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'74 112 Drive Belt Issues


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#1 dropped82 ONLINE  

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Posted March 21, 2013 - 07:36 PM

Well my 112's variator came out of adjustment. I figured one of my kids messed with it while in the garage with me. I adjusted it and went for a drive. Everything was normal till I started uphill. Belts were slipping and the tractor stopped. Dropped a gear it started moving. It slipped some more so I pulled back on the variator till I ran out of notches. The belts have less than 20 hours on them. I replaced the variator spring and secondary spring. Adjusted the variator again but still have slipping. Is there an adjustment I'm missing? It seems to take a second to go when I release the pedal but always had good power. Any suggestions? I'm at a loss and this is my snow plow and tilling tractor. We are expecting a late snow this weekend so I need to get her moving. Thanks.

Eric



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#2 jd.rasentrac ONLINE  

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Posted March 22, 2013 - 01:03 AM

Hi Eric,

 

can't answer your question (springs are ok, so what will be) but I can send you the chapter (I'll look which it is) from the service manual - but: it's a round fender.

 

So if you are interested, plz write me a pm. And now I go to work, wish you all a nice day  :thumbs: 


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#3 JDBrian OFFLINE  

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Posted March 22, 2013 - 06:27 AM

Any chance the clutch linkage isn't working properly and is not giving you full belt tension. The fact that it takes a second to engage may be a clue.


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#4 dropped82 ONLINE  

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Posted March 22, 2013 - 06:40 AM

I'm thinking of pulling the variator out and cleaning and greasing all the pivot points. I'm at a loss on anything else. All new springs and the belts were replaced before last winter started. If disassembly doesn't work then I guess I will invest in some new belts. It seems the slipping is happening up on the engine pulley but there are no leaks. Everything is dry. Any idea on how much slipping these belts can take before needing replaced? It seems my primary belt doesn't have the tension it should. Thanks again

Eric

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#5 Trav1s OFFLINE  

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Posted March 22, 2013 - 07:23 AM

Have you lubbed the slide inside the actual variator?  I bought a can of spray silicone in a can from Napa and used that to lube the center pulley.  


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#6 dropped82 ONLINE  

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Posted March 22, 2013 - 02:17 PM

When i first went thru the tractor I lubed it. The variator didnt take much to get it free and i have also removed the belts and checked it. I will get a chance tonight to pull the entire assembly out. The variator still works as it should. It just seems the primary belt has no good tension.

Eric

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#7 Trav1s OFFLINE  

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Posted March 22, 2013 - 02:28 PM

Ok, primary belt has no tension.  Which one is the primary?  The belt from the crank to clutch/variator or variator to axle?


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#8 dropped82 ONLINE  

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Posted March 22, 2013 - 02:53 PM

Crank to clutch. It has some but doesn't seem enough.

Eric

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#9 Trav1s OFFLINE  

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Posted March 22, 2013 - 02:56 PM

I will grab my service manual for the RF 110 and get back to you.


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#10 Trav1s OFFLINE  

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Posted March 22, 2013 - 05:12 PM

Not sure of this will help since it is for the rf tractors.

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#11 dropped82 ONLINE  

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Posted March 22, 2013 - 06:12 PM

Im heading to start working on it. I will check back here in a bit. Wish me luck!

Eric



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#12 dropped82 ONLINE  

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Posted March 22, 2013 - 07:56 PM

Alright, this is where I'm at so far. I'm losing motion somewhere since there is no tension and slow engage. So my first check was to see how well the variator moved with no tension from anything. It was hard to move. Kinda like a rusty bearing. So i greased it with no change. Then removed it. It looks like it has a bushing in it for the bolt to go thru. That bushing is froze and the bolt was dry. I have to stop tonight since I have to work some OT tomorrow at 4 am. I will reassemble tomorrow with high hopes and lots of grease. I also have to clean that bolt up. Luckily there is no wear on the bolt or bushing. Will update tomorrow afternoon. The weather now has said 6 to 10 inches coming Sunday and this is my plowing tractor. So much for the groundhog not seeing his shadow!

Eric

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#13 dropped82 ONLINE  

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Posted March 23, 2013 - 12:53 PM

Well no luck today. Belts still slipping on the engine pulley. Its getting worse. So I guess by now I need to replace the belts. That's the only thing left to do on the drive system. Variator is good and the springs are new so I got nothing left. Maybe I can get away with just replacing the primary since it was the only one slipping of the 2.

Eric

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#14 Trav1s OFFLINE  

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Posted March 23, 2013 - 05:01 PM

Swapping the primary belt is a good place to start but does not get to the "why" things changed...


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#15 dropped82 ONLINE  

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Posted March 23, 2013 - 06:36 PM

I think my variator spring was going. As far as i know it was the original. I think me working the tractor this winter and late last summer may have did it in which took the belts eventually. At least I hope. Thanks.

Eric

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