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Pump Query

mz on Thu October 30, 2008 7:48 AM User is offline

Model: M3
Engine Size: 3201
Country of Origin: United Kingdom

This pump was taken from a slavage car and has been found to be leaking between the front cover and main body as displayed.
Is this repairable?

Edited: Thu October 30, 2008 at 7:49 AM by mz

JACK ADAMS on Thu October 30, 2008 11:03 AM User is offline

Can you give us a year of the car as well as a model number of the compressor? The more info you can provide will help..

dasinc on Thu October 30, 2008 11:40 AM User is offlineView users profile

It appears to be a Nippondenso 10PA17C compressor. You can verify that by looking at the Denso label on the rear of the compressor. Gasket kits are available, but just as a warning, when you take the bolts out to remove the front head you should replace the gaskets at all sections of the body or you may have leaks at those seams as well.

Take care,


[email protected]

iceman2555 on Thu October 30, 2008 4:34 PM User is offlineView users profile

Just from the photos...the leak is more than likely from the front seal. Denso's seal very well and this is not a common area of leakage. The dye location could simply be migration of the dye/oil from air flow over the compressor.
Also the clutch seems to have been subjected to possible excessive heat issues. The amount of rust and location tend to mirror past examples of excessive clutch slippage/heat. This could be the result of low refrigerant/lubricant migration. This may result in a 'binding' action within the compressor body. Prior to spending the time and money to purchase parts and tear down the compressor...why not remove the clutch and post photos of the clutch drive, pulley and pulley bearing areas. If the compressor was operated without sufficient lube it may already be past the point of resurrection.
Good luck.

The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

Chick on Thu October 30, 2008 9:33 PM User is offlineView users profile

It's a Denso 10pa17c and you can get one from the sponsor of this site, most likely without the clutch if you's is still good. Just change the clutch and the manifold on top, and you can use any 10pa17c.. provided you get one with the bolt holes in the configuration I call long nose, as some have the bolt holes right against the manifold lines.. In otherwords, I can take one off a dodge caravan, change the clutch and manifold (Coils are usually different plugs so use your old coil if it's OK) and put it on a mercedes benz..
Send an e-mail to [email protected] refer to this post and they can hook you up with a compressor without a clutch..All new and reman compressors come without the manifold anyway, so you'd have to use yours. (where the lines hook up) Hope this helps

Email: Chick


Freedoms just another word for nothing left to lose

mz on Wed November 05, 2008 8:17 AM User is offline

Hi, well finally pulled the pump apart and found some corrosion that was leading to a poor seal on the main bodies o rings. New ones have been ordered so will be fitted tomorrow. Many thanks to all that helped.
P.s., can anyone advise on the torque settings for the re-build?

mz on Wed November 05, 2008 4:47 PM User is offline

For reference I torqued these to 20lbs-ft.

Edited: Mon November 10, 2008 at 10:57 AM by mz

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