[TR] Horn Works on its own

[tom white]

Hi Bob,

The problem may not be the contact rod in the steering hub.  This problem os
common to TRs.  It is caused by the turn signal cam coming into close
proximity with the horn contact ring.

To cure the problem remove the turn signal housing and switch.  With a pair of
pliers remove the turn signal cam from the steering shaft.  Then cut half the
distance from the top end of the cam to the locating dimple off of the cam.
Reinstall and you problem is gone.

Best regards,
Tom

> From: 75TR6 at tr6.danielsonfamily.org
> To: triumphs at autox.team.net; 6pack at autox.team.net
> Date: Thu, 18 Oct 2007 16:35:27 -0400
> Subject: [TR] Horn Works on its own
>
> Today I'm at a stop sign and as I start to turn left I hear a horn blaring
> at me so I stop and look around and it's still blasting
away..............uh
> oh............it's my car's horn going off. Go straight, it's quiet, turn
> right or left and it comes on. Pull over pull the fuse and I'm on my way,
> but I can hear something scrapping inside the hub as I turn the wheel. This
> is a Grant wheel and hub that I've had on the car for about 8 years. I pull
> it all apart and find a spring lying inside the adapter next to the TR6
> copper horn contact ring. There's also a pile of copper shavings in there.
> On the Grant adapter there's a copper rod that passes through the adapter,
> held in place by the spring and makes steady contact with the ring. I
called
> Grant and actually talked to one of their engineer/designers who said it
> sounded as if the cap on the copper rod that holds the spring in place had
> worn down allowing the spring to fall off. He then asked me what I had used
> for lube when I did the installation. Lube? I'm looking at the instructions
> and tell him that there's no mention of lubing this part. Pregnant pause on
> his part followed by...."anytime you have metal to metal contact of moving
> parts you need some type of lube".... point taken. He was a real nice guy
> who actually called back within 5 minutes of me leaving him a message.
> Unfortunately these hubs are out of their Italy plant so he has to contact
> them for a replacement part. In the meantime, I'm thinking of fabricating
> something to hold the spring in place until I can get the replacement part.
>
> Bob Danielson
> 1975 TR6 CF38503U
> Running w/ Throttle Body Injection
> http://tr6.danielsonfamily.org
>
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> 7:53 PM

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