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Pulling Muncie from bell housing? It doesn't want to come out.

Discussion in 'U-shift em' started by NZ GS 400, Dec 13, 2016.

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  1. NZ GS 400

    NZ GS 400 Gold Level Contributor

    Hi all,

    Well, I have the 4 bolts attaching the tranny to the bell housing removed, the crossmember is removed and pushed back to the rear out of the way, the speedo and reverse switch are disconnected, and the parking brake is up on top of the tranny housing. Videos I have watched and the description in the service manual make it seem like it should just slide straight back.

    It won't budge. Should I need to pry it loose or something? I tried tapping moderately with a rubber mallet to no avail. I also tried jacking the tranny up slightly to see if that would break it free. I know not to do that too much because it could damage things inside the clutch housing.

    Seems like I may have missed something??:Do No:
     
    NZ GS 400, Dec 13, 2016
    #1
  2. CJay

    CJay