[T2] turn signal cancellation

[T2] turn signal cancellation

c.dreike c.dreike at verizon.net
Fri Feb 15 19:49:25 PST 2019


Hi Guys,
I think I've figured out what is going on with my turn signal switch. 
This a very interesting mechanical assembly. It relies on the cancel 
nubs to float so that when the lever is pushed or pulled and the nubs 
extend and hit the cancel ring, the nubs don't fully extend until the 
cancel ring clears. However when the cancel ring comes back across and 
hits the side of the nub (which has extended fully when the wheel is 
turned) the signal is canceled.

Here is how the turn signal switch mechanism should work:
1. Push lever forward for a right hand turn while the steering wheel in 
centered and the cancel ring is on the adjacent to the switch. The 
cancel nub extends until touching the cancel ring.
2. Make the turn to the right. When the cancel ring clears the nub, the 
nub fully extends.
3. The steering wheel is returned to center after the turn is complete. 
The ring now hits the side of the nub and cancels the switch.
The key here is that the cancel nubs float smoothly.

1.The original VW unit I have is just a bit worn out. It latches into 
left and right position when the ring is clear of the switch, however 
when the cancel nubs are jostled in any way, the mechanism cancels. The 
latching is no longer stiff enough to hold in position. The nubs do move 
smoothly.

2. The first repop unit I have works OK, except that the electrical 
shorting bars are a bit too wide as compared to the VW unit and the 
shorting bar bit is catching slightly and not returning completely 
leaving the blinker running until I joggle the handle a little.

3. the second repop unit I have is just a mess. All the stamped parts 
look good. It latches into left and right properly, however the cancel 
nub pieces are not floating smoothly because the stampings have burrs, 
or the rivets were pressed down too tight or the spacer is just a hair 
too short causing the nubs to drag. When actuating left or right, the 
nubs extend and hit the ring too hard causing the switch to instantly 
cancel.

So, I have called the supplier and they are going to see if they can get 
one that works. Short of that I will return for a refund and look 
elsewhere. Maybe Bus Depot has units that work or maybe Wolfsburg West. 
Maybe I find a working unit on The Samba or at a swap.

Where would you guys look?

Cheers,
Chris
71 sunroof
64DD Kamper Kit




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