Assembling and Coding IP Storage Compartment Lock Cylinder

The IP storage compartment lock only uses 4 of the ten cut positions 7-10. A retainer tumbler is used in the IP storage compartment lock to retain the lock cylinder in the latch assembly. This retainer tumbler is not moved by the key. The retainer tumbler occupies the slot closest to the head of the IP storage compartment lock cylinder and should come already installed in the cylinder.

1. Hold the cylinder (3) so that the side with 4 tumbler spring wells is facing up.
   Fig 1: Inserting Tumbler Springs Into 4 Spring Wells

   Courtesy of GENERAL MOTORS CORP.
2. Insert tumbler springs (2) into the 4 spring wells.
Fig 2: Identifying Key Cutting Depths
Courtesy of GENERAL MOTORS CORP.
3. Install the tumbler (1) for key cut position 7 into the slot nearest to the front of the lock cylinder.
4. Install the three remaining tumblers, key cut positions 8, 9 and 10, into the cylinder.
5. Snap the tumblers into place with light hand pressure.
Fig 3: Inspecting For The Correct Loading Of The Tumblers
Courtesy of GENERAL MOTORS CORP.
6. Inspect for the correct loading of the tumblers (1) by inserting the key into cylinder (3). All of the tumblers should be flush with the lock cylinder.