FLTC Transmission Slips

Discussion in 'Transmission' started by bagger08, Oct 1, 2008.

  1. bagger08

    bagger08 Member

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    Hello,

    I have a 1985 FLTC Evoution with a 5speed Transmission.( This one has
    the clutch release lever on top of the transmission )
    If you acellerate it fifth gear it seems to slip.
    However if you back off it seems to be alright. Also noticed
    this as well in second gear.

    Service Infomation:

    1. changed transmission oil
    2. changed Primary case oil
    3. Clutch adjustment is out from the handlebar.

    Any help would be appreciated.

    Thanks Jerry
     
  2. glider

    glider Veteran Member

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    Have you adjusted the clutch plates? The handle bar adjustment is for cable lash.
     
  3. bagger08

    bagger08 Member

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    Thanks,
    No I have not done any other work was just doing some research today.
    Thanks for your input! This just started happening after about 500 miles
    of riding. When I had the primary cover off I noticed the pressure plates
    looked crusty.
    Thank Again
    Jerry
     
  4. glider

    glider Veteran Member

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    You shouldn't see anything crusty, just oily. Try a clutch adjustment and primary oil change. Your symptoms sound like either a clutch adjustment is needed or a replacement is due because of worn clutch plates.
     
  5. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    Jerry,

    As Glider mentioned, adjust the clutch as indicated in your factory service manual. You might get some help from here:

    Clutch Adjustment Video - Harley Davidson Community

    and here:

    Adjustment and Troubleshooting of Clutches. - Harley Davidson Community

    There are some additional posts that may help you. Please see this general section:

    Transmission,Clutch and Primary - Harley Davidson Community

    Also, you mentioned that you had just changed the fluids. Please identify what you used in each application, but especially the primary and tranny.

    TQ
     
  6. bagger08

    bagger08 Member

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    Thanks Again,
    Helpful tips, will advise when the repair is finished.
    Jerry

    Thanks TQ,

    Will post results on this one.

    Jerry
     
    Last edited by a moderator: Nov 7, 2008
  7. bagger08

    bagger08 Member

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    Harley Folks advise a clutch pack.
    Any detailed tips on how I have
    the manual. Will do the friction plates
    and the clutch plates, along with any
    other needs

    Thanks Jerry
     
  8. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    That model year probably has the diaphram pressure spring compressing the clutch plates. You will have to borrow or buy the compressor to get the snap ring off and then unload the diaphram spring in order to replace the clutch pack.

    DO NOT ATTEMPT TO BACKYARD THIS PART. GET ONE OF THE TOOLS DESIGNED TO COMPRESS THE DIAPHRAM SPRING.

    You might consider replacing the diaphram spring and the snap ring. While you have the cable slacked off, it is a good time to lube it. Check the cable keeper in the handle to make sure it does not have a groove worn in it. Replace if it does. Lube and reassemble the handle.

    You might want to consider pulling the rotor and inspecting the magnets and the stator while you have the primary open.

    Be sure to use Loctite red or equivalent on the compensator nut AND the clutch nut (lefty). When you get it all back together, adjust the clutch and the chain BEFORE putting the cap back on.

    When all buttoned up, refill the primary with a quart of Formula Plus or Spectro Primary. You should plan on adjusting the clutch within about 1,000 miles, replacing the fluid then or at least by 2,500 miles.

    TQ
     
  9. bagger08

    bagger08 Member

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    apologize for the lack of specifics.

    Have a late 84 which has some different parts ( Number of friction plates etc )
    a middle of the road year.

    It does not seem to have the springs you mentioned or is it my faulty translation.


    Thx.
     
  10. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    My mistake. I apologize if the info above does not fit your bike. Is yours a Shovel? Check this starting at page 147. Does that look like your clutch?

    Harley Davidson Community - HDTalking Downloads Page - Shovelhead 66-84 manual

    TQ