Problem #3 (all pictures) Probably the most difficult problem to diagnose and repair is when the turn signal turns off but does not return to center. When this happens the brake light on the side where the turn was last signaled will stop working. Anyone following you will only see one brake light working. To fix the problem you will need to look at several things. First check the pawl (part #13309) for wear. Rounded corners on the pawl will allow them to slip off the steering wheel cam ring and cause the turn signal plate to hang up in the top of the detent. If the corners are rounded, replace the pawl. Next check the steering wheel cam ring (part #13318) to make sure there is not a groove forming where the pawl contacts the cam ring. If you can feel a groove, replace (or turn over) the cam ring. To replace these parts use the process described for problem #1. When you replace the pawl check the turn signal plate to make sure the roller has a good downward pressure on the detent and bend the plate if necessary to increase the pressure.

            One additional thing to check is the height and position of the turn signal plate assembly under the conical spring. This area of the plate assembly must be flat and evenly contact the top of the turn signal switch. If it is not sitting flat manually bend the plate until it does. Check to make sure that the two button-head screws holding the turn signal switch in position are tight. Recently I ran across a case where the wrong screw had been used to retain the turn signal switch. The screw was too long and it had the wrong head. A lock washer had been added to secure the switch causing the bolt head to protrude above the top surface of the switch. This was holding the turn signal plate assembly off of the switch and prevented it from properly contacting the steering wheel cam assembly and turn signal detent. Check these screw when working on your signals to be sure they are both the correct button-head screws.

            (Editors note: I’ve observed this exact same problem being caused by white grease being applied to the mechanism. It has a tendency to dry out and become very stiff. A good cleaning was all that was necessary.)
            This may seem like a lot of detail but it is well worth the time spent to get your turn signals working properly. It sounds harder than it is. These repairs are quick and easy and the parts are not expensive.