Clock spring device

CLOCK SPRING DEVICE

The Clock Spring device (1) is installed on the steering column lever unit and allows the Air Bag module connection cables and the electric horn connection to follow the rotation of the steering wheel without breakage or damage.

The device comprises two plates:

• the lower one is fastened to the steering wheel lever unit by an internal grooved profile;
• The upper one is made integral with the steering wheel by a torsion spring (2) which also has a safety purpose.

The spring (2) allows rotation of the spiral cable with the steering wheel.

When the spring (2) is removed, pin (3) comes out and prevents rotation between the steering wheel and the device; in fact the upper plate, no longer restrained to the steering wheel, might turn and and unwind or wind the spiral cable incorrectly, and this might result in breakage of the cable itself.

WARNING : when the device has been removed, if for any reason the upper plate is rotated with respect to the lower one - for example pin (3) pressed inadvertently - it becomes impossible to ascertain their exact respective position.

In this case the two plates must be turned to their ends - pressing pin (3) - and the cable should be rewound for 3.5 turns: this position corresponds to half of the winding, therefore the device must then be refitted on the car with the wheels exactly in the straightahead position.

PASSENGER’S SIDE AIR BAG MODULE

The passenger Air Bag module is also enclosed in a container which is fastened on a metal frame inside the dashboard above the glovebox.

The composition and operating principle are the same as for the driver's side module.

1. part name
2. part name
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