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Tractor Talk Discussion Forum

stripped teeth on 801 hydraulic gears

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Hal Kravcik

06-01-2004 15:23:40




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My name is Hal Kravcik. I live in NW wisconsin and own a ford 801d select o speed tractor,
1961 (871d - <>144925<>). A few years back it stopped running. I
was on it when it quit. It made a winding down sound like a steele
baseball card on a bike spoke. I just got motivated and took the front
end apart cause I always assumed it was the timing chain or gear..I dont
know what this engine has. When I took off the radiator I gave the main
pulley a turn with a wrench and heard the same wind down sound coming
from under the hydraulic pump.(located on the right side (sitting on the tractor) on the engine block).Sure enough when I took it off the gear inside the block (not the pump itself) had the teeth all
stripped off. It doesnt move when the main pullley is turned. Do I have to split the tractor?..God I hope not. I
must do the work myself. I'm not even sure why the engine wont turn over
because of that one gear. Any help would be GREATLY appreciated.

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Geo in SD

06-02-2004 05:58:49




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 Re: stripped teeth on 801 hydraulic gears in reply to Hal Kravcik, 06-01-2004 15:23:40  
I have seen this happen once before and don't know for sure why the gear stripped. Is the pump locked up? That gear that drives the pump gear is splined on to the camshaft. It is possible the spline is torn out of the pump drive gear. Otherwise, if the gear won't turn with the camshaft, there is probably a problem up front also, teeth busted out of the timing gear on the camshaft. The crankshaft gear is steel, I think, so it would be the cam gear busted. The other thing it could be is the camshaft is twisted off. Can you turn the pump drive gear with a bar or screwdriver? Unfortunately, you will have to split the tractor to replace the drive gear. You say the engine won't turn over? If the timing gears are broken or bound up, or the camshaft is broken, this could be the result.

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Hal

06-03-2004 19:07:19




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 Re: Re: stripped teeth on 801 hydraulic gears in reply to Geo in SD, 06-02-2004 05:58:49  
Thanks for the reply Geo... do you know if there is a shop manual that would show me how to split and replace the gears?
Hal



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