16, 11:30 AM
#11
Lead Lap
Thread Starter
08-07-16, 12:29 PM
#13
Thank you for the very detailed information, Dicer!
EDIT: Nevermind my initial question in this post. I can see the bolt in one of your photos.
EDIT: Nevermind my initial question in this post. I can see the bolt in one of your photos.
Last edited by CELSI0R; 08-07-16 at 12:34 PM.
08-07-16, 12:29 PM
#14
Lead Lap
Thread Starter
https://macsworldwide.wordpress.com/...bricant-types/
Last edited by dicer; 08-07-16 at 12:36 PM.