Ideal setting, preload

NOTE: Pre-tension can be checked with or without weather strip. Pre-tension is 1.0 mm less with weather strip.

Insert the special tool 51 0 370 in the rotary striker of the door lock and close the rotary striker manually (activation of the short stroke).

Close the door carefully up to the point where the special tool 51 0 370 magnetically adheres to the striker (= defined door opening angle for measurement).

No force must be exerted on the door or door window glass during measurement.

Fig 1: Inserting Special Tool (51 0 370) In Rotary Striker Of Door Lock

Courtesy of BMW OF NORTH AMERICA, INC.

Slide the special tool 51 0 342 at a distance (B) to the door window glass side edge into the seal (up to the body flange stop) and measure dimension (A) to the outside edge of the door window glass (2).

Dimension (A) with weather strip:

A = 65 ±1 mm

Dimension (A) without weather strip:

= 66 ±1 mm
= 10 mm

Fig 2: Sliding Special Tool (51 0 342) At Door Window Glass Side Edge
Courtesy of BMW OF NORTH AMERICA, INC.