-
Prevost otr air oil change
,can someone tell me the oil capacity for the carrier 05g Ac compressor?
where is the fill location?
Thanks.
Dick
-
10 Replies
-
Dick, I can’t tell you the capacity, but you should have a sight glass on the side that will show the correct level.
If you are changing from R12 to 134A and need to purge the entire system, go to the Prevost publications page accessed via the commercial side of their website and go to a later year that has service manuals available such as 97 and see what they call for in termos of amount. That likely considers not only what it takes to bring the compressor to the correct level, but it also likely compensates for what ends up in the rest of the system once you start running.
-
Dick, The capacity is 103 oz. or at least that is what the manufacturer says. I bought a gallon (128 oz.) from Covington truck parts for $910. Had to funnel it from the gallon jug into a squeeze bottle then into the compressor. A very slow go. Took about 45 minutes. I have a pdf about the O5G I will send to you if you want it. The oil fill is down on the engine side of the compressor. Have to take the schrader valve out to fill. MT
-
Thanks for that information Mike. I’m going to go head and switch to 134 as well.
I just replaced the both crossover hoses as one of them had developed a leak.not an easy task to remove the heater core and evaporator assembly along with the blowers on the driver side.
do you plan on adjusting the expansion valve or just letting it alone? I may tinker with it since I have access to it now.
I figure if I lose a little efficiency it won’t make too much difference with only two people being inside,instead of 50 or so, in a commercial bus situation.I drained the old compressor oil, but it only had about one half gallon of oil in it. My site windows are dirty I don’t know if I can see the oil level, or not. I will have to pick up some more Polyol ester oil to finish filling the compressor.
Dick
-
I think I am going to leave the exspanion valve adjustment alone for now. I did switch to R134a. I will keep you posted on the out come as soon as I get everything finished and running. Sounds like you are on the right track. I know you will be happy when you get it going as well will I. I will send the O5G pdf to your gmail … if that’s ok? Maybe that will help with some information. MT
-
You are suppose to change the hoses, 134a can leak through the hoses, but I have seen cars get by with it
-
vac down system 27 lbs per book thru 1999. got your message Dick. MCI 8 tin tent has been running his 134 with no mods for more than 7 yrs. Bob
-
We do alot of work on the Carrier and like compressors in the HVAC business. This pump is the correct way. If you don’t want to invest the $880 I am sure you could borrow one from one of your HVAC friends. It fits right into the gallon jug.
-
The kit to change the hoses is about $6000 from Prevost. The previous owner of my bus only changed a couple of hoses. In a year and a half, my freon has not leaked. Not saying it won’t. But my bus freezes everyone out. So far so good.
On the sight glass… I was concerned because I didn’t see any indication of fluid in the sight glass. The shop told me that it only shows when the system is on. Again, I don’t know of that is correct, but my system works great.
-
I think a guy could buy a lot of 134a and a set of gauges for $60000
-
Your link didn’t show Cliff – Tom
Log in to reply.