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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Re: JD 350 crawler brake/steering clutch adjustment

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Roy Suomi

02-06-2014 06:58:02

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The clutch adjustment sometimes can't be done as the manual states.. If you look down inside the top cover , with a good flashlight you will be able to see the throw-out bearing move inward and outward until it contacts the pressure plate fingers.. That is the free-play .. I wouldn't use the lever free-play as that isn't correct due to pins and levers being worn , giving a false sense of adjustment.. An eighth to three sixteenths of an inch of free-play at the bearing contacting the levers is about right.. then adjust the 5/16 bolt at the top for the brake band "timing".. The engine should barely lug down at all when you pull the lever and have the band contact the drum ..If it does , loosen the 5/16 bolt adjustment so the brake band comes on a little later in the lever stroke.. Also , check the "knuckles" where the 5/16" bolt is .. One part should be anchored on the shaft and the other should be able to turn on the shaft in order for it to operate correctly..

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02-06-2014 10:21:23

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 Re: JD 350 crawler brake/steering clutch adjustment in reply to Roy Suomi, 02-06-2014 06:58:02  
Just adding to what you already stated. No linkage adjustment of the brake band should be done until its initial "size" adjustment is done. That the turning the nut on the band tight and then backing off one full turn. Then the clutch to brake-grap timing tweaks on the linkage should be done.

Also since he mentioned the right side - it would behoove him to hold the foot brake pedal down tight and see if he can still move the right steering lever freely. They often get rusted and fused together.

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wally b

02-06-2014 10:37:36

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 Re: JD 350 crawler brake/steering clutch adjustment in reply to jdemaris, 02-06-2014 10:21:23  
Just to clarify:

There is the clutch play adjustment which is towards the inside of the housing--you pull back a sliding cover to remove the shaft to adjust. There is a 1/2 inch brake adjustment with a 1/2 inch set nut, this tells the brake when to start tightening, so if I loosen this the brake will apply later after the clutch disengages. The third adjustment is the brake band adjustment which is a 3/4 head to the outside and it should be tightened down and then backed off 1 full turn. I would guess that if I loosened this the brake would apply later.


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02-06-2014 18:53:43

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 Re: JD 350 crawler brake/steering clutch adjustment in reply to wally b, 02-06-2014 10:37:36  
Yes but the 3rd adjustment with the nut that takes a 3/4" wrench is the one you do first, not last.

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