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1978 C-141 Difficulty Climbing Hill


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#1 jhn9840 ONLINE  

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Posted April 04, 2014 - 09:43 AM

My neighbor has the above tractor. There is one section of the yard that is pretty steep. The tractor is struggling to make it to the top. It has never done this before and it is running fine otherwise in the rest of the yard, Hoping to go take a look at it this weekend for him. Any suggestions or thoughts on what would be causing this are greatly appreciated.

 

It has a K-321as spec60322d according to the book it has a 103916 5 speed manual transmission.

 

jhn9840

John



#2 GlenPettit OFFLINE  

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Posted April 04, 2014 - 10:17 AM

First, suspect a loose Drive belt, slipping slightly when under a load like that going up a hill.

The belt going to the rear transmission is very low and easily gets dirty (grass juice), it becomes glazed (like a hard coating) and looses friction between the inside of the pulleys and the belt.  

•  Clean the belt & pulleys to dissolve and remove that glaze.

•  Increase tension on the rear idler (adjust the spring tighter).

•  If the belt is old, (15-20 years), it probably has stretched permanently and needs replacing  (Drive Belt #7478, 81.95" long, best to use actual TORO/Wheel Horse Belt).

 

(5-speed transmissions were only in the A-series models in the 70's)


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#3 lyall ONLINE  

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Posted April 04, 2014 - 10:18 AM

check the belt to the transalxe

how old is the belt?

you can try belt dressing on the belt to see if that helps


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#4 JDBrian OFFLINE  

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Posted April 04, 2014 - 11:05 AM

The belt is the obvious first choice. Once you get past that and the clutch/ belt tensioning system it could be something stripping out in the drivetrain like an axle key for instance or a loose pulley. Hopefully the simple solution will be the right one.


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#5 KC9KAS OFFLINE  

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Posted April 04, 2014 - 04:43 PM

I wouldn't use any belt dressing, as the belt needs to "slip" when you clutch to stop/change gears.

A TORO belt (rather pricey) is your best bet.

Make sure the pulley on transmission isn't slipping on it's input shaft.


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#6 KC9KAS OFFLINE  

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Posted April 05, 2014 - 04:29 PM

jhn9840, please let us know what you had to do to get the GT repaired/operating properly.

This helps us diagnose problems from afar.


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#7 jhn9840 ONLINE  

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Posted April 06, 2014 - 09:18 AM

I will let you know the outcome for sure. I appreciate the timely advise. Now I know where to start looking. Was hoping to look at it this weekend but now that may not happen until the end of this week. Still about another 10 to 14 days away from the first cuts around this area. Been a cold spring so far.

jhn9840
John

#8 jhn9840 ONLINE  

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Posted April 19, 2014 - 08:23 PM

Sorry it took me awhile to get back to you all. Got busy at work. Anyhow the idle pully is shot. Got a new one ordered along with a new V belt. Wanted to thank you guys for your replies. Got me pointed in the direction I needed to go. GlenPettit the part number you gave me was the right one. He bought the tractor new in 78 and doesn't remember ever changing the belt before.

jhn9840
John




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