Locks: Service and Repair

Key and Lock Cylinder Coding

Ignition Lock Cylinder





The ignition lock cylinder only uses 7 of the 10 cut positions, 2 through 8. The ignition cylinder tumblers (3) are located on alternate sides of the cylinder (1). They are snap-in and self-retaining. It follows the key code with the first tumbler being the first depth of the key code, closest to the head of the key.

1. Hold the ignition cylinder assembly (1) so that the side with the tumbler spring pocket located closest to the head of the cylinder is facing up.
2. Insert the tumbler springs (2) into each of the 4 spring pockets of the cylinder assembly.
3. The first tumbler (3) to be loaded will be the second key cut position, the second number in the key code. Install the first tumbler in the slot over the spring. Install the remaining tumblers for cuts 2, 4, 6, and 8 following the key code and the same process. Pressing the tumblers in place until they are secure.
4. Rotate the cylinder assembly. Insert the tumbler spring into each of the spring pockets of the cylinder assembly.
5. The first tumbler (3) to be loaded will be the third key cut position, the third number in the key code. Install the first tumbler in the slot over the spring. Install the remaining tumblers for cuts 5, 7, and 9 following the key code and the same process. Pressing the tumblers in place until they are secure.
6. Inspect for correct loading of the tumblers by inserting the key into the cylinder. The side bar should drop flush with the lock cylinder body diameter.
7. Lightly lubricate the outside surfaces in the tumbler area of the lock body and down the key slot using the provided grease. Insert and extract the key 5 times to lubricate the keyway.
8. Line up the lock to the run position. Insert the lock in the steering column. Rotate the lock to key out position and remove the key. Insert the key and rotate the lock 3 times to distribute the grease from the lock to the column housing inside diameter.

Front Side Door Lock Cylinder





The door lock cylinder only uses 7 of the 10 cut positions, 3 through 9. The tumbler positions are staggered from side to side, 4 on one side and 3 on the other side, are self-retaining. The left and right door lock cylinders are identical. The lever assembly determines which side of the vehicle the lock cylinder is for. After removing the current lock, record which lever is used and the orientation of rod clip.

1. Rotate the cylinder (1) so the side with the 4 tumbler spring wells faces up.
2. Insert the tumbler springs (2) into the 4 spring wells.
3. Install the tumbler (3) for key cut position 3 in the slot closest to the cylinder head. Install the remaining tumblers, key cut positions 5, 7 and 9, following the key code and same process. Press the tumblers in place until they are secure.
4. Check the correct loading of the tumblers by inserting the key into the cylinder. All tumblers should be flush with the lock cylinder body.
5. Turn the cylinder so the side with the 3 tumbler spring wells faces up.
6. Insert the tumbler springs into the 3 spring wells.
7. The first tumbler closest to the front of the lock cylinder to be loaded will be the fourth key cut position. Install the remaining tumblers for key cut positions 6 and 8. Press the tumblers in place until they are secure.
8. Check the correct loading of the tumblers by inserting the key into the cylinder. All of the tumblers should be flush with the lock cylinder body.
9. Apply lubricant to the cylinder body and tumbler surfaces along with a small amount in the head of the cylinder using the supplied grease.
10. Install 2 springs (4) into the spring wells in the head of the lock cylinder.
11. Snap the shutter assembly (5) into the cylinder.
12. Assemble the cylinder into the case (6).
13. Align dimples of the cylinder cap (7) with the 4 recesses in the cap. Secure by pressing the cap into place with light hand pressure.
14. If required, assemble the rod clip (9) to the lever (8) using the recorded lever information.
15. Assemble the lever to the lock. Use E-clip (10) to retain the lever assembly.
16. If supplied, assemble the gasket to the lock.
17. Insert the key into the lock and function the lock to check for proper assembly and smooth operation.

Instrument Panel Compartment Door Lock Cylinder





The internal lock cylinder only uses 4 of the ten cut positions, 7 through 10. The tumbler positions are on one side and self-retaining.

1. Rotate the cylinder (1) so the side with tumbler spring wells faces up.
2. Insert the tumbler springs (2) into the 4 spring wells.
3. Install the first tumbler (3) for key cut position 7 in the slot nearest to the front of the lock cylinder. Install the remaining tumblers following the key code.
4. Press the tumblers in place until they are secure.
5. Check for correct loading of the tumblers by inserting the key into the cylinder. All tumblers should be flush with the lock cylinder body.