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

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

If necessary, remove LOCK CYLINDER

NOTE:

Lock cylinder repair kit *(part number: 9 061 387) applicable to:
E30
Lock cylinder repair kit *(part number: 9 061 388) applicable to:
E31, E32, E34, E36, E38, E39
Lock cylinder repair kit *(part number: 7 001 461) applicable to:
E46, E52, E53, E60, E61, E63, E64, E65, E66, E67, E85, E86, E90, E91, E92, E93

* Sourcing reference: BMW Parts Service

Sort supplied retainers (1) by stamped numerical sequence (X) in ascending order and number (Y).

Fig 1: Identifying Retainers In Numerical Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Insert spring (1) into first lock cylinder position (2).

NOTE: Lock cylinder version (2) differs from vehicle to vehicle.

Fig 2: Identifying Spring And Lock Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Insert retainer (1) with lowest number (X) of first position (Y) in lock cylinder (2) and snap audibly into place.

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

Fig 3: Identifying Retainer And Lock Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

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

(A) OK
(B) not OK

Fig 4: Checking Retainer Flush
Courtesy of BMW OF NORTH AMERICA, INC.

If retainer (2) is not OK, press retainer (2) out of lock cylinder (3) with a suitable tool (1).

Continue with next number (X) higher of first position (Y) until retainer is OK.

The continue with all the other positions in accordance with the above-mentioned procedure.

Fig 5: Pressing Retainer Out Of Lock Cylinder Using Suitable Tool

Courtesy of BMW OF NORTH AMERICA, INC.