Self-Study Program

15
Note
When installing the torque converter and
before installing the gearbox, special care
must be taken to ensure that the ATF pump
drivers engage correctly into the grooves on
the torque converter hub. This can be checked
by measuring the installed position of the
torque converter (refer to the Workshop
Manual).
Note
Always make sure that the fitting bushes are
installed correctly between the engine and the
gearbox. Missing fitting bushes will result in
irreparable damage to the roller bearing, the
torque converter hub and the shaft oil seal due
to offset between the engine and the gearbox.
367_053
367_074
367_094
Pinion
Ring gear
Converter housing
It is directly driven by the engine (at engine speed)
via the converter housing and the converter hub.
Two driver grooves on the torque converter hub
engage the pinion drivers. The torque converter hub
runs on low-friction bearings in the pump housing.
Torque converter hub
One of the key components of an automatic
gearbox is the ATF pump.
The gearbox cannot function properly without a
sufficient supply of oil.
The ATF pump is designed as an internal gear pump
(duocentric pump).
Ring gear
Pinion
Driver
Roller bearing
ATF pump housing
Stator shaft
Thrust plate