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Technical Removing pilot bearing

Discussion in 'The Hokey Ass Message Board' started by johnfin, Apr 16, 2022.

  1. johnfin
    Joined: Apr 11, 2008
    Posts: 113

    johnfin
    Member
    from auburndale

    I am having a heck of a time removing the pilot bushing on a 350 chevy. I have a decent slide puller for the job but it wont come out. I heated it with a torch and even put slits in it with a micro saw to loosen the force but it wont budge. Any thoughts?
     
  2. oldiron 440
    Joined: Dec 12, 2018
    Posts: 2,933

    oldiron 440
    Member

    I’ve seen them pushed out with a grease gun but I don’t remember how….
     
  3. BJR
    Joined: Mar 11, 2005
    Posts: 7,628

    BJR
    Member

    Fill with grease and with a tight fitting dowel or steel rod that fits inside the bushing smack it with a BF hammer.
     
    dirt t, Deuces, Gasser 57 and 9 others like this.
  4. Davesblue50
    Joined: Oct 25, 2021
    Posts: 81

    Davesblue50

    Have packed them with white bread as much as could go in. Put a bolt the size of the bearing ID in the hole and tap with a hammer. Keep packing with bread and it will force the bearing out.
     
    Rramjet1, Joe Travers, Deuces and 8 others like this.

  5. sunbeam
    Joined: Oct 22, 2010
    Posts: 5,685

    sunbeam
    Member

    If it is brass tap the hole for a bolt
     
  6. Los_Control
    Joined: Oct 7, 2016
    Posts: 778

    Los_Control
    Member
    from TX

    I used the grease gun to pack it full of grease, then used clutch alignment tool or dowel etc and smack it with the hammer ... creates a hydraulic action and the grease pushes the bearing out.
     
  7. I tried it and it worked for me. HRP
     
    Joe Travers, hrm2k, nochop and 3 others like this.
  8. 655DC733-188D-4949-A79D-41B97372D243.jpeg

    Bearing chisel , good to simply “blow up the bronze bushing into bits “

    C1035484-3F9D-4EAF-8F41-A04235512655.png

    pilot bearing puller , works great .

    9EE1D33A-EC1D-4647-AAFD-AD2FA2A1FBEF.jpeg

    blind hole bearing puller used with a slide hammer works really well

    2A81D6A7-80E9-47FE-AFF8-8ECD38CBA41E.jpeg

    pilot bearing puller for a slide hammer .


    Ive be also used the grease and punch method to force a bushing out .

    ive also mig welded on a bearing to “shrink it” and have it come out easier .

    a bronze bushing will melt with a torch without damaging any thing around it .


    Many many ways to skin a cat in this situation .
     
    verno30, Deuces, Gasser 57 and 3 others like this.
  9. samurai mike
    Joined: Feb 24, 2009
    Posts: 527

    samurai mike
    Member

    small pieces of wet paper will do the same thing as grease without the mess
     
    flatout51, Deuces, Gasser 57 and 2 others like this.
  10. Mr48chev
    Joined: Dec 28, 2007
    Posts: 31,298

    Mr48chev
    ALLIANCE MEMBER

    I've done it with grease and something that just slips in the hole in the bushing a few times but usually use a puller attached to a slide hammer.
    About 30 years ago when I didn't have access to a puller and was laying under the 48 in freezing weather I took my saber saw and cut a slot in the bushing to relieve the tension when I couldn't get it out with grease. I was too damned cold to have any patience that time though.

    Heating the bushing hurt and hinder progress rather than help as that will expand the bushing out and put more pressure against the crank. Hitting it with a blast from a Co2 fire extinguisher or packing it with dry ice would probably be more effective as far as heat/cold goes.
     
    Deuces, 41 GMC K-18 and '28phonebooth like this.
  11. johnfin
    Joined: Apr 11, 2008
    Posts: 113

    johnfin
    Member
    from auburndale

    So I got the bushing out with brute force but.....when I installed the clutch I remembered that I was suppose to ( or at least I think I should) put thread locker on the bolts to
    the flywheel to the crank. I torqued them to 80ft lbs. I know the newer cars use thread locker on the bolts and you can see traces of it on the bolts but I didnt see anything on
    these 40 year old bolts. Engine only has 180hp I think so I am not sure its necessary. What to you guys think?
     
