ATF lines and ATF cooler, cleaning

WARNING: This page is about a different car, the 2010 Audi A8, 2009 Audi A8, 2008 Audi A8, 2007 Audi A8, and 2004 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Special tools, testers and auxiliary items required

Fig 1: Old Oil Collecting And Extracting Device V.A.G 1782

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Old oil collecting and extracting device V.A.G 1782
Compressed air gun, commercially available

NOTE:

Before installing a replacement transmission, clean ATF cooler and ATF lines. If extremely dirty ATF flows out when blowing with compressed air, ATF cooler and ATF lines must also be flushed with clean ATF.
Rules of cleanliness for working on automatic transmissions → Rules of cleanliness for working on automatic transmissions .
Carefully clean all joints and adjacent areas before disconnecting.
When installing ATF lines, insert them by hand completely into transmission or ATF cooler as far as stop and then tighten.

Work procedure

Place used oil collection and extraction device V.A.G 1782 under separating point.

Fig 2: ATF Lines & Bolt

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolt - 2 -.
Push hose onto ATF line - A - and fasten with hose clamp. Hang other end of hose in oil collecting container.

CAUTION: Wear eye protection.

Blow through ATF line - B - with a compressed air gun (with max. 10 bar).
Change hose from ATF line - A - to ATF line - B - and repeat procedure.
Re-secure ATF lines.
Check ATF level in planetary gearing → ATF level, checking and topping off .