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  • Genuine AMF clutch chattering

    Why do some of my clutches chatter. Doesnt matter what worm I use. About 2 weeks after lubing they make noise. It doesnt effect indexing.

    Who has the cure?

    Jerry

  • #2
    Re: Genuine AMF clutch chattering

    What about the friction discs? I had some Vantage ones that were doing that. Put AMF in and the chatter stopped. Maybe they weren't flat.
    Or maybe I put 'em together right the 2nd time. [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img]

    Pete

    Comment


    • #3
      Re: Genuine AMF clutch chattering

      Bent Drive plate. Throw the chattering drive plate on a machine that has all new components and within a year it will start chattering on that machine also.

      Comment


      • #4
        Re: Genuine AMF clutch chattering

        Thanks JJ !

        King

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        • #5
          Re: Genuine AMF clutch chattering

          I can't say I'm 100% right on this one and other things could cause it. But I do know the inner hub of the drive plate is a gear that mates to the worm. If the pitch of the drive plate gear gets bent from the wrong stator being put on or from improper instalation of the clutch assy it wont mesh with the worm properly.

          Comment


          • #6
            Re: Genuine AMF clutch chattering

            When we had this happen when I was a boy and our center had a maintaince contract with a man named Gary Wycoff, not only the best AMF mechanic I haveever seen, but also a great man). He would take off the chattering disk and score it with some of the lowest grit sandpaper I have ever seen. This seemed to work most of the time.

            Now we have Super clutches where I work, I guess they are called that because you become "Super" at taking them apart and cleaning the washers and replacing parts in a hurry!

            He always told me a good mechanic is also a good bender.

            Pat [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img]

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            • #7
              Re: Genuine AMF clutch chattering

              Quote:]Originally posted by poplarpetey:
              Or maybe I put 'em together right the 2nd time. [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img] [/QUOTE]

              Our motto: "We do it nice, 'cuz we do it twice!"

              Clutch 'chatter' is caused by polished spots on either the friction ring or the plates (Usually the outer one)... so lightly sanding the surfaces of both will cure it, as long as the ring and plates aren't warped.

              Clutch 'squeak' or 'squeal' is caused by a dry oilite pinion sleeve rubbing against the thrust washer, and can be cured by spraying a very small quantity of WD-40 (or similar light oil) into the groove between the thrust washer and the pinion sleeve while it is running. A dry pinion sleeve can also cause chattering.
              <span style="font-style: italic">Educatio est omnium efficacissima forma rebellionis</span>

              Comment


              • #8
                Re: Genuine AMF clutch chattering

                Clutch Chatter... Only caused by one thing. Take your dizzy clutch that chatters off the dizzy. Take the pinion gear in one hand and the clutch plate on the other. You will notic that the pinion gear has eaten away at the clutch plate causing "slip" That is where the chatter comes from. AMF and Vantage do make clutch plates with a platic retainer that holds the pinion gear stiffly in place. They work great! In the event that you recieve them and they slip due to poor craftsmanship, take some JD-Weld and put some in there. Have one like that thats been running for 4 years streight.

                Deadwood
                Well thats just like your opinion man...

                Comment


                • #9
                  Re: Genuine AMF clutch chattering

                  I pour ball plug aroung my pinion gears. Holds them tight forever. I do this right when they are new, but I have also done this to ones that have some play in them and they are good as new again.
                  Give me a hammer and some duct tape and I can fix it!

                  Comment


                  • #10
                    Re: Genuine AMF clutch chattering

                    [ February 10, 2002: Message edited by: pitmonkey ]

                    Comment


                    • #11
                      Re: Genuine AMF clutch chattering

                      Clutch Chattering is from the pinion gear not being secured on or inside the clutch plate.
                      Well thats just like your opinion man...

                      Comment


                      • #12
                        Re: Genuine AMF clutch chattering

                        I know that enlarged notches in the clutch plate are usually associated with clutch chatter but I always thought that they were caused by the chatter, not the cause of the chatter. I've seen chatter in tight but dirty or glazed clutches.

                        Dutch

                        Comment


                        • #13
                          Re: Genuine AMF clutch chattering

                          Earplugs for everybody!

                          Comment


                          • #14
                            Re: Genuine AMF clutch chattering

                            You could have a solid 1 piece pinion/plate assembly and still get chatter from the front-to-back play in the trip rod.
                            The basic cause is nylon dust from the worm/disk or 'paint dust' off a new plate melting and then hardening on the plate where the disk slides. This causes the clutch to slip-grab-slip-grag with just the right timing to set up a harmonic frequency that matches with the gap in the teeth of the pinion and indexing cam. Most of the time when you first here the chatter from the gears it will be only at the #1 position. This is because the indexing cam is applying a small force back onto the pinion and any resonance set up by the clutch will easilly transfer to the cam and it will rattle back and forth. At the other dist positions there is quite a bit more force between the gear teeth so its harder for it to go into a chatter.

                            BTW Does anybody know why the drive plate always grooves out the worm in the same spot. And is the opening of the drive plate really round? I havent looked into that yet and was wondering.

                            Comment


                            • #15
                              Re: Genuine AMF clutch chattering

                              Ive never seen or heard what your trying to describe JJ. the noise from the trip rod is from slop in the rear part by the flag. If you didnt install the Fiber washer moving back and forth when the dizzy index's. But i stand by what i say.... Quote:] Clutch Chatter... Only caused by one thing. Take your dizzy clutch that chatters off the dizzy. Take the pinion gear in one hand and the clutch plate on the other. You will notic that the pinion gear has eaten away at the clutch plate causing "slip" That is where the chatter comes from. AMF and Vantage do make clutch plates with a platic retainer that holds the pinion gear stiffly in place. [/QUOTE]

                              Deadwood
                              Well thats just like your opinion man...

                              Comment

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