On a TR4 engine the fan is held on by 4 bolts, none of which is in the
middle or could be mistaken for a bolt that would turn over an engine.
The center bolt in the fan holds the fan extension onto the crank, and
in the older cars was actually the bolt that the hand crank attached to
to start the car.
Jim, if you're still trying to turn over the engine without having put a
good deal of penetrating oil into the cylinders and letting it soak,
you're probably going to damage the engine. Put a good deal of oil into
each spark plug hole and let it soak for a day or two at least. The
piston rings are very likely rusted to the cylinder liners, and if you
try to hard to turn the engine, the rings may break and damage the
liners.
My car sat for 3 years without running, but I poured some nice thick oil
into the cylinders each year it sat. As a result, it turned easily when
I next tried it.
"Scott A. Roberts" wrote:
>
> The crankshaft nut shouldn't be the one holding the fan on! That is usually
> a 1/4" bolt, that won't turn the engine! Don't break that bolt off- you'll
> have to pull the water pump to remove it!
>
> The Crankshaft nut is usually 3/4" or better- it is in the center of the
> crankshaft pulley,(The lowest pulley, attached to the front of the
> crankshaft) and once you put a big socket on it, and a breaker bar, you
> should be able to turn the crank. And go clockwise to see if it is free. You
> should see the valve train move within the first 1/4 turn.
>
> I suggest you refer to a mechanic manual or shop manual for your car, and
> look at the diagram of the crankshaft.
>
> Scott
>
> ----- Original Message -----
> From: <Ct54531@aol.com>
> To: <triumphs@autox.team.net>
> Sent: Friday, January 12, 2001 5:57 PM
> Subject: Stuck Engine Still
>
> >
> > Well, I pulled the radiator to get plenty of room at the crankshaft bolt
> with
> > a breaker bar and I turned (clockwise only) and I could feel the nut turn
> (a
> > little) but the valves remained totally still. I stopped before I turned
> > things too much and have to ask -- no matter how stupid it sounds. (For
> what
> > it's worth, I have turned engines by the crankshaft bolt before but.....I
> > hate to break things. Especially Triumph things.)
> > The crankshaft bolt is the one that holds the fan on, right (among other
> > things, of course). I mean, there's not another bolt in there somehow, is
> > there? Another less obvious or concealed bolt that's being referred to
> when
> > folks
> > mention the crankshaft bolt. This is a 65 4A but it has the yellow fan
> from
> > the 250. Fine. That means that the previous owner did a good thing putting
> on
> > the better fan --
> > but it had to be at least twenty years ago. And I've never had it off.
> Could
> > it be that the movement I feel in the bolt simply indicates that it had a
> > little bit of play before tightening and I should continue until it AND
> the
> > valves move.
> > Thanks.
> >
> > Jim
> > 65 4A
> > CT54531L
--
George Richardson
Wyvern - '57 Triumph TR3, TS15559LT -
http://www.merlingroupinc.com/tr3.htm
Griffin - '71 Triumph Stag - undergoing restoration
Pikachu - '75 Triumph TR6 - undergoing repair
Kitty - '83 Jaguar XJ6 Vanden Plas - Daily Driver
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