Engine stuck, I put a battery in it, replaced ground cable, anyway, turn to start, fan moves about a quarter of an inch, and then back.  Soaked 24 hours with PB Blaster and Carb cleaner (contains acetone) so far.  Hoping it may free up without pulling head, etc.  Will give a couple more days.  Me thinks its number two as spark plug had rust on it.  FWIW, the plugs where new, never run.

Second, the left steering clutch lever is (was) stuck forward position.  I looked into the brake adjuster holes and the left box was half full of water, right was dry.  Looked under machine, right plug was out.  Took left plug out and drained out about 4 gallons of water, no oil, which is good.  Anyway, gave the left steering clutch lever a yank (harder than before) and it freed up.  Probably take the cover off the box and give it a shot of blaster.

The tag (if believeable) said stored insice for many years, not run since put away.  It did however sit outside at the auction site for at least a month and we did have a couple torensial rainfalls during that time.  Still can not believe that much water found its way inside there, but no cracks from freezing, so I think it should be all right.

For future reference, is it ok to run with out he plugs??

For now, wait out the frooze cylinder..

cb1

cb1

leave plugs out unless you are working in water area ie creek, swamp etc. left clutch will probably be ok once water is drained and unit is  worked a little.

cb1

cb1

Anyway, two and three pistons stuck to sleeves. You can see the sleeves move up and down when toggling the start switch.

Rocker arms and shaft look the worst from condensation rust.

Probably replace all four piston sleeve assemblies and rod bearings..

cb1

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cb1

There is absolutly no ridge on one and four, two and three have enough pitting, that I would not want to use again, so I may just change out two and three.  Neighbor is a machinist, may have him measure one and four and go from there.

cb1

cb1

It had a muffler and rain cap, however, and automotive oval muffler with rolled end cap that actually held water, etc.  So, Im thinking some of that water found its way into two and three.

The stock muffler has a molded end as you know.

cb1

I understand your post, however, that could be a endless $$$$ rathole. I in the past have allready stuck 7G's into a 3G machine if you know what I mean.

I would like to know what else is wrong or weak with the machine besides the motor.  For the limited use it will provide (its a hobby for me) I will probably put two piston liner sets (90 bucks each), couple gaskets and a carb kit and see what happens.

Three hundred bucks onto the 1000 original price wont put me too far in the hole, just to see what I have.

cb1

 Ages cat made a comment..."The H3 may have been parked due to low oil pressure and if that is the case, then it is cam bearings, mains, rods , etc. " If that motor had low oil pressure, check the intake screen in the sump, check the bypass valve, and oil pressure springs and the biggest one is the little oil pump that is bolted to the back of the engine, it has 2 scrawny little springs that hold the vane blades apart, and had to replace those springs one time because they were next to disintegrated .

 

 I just broke loose a D7 that the coffee can on the exhaust had holes in it and those holes were directly down the pipe... Old Cat had been there so long that the tree growing up in the frame was 15 years worth of rings on it at 3 ft up. 

 Broke it loose, fired it up and drove her out to where we loaded it.

cb1

Deerhunting starts Saturday, so this may be a week or two..

cb1

What I found very effective in loosening the pistons was using the air-chisel on top of one of those "pucks". Using a 50/50 mix of acetone and automatic trans. fluid is awesome for loosening the pistons...just let it sit on top for a few days before you "harass" the pistons :-)

I locked the sleeves down with bolts and washers.  But the starter wont move them yet, so I am soaking them some 50/50 acetone/transmission fluid.

cb1

Glad I did as it looks like the rod bearing(s) are wiped out.  Looks like a complete now.

Pressed the piston out of the sleeve, yuk..

Oh, and I think I solved the riddle.  They (???) left the skid pan off and put a whopper of a dent in the oil pan, which in turn lifted the oil pickup out of the oil and walla, no oil, wiped bearings.  Then left out in the rain.

The good news is I really like this machine and how its put together.  Simple enough for even me.  And it doesnt look as bad as the pictures.

Now, pull the motor and put on a stand and the dozer on trailer back outside until the motor is dun.

cb1

 you are right, your in for a full overhaul... and get that block cooked.  Check the oil pump too, see if theres rust in it and make sure the little springs that hold the vanes apart are good. Hope the pistons are salvageable.

cb1

Rods at 030 is a concern as Im not too sure if they (Allis) surface hardened thier cranks and to what thickness.

I see they have new cranks out there for $400.  A little pricey but may have too...

cb1

Yep,

cb1

cb1

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cb1

 OSR, yur makin progress...

Orangeman

Thanks,

cb1

Still debating on the crankshaft, grind for 040 on the rods or get a new one for $400...