Audi A4 Cabriolet Workshop Service and Repair Manuals

Removing and installing ATF pump in housing of ATF supply unit

Removing l  ATF supply unit removed. –  Turn ATF supply unit upside down. –  Remove circlip -1- and remove set of plates -2- from cylinder “C”.

–  Press dished spring down using workshop press with mounting bracket -T10289-. –  Remove split retaining ring -1-. –  Release workshop press.

–  Detach dished spring -5-.

WARNING Wear safety goggles. –  Carefully press piston “C” out of ATF supply unit by applying compressed air.

–  Remove bolts -3 … 10-. –  Unscrew bolts -1- and -2- approx. 5 turns.

–  Apply TORX key with extension -1- to bolt head as illustrated. –  Loosen the ATF supply unit by gently tapping the two bolts alternately with a plastic-headed hammer -arrow-. –  Unscrew remaining two bolts. –  Detach housing of ATF supply unit.

–  Remove intermediate plate -5- and locating sleeve -6-. –  Remove ATF pump gears -3- and -4- from ATF pump housing -2-. 1 -  O-ring Installing   Caution Before assembly, check the individual components of the ATF pump for traces of wear and damage → Chapter. –  Renew O-ring -1- on ATF pump housing. –  Insert ATF pump gears -3- and -4- into ATF pump housing -2-. l  The dots marked on the ATF pump gears face the intermediate plate -5-. –  Fit intermediate plate and insert locating sleeve -6-. l  The locating sleeve engages into the rectangular opening on the intermediate plate

–  Screw guide pins -T10288/4- into the two opposite bores in housing of ATF supply unit.

–  Fit housing of ATF supply unit onto ATF pump. –  Tighten bolts on ATF pump in two stages as follows:

Step	Tightening sequence
I	–  Tighten bolts to 5 Nm in sequence -1 ... 10-.
II	–  Tighten bolts to 10 Nm in sequence -1 ... 10-.

–  Renew O-rings -2- and -4- for piston “C”-item 3-. –  Insert piston “C”-item 3- into ATF supply unit -item 1- as far as stop. –  Fit dished spring -5-. 6 -  Split retaining ring

–  Press dished spring down using workshop press with mounting bracket -T10289-. –  Insert split retaining ring -1-. l  Collar of split retaining ring faces downwards. –  Release workshop press.

–  Insert corrugated spring -2- into cylinder “C”-item 1-. –  Fit outer plates -3- and friction plates -4- alternately. –  Insert thick outer plate -5-.   Note Make sure that the rounded edges of the thick outer plate face friction plate -4- and not circlip -6-. The contact surface for the circlip is thus increased. –  Insert circlip -6-.   Note The clutch clearance must be re-adjusted → Anchor if the set of plates for clutch “C” has been renewed.