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From: Noddy on 2 Aug 2010 07:54
All,

I've got a little Komatsu FG-12 1 tonne forklift that needs a new engine,
and I was wondering if anyone is in the know about where to find either a
good used one or a decent rebuilder.

It runs a Toyota 4P on petrol, which is an industrial engine with a
hydraulic pump drive outlet hanging off the left front. It's a 1.3 litre 4
cylinder that kinda looks like a cross between a 12R and a 3K, and while it
seems like a solid little engine it's off it's nut and needs to be rebuilt
as it has sludge around an inch thick under the rocker cover and the oil
rings are fucked. Half an hour of using the thing and my shed is full of
enough putrid burnt oil smell that I have to go outside and let it air out
for a while.

There's not a lot of info around on 4P engines, but from what I can tell
these little Komatsu forks came fitted with either the Toyota 4P or a Nissan
H20. If I could find a reasonable running 4P I'd do a straight swap for this
one and put the original engine aside to rebuild later when I have time, but
if I could get a H20 and fit that without too much trouble I'd give that a
go as well.

Anyway, if anyone knows of anything I'd be grateful for any help.

--
Regards,
Noddy.


From: tipsy on 2 Aug 2010 08:55
On Mon, 2 Aug 2010 21:54:23 +1000, "Noddy" <me(a)home.com> wrote:

> All,
>
> I've got a little Komatsu FG-12 1 tonne forklift that needs a new engine,
> and I was wondering if anyone is in the know about where to find either a
> good used one or a decent rebuilder.
>
> It runs a Toyota 4P on petrol, which is an industrial engine with a
> hydraulic pump drive outlet hanging off the left front. It's a 1.3 litre 4
> cylinder that kinda looks like a cross between a 12R and a 3K, and while it
> seems like a solid little engine it's off it's nut and needs to be rebuilt
> as it has sludge around an inch thick under the rocker cover and the oil
> rings are fucked. Half an hour of using the thing and my shed is full of
> enough putrid burnt oil smell that I have to go outside and let it air out
> for a while.
>
> There's not a lot of info around on 4P engines, but from what I can tell
> these little Komatsu forks came fitted with either the Toyota 4P or a Nissan
> H20. If I could find a reasonable running 4P I'd do a straight swap for this
> one and put the original engine aside to rebuild later when I have time, but
> if I could get a H20 and fit that without too much trouble I'd give that a
> go as well.
>
> Anyway, if anyone knows of anything I'd be grateful for any help.

Put a 350 Chev in it! ;-)

From: John_H on 2 Aug 2010 18:52
Noddy wrote:
>
>I've got a little Komatsu FG-12 1 tonne forklift that needs a new engine,
>and I was wondering if anyone is in the know about where to find either a
>good used one or a decent rebuilder.

Are you sure the bits are available to rebuild it?

Neither of the two forklift engines I've been inside of have been what
they seemed (ie standard industrial engines). One was a Mitsubishi,
the other a Mazda and both engines were oddballs, presumably built
especially for the forklift manufacturer. No internal parts serviced,
no parts lists in existence and very little that's interchangeable
with other engines.

Plus a hundred others chasing replacement engines.

Neither forklift was anything like a viable proposition to resurrect,
particularly when you could buy a used forklift complete for very
little money.

You might be better off looking for a forklift attachment for the
bobcat if you only need to lift a tonne! :)

--
John H
From: Noddy on 2 Aug 2010 19:18

"John_H" <john4721(a)inbox.com> wrote in message
news:rehe5611fl4p0vk11qngasjbpmbv9ms23f(a)4ax.com...

> Are you sure the bits are available to rebuild it?

They are in the US at reasonable prices.

Apparently these little 4P engines were used mainly in commerical equipment
destined for the Japanese domestic market, and in some US based machines. I
think they were even used in some very small early model US based trucks
like a "Tundra" or so. You can buy complete "rebuilder" kits through US
based Ebay sellers for around 700 bucks which includes everything, but the
problem for me is that I need to use the fork now and don't have time to
rebuild the engine for a while.

> Neither of the two forklift engines I've been inside of have been what
> they seemed (ie standard industrial engines). One was a Mitsubishi,
> the other a Mazda and both engines were oddballs, presumably built
> especially for the forklift manufacturer. No internal parts serviced,
> no parts lists in existence and very little that's interchangeable
> with other engines.
>
> Plus a hundred others chasing replacement engines.
>
> Neither forklift was anything like a viable proposition to resurrect,
> particularly when you could buy a used forklift complete for very
> little money.

This is actually a great little fork.

Early 90's model with perfect hydraulics, two stage container mast, auto
trans, pneumatic tyres, good brakes etc. It's a great little machine that
works well for everything I want, but it's just a shame that like so many
forklifts at the hands of careless owners the engine never got looked at
unless it stopped.

> You might be better off looking for a forklift attachment for the
> bobcat if you only need to lift a tonne! :)

I actually sold the Bobcat to a bloke in QLD a couple of months ago, as it
was going to be too big for what I wanted. The thing weighed nearly 4 tonne
and had a very wide footprint which made it unsuitable for some of the
narrow track landscaping that the wife wants to do. A shame really as I put
a lot of time and effort into turning it into a decent machine, but it's up
in your part of the world now.

I need another machine, and fairly quickly now as I need to get water tanks
in soon, and I'm tossing up between a 1 tonne sized bobcat or a Kubota
tractor with a backhoe.

--
Regards,
Noddy.


From: hippo on 2 Aug 2010 21:26
Noddy wrote:
>
> All,
>
> I've got a little Komatsu FG-12 1 tonne forklift that needs a new engine,
> and I was wondering if anyone is in the know about where to find either a
> good used one or a decent rebuilder.
>
> It runs a Toyota 4P on petrol, which is an industrial engine with a
> hydraulic pump drive outlet hanging off the left front. It's a 1.3 litre 4
> cylinder that kinda looks like a cross between a 12R and a 3K, and while it
> seems like a solid little engine it's off it's nut and needs to be rebuilt
> as it has sludge around an inch thick under the rocker cover and the oil
> rings are fucked. Half an hour of using the thing and my shed is full of
> enough putrid burnt oil smell that I have to go outside and let it air out
> for a while.
>
> There's not a lot of info around on 4P engines, but from what I can tell
> these little Komatsu forks came fitted with either the Toyota 4P or a Nissan
> H20. If I could find a reasonable running 4P I'd do a straight swap for this
> one and put the original engine aside to rebuild later when I have time, but
> if I could get a H20 and fit that without too much trouble I'd give that a
> go as well.
>
> Anyway, if anyone knows of anything I'd be grateful for any help.
>
> --
> Regards,
> Noddy.
>
>
>
>

Just a thought. IIRC, the two tractors that many state railways used to
use had a governed version of the early Corona (1600? - model unknown)
engine in them, usually running LPG. What's the chance on compatibility
with size, mounts, etc? Just thought of it because there are still heaps
around in various stages of repair at caravan and boat yards. Cheers

--
Posted at www.usenet.com.au
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