proper way to adjust clutch

Discussion in 'Trucks [ Eighteen Wheelers ]' started by gunner76, Jan 16, 2012.

  1. gunner76

    gunner76 Medium Load Member

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    My clutch has right at 1" of freeplay and I want to try adjusting it myself instead of paying someone else to do it. I've been told two different ways of doing it and want to know which way is best.

    Both people told me to pop off the inspection cover and bump the engine until the bolt and locking tab are facing down. Then remove the bolt/tab, hold the pedal all the way to the floor and turn the adjustment ring until you get between 1.5"-2" of freeplay.

    where the two people differ is the one says that as long as you get the pedal freeplay in the 1.5-2" range that is all you need to do as long as the clutch brake is working properly. The other guy says you also need to measure the distance between the clutch plate and I think the throwout bearing(he said to take a 1/2" socket and it should just fit in between the two) and also measure the distance between the throwout bearing and clutch fork(he said 1/8" is needed).
     
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  3. bender

    bender Road Train Member

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    Since I know you have a new clutch, if the clutch brake is working good, no need to make an internal adjustment. Adjust the linkage for proper free travel, verify you still have good clutch brake and you're done.
     
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  4. truckmechanic

    truckmechanic Medium Load Member

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    As long as the clutch brake works good you can adjust the clutch with the adjusted on the clutch depending on which clutch you have it will be an adjusted you push in and rotate at the same time or will have a plate around the adjusted also the old style you had to use an adjuster but haven't seen one in a while adjust it slowly towards the driver's side while someone is push
    ing the clutch in make sure that you lock the adjusted if not you will unwind the clutch you want an 1" to 2" pretty easy once you figure it out
     
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  5. Scrapper

    Scrapper Light Load Member

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    http://www.roadranger.com/ecm/idcplg?IdcService=GET_FILE&dID=281970

    I found this on this site the other day. Do not remember where or who posted it. But towards the end it shows how to properly adjust. This if from the Eaton Fuller Website. Its long...but very imformative. I advise downloading then watching as its a large file. Hope it helps. Sometimes pictures and video can be pretty handy.
     
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  6. Heavyd

    Heavyd Road Train Member

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    I think Mr Haney posted a real good video not too long ago. It may be the say one you have, but they both did a real good job of explaining how it is done.
     
  7. gunner76

    gunner76 Medium Load Member

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    another question. I went to adjust the clutch and noticed it has the quick adjust setup like in the video I watched, but from the looks of things there is a plate held in with one of the bolts that holds the quick adjust assembly to the clutch housing. Do I need to remove the side bolt that holds this plate on? As it is right now there isn't enough of the bolt head sticking out above the plate to get a socket on.
     
  8. Heavyd

    Heavyd Road Train Member

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    If it is the one I am thinking of, that little plate has a hex hole in it locking the adjuster in place. Then yes, remove the bolt to remove the locking plate. I put the bolt back in while turning the adjuster so it doesn't pop out or anything. Actually, I haven't seen one of these types in a long time. What kinda of clutch is it?
     
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  9. pup

    pup Light Load Member

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    You always set the gap between the release brg & clutch brake 1st. Use the internal adjuster & set the gap to 1/2 inch. As the clutch wears the gap increases & you loose free pedal. Set the gap & the free pedal will return. After the linkage is set, it only needs adjustment to compensate for wear within the linkage itself.
     
  10. gunner76

    gunner76 Medium Load Member

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    I looked closer and you're right, the plate has a hex hole to lock the adjuster nut in place. The clutch is a Ag Parts reman(junk, I know now)that was just installed 10k ago.

    i was going to remove the plate and adjust it, but I had a guy tell me it might be a self adjusting clutch since it was set up that way, so I didn't mess with it. He told me that to adjust a self adjusting clutch push the clutch in/out really fast 10times so I did that and did gain 1/2" of free play in the pedal. I've never seen a self adjusting clutch, but I would think it wouldn't have the quick adjuster assembly on it. I probably should just stop by my normal mechanic and have him look at it.
     
  11. bender

    bender Road Train Member

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    Solo clutches (single disc) are self adjusting and they made an attempt with double disc self adjusters but failed and went back to manual adjust. There may be some auto adjust double disc out there but I never see them anymore. If you have the lock plate over the adjuster type then it's manual adjust. Be sure to reinstall bolt in adjuster after lock plate is removed or adjuster will break while adjusting.
     
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