[AT] MF 135

[Cecil R Bearden]

Shimming the old 6 cyl Hercules engines was the ones that were a royal 
PITA you had to have the crush just right or the bearing would turn in 
the housing.  If I ever get a machine in with a Herc, I just scrap it 
and find a Continental....   I have one generator that has a Herc in 
it... It was supposed to run.  It was an old FAA remote direction 
unit...  It had a 100 gallon fuel tank that set 50 ft away.   I tried 
for a 1/2 day to get it to run.  Gave up and found one head gasket set 
in Tulsa OK.  Found one and only 1 set of rings at the Hastings 
Factory.  It took 2 days to get the pistons out without damage.  Still 
tore up the ring lands on one.  Got the new rings installed and 
installed pistons.  It got set aside for about 2 weeks during the spring 
hay season...  I got back to work on it and installed a propane carb.  
Started it up, it knocked a little.  Could not really determine what it 
was.  after about 45 seconds, a BIG BANG then clunk, clunk, clunk....  
Pulled head. Broken piston, bent rod, hole in cylinder and a chunk out 
of the block just above the pan..  Top of piece of piston was embedded 
with dirt.  Found Dirt Dauber nest in Manifold.  Manifold had been 
sandblasted and blown out during cleaning..   Filled the block with JB 
weld and Devcon..   Got another rod, piston, and rings from Hercano, 
then nearly had a heart attack when NAPA priced the repair sleeve.  
$100.00 !!!   I got one for a NAA ford for $18.00 from Hy-capacity.  
Bored the block for it, my boring bar was nearly too big for that size, 
but I got it done.  Sleeve stuck in the block half way down, after 
soaking in alcohol and dry ice.... I put a 1 inch iron plate in top and 
got a 10 lb sledge.  Sleeve moved about 1/4 in with each lick.  Bored 
sleeve to size.  Now I just need to get it outside and hang from the 
forklift with the steam cleaner to get all the cuttings out....I will 
change oil about 3 times in the first 2 hours, and I think It will be ok....

I tried to start one of my old pneumatic rollers last fall to pull the 
Ford Industrial engine out of and install in a forklift.  It ran like 
crap.  Found a dirt dauber nest on top of the throttle plate.  Luckily 
found it before it went through the manifold...

Cecil in OKla


On 4/6/2013 6:46 PM, Tom wrote:
> Can I ask why you didn't shim the rods to the crank while it was out?
>
> Tom
>
> --- On Sat, 6/4/13, drupert at seanet.com <drupert at seanet.com> wrote:
>
>
> I too find shims guesswork and a pain.  I am currently in the process of
> overhauling a 1952 JD Model B engine.  The crank has been reworked and is
> back in and the Block has been bored 90 thousands. The Rods have been
> checked, new Bushings installed and are now ready to be attach to the
> Crank.  However, the Rod Bearings(Babbitt) are adjusted via shims and
> therein is my excuse for procrastination.  I hate having to reach in the
> small access hole to tighten a Rod only to learn that I have to loosen it
> to add/substract shims and then drop some/all of the shims from one side
> of the Rod into the bottom of the engine only to not be able to reach
> under the Crank to retrieve all of those tiny brass shims.
>
>
> Dudley
>
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