How do I rewind an airbag clock spring

Tiny
KRISTYN NORDICK
  • MEMBER
  • 1999 GMC SIERRA
  • 100,000 MILES
I am working on this truck that somebody else started and left for me to finish. So I am trying now to put the steering wheel back together but I do not know how to rewind the clock spring. Can you help please? Thank you
Tuesday, October 23rd, 2018 AT 12:55 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

Once it is unwound, you need to get a new clock spring. I attached the installation instructions below with pictures for you to view.

Roy

Notice: Ensure all fasteners are securely seated before applying needed torque. Failure to do so may result in component damage or malfunctioning of steering column.

1. Install the wave washer.
2. To install the SIR coil assembly, align the block tooth on the race and upper shaft assembly to the 12 o'clock position.

Important:
- Ensure that the coil assembly is centered.
- The coil assembly becomes un-centered under the following conditions:
- The steering column is separated from the steering gear and allowed to rotate.
- The centering spring is pushed down, letting the hub rotate while the coil is removed from the steering column. In the event this occurs. Refer to Inflatable Restraint Coil Centering in Steering Wheel and Column.

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3. Install the pre-centered coil assembly to the steering column. Remove the centering tab (1) and discard.

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4. Install the coil assembly (2) using the following components for alignment:
- The horn tower (1) on the canceling cam assembly inner ring
- The projections on the outer ring

Important: Gently pull on the lower coil assembly wire in order to remove any wire kinks inside of the column assembly. Ensure that there are NO kinks or bends in the SIR coil assembly wire. If a kink or bend is present, interference may occur with the shaft lock mechanism. Turning the steering wheel may cut or damage the wire.

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5. Install the coil assembly retaining ring. Ensure that the ring (1) is firmly seated in the groove on the upper shaft assembly (2).
6. Pop the wire harness assembly (4) into the wire strap (5).
7. Install the wire harness strap (2) into the upper tilt head assembly (1).
8. Install 3 wire harness straps (3) from the wire harness assembly.
9. Install the multi-function switch lever. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle See: Steering Column > Removal and Replacement.
10. Install the upper and lower shrouds. Refer to Steering Column Trim Covers - Disassemble - Off Vehicle See: Steering Column > Removal and Replacement.
11. Install the tilt lever, if equipped. Refer to Tilt Lever Replacement - On Vehicle See: Steering Column > Removal and Replacement.
12. Install the steering wheel assembly. Refer to Steering Wheel Replacement See: Steering Wheel > Procedures.
13. Enable the SIR system. Refer to Enabling the SIR System See: Air Bag(s) Arming and Disarming > Procedures.
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Tuesday, October 23rd, 2018 AT 3:14 PM

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