Ac compressor repair.

[Dwilson540]

I’m going to replace the compressor on my Kubota L4200. I just learned that I can borrow the gauges at O’Reilly. Looks like I just bleed off the Freon to reduce the pressure in the lines. Then reduce the tension on the belt. Remove and replace the compressor. Recharge with Freon. I’m guessing the compressor will have information as to the psi required. Any information that will make this less complicated would be appreciated. Thanks.

 

[Eagle1]

Once you open the system you really should run a vacuum to remove any moisture and check for leaks.
After a compressor replacement I would add some compressor oil back into the system, how much depends on if the compressor is oiled before installation or used, etc.
Normally refrigerant is added by weight not pressure. Your compressor will generate the pressure on the high side and the low side pressure should be enough to ensure the system is full and that the expansion valve is working properly.
Details vary between systems.
Not a hard job and all the tools will cost less than paying a shop, any future uses is a bonus.

 

[Harry in Ky]

There's more to servicing A/C systems than the "nuts and bolts" then adding freon. Why does the compressor need to be replaced?

 

[thclimer]

There are specific details for the required vacuum to be pulled and for how long it has to be held. If you don't do it correctly there will be moisture in the system which will probably mess up the small port of your expansion valve. Do not skip this step.

 

[Tinhack]

Looks like I just bleed off the Freon to reduce the pressure in the lines.

That would be a $10,000 fine.

As @Harry in Ky states, why are you replacing the compressor? You could be ruining that one too. If something came apart and the system is contaminated, you'll just waste the new compressor.