gs450h AC pump/compressor change. Big job?

[carnut1980]

Is this a big job, to change the AC pump? I have discovered the AC system is leaking from there.

I( can't quite tell if the cam chain drives the AC pump, or if its an auxillary drivebelt. Part no: 

0420000241

Are any special tools required, or has anyone attempted this job before?

cheers

[Hangie]

Hi i cant tell you how hard it is to change it but I can tell you it is neither aux belt or chain.

pump is electric and therefore driven by electricity. It means if there is enough space it should be to replace but it may be quite expensive part. Maybe it would be better to try and fix it ?

 

ps. There is quite a few on eBay from Lithuania and they under £200.

[Britprius]

17 hours ago, Hangie said:

Hi i cant tell you how hard it is to change it but I can tell you it is neither aux belt or chain.

pump is electric and therefore driven by electricity. It means if there is enough space it should be to replace but it may be quite expensive part. Maybe it would be better to try and fix it ?

 

ps. There is quite a few on eBay from Lithuania and they under £200.

The GS450H AC is electric because the car is a hybrid, and the engine is not always running to power the AC. This is fairly strait forward, but it is essential you remove the high voltage safety link on the HV Battery in the boot to remove any risk of electrocution. When refilling the system only ND11 oil can be used. PAG oil used in non hybrid systems will produce a code for a high voltage ground fault. Equipment that has been used with PAG oil should not be used even with the correct ND11 oil This will then require another pump, and a complete AC flush.

The GS430 is not a hybrid, and therefore the pump is driven by the engine probably by a serpentine belt. This makes it more difficult to get at. The system uses PAG oil on refill.

I give both systems because the OP's avatar says he has a GS430.

John.