Removing and installing contact spiral

AR46.10-S-0200A

Removing and installing contact spiral

7.6.01

 

Removing, installing

Danger!

Risk of injury when carrying out test or repair work on airbag or emergency tensioning retractor units

Store airbag units with deployment side facing up; do not expose to temperatures greater than 100 °C. Interrupt power supply when working on such units.

AS91.00-Z-0001-01A

1

Remove steering wheel

 Wheels must be in straight-ahead position.

AR46.10-S-0100B

2

Detach outer steering column cover (1)

3

Unscrew retaining bolts (3)

4

Detach inner steering column cover (2)

5

Detach paneling under left side of instrument panel

 Model 638.2 only

6

Cut through cable straps on plastic cable pouch (4) and guide all electrical connectors down and out of the plastic cable pouch (4)

 The plastic cable pouch (4) remains fastened to the transverse rod behind the instrument panel.

 Installation: Replace cable strap.

7

Unplug connectors (X113 and X125) from wiring harness (5) of contact spiral (R5)

8

Detach adhesive tapes, cable straps (arrow) and retaining clips on wiring harness (5) in vicinity of electrical center

 Route the wiring harness (5) so that no chafing or short circuits can occur.

 Replace cable straps.

9

Unscrew retaining bolts (6) just enough to be able to remove the contact spiral (R5)

 Unscrew retaining bolts (6) until the rotor housing of the contact spiral (R5) is blocked. The retaining bolts (6) also act as an anti-rotation device when the contact spiral is removed.

10

Carefully remove contact spiral (R5) from steering shaft

 The contact spiral (R5) must never be opened under any circumstances.

 If the contact spiral (R5) was twisted by unscrewing the retaining bolts (6) all the way, the center position must be reset. Refer to:

Adjusting center position of contact spiral

AR46.10-S-0200-01A

11

Install in the reverse order