3b aircon pump details

[s2driveruk]

Guys,
I have been trawling about the net looking for details - thought I would create a single thread with details related to the 3b version(s) so if anyone else needs to find details they can

[s2driveruk]

Denso variant:

[s2driveruk]

Dimensions etc:

[s2driveruk]

Remanufactured unit (I think the number shown is for the Zexel unit) To be sure contact them and ask - but cost is good

http://www.compressortech.co.uk/down...audi_flyer.pdf

[s2driveruk]

Original PArt numbers:

Denso: 034 260 805D (Supplied on early 3b S2's)
Zexel: 8A0 260 805 (Supplied on the last 3b's/ABY - switch date seems to be 10.92)

These part numbers are for the R12 gas versions

[s2driveruk]

Refrigerant quantity
Denso unit running R12 requires 900g with a tolerance of +/- 50g
Zexel OR Denso unit running R134a requires 775g of R134a with a tolerance of +/- 25g

*Data supplied from Eurocarparts - treat as info only as cannot be confirmed

[S2central.net]

Good stuff david... I have some OFRM info from Audi on all the R134a systems which I can dig up. I have been meaning to create an entire section on aircon at s2central for phookin years now


Paul

[s2driveruk]

cool, only oposted it as it looks like my pump which sprang back into life a couple of months ago after a 4 year hibernation may be on its way out and i am sure if it stays this hot for the rest of the summer others will decide to give up...

[s2driveruk]

Denso UK contact details - will also give you contact details for their nearest approved repairer, inafct the guy at Autoclimate was very helpful - heres hoping its just a slipping v-belt rather than a new compressor

United Kingdom
Autoclimate ltd.
Battlefield Enterprise Park
Shrewsbury SY1 3TE
Russell Wellings (director)
United Kingdom
T: +44 (0)1743 445566
E: rwellings@autoclimate.com
W: www.autoclimate.com



DENSO Sales UK Ltd
Building 1, Eden Road, Walsgrave Triangle
Coventry CV2 2TB
United Kingdom
T: +44 24 76843416
F: +44 24 76842521
E: t.willetts@denso-sales.co.uk

[dan_b]

Good stuff, wish I had that information when I ordered up my replacement compressor last year - I got mine direct from Denso in the end, the R134a version of the 3B compressor as shown above.

[LHD_Kid]

Hi. I was reading this thread with interest. I have a LHD German car, with the Auto climate control digital version. Obviously originally R12, but one of the hose connections lead me to believe that it has been converted to R134a.
The interesting part is, that the original specs for quantity of refrigerant is 1050g +_ 20g
Does this sound too much?
The system doesnt work again, after a long period not working, regassing, then not working after a week or so...
Would I be best advised to get a R134a replacement pump (if the pump is the fault) and fill with the lower amount of refrigerant? or stay with the 1050g originally specified.
Presumably for one or more reasons due to extra piping or something, the auto system uses more gas....
Anyone have any ideas or advice?
Thanks
Chris

[dan_b]

The older R12 requires a different quanitity of refridgerant vs. R134a. Sounds like the chassis seal has gone on your pump, BTDT.

[GT500]

Great info, mine has started rumbling at a good few revs. sounds like the bearings have had it....
Just hope it lasts through the warm spell!

Rob

[dan_b]

The clutch mechanism can be replaced separately to the main compressor

[s2driveruk]

yeah that clutch is bloody expensive though, looked at mine pump last night as its squealing when the clutch engages. I've tightened the belt a bit as it was a little bit slack but no difference. The pump is covered in oil so its definately got a leak and though its cooling fine its deffinately not well. Does that sound like the clutch going?