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Dauntless Clutch Job - Need Pilot Bearing

Discussion in 'Early CJ5 and CJ6 Tech' started by Hellion, Aug 16, 2017.

  1. Aug 16, 2017
    Hellion

    Hellion Regurgitated

    Eastern TN
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    Dec 25, 2016
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    I have the LuK clutch kit from RockAuto, #01029 but it includes no pilot bushing/bearing (silly me :oops:). Not knowing what is on there now nor what kind is needed, should I order an assortment of the varied pilot bearings listed at the same site? That's not a whole lot of money...

    1. DORMAN 690014 Inside Dia: 0.593"; Outside Dia.: 1.093"; Length: .750" 1.093 In. O.D.
    2. OMIX-ADA 1691009
    3. NATIONAL PB656HD Bore=0.592", Outer Diameter=1.096", Width=0.755"
    4. TIMKEN PB656HD
    5. M-PACT BA381

    The costliest one, M-PACT BA381, at $5.68 looks like it has roller bearings on the ID. Might this be the Cadillac of all the bearings?

    OR, is this a situation where I should drop the trans and TC and measure what I have and order accordingly? If I did order a selection, 1, 3 and 5 would be what I'd choose because the dimensions are listed, they're different and #5 is the spiffy one.

    Many thanks!


    1968 CJ5 Dauntless V6, T14, TC18....
     
  2. Aug 16, 2017
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
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    You may not need one. You have to drop it all down to get to the clutch anyways and the clutch kit usually comes with an alignment tool which will tell you how good the fit is for the pilot bearing.
     
  3. Aug 16, 2017
    Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Maryland
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    As above and skip anything Omix and doubtful you need a roller bearing pilot.
     
  4. Aug 16, 2017
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    I have used both the national and the dorman. My biggest hassle was getting the bushing into the flywheel/crank without damaging it - it is a very tight fit even after letting it sit in the freezer for a few days. Additionally, the T14 input shaft had a pretty tight fit into the bushing and it made installing the transmission that much more work. So I got the dorman on the second go around as it has just a bit bigger inside diameter and a bit smaller outside diameter. The difference was probably imperceptible, but anything to help a bit.
     
    Last edited: Aug 16, 2017
  5. Aug 16, 2017
    Hellion

    Hellion Regurgitated

    Eastern TN
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    Well dadgum. I am confused now.

    I don't/may not need one....
     
  6. Aug 17, 2017
    Hellion

    Hellion Regurgitated

    Eastern TN
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  7. Aug 17, 2017
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
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    Sorry to confuse you. Yes a pilot bushing/bearing is required but what I meant to say is your existing bushing may not be worn so bad as to need replacing.
     
    Hellion likes this.
  8. Aug 17, 2017
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Some applications use roller bearings, some applications use Oilite (sintered bronze impregnated with oil). I suggest you remove the old bearing and match what you have. It's probably an Oilite bearing.

    However, the most reliable way to buy such parts if you don't have the old part in hand is to find the factory part number and cross that to whatever is offered by the aftermarket suppliers. Sorry, I don't have a parts book that covers a '68 CJ.

    I expect the Dorman, National and Timken parts are the same. The Omix is probably the Dorman part resold under the Omix name. On principle, I don't buy Omix stuff when I have the option. The Timken has the same number as the National, so it's probably the same part. National and Timken are name brands; Dorman is usually import stuff and likely ok.

    Note that the listings of aftermarket parts suppliers for Jeeps of this age are rife with errors, so caveat emptor.
     
    Last edited: Aug 17, 2017
    Hellion likes this.
  9. Aug 23, 2017
    jeep2003

    jeep2003 Well-Known Member

    Upstate NY
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    #3 is what i used. same as small block chevy. dont use a bearing when it dries out it'll kill your input shaft
     
  10. Aug 23, 2017
    supertrooper

    supertrooper Member

    moreno valley, ca
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    I have an extra bronze pilot bearing with the same dimensions as the dorman part you listed. Its your if you want it.
     
  11. Nov 9, 2020
    shaun

    shaun Member

    Lebanon, Ohio
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    Still got the bushing? I think I may need to replace my pilot bushing. I have posts under Novak clutch. I can not engage or disengage my clutch. I started it in 1st and it started to move forward but then I couldn’t shift it out of 1st. I had to roll it back a bit to disengage the shifter
    Is there a pilot bushing I should use over any other
    I have a 225 odd fire with a T90 transmission
     
    Last edited: Nov 9, 2020
  12. Nov 9, 2020
    oldtime

    oldtime oldtime

    St. Charles,...
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    I have z couple pilot bushings available.
    .670 or .750 available.
    I can post in FS column if you want.
     
  13. Nov 9, 2020
    shaun

    shaun Member

    Lebanon, Ohio
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    Will those fit my setup? It seems minimal. T90 to a 225 oddfire.
     
  14. Nov 9, 2020
    oldtime

    oldtime oldtime

    St. Charles,...
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    T90A or C all use .590 i.d. pilot.
    But you have a T90J.
    .750” i.d. is too big for T90J pilot.
    The .750 “ fits T15 transmissions and some T18’s
    I think T90J is . 670 i.d.
    Can someone verify the T90 J pilot diameter ?
     
  15. Nov 9, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    According to my FSM for the willys wagon with the t90j - pilot bushing inner diameter is 0.628"
    [​IMG]
     
  16. Nov 9, 2020
    oldtime

    oldtime oldtime

    St. Charles,...
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    Thanks FinoCj ,
    That’s surely the number Shaun needs for his pilot.
     
  17. Nov 16, 2020
    shaun

    shaun Member

    Lebanon, Ohio
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    So .628 is the bushing I need. Don’t know what super trooper has. But I think oldtime you had one. Also I thought I seen that it had a T90A ok the Transmission. Have to verify. I did replace the top shift cover with a T90C but I will confirm it if I can.
     
  18. Nov 16, 2020
    Arnold Layne

    Arnold Layne Member

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    Get a quality bronze bushing for a 350 chevy and have any machine shop open it up to .628. Seems like I had to do this with a 225 and a Herm's hybrid t86-t90?
     
  19. Nov 16, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    I think what oldtime was getting at with the t90j is that for the typical t90 to 225v6 conversion (the t90 was never natively mated to the 225v6), the t90 would usually get the longer input shaft from the t90j swapped into it, and its that longer (t90j) input shaft that has to work with the pilot bearing.
     
  20. Nov 17, 2020
    OnlyOneDR

    OnlyOneDR Member 2023 Sponsor

    R
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    I would never re-install a transmission after putting a lot of miles on a clutch without changing the pilot bushing. It is just too much work to pull it all back apart prematurely for a $3 part. Clean and polish the nose on the input shaft as well.
     
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