720 first reduction gear

cjrpr

Member
Working on a 720 gas. Putting the the 2 gears behind the first reduction gear housing. Does the gear closest to the ourside housing go on with the longer hub towards ourside housing? Had it all together and tractor has a howl driving up hill but is quiet going down hill. Tractor was transferring engine oil in transmission and found bad seal in main bearing housing. Now I'm questioning whether I put that gear in right or not. It doesn't say what way in my shop book. Thanks for any help.
 
The spline doesn't seem tapered. After taking it back apart. I tried the gear both ways and it slides on the spline shaft both ways. I'm thinking it was on right but not tottaly sure.
 
If it goes on both ways can you get a measurement and see if it sets in or out farther one way or the other ? then try and see how that matches up to the pulley gear. Wonder if you could assemble the pulley and clutch partially on the crank with the reduction cover off to see where it matches up best ?
 
Do you have a parts book? Take a close look at the exploded view. The service manual should have some pictures too.
 

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