Re: 1947 Horn Ring Removal

Posted by HH56 On 2017/6/18 9:01:43
On the turn signals, check the gap between the steering wheel and the column. It could be the column has slipped and is too far down so the cancelling hooks on the switch cannot reach the pins on the back of the steering wheel. You may need to loosen the clamp at the base of the column to steering box and the one under the dash to pry or slide the entire column up an eighth of an inch or so. There is a concave ring that surrounds the shaft and forms the inner race of the upper bearing. It is under spring pressure. If the column has slipped that ring will prevent the column from sliding up. Wheel will need to come off to relieve the spring tension. You can then manually pull the ring up so the column can raise.

Using the drawing Wes made, here is a depiction of the electrical path for the horn contact.

The relay coil wire is plugged into the main loom a short distance away from the end of the steering box. The upper end of the wire is insulated from the grounded steering shaft via a phenolic washer like piece and makes contact directly with the inner mounting or contact plate which is screwed to the steering wheel. Blue shading shows those parts. The inner mounting and contact plate is kept insulated from ground via the plastic steering wheel hub and some insulator washers that keep it separated from other grounded parts inside.

Ground from the steering shaft is transferred to the outer chrome ring via the bottom cup, large spring and the upper spring support piece which is screwed thru insulating washers to the chrome ring. Insulating washers keep the screws and support from touching the contact plate. Those pieces are identified with the red shading.

When the horn ring is pushed, the chrome ring pivots a small amount on another piece of plastic to touch its inner circumference to the outer edge of the contact plate. The horn relay coil gets ground to energize and blow the horn. Oxidation on either piece can make the horn very intermittent.

Attach file:



jpg  (109.92 KB)
209_5946882bcd876.jpg 975X819 px

jpg  (122.70 KB)
209_59469d64d0783.jpg 1250X960 px

jpg  (128.89 KB)
209_5946a2600e35d.jpg 1280X1025 px

This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=193153