INFORMATION ON SERVICING SINGLE KEY LOCK CYLINDERS

SUBJECT: INFORMATION ON SERVICING SINGLE KEY LOCK CYLINDERS

MODELS: 1995 CHEVROLET CAVALIER 1995 PONTIAC SUNFIRE

THIS BULLETIN IS BEING ISSUED TO SPECIFY THE REQUIRED PARTS AND PROCEDURES NEEDED TO SERVICE SINGLE KEY LOCK CYLINDERS.

ORDER REQUIRED PARTS FROM THE FOLLOWING COMPANIES:

1. GM SERVICE PARTS OPERATIONS (GM SPO)

PART NAME PART NUMBER ========= ===========

KEY BLANK 26049133 LOCK REPAIR KIT (TUMBLERS AND SPRINGS) 12523985 LOCK TUMBLER OIL - MOBIL 1 SYNTHETIC SAE 5W30 12346184 LOCK RETAINER GREASE - HIGH TEMPERATURE 12345996 IGNITION LOCK - AUTOMATIC TRANSAXLE 26050287 IGNITION LOCK - MANUAL TRANSAXLE 26050284 DOOR LOCK - CHEVROLET AND PONTIAC 12523630 DECK LID LOCK - PONTIAC (BOLT MOUNT) 12523632 DECK LID LOCK - CHEVROLET AND PONTIAC (CLIP MOUNT) 12523631 GLOVE BOX LOCK - PONTIAC 12523633

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

2. KENT-MOORE SPX CORPORATION ORDER DEPARTMENT 29784 LITTLE MACK ROSEVILLE, MI 48066-2298 PHONE: 1-800-345-2233 (FOR U.S. DEALERS) 1-800-GM-TOOLS (FOR CANADIAN DEALERS) FAX: 1-800-578-7375 (FOR U.S. AND CANADIAN DEALERS) OR (810) 578-7375

PART NAME PART NUMBER ========= ===========

LOCK CYLINDER STAKING AND HOLDING FIXTURE J41340 CAPPING FIXTURE TOOL (FOR DOOR AND DECK LID LOCKS) J41674

TUMBLER POSITION:

THE SINGLE KEY HAS 10 TUMBLER POSITIONS. THE 1 POSITION IS CLOSEST TO KEY HEAD AND THE 10 POSITION IS CLOSEST TO KEY TIP. THE FOLLOWING TABLE SPECIFIES THE TUMBLER POSITIONS USED BY EACH LOCK CYLINDER:

PART NAME TUMBLER POSITIONS ========= =================

IGNITION LOCK 1 - 9 DOOR LOCK 6 - 10 DECK LID LOCK 3 - 7 GLOVE BOX LOCK 6 - 10

SERVICE PROCEDURE:

THE FOLLOWING SPECIFIES THE PROCEDURE TO ASSEMBLE AND CODE IGNITION LOCK CYLINDERS.

ALL IGNITION LOCK CYLINDERS -

IMPORTANT: THE LOCK CYLINDER CODING AND ASSEMBLY PROCEDURES REQUIRE THE FOLLOWING SPECIAL TOOL (OR EQUIVALENT):

J41340 - LOCK CYLINDER STAKING AND HOLDING FIXTURE

ONCE THE PROPER IGNITION LOCK CYLINDER AND TUMBLER SERVICE SETS HAVE BEEN ACQUIRED, PROCEED WITH THE CODING AND ASSEMBLY PROCEDURE.

1. DETERMINE TUMBLER NUMBERS AND ARRANGEMENT BY PLACING THE TIP OF THE KEY DIRECTLY OVER THE TIP OF THE ILLUSTRATED KEY (SEE FIGURES 1 OR 9). BE SURE THE KEY IS OUTLINED BY THE DIAGRAM.

- START WITH POSITION NUMBER ONE. FIND AND RECORD LOWEST LEVEL (TUMBLER NUMBER) THAT IS VISIBLE. REPEAT FOR EACH OF THE REMAINING NINE POSITIONS.

