[TR] TR3A Lazy O/D

[Art McEwen]

Hi John I'll have a look at that site. 
 
The rear seal leaks a bit so it's not uncommon for me to be down a bit but I'd just topped it up the day before and checked the level before changing the oil and it was still full.  Oddly enough the O/D always engaged even when oil level was low.  I've run hypoid gear oil in the past but I've read other posts (and the original manual) that quote 30 engine oil.   I couldn't tell the difference in operation and I could be convinced either way at this point.
 
Cleaned the filter and the magnetic drain plug.  There were some metal filings in both, but since they came from the gears they don't qualify as "foreign matter" do they? ;) 
 
On 07/23/13, John Macartney <flywheelcoventry1 at yahoo.co.uk> wrote:

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> Art
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> The Buckeye Triumphs website has lots of helpful pointers on reluctant overdrives</x>. What you describe doesn't sound serious and in my experience might be one of four things:
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> 1. Low gearbox oil level / wrong oil grade. Should be 80W/90
> 2. Foreign matter in the O/D unit itself. Have you undone the large brass plug underneath it, pulled out the gauze screen and cleaned it?
> 3. A drop in overdrive operating pressure
> 4. The solenoid is now beginning to get a bit 'tired' and won't kick in and out as it used to.
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> I'd have a good look at points 1 - 3
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> Jonmac
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> > From: Art McEwen <amcewen2 at cogeco.ca>
> > To: triumphs at autox.team.net 
> > Sent: Tuesday, 23 July 2013, 18:07
> > Subject: [TR] TR3A Lazy O/D
> > 
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> > My O/D engaged once on the weekend but refused to do so for the rest of the
> > drive.  It's normally fairly snappy but there's always been the odd time when
> > there's a couple of seconds delay before it engages, but baring Lucas issues
> > it always does.
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> > When I crawled under afterwards I confirmed the solenoid is engaging but it
> > takes a tiny bit of manual pressure on the off-side external arm to get the
> > O/D to actually kick in, that push seems to be more than the solenoid is
> > capable of even though it seems to draw the arm up far enough.  Out of
> > desperation I changed the oil (10w30) but no joy.
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> > Im hesitant to adjust the screw on the solenoid plunger since the range of
> > motion seems correct, is there anything else somebody can suggest?
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> > Art
> > TS64somethingLO
> > 
> > ** triumphs at autox.team.net **
> > 
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