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Need Help With Jacobsen Trans


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#1 Horvik OFFLINE  

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Posted September 01, 2012 - 06:04 PM

Hey;

My four speed UT 34001 is tough to get into gear while running. Can a bad bearing on that rear idler be what's causing this? The belt stops with the foot clutch in.

Thanks

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  • UT 34001.jpg


#2 KennyP ONLINE  

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Posted September 02, 2012 - 04:33 AM

I haven't had a gear drive, so am not sure what the problem could be. Is it full of 90W gear oil?

#3 skyrydr2 ONLINE  

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Posted September 02, 2012 - 06:41 AM

Is it grinding or just hard to move the lever into hear with no grinding? If it grinds belt is not stopping fully,if it is hard to shift with out any grinding,then it may have a bent shift fork shaft of bad forks . The latter means removal of the trans axle to repair.

#4 olcowhand ONLINE  

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Posted September 02, 2012 - 08:52 AM

The belt may be stopped, but still have drag on it. If it does still have drag, it will be hard to shift.

#5 Horvik OFFLINE  

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Posted September 02, 2012 - 08:40 PM

Hey;

If a belt has drag how is it repaired? Do I have to replace the belt then?

Thaks

The belt may be stopped, but still have drag on it. If it does still have drag, it will be hard to shift.



#6 Horvik OFFLINE  

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Posted September 06, 2012 - 11:51 AM

Is it grinding or just hard to move the lever into hear with no grinding? If it grinds belt is not stopping fully,if it is hard to shift with out any grinding,then it may have a bent shift fork shaft of bad forks . The latter means removal of the trans axle to repair.



Hey;

Well, when the tractor is not running, the 4 speed shifts real good and firm with no hangups. So , the problem with getting it in gear is when its running. Seems like the belt has a hard time stopping with the clutch all the way in. Can a bad belt do this?

All the best

#7 skyrydr2 ONLINE  

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Posted September 06, 2012 - 12:20 PM

For sure! The belt and all the belt keepers play a role in stopping the belt from turning it must loop off the drive pulley when fully clutched.

#8 Horvik OFFLINE  

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Posted September 06, 2012 - 07:28 PM

skyrydr2;

Can this bad belt also make a loud noise while the tractor is in motion?

I am very excited about raising this tractor from the dead. I also have the 2 stage 42" snowblower to go with it.

Sure appreciate your help.

#9 KennyP ONLINE  

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Posted September 06, 2012 - 09:16 PM

That loud noise could be a bad bearing in a pulley.

#10 skyrydr2 ONLINE  

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Posted September 07, 2012 - 03:58 AM

It could make the pedal jump up and down making a banging noise , also if the idler/tensioner pulley bearing is bad that would make all kinds of noise from a grumbling rumble to a high pitched squealing.
So, when you replace the belt check all you belt keepers and the idler pulley bearing, also check the drive and driven pulleys for rust and wear.

#11 KennyP ONLINE  

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Posted September 07, 2012 - 04:43 AM

Just looked through the parts manual and found a grease zerk on an angle drive under the tractor. That may need attention. Is the rear axle full of lube?
34001a.jpg

After looking at the parts list, doesn't look like it would take much to make this a hydro. Or at least a shaft driven gear drive!




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