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changing cam chain adjustor

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  • changing cam chain adjustor

    ok guys my cam chain adjustor is leaking and i was woundering how hard that is to change out with a new one or is the a fix to make it stop leaking
    79 yamaha xs1100f standard
    best 1/4 mile 13.282@99.40

  • #2
    They're very easy to change out. ( two bolts ) make sure that you pull the left engine case cover off and make sure the pointer is on "C" .
    S.R.Czekus

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    • #3
      Yeah. What he said. But position it before you touch that tensioner or there will be trouble. (really!)

      Originally posted by Czekus21
      They're very easy to change out. ( two bolts ) make sure that you pull the left engine case cover off and make sure the pointer is on "C" .
      Skids (Sid Hansen)

      Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

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      • #4
        These are notorious for that. A new gasket for the base, and some RTV in the end of it around the cap, and keep the one you have!



        Tod
        Try your hardest to be the kind of person your dog thinks you are.

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        • #5
          ok sounds like a plan i might have ot go order the gasket today and i will clean it up and reuse it and be ready to go thanks guys
          79 yamaha xs1100f standard
          best 1/4 mile 13.282@99.40

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          • #6
            If you are going to take the tensioner off anyway, now would be a good time to test for "chain stretch." Really what you would be doing is making sure that there is some adjustment available. There is more than just cam chain wear.

            1. Do all of this on the centerstand (my opinion, to keep everything centered.)

            2. Adjust the cam chain and then leave the tensioner locked.

            3. Remove the tensioner, and measure the distance at a couple of reference points, body outlet to the base of the rubber plunger.

            4. Release the plunger bolt and remeasure the distances.

            5. Cock the tensioner, reinstall (the threads in the engine are aluminum), release to hear the click, tesnion the adjustment bolt and keeper nut to spec. (carefully)

            The averaged differences between steps 4 and 3 are the adjustment that will be available, if you use a gasket of the same thickness. There is more than just cam chain for wear.

            Originally posted by bandet01
            ok sounds like a plan i might have ot go order the gasket today and i will clean it up and reuse it and be ready to go thanks guys
            Skids (Sid Hansen)

            Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

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            • #7
              One more thing to check for is that the tentioner plunger moves in and out freely when the lock screw is released. On mine I found that the shaft had expanded from over tightening of the lock screw. After dressing it with a file, it was fine.

              Also don't use RTV to seal anything with oil or gas in it. Use either Yamabond #4 or #5 instead. RTV will slowly break down in oil and quicky break down in gas...

              Geezer
              Hi my name is Tony and I'm a bikeoholic.

              The old gray biker ain't what he used to be.

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