replacing AC compressor on 190E

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mharness - 30 Jan 2005 10:33 GMT

Hello,

I'm replacing the AC compressor, receiver-drier, and expansion valve on my
190E but will be having a mechanic recharge the freon.

Can I drive the car to the shop before the system is recharged? Also,
should I hook up all the lines or will the mechanic need to blow out the
lines or do something else before that's done?

I have never replaced a compressor before so a heads up on any "gotchas"
would be appreciated.

Thanks,

Mike

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Peter W Peternouschek - 30 Jan 2005 15:12 GMT

The system should be flushed to clean out any left over junk from the failed
compressor. If you do not do a thorough cleaning the new compressor will
fail very quickly. I would install the compressor but not hook up the lines.
Also cap any open fittings to prevent further contamination. You can also
install a filter to trap any residual contamination that the flush may not
get rid of.
You should be OK driving it to the mechanic as long you don't turn on the AC
or the defroster.

Peter

> Hello,
>
[quoted text clipped - 11 lines]
>
> Mike

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Karl - 30 Jan 2005 16:34 GMT

You can drive that car til the cows jump over the moon with the A/C turned on. That compressor will
never run with the system empty. The pressure switch on the drier will not close and send a ground
signal to the Klima relay to engage the compressor clutch. No pressure = no clutch.

> The system should be flushed to clean out any left over junk from the failed
> compressor. If you do not do a thorough cleaning the new compressor will
[quoted text clipped - 22 lines]
> >
> > Mike

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