E-Type Restoration Guide - Turn Signal Problems
Someone recently asked me some questions about the turn signal assembly.>Here's one while I'm thinking about it: The turn-signal lever has a splined end >where it connects to the steering column (where it connects to the piece of >metal that rotates on a pin causing the turn-signal switches to engage). On >mine, the lever is loose. The splined end doesn't really engage with anything - >it just sits loosely in the socket which seems too large for the splined end. >Exactly how should the turn signal lever engage with the socket? Should the >splined end engage with a female spline which is worn out, or just by friction, >or is there a nut or something missing? Let me know if you have the answer to >this one.
There are two locks, one on the top, one on the bottom of the assembly. These correspond to the right and left turn positions respectively. They are comprised of a locking spring, a trigger, and a trigger return spring. The locking spring is a flat 'U' shaped spring which engages and locks the plastic assembly at the base of the lever. The triggers are metal fingers which project into the white wheel. When displaced in the right direction, they will release the lock spring.
If your lever moves up and down, but doesn't lock in place, then the lock springs are broken. The only cure is a new switch.
The white wheel should be dead center on the column, although the fit may seem a bit loose. When centered properly, the wheel will not be in contact with the steering shaft. I will explain how this works in a moment. When the white wheel rotates, a projection inside the white plastic wheel slips by the signal lock trigger. This projection is in the 'valley' between the back of the white wheel and the splines on the forward rim. As the wheel returns, this projection engages the lock trigger, and releases it.
If the turn signal doesn't cancel, then either a trigger is missing, a trigger return spring is missing, or the projection inside the white wheel is worn out. depending on the problem, you may be able to jury rig a solution, but the switch should really be replaced.
The white wheel is coupled to the steering shaft by a shaped metal ring. This ring has a projection on one side which engages one of the splines on the white wheel. It doesn't matter too much which spline is engaged, and once a positioned, it always engages the same spline. This ring is split on one side, and the split engages a screw-in stop which controls the movement of the upper steering shaft. The ring is also split down the sides, and screws tightly to the steering shaft, held by two screws and specially shaped washers.
If the white ring does not rotate as you move the steering wheel, then the metal ring is broken, missing, or misaligned.
If you need a new switch, my condolences: They are very expensive.
Mike Frank 1969 E-type 2+2