Adjusting Pretension
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 135i, and 2010 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.
Slacken nut (3) with reversing ratchet (2) of special tool 51 3 300 (consisting of 51 3 301 , 51 3 303 and 51 3 304 ).
Turn the knob (1) on the special tool 51 3 300 to turn the stud (4) and thereby alter the pretension.
Tighten nut (3).
Tightening torque, see 51 33 1AZ in 51 33 POWER WINDOWS, FRONT .
Check adjustment, repeat procedure if necessary.
NOTE:
After completing adjustment work, it is essential to initialize
the power window unit.
Checking run-in of door window glass:
Door window glass must strike the inside of the seal.
Check adjustment of rear side window , adjusting if necessary.