Motor repair question TO-35 update!

maxwell99

Well-known Member
I am still trying to determine the cause of a ticking noise in the motor of my 1957 TO-35 Fergy gas tractor.

an old farm tractor mech: said that you can have a loose rod bearing and yet the motor will still hold good oil pressure. I would have thought that if you had a loose rod bearing then you would have low oil pressure. I am running shell rotella 15w40 oil so that might be the reason for my motor having higher oil pressure if it has a loose rod bearing.

He also said to pull back the rubber boot on each spark plug and short out that plug, if you have a loose rod bearing the tic noise should get louder.

at least I have a few things to try.

will change oil: install new oil filter and 30 weight oil, at least that weight oil will not mask any motor tic.

any other suggestions to try is appreciated.

the governor is working fine,

tic noise appears to be coming from the front of the motor and low down toward the crankshaft.
 
Sometimes there are washers and spacers to line the pulley up with the water pump and generator, and these could be rattling, or a piece of crud bound between two, or something stuck on the pulley, fanbelt, where you can hear it but just can't see it???
 
Does the sound change as the engine warms up?
You might also try removing the fan belt and briefly starting the engine to see if the noise stops. Don't run it for very long this way but this would eliminate any water pump/fan/generator noises.

Straight 30wt oil will be thicker at cold startup than 15w40 oil so it may actually make the noise quieter when you first start it if it is a bearing.

Dan
 
May have found the problem.
Farmer don came over this morning and looked at the tractor. He owns a to - 30

Farmer don found the crankshaft pulley loose, the large bolt holding it on was loose.
So I took the bolt off cleaned the threads and coated them with locktight and reinstalled.

Motor appears to run quite now, so I hope I am good to go. Sometimes it just takes another set of eyes to look at a problem before you start tearing into a motor that idles at 400 rpm.
 

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