2. STARTING WITH POSITION ONE (OPEN END OF CYLINDER), INSERT TUMBLERS IN THEIR PROPER SLOTS IN THE ORDER CALLED FOR BY THE CODE.

3. PULL THE SIDE BAR OUT WITH YOUR FINGERS SO THAT THE TUMBLERS WILL DROP COMPLETELY INTO PLACE.

4. INSERT ONE TUMBLER SPRING ABOVE EACH NUMBER.

5. LUBRICATE THE TUMBLERS WITH MOBILE 1 SYNTHETIC SAE 10W30 ENGINE OIL, P/N 12346184. (SEE FIGURE 2).

IMPORTANT: DO NOT USE (NON-SYNTHETIC) ENGINE OIL.

6. INSERT THE SPRING RETAINER SO THAT ITS END PRONGS SLIDE INTO THE SLOTS AT EACH END OF THE CYLINDER. (SEE FIGURE 3).

7. PRESS THE RETAINER DOWN. MAKE SURE THAT THE RETAINER IS FULLY SEATED IN THE DEPRESSION.

8. WHILE HOLDING SPRING RETAINER IN POSITION, INSERT THE KEY INTO THE LOCK CYLINDER TO CHECK FOR PROPER TUMBLER INSTALLATION.

THE SIDE BAR WILL DROP DOWN FLUSH WITH CYLINDER DIAMETER IF THE TUMBLERS ARE INSTALLED PROPERLY. DISASSEMBLE AND REASSEMBLE IF NECESSARY. (SEE FIGURE 4).

9. REMOVE THE KEY AND SECURE THE CYLINDER IN A LOCK CYLINDER STAKING AND HOLDING FIXTURE. (SEE FIGURE 5).

- MAKE SURE THE SPRING RETAINER IS FACING UP AND IS POSITIONED DIRECTLY UNDER PUNCH SLOTS.

- PUSH THE CYLINDER INTO THE LOCK CYLINDER STAKING AND HOLDING FIXTURE AS FAR AS IT WILL GO. THE PUNCH SLOT NEEDS TO BE BUTTED UP AGAINST THE CYLINDER BEZEL.

10. TIGHTEN HOLDING SCREW TO SECURE CYLINDER IN THE LOCK CYLINDER HOLDING FIXTURE.

11. HOLD THE FLAT SIDE OF PUNCH SQUARELY AGAINST THE FACE OF THE CYLINDER BEZEL (SEE FIGURE 6) AND STAKE THE RETAINER IN PLACE BY STAKING LOCK CYLINDER METAL OVER THE RETAINER CORNERS.

12. REMOVE THE PUNCH AND ROTATE 180 DEGREES. HOLD IT SQUARELY AGAINST THE END OF THE PUNCH SLOT AND STAKE METAL OVER THE OTHER END OF THE RETAINER. (SEE FIGURE 7).

13. LOOSEN HOLDING SCREW AND REMOVE CYLINDER FROM LOCK CYLINDER HOLDING FIXTURE.

14. INSPECT RETAINER STAKING TO MAKE SURE THE DEFORMED MATERIAL IS TOUCHING THE RETAINER TO SECURE THE RETAINER IN POSITION. REPEAT STAKING IF NECESSARY.

15. LUBRICATE THE CYLINDER RETAINER SLOT AND INSERT THE RETAINER SPRING AND THE CYLINDER RETAINER INTO THE SLOT IN CYLINDER. (SEE FIGURE 8).

16. LUBRICATE THE DETENT PINS AND CYLINDER RETAINER WITH P/N 12345996 OR AN EQUIVALENT HIGH TEMPERATURE GREASE.

IMPORTANT: USE A PASTE TYPE GREASE, NOT A SPRAY.

FIGURES: 9 ATTACHMENTS: 0

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.

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