Impreza GT F4-2.5L Turbo (2009)
4) While holding the torque converter clutch assembly by hand, carefully install it to the torque converter case. Take care not to damage the bushing.
Do not allow the oil pump shaft bushing to touch the stator shaft section of the oil pump cover inappropriately.
5) Slowly rotate the shaft by hand to engage the splines securely, then check that dimension A is within the specified range.
Dimension A:
Non-turbo model
1.1 - 1.3 mm (0.043 - 0.051 in)
Turbo model
2.7 - 2.9 mm (0.106 - 0.114 in)
6) Install the transmission assembly to the vehicle.