Detroit Thermo tool for clutchless Denso 7SEU and 6SEU compressors on German OEM vehicles

This video demonstrates how to use a Detroit Thermo 3 pin tool to remove the compressor drive hubs on a Denso Clutchless compressors used on German cars before 2013

The puller shown is widely available on Amazon and eBay, search for Ribbed Pulley Puller

[pk-clips]

Great tool and video!

I’ve recently got to know these compressors due to issues with my AC on an Audi S3.

1. Mine had a groaning noise coming through into the interior, still cold and no noise in the engine bay.
- evacuated and recharged.. resolved!

2. A few months later (on a stinking hot day) the aluminium safety hub sheered off. Don’t know why.
- I bought a 2nd hand denso compressor cheap and used it’s sheer hub. Actually changed it in situ by putting a socket on the central nut, and rotating the remains of the aluminium off. Didn’t need to discharge/recharge or remove the compressor. It was fiddly but doable.

The garage wanted $1800 (new compressor etc) I did this fix for $100, knowing that it might well have to have the full fix anyway.

6 months later it is still running perfectly.
My question is, if the compressor hasn’t seized, why would the aluminium sheer hub give way?
(It is a powerful car ~200kw).

[phillippardo]

Hey thanks for the video! I'm curious if a bad bearing could cause heavy knocking from the compressor when the ac button is engaged?

[ZaphodsPlanet]

Thanks for the video. I have a question for you though. Do you know what the symptoms are when this bearing starts to go? My AC is still blasting pretty cold but I stopped using it since it seems to cause a kind of uneven idle when stopped at a light and the A/C is on. Also when I cold start the car I get a kind of short clacking noise not long after starting, this is on an 07 Benz ML350... I'm guessing whatever computer controls this just tries the compressor regardless of saying to leave it off on the climate control. When I recently replaced the serpentine belt I rotated the compressor by hand and it seemed to move okay but it was kind of sticky... or felt like it was hanging up the first couple rotations... almost like there was dirt in the back of the pully. I am just trying to determine if I can get away with replacing this pulley and bearing, or if I need to bite the bullet and get a whole new compressor. Thanks for your help if you have any ideas.

[felixalbano]

hello sir could you give me the reference of the tool to unscrew the air conditioning pulley thank you sir