Ideal Adjustment, Pretension: Notes

NOTE: Pretension can be checked with or without window cavity cover strip. Pretension is 1.0 mm greater with window cavity cover strip. Magnet in special tool, 51 0 341 creates the correct door window glass pretension on the seal system for measurement. No force must be exerted on the door or door window glass during measurement.

Insert special tool 51 0 341 in rotary striker of door lock and close rotary striker manually. Carefully close door.

Fig 1: Inserting Special Tool 51 0 341 In Rotary Striker Of Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.

Measure gap (A) between side window glass (1) and inside edge of door window glass (2).

NOTE: Measuring point 10 mm below top edge of window glass.

With window cavity cover strip fitted (front and rear):

A = 27 +1 mm

Without window cavity cover strip fitted (rear):

A = 26 +1 mm

Fig 2: Identifying Gap (A) Between Side Window Glass & Inside Edge Of Door Window Glass

Courtesy of BMW OF NORTH AMERICA, INC.