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Thread: GS850 Cam Followers/Tappet Bucket Wonít Install

  1. #1
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    Default GS850 Cam Followers/Tappet Bucket Wonít Install

    This is driving me nuts! I had the head on my Ď82 GS850 reconditioned. The shop reseated all the valves, put in new seals, planed the gasket surfaces and returned the head to me with the springs and all set. Iím trying to install the cam followers/tappet bucket/valve spring bucket, whatever you want to call it, and they will not go in the guides. As of now, I have 3 of the 8 installed and probably spent 3 hrs getting those in. I tried freezing them in the freezer and even went and got some dry ice to try to get them as cold as possible. The ones that went in were warm by they time they actually went. I oiled them and greased them to try and help but nothing is working. What should I do?

  2. #2
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    Maybe put the head in the oven for a bit then try again before it cools?
    Roger

    1983 GS 850G
    2003 FJR 1300A



  3. #3
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    That may not the best idea ...
    if they don't fit at room temp you may never
    get them out when fitted hot and they
    stick.
    The buckets came off this head so
    will go back in.
    Oil the outside of the bucket lightly
    and twist-push the bucket in, aligning
    the bucket with the bore.
    If that does not work, check if the valve
    and springs are not obstructing the
    bucket going in.

    If they are, they are not seated right.
    Re-install valve and try again.
    Last edited by Rijko; 10-03-2021 at 04:12 PM.

  4. #4
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    Quote Originally Posted by Rijko View Post
    That may not the best idea ...
    if they don't fit cold you may never
    get them out when fitted hot and they
    stick.
    The buckets came off this head so
    will go back in.
    Oil the outside of the bucket lightly
    and twist-push the bucket in, aligning
    the bucket with the bore.
    If that does not work, check if the valve
    and springs are not obstructing the
    bucket going in.

    If they are, they are not seated right.
    Re-install valve and try again.
    Iím starting to think the valve springs arenít centered. How can I fix this?

  5. #5
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    Is it an option to go back to the shop
    and show them the issue ?
    With the right tool at hand they will
    re-install the valves properly and put on
    the buckets in minutes.

  6. #6
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    Quote Originally Posted by Rijko View Post
    Is it an option to go back to the shop
    and show them the issue ?
    With the right tool at hand they will
    re-install the valves properly and put on
    the buckets in minutes.
    Iíll have to pull the head off the bike again but this sounds like a good option. Pretty sure something the shop did is causing the issue.

  7. #7
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    When installed you should be able to rotate
    the buckets with your fingers.
    If not, and they are oiled, something is not ok.
    I would verify that on the buckets you installed.
    Last edited by Rijko; 10-03-2021 at 05:04 PM.

  8. #8
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    There is a VERY small clearance between the buckets and the head,
    the buckets have to be PERFECTLY aligned to get them in place.

  9. #9
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    As others have said. alignment is key to reinstalling them.
    It is possible for the outer valve springs to be slightly out of position on the retainers. I have seen this prevent the buckets re- entering.
    What can be done - if you can see down well enough - is ease the spring(s) into a more central position. A small flat blade screwdriver can be used for this but take care not to mark the follower bores.
    This is why when reconning a head, I do the clearances on the bench before putting it back on. Do it long enough, you eventually learn....

  10. #10
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    Maybe the workshop that did the head burred the follower bore with the valve spring compressor ?. Just a thought.
    My bikes 79 GS1000 1085 checked and approved by stator the GSR mascot and 77 GS750 with 850 top end, GS850g, and my eldest sons 78 GS550, youngest sons GS125. Project bike 79 GS1000N

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