Old Magnet
Senior Member
Those eccentric adapters were used on later units that had the "buzz bomb" pony motors or factory direct start. The flywheel access hole was larger than the drive end housings of the starters.
Yes sir, and I learned a hard lesson with it. There was no gasket between either when I started working on mine, which explained why water from pressure washing got into clutch housing. Old Magnet, you truly amaze me with your knowledge sir!Those eccentric adapters were used on later units that had the "buzz bomb" pony motors or factory direct start. The flywheel access hole was larger than the drive end housings of the starters.
Following Old Magnet's advice, I removed the starter and cranked on the flywheel a bit with a bar and got it moving a tiny bit. Then I turned it back the other way, and found that I could turn the engine by hand, but only by about 30 or so degrees each way before something stops it. Injectors are still out and I poured about a cup of oil into each cylinder just to keep things smooth.
I am suspecting a stuck valve...when I say "suspecting" I really mean "hoping". I guess there could also be something like a mouse nest in a cylinder. I will pull the valve cover off tonight and see if I can get it to budge. If they are in good shape and not stuck, I guess I will be pulling the inspection covers off the side to see if I can see what's going on. Or maybe I should pull the head?
I'm getting a good workout wrenching on this thing. Every time I need a tool I have to climb off the track, walk 50 feet to my shop, walk back and climb back onto the track.
I would say the answer will be revealed once you get the timing cover off . Stay positive even though it doesn’t sound good, it could be something simple.Oh boy, are we getting into it now. I just keep repeating to myself: "it ran when parked, it ran when parked!".
I pulled the valve cover and checked out the valves. The #4 back valve is definitely not returning when I push down on it, but the other seem fine. Some surface rust sure, but can't really not expect that. This is after i hosed it down with penetrating oil, so it doesn't look too bad.
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The real problem is when I turn the crank. I see no movement whatsoever on the valve train. Check out the two pictures showing the amount of crank travel (around 30 degrees). Nothing is moving on the valves. Yikes! I guess I'll be pulling out the radiator next so I can get the camshaft out.
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I'm assuming this is an interference engine, so the root of my problem is either the cam gear is jacked up, the camshaft has sheared off, or some other form of torture I can't even come up with. Stay tuned!
Oh boy, are we getting into it now. I just keep repeating to myself: "it ran when parked, it ran when parked!".
My previous dozer was running fine before the crankshaft broke,,,,,,,,,,,,I always tell people that if it truly “ran when parked” it wouldn’t have been “parked”
Very rare to have valve train failure on these old beasts. As stated I don't think your getting enough flywheel rotation to really tell. At this point I'd say it's either head off or remove the #44 hydraulic control to get access to the crank. Other option is to rig up a hand crank affair in place of the starter although that will require a RH helical drive gear.
Sorry, had 2 solid weeks of in-laws visiting, and the weather has been rough.Update?