Peter Zaborski wrote:
>
> > -----Original Message-----
> > From: JDCampa [SMTP:JDCampa@aol.com]
> > Sent: Tuesday, March 31, 1998 7:37 PM
> > To: triumphs@autox.team.net
> > Subject: 76 TR6 Over Drive
> >
> > My OD is no longer responding to the steering column switch and seems
> > to
> > engage and disengage on its own volition. If still on when I back up,
> > it
> > makes terrible grinding noise. A local mechanic says the problem not
> > electrical and I need to drop the tranny to get at the OD.
> > Any ideas?
> > Have I ruined the OD or tranny by backing up with OD engaged?
> > If so, can I rebuild it?
> >
> JD,
>
> First of all, don't drive it in reverse!!! This will result in expensive
> to repair damage (you may have already reached this point).
>
> Second, it sounds as if you have at least two problems.
>
> 1. The column switch - The only way the o/d will engage is if the
> solenoid attached to the trans is getting 2 amps of current. So the
> sporadic engage and disengage has to be caused by an electrical problem.
> Most likely the switch is either fried or needs to have its connections
> checked. A wiring diagram will help you with this analysis.
>
> 2. Engaging in reverse - there is a switch on top of the trans which is
> supposed to shut off power to the solenoid whenever the car is in
> reverse (or in 1st or 2nd on 76 TR6s) no matter what position the column
> switch is in. It sounds as if you have a problem with this switch as
> well. As I said, serious damage results if you drive with the car in
> reverse and o/d on - the "lockout" switch is supposed to prevent this.
>
> I would definitely start by making sure the electrics are working as
> designed. You will need to pop the trans cover off to get at the lockout
> switches but before going that far, just check that the solenoid is
> getting power when required. The Bentley manual does explain how to do
> this.
>
> Good luck,
>
> Peter Zaborski
> 76 TR6 (CF58310 UO)
> Calgary AB Canada
>
> > Thanks
I was under the impression that only the earlier A type O/D was damaged
if put in reverse, and the J type was OK (although not desirable)\
Stu with J O/D
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