My old AC line relocation kit was leaking. I suspected a bad O ring and took it off. Right after that I scored a cylinder wall and had to rebuild the motor. That was 2 years ago.I just recently put the motor back together again

It's getting hot again and I'd like to reinstall the new AC lines. Do I need to replace anything before hooking up the lines and recharging? A new Drier? anything?

 

Personally I would flush out the evaperator and condensor, replace the dryer and expansion block,and drain any oil from the compressor. Then refill with new, clean oil, vaccum and recharge. You can probably just get buy with a vaccum and recharge, but I wouldn't chance it. Compressors are expensive. Normally when you cut corners with AC it tends to bite you in the ass. I spend a LOT of time every summer rebuilding auto air conditioners, so I tend to want to eliminate any problems before they arise. The dryer and expansion block are very inexpensive, and you can pick up a gallon of flush and some pag oil anywhere.

 

New O-rings and seals where possible too, since the oil circulating through the system helps keep them from drying out.

 

Great advice, thanks guys!

 

Did you seal the compressor from the elements?

If the compressor was left unprotected there is a high chance all the seals are gone. Compressor may be toast.

 

Crap, not really sealed. Just a plastic bag and rubber band just to keep dirt out.

How will I know that the compressor is bad?

 

You'll know because the AC system wont stay pressurized. Typically the seals in the compressors dry out when unit isn't run very often and/or disconnected. The seals are lubed every time the unit is run. As there is oil in the fluid of the system.


No harm in trying to see if it works. If it does, great!

 

I'll give it a try and will report back my results in a few weeks when I get it done!


Thanks again for everyone's suggestions and advice.



- Paul