Mondeo AC compressor

[PeterT71]

I need to replace the AC compressor on my MC Mondeo TDCI. I was quoted $1300 to replace it. After watching a few YT videos it seems like its a simple and easy job to replace. I have subsquently sourced a second-hand AC compressor from a wrecked Mondeo which I'll install once the system is degassed. Does anyone know how much oil I need to put in the compressor prior to installing and or have any other relevant info I may need to know? Thanks.

[Citroënbender]

If you have the means, consider power flushing the entire system, and put in the total volume of oil.

Unless you’re quick in your works, you may need to replace the drier cartridge as well.

[swamp]

hi
But why are u replacing the compressor ??
Compressors rarely fail by themselves .
Clutch worm out
clutch pulley bearing
compressor seized due to internal failure
refrigerant leaks also leak compressor oil
overcharging can cause compressor oil burning
undercharging causes reduces flow of oil
evaporator dirty causing compressor liquid flooding [compressors cannot pump liquid]

Always Always change receiver drier /desiccant bag , Often these dont get changed. [A moisture free system is a healthy system ].

Why did the compressor fail ???
Compressor Internal failure debris blocks condenser micro channel pathways . Condensers need replacement in that situation .

Its aways best to remove evaporator to flush internally and clean externally

Remember to oil balance compressor if not flushing system .
If system flushing no oil balance required .

When evacuating [using a vacuum pump ] the automotive industry NEVER ever uses a micron gauge .
A system needs to be on vacuum pump for 2-4 hours generally do. Heavily contaminated system 12 hours plus .
The only way to tell is with a micron gauge .

Excessive Moisture causes poor performance of A/C
Excessive moisture creates leaks .
Excessive moisture creates corrosion internally

[PeterT71]

Originally Posted by swamp

hi
But why are u replacing the compressor ??
Compressors rarely fail by themselves .
Clutch worm out
clutch pulley bearing
compressor seized due to internal failure
refrigerant leaks also leak compressor oil
overcharging can cause compressor oil burning
undercharging causes reduces flow of oil
evaporator dirty causing compressor liquid flooding [compressors cannot pump liquid]

Always Always change receiver drier /desiccant bag , Often these dont get changed. [A moisture free system is a healthy system ].

Why did the compressor fail ???
Compressor Internal failure debris blocks condenser micro channel pathways . Condensers need replacement in that situation .

Its aways best to remove evaporator to flush internally and clean externally

Remember to oil balance compressor if not flushing system .
If system flushing no oil balance required .

When evacuating [using a vacuum pump ] the automotive industry NEVER ever uses a micron gauge .
A system needs to be on vacuum pump for 2-4 hours generally do. Heavily contaminated system 12 hours plus .
The only way to tell is with a micron gauge .

Excessive Moisture causes poor performance of A/C
Excessive moisture creates leaks .
Excessive moisture creates corrosion internally

Thanks Swamp for the excellent and very detailed reply, I appreciate it. I'm not sure why I was quoted (AU $869) for a new compressor? All he said was that it was leaking badly?? I honestly have no idea why it failed apart from lack of servicing on my behalf. From what your'e saying it might not be as simple fix as I thought. I'm sure if I take it to the professionals no one's going to want to stuff around with a second hand compressor. Cheers Swamp.

[PeterT71]

Originally Posted by Citroënbender

If you have the means, consider power flushing the entire system, and put in the total volume of oil.

Unless you’re quick in your works, you may need to replace the drier cartridge as well.

Thanks for replying Citroenbender.

Is there much involved with replacing the drier cartridge on a Mondeo? There was no mention of replacing the receiver/drier in the original quote.