Has anyone changed their AC expansion valve?

General Chat about the Mk1 QashQai
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plinth
Posts: 2
Joined: Fri Jun 24, 2022 12:22 pm
Qashqai Model: Mk.1 Qashqai - J10 (2006–2013)

Post by plinth »

Is this the kind of job that could be taken on by a competent DIY level home mechanic? Or is it more of a specialist job?

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calnorth
Posts: 2719
Joined: Mon Feb 11, 2019 2:01 pm
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by calnorth »

plinth wrote: Sat Jul 16, 2022 11:17 am Is this the kind of job that could be taken on by a competent DIY level home mechanic? Or is it more of a specialist job?
I don't think its a DIY level job because you'll need to know the procedure to de-gas and store the refrigerant. Plus replacing the Expansion Valve, re-gassing to the correct high and low side pressures..using gas gauges. Replacing seals and adding special oil on on the way.

The amount of refrigerant to be installed is subject to weight measurement.

It is against the law to dump aircon refrigerant into the air.

Getting this wrong could damage the compressor.
Mk2 Qashqai Facelift - J11b (2017–and onward)
1.6 Dig-T N-Connecta
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