51 16 992 Disassembling and assembling lock barrel (lock barrel removed)

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work:

If necessary, remove LOCK BARREL .

Sort supplied retainers (1) according to graphic.

(X) Embossed number on retainer (1)

(Y) Installation position in lock barrel

Fig 1: Identifying Retainers With Numerical Sequence

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Insert spring (1) into first position of lock barrel (2).

NOTE: Lock barrel version (2) differs according to vehicle.

Fig 2: Identifying Spring And Barrel Version

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Insert retainer (1) with lowest embossed number (X) of first position (Y) in lock barrel (2) and engage audibly.

NOTE: Number of retainers (1) differs according to vehicle.

Fig 3: Identifying Retainer And Lock Barrel

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Insert ignition key (1) in lock barrel (3) and check whether retainer (2) is flush with housing.

OK
not OK

Fig 4: Checking Retainer Flush
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If retainer (2) is not OK, press retainer (2) out of lock barrel (3) with a suitable tool (1).

Repeat work operations with retainer (2) with next higher number (X) until correct retainer (2) has been found.

Carry out all further positions in lock barrel as described in the process above.

Fig 5: Pressing Retainer From Lock Cylinder Using Suitable Tool

Courtesy of BMW OF NORTH AMERICA, INC.