  12. rusty valley
    Joined: Oct 25, 2014
    Posts: 3,339

    rusty valley
    Member

    Flywheels have been around a lot longer than thread locker, you'll be fine. Hope you had the crank flange and flywheel spotless clean to mate perfectly
     
    blowby, Bob Lowry and Desoto291Hemi like this.
  13. 350 Chevy with no Loctite on the flywheel bolts,,,,,,,,,what were you thinking !

    Lol,,,,,you’ll be fine,,,,,don’t give it another thought,,,,,if everything is clean and tight,,,,,you did your duty .

    Tommy
     
    olscrounger likes this.
  14. Bob Lowry
    Joined: Jan 19, 2020
    Posts: 977

    Bob Lowry

    Desoto and Rusty valley are right. I have been building engines since 1960 and didn't use
    thread locker on any of my builds until 2000. You'll be good.
     
  15. hepme
    Joined: Feb 1, 2021
    Posts: 231

    hepme
    Member

    this works. i've done it, to help i put a little wd40 around the edges and let it soak for a little while before i whacked it.
     
    nochop likes this.
  16. nochop
    Joined: Nov 13, 2005
    Posts: 2,766

    nochop
    Member
    from norcal

    Grease, dowel, tap
     
    dana barlow and rusty valley like this.
  17. blowby
    Joined: Dec 27, 2012
    Posts: 8,518

    blowby
    Member
    from Nicasio Ca

    I wonder who it was that came up with the idea of packing his pilot bearing with bread. Peanut butter might help too. But no jelly, too sticky.
     
  18. choptop40
    Joined: Dec 23, 2009
    Posts: 4,377

    choptop40
    Member

    That bearing was toast.....ha ha ...first time ive seen it removed with bread...
     
    clem likes this.
  19. That video does a great job of showing this process. But now it's got me wondering if I should be wearing latex gloves when I'm eating a sammidge.
    o_O :rolleyes:
     
  20. johnfin
    Joined: Apr 11, 2008
    Posts: 113

    johnfin
    Member
    from auburndale

    So my clutch kit came with a package of grease. Since the pilot bearing is impregnated bronze I am sure its not for that. Where else would you use grease around a clutch? I read somewhere a guy was talking about packing the throwout bearing. I think mine is sealed not that I want grease flying would the friction plate.
     
  21. If you have tried the grease & bread method and you don't want to buy the pilot bearing removal tool, you can rent the tool for free (their rental - pay and return for money back within 60 days) from your local Autozone. That's what I did when I had to remove the brass bearing from my chevy 235.
     
  22. mrspeedyt
    Joined: Sep 26, 2009
    Posts: 852

    mrspeedyt
    Member

    You still need the grease in the new pilot bearing. Just don't pack it full of grease.
     
  23. johnfin
    Joined: Apr 11, 2008
    Posts: 113

    johnfin
    Member
    from auburndale

    I read that you are never suppose to but anything on a sintered bronze bearing, it could gum it up as it has impregnated oil in the bronze.
     
    427 sleeper likes this.
  24. I have tried the grease thing and it has never worked for me. But as @sunbeam says here ^^^^^ taping and screwing a bolt in does work. I use a bottom tap so that the bolt can go past the bottom of the busing and push against the crank.
     
    Tim likes this.
  25. Corn Fed
    Joined: May 16, 2002
    Posts: 3,135

    Corn Fed
    Member

  26. I had heard of the bread idea before but never used it .
    I think the bread deal is the best overall idea,,,,,,it works,,,,,and is super easy to clean up .
    Very good thinking whoever came up with that .

    Tommy
     
    Joe Travers and VANDENPLAS like this.
  27. Doublepumper
    Joined: Jun 26, 2016
    Posts: 1,173

    Doublepumper
    Member
    from WA-OR, USA

    I always smear some on the bearing support and a dab on the fork contact areas.

    Removing pilot bearings? Gummies. Works perfect, not messy and much tastier than grease or bread:D
     
  28. 03GMCSonoma
    Joined: Jan 15, 2011
    Posts: 293

    03GMCSonoma
    Member

    You should use a BMF hammer. :)
     
    VANDENPLAS and BJR like this.
  29. 1971BB427
    Joined: Mar 6, 2010
    Posts: 7,474

    1971BB427
    Member
    from Oregon

    Did you guys quit reading the posts? He already has the bushing out.

    I'd not do much more than wipe a little grease on the input shaft of the trans before sliding the trans into the bellhousing. But even that isn't necessary with a sintered bronze bushing.
     

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