SERVICE MANUAL UPDATE-SEC. 3C COIL SPRING REPL. (REVISED). GMC Truck Safari

THE FOLLOWING REPRESENTS NEW AND/OR REVISED INFORMATION FOR SECTION 3C OF THE 1992 M/L MODELS SERVICE MANUAL.

THIS INFORMATION REPLACES THE TEXT FOUND UNDER COIL SPRING ON PAGES 3C-17, 3C-18, AND 3C-19 OF THE 1992 M/L MODELS SERVICE MANUAL, X-9230.

COIL SPRING

REMOVE OR DISCONNECT (FIGURES 5, 6, AND 23)

TOOL REQUIRED:

J 23028 SPRING REMOVER

* RAISE VEHICLE AND SUPPORT WITH SAFETY STANDS.

THE LOWER CONTROL ARMS (27) MUST HANG FREE.

1. NUTS (29). 2. PUSH THE SHOCK ABSORBER (30) UP THROUGH THE LOWER CONTROL ARM AND INTO THE COIL SPRING.

CAUTION:

FAILURE TO SECURE TOOL J 23028 TO A SUITABLE JACK COULD RESULT IN SUDDEN MOVEMENT OF THE SUSPENSION OR TOOL THAT CAN RESULT IN PERSONAL INJURY.

3. SECURE J 23028 ONTO A JACK.

* POSITION J 23028 SO IT CRADLES THE INNER BUSHINGS (FIGURE 23).

4. STABILIZER SHAFT (40) FROM THE LOWER CONTROL ARM (27).

* REFER TO "STABILIZER SHAFT" IN THIS SECTION.

5. RAISE THE JACK (UNDER J 23028) TO REMOVE TENSION FROM THE LOWER CONTROL ARM BOLTS (41 AND 19).

IMPORTANT:

* INSTALL A CHAIN AROUND THE COIL SPRING (39) AND THROUGH THE LOWER CONTROL ARM (27) FOR SAFETY.

6. BOLT (19) AND NUT (18). 7. BOLT (41) AND NUT (42). 8. LOWER THE JACK UNDER J 23028. 9. SAFETY CHAIN AND COIL SPRING (39) ONLY AFTER ALL COMPRESSION IS REMOVED FROM THE SPRING.

IMPORTANT:

* DO NOT APPLY FORCE ON THE LOWER CONTROL ARM AND/OR LOWER BALL JOINT TO REMOVE THE COIL SPRING. PROPER MANEUVERING OF THE SPRING WILL ALLOW FOR EASY REMOVAL.

INSTALL OR CONNECT (FIGURES 5, 6, 24, AND 25)

NOTICE: FOR STEPS 5 AND 6, REFER TO "NOTICE" ON PAGE 3C-1.

TOOL REQUIRED:

J 23028 SPRING REMOVER

1. COIL SPRING (39) ONTO LOWER CONTROL ARM (27).

A. INSULATOR (21) MUST BE IN PLACE ON TOP OF THE COIL SPRING. B. INSTALL THE COIL SPRING SO THE TAPE IS AT THE LOWEST POSITION TOWARD THE LOWER CONTROL ARM (FIGURE 24). C. THE END OF THE LOWER SPRING COIL MUST COVER ALL OR PART OF ONE INSPECTION DRAIN HOLE. THE OTHER DRAIN HOLE MUST BE PARTIALLY EXPOSED OR COMPLETELY UNCOVERED.

2. LOWER CONTROL ARM (27) INTO POSITION.

CAUTION:

FAILURE TO SECURE TOOL J 23028 TO A SUITABLE JACK COULD RESULT IN SUDDEN MOVEMENT OF THE SUSPENSION OR TOOL THAT CAN RESULT IN PERSONAL INJURY.

A. SECURE J 23028 ONTO A JACK. B. COIL SPRING MUST BE PROPERLY SEATED INTO THE UPPER CONTROL ARM. C. POSITION THE LOWER CONTROL ARM SO THE BUSHINGS (35 AND 24) MATCH UP TO THE PROPER HOLES IN THE FRAME.

3. BOLTS (41 AND 19) AND NUTS (42 AND 18).

A. INSTALL BOLT (41) FIRST, THEN BOLT (19). B. BOLTS (41 AND 19) MUST BE INSTALLED IN THE PROPER DIRECTION (FIGURE 25). C. TIGHTEN NUTS (42 AND 18) BUT DO NOT TORQUE.

4. STABILIZER SHAFT (40) TO LOWER CONTROL ARM (27).

* REFER TO "STABILIZER SHAFT" IN THIS SECTION.

5. BOLTS (29).

* PULL THE SHOCK ABSORBER (30) DOWN THROUGH THE COIL SPRING AND ALIGN WITH THE HOLES IN THE LOWER CONTROL ARM.

TIGHTEN

* BOLTS (29) TO 25 N.M (18 LBS. FT.).

6. LOWER THE VEHICLE.

TIGHTEN

* NUTS (42 AND 18) TO 130 N.M (96 LBS. FT.) WITH WEIGHT OF THE VEHICLE ON THE WHEELS.

7. CHECK FRONT WHEEL ALIGNMENT. REFER TO SECTION 3A.

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.