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Farmall & IHC Tractors Discussion Forum
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IH 986 adjustments

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slim51015

08-14-2005 18:47:46




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Can anyone give me detailed instructions on a clutch
and torque adjustment?




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the tractor vet

08-15-2005 16:45:54




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 Re: IH 986 adjustments in reply to slim51015, 08-14-2005 18:47:46  
Like one said about and 1 1/2 on the clutch pedal on the trans brake have someone holdthe clutch pedal down after you remove the pin then push the clutch all the way down to the stop and see if the pin will slide in while holding back on the trans brake arm adjust till the pin will slide in then add 1 to 1 1/2 turns more let the clutch pedal up and install the pin now for the dump valve here again ya need someone to help , with the tractor in PARK and engine running at and ideal push the clutch pedal to the stop and back off the dump valve about four or five turns and start turning it in till the telltale lite goes out let the pedal up and add one more turn and lock down . The selector valve is suppose to be all the way down till the snap ring touches the nut when in high and all the way up when in low.

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Sheepdog

08-14-2005 20:36:55




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 Re: IH 986 adjustments in reply to slim51015, 08-14-2005 18:47:46  
Going by the seat of my pants here, so if someone has better info tell him. Take the left lite off of left corner of cab (black painted piece lite fits in). You'll see an adjustment bolt pointing forward. Has a screw driver slot in it. A 1/2 wrench will lossen clamp around bolt. With tractor shut off push in clutch pedal, 1" or 1 1/2" of free travel should be where clutch pedal touchs under side of dash. Not sure which way to turn adjusting bolt, you'll figure it out. Tighen clamp when done. Now go to the right side of center section and linkage is there for trany brake. The pin towrds the back has a hair pin clip in it. Take the round pin out of clevis. Have someone push in the clutch pedal to the floor, tractor running. Move arm that comes out of bottom cover same direction as clevis (That pushes brake pad against a gear in the trany). Adjust clevis so when you line up holes in clevis and arm, the clevis holes go 1/4 farther than the arm hole. That will give it a preload on the gear. When you shift these tractors, step in clutch only enough to disengage clutch, wait for tractor to stop moving, then step in more if gears still grinding. If you step in all the way right away it wears out trany brake pad faster. The TA has a chorme shaft right behind this clutch adjusting rod. On this chrome shaft is a snapring. When the TA lever is moved on the dash the valve will go up and down. The snap ring should just touch the MCV housing when down and have a measurment of 1 9/64" when up. Move cable adjustment on the fire wall to get these measurements. You asked for detail. Sorry if I bored someone. Good luck.

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Sheepdog

08-15-2005 10:32:35




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 Re: IH 986 adjustments in reply to Sheepdog, 08-14-2005 20:36:55  
I&T Manual a very good idea. You'll use it alot.



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slim51015

08-14-2005 22:12:26




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 Re: IH 986 adjustments in reply to Sheepdog, 08-14-2005 20:36:55  
You didnt bore me one bit. You are very helpful thanks for taking the time to explain it. Not everone would do that.



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K.B.-826

08-14-2005 20:35:11




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 Re: IH 986 adjustments in reply to slim51015, 08-14-2005 18:47:46  
It's too hard to explain without a diagram. Get yourself an I&T manual, best $25 you can spend on a tractor. You'll want to adjust the clutch pedal free travel, the dump valve, the transmission brake, the TA cable, and probably wouldn't be a bad idea to adjust the speed and range transmission linkages while your'e at it.



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slim51015

08-14-2005 22:13:40




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 Re: IH 986 adjustments in reply to K.B.-826, 08-14-2005 20:35:11  
Thanks for your help.



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