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Engine that turns a bit?

D

dej(Jed)

Well-known Member
Okay--I have a big old 4 cylinder gasoline engine that will turn over a bit using a pry bar on the fly wheel. I have checked the valves and removed the fan belt to stop any drag. This unit does have a hydraulic pump on the pto. When it moves with the pry bar, it sounds like it is hitting something in the engine. Any ideas would be appreciated?
 
Has the exhaust been covered? I bought a 77 Oliver that you could move about 60 degrees with a pry bar. The exhaust had been left uncovered and dirt dobbers had filled the number 4 and 5 cylinders with mud. I took head off and found this.

Good luck.
 
Only idea I've got is the one you're probably trying to avoid:

Remove the head. Remove the oil pan.

There might just be a ridge of rust in one of the cylinders.
 
Sometimes it can be odd but simple things.
My pal Kenny bought a Ford 172 diesel that had been on a stationary power unit to put into his 801 tractor.
It turned freely but wouldn't go all the way over.
We pulled the head and found that mice had stored corn in the exhaust manifold and some of it had gotten past the valves and into the cylinders.
We blew it out and put a new head gasket on and he had a good running engine.
 
(quoted from post at 06:40:30 01/30/14) Okay--I have a big old 4 cylinder gasoline engine that will turn over a bit using a pry bar on the fly wheel. I have checked the valves and removed the fan belt to stop any drag. This unit does have a hydraulic pump on the pto. When it moves with the pry bar, it sounds like it is hitting something in the engine. Any ideas would be appreciated?
Click to expand...

Okay--what you are saying make sense. I guess I am afraid of pulling the head because I probably can't get a new gasket.
This is a 1934 CAT gasoline engine.
 
Like other post said remove head and pan and you will find the problem using a crowbar will not fix anything as theres a reason it wont turn over.
 
My grandfathers JD B would act like that. One winter morning I couldn't turn it over. Later in the afternoon it turned over fine. Water was making its way into the crank case. We promptly drained the water. My McD W30 had a huge mouse nest in one of the cylinder. So like others have said, pull the pan and the head.
 
Is it a dozer pony motor?

gaskets are available for just about every single CAT engine ever made. Lot's of people still use them.
 
Do you have the spark plugs out??? Any chance if there still in it is hyd locking?? Have you done an ATF treatment one it so that the cylinder are well lubed and the rings are not sticking?? As for a new head gasket if the old one is metal you can bake it in an oven then use aluminum paint on the block head and gasket and stand a good chance of reusing it. Also any chance you can look in the plug holes for junk etc in the cylinders?? I have a D-17 when I got it had what looked like a mouse nest in 3 cylinders and that was fun to clean out
 
(quoted from post at 07:51:16 01/30/14)
(quoted from post at 06:40:30 01/30/14) Okay--I have a big old 4 cylinder gasoline engine that will turn over a bit using a pry bar on the fly wheel. I have checked the valves and removed the fan belt to stop any drag. This unit does have a hydraulic pump on the pto. When it moves with the pry bar, it sounds like it is hitting something in the engine. Any ideas would be appreciated?
Click to expand...

Okay--what you are saying make sense. I guess I am afraid of pulling the head because I probably can't get a new gasket.
This is a 1934 CAT gasoline engine.
Click to expand...

Call your local Cat dealer. You may be surprised at what's available.

Rick
 
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