Tim,
thought I'd give me 2 cents worth here. Not to put the fear into
you, but I suffered similar problems with the O/D. Would very
rarely, drop out of o/d into 4th, and then when flickomng the
switch would not engage, but suddenly wham - it did.
I don't know if my o/d has problems as it isn't torn apart yet.
but the gearboc is. The car "suddenly" (son had it for a week)
wouldn't go into reverse, and the o/d seemed always to be on.
well, it came out 4 of july and went to Jim, my jag and super
Brit car mechanical wizard. Pulled apart on the wednesday, he
found a messy, expensive, but not too bad problem. my choice of
word - the idler shaft-- in the gear box, lower one... has a
bearing rod thru it, with floating needle roller bearing.
Somewhere along the road, one bearing then another then all of
them gave up. Completely out, chipped into little pieces, much
damage to the bearing mount area, and proactivcally destoryed the
shaft. Case was full of oil and little metal pieces. The new
pieces are on their way, and then the o/d will be disassembled.
Jim felt there wasn't a problem with the o/d as it did work, it
just didn't disengage. So He got a rebuild kit for that also.
He's going to strip it down, clean, repair, rebuild, reassemble
and give it back to me next week (I hope) so I can put it back
in.
Okay, after that story, what's my message. Gear oil is cheap.
get the car/gearbox warm, and drain all the oil from the gearbox
check for little metal pieces. if none, do a refill on it. the
box and o/d share the same oil, so maybe a flush will help it...
Hope it does...
Ken
73 TR6 (munney pit)
87 XJ6 SIII ('nutha munney pit)
----- Original Message -----
From: "Timothy Holbrook" <tjh173@yahoo.com>
To: "6Pack List" <6pack@autox.team.net>
Sent: Friday, July 14, 2000 04:49
Subject: Overdrive troubles
> Out of the blue yesterday, the overdrive on my car started
acting up.
> After about 15 minutes of highway driving at 75ish mph, the o/d
kicked
> out for about half a second, then went back in. A minute or so
later,
> it kicked out completely. I rode along in 4th direct for a
while,
> smelling for any electrical troubles. After another 5 minutes
of
> driving, I tried engaging the o/d, and it worked. I hit the
gas hard
> for a while to see if maybe I had a low oil level which was
giving the
> o/d unit trouble (by hitting the gas hard, load on the o/d unit
was
> increased and would therefore knock it out if the oil level was
low).
> Everything was fine, and the o/d was engaging smoothly as
usual. Low
> oil level is ruled out. After 5 minutes the o/d hiccupped,
then kicked
> out again. Upon returning home, I turned the car off and then
put the
> ignition on (car not running). Put the shifter in 3rd and hit
the o/d
> lever, relay clicked but no sound from the solenoid. A few
minutes
> later I tried again and everything worked fine. Drove the car
to work
> again this morning (no choice really, no backup transport) and
the o/d
> worked fine again for 15 minutes, then hiccupped and kicked
out. A few
> minutes later I was able to engage again, but then it kicked
out again
> later. The weather is cool, the o/d unit has worked flawlessly
for
> hours in temps 20 degrees hotter than yesterday.
>
> Sounds to me like the solenoid is overheating. Once it cools
off, it
> can work again, but heats up and shuts down a few minutes
later. Is
> this possible, do solenoids do this? Can I test it in anyway
to make
> sure that is the trouble before ordering a new solenoid (no
return
> policy on electrical items from TRF)? What else could it be?
I figure
> it sounds like everything is fine elecrically up to the relay
and
> mechanically everything is good, it's just a trouble either
getting
> juice to the solenoid (could the relay be causing trouble-maybe
not
> giving enough juice to the solenoid after a few minutes,
perhaps
> because of overheating?). Since the relay is clicking, it
sounds like
> juice is getting to the solenoid but the solenoid overheats.
Let me
> know what you think and how to proceed.
>
> For now I'll just have to go along without using overdrive, I
don't
> know how you non-o/d equipped drivers can stand it. At 80 mph
(my
> usual highway cruising speed), I usually turn 3250 rpm, but now
she's
> revving her guts out at 4000. I have to cruise at 70 now, and
even that
> is 3500 rpm. Triumph should have done a better job marketing
the o/d
> feature in the USA. Most of the European market cars have it,
but only
> a very small percentage of US cars seem to.
>
> Tim Holbrook
> 1971 TR6
>
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