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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Case 1740 uniloader clutches

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IA Roy

10-12-2017 09:02:42




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Hopefully correct forum. Posted on tractor talk and no response. Son bought this as a basket case. Starting good, fixed a nimber of small issues Now it appears clutches need adjusted or replaced. Is there adjustment designed in? Can they be rebuilt. Evidently 20 friction plates. Pretty expensive. Any and all replies appreciated.




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Case Nutty 1660

10-14-2017 04:55:23




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 Re: Case 1740 uniloader clutches in reply to IA Roy, 10-12-2017 09:02:42  
you need a special plate to adjust the clutches on them, they can be made also, you have to hold the ends in place while adjusting so the special plate has hand holes in it, great machines but when running do Not slip the drives, slow down the variable to adjust speed, a factory service manual is your best friend here
cnt



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Chris in SK

10-12-2017 13:05:53




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 Re: Case 1740 uniloader clutches in reply to IA Roy, 10-12-2017 09:02:42  
Hello Roy, I also just picked up a total basket case 1740. I can't really help you much with clutch adjustment. I'm probably going to try and order the service manual for this machine. I believe basic adjustment is with the two large nuts you can see between the wheels. If its like a bobcat, the front clutch is for reverse and the rear is for forward on each side. To fully access the clutches you will need to remove the side plates. My machine came with original parts book, but you can look up the parts diagrams on Case parts web site. Put '1700' in the model number search field. According to the parts book, early machines had Formsprag clutch's and from SN 9816818 on they were fitted with Stearns clutch's (noted by a yellow paint dot).
Messicks list the Case parts and pricing, and Loader Parts Source also has the clutch discs but they are both pretty pricey if you need all 20 discs! I'm thinking if my clutches need re building to use the best of the old discs to re build the reverse clutches and just use new discs in the forward clutches. That's a bit of a way off for me yet. I have to put the engine back in first!
Chris

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jean claude marleau

10-15-2017 09:26:47




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 Re: Case 1740 uniloader clutches in reply to Chris in SK, 10-12-2017 13:05:53  
I do have a service manual for sale for your 1740 uni loader my e mail is jcmarleau@aol.com



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Chris in SK

10-12-2017 14:27:13




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 Re: Case 1740 uniloader clutches in reply to Chris in SK, 10-12-2017 13:05:53  
Roy, I just had a look at my 1740 and at the parts book. If you look at the parts diagrams on CNH or Messicks web sites you can see the clutches. It looks like behind the two big nuts on the side covers (one for each clutch) , there is a seal, then a thrust bearing and some shims, and then a larger ring called the 'adjusting nut' in the parts book. Looks like it may need a spanner or punch or special tool. It looks like the Formsprag clutch has two set screws that lock this adjuster nut and the Stearns clutch has one locking screw. Not sure if you have to remove the side covers to access this adjuster nut or not. Hopefully mEL from the Case page or one of the other guys that know these machines will confirm.

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IA Roy

10-12-2017 20:23:26




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 Re: Case 1740 uniloader clutches in reply to Chris in SK, 10-12-2017 14:27:13  
My son feels lucky. He found a broken drive chain on the side that quit. It was the first stage reduction #40 chain. He has downloaded the parts manual. Thanks for the replies



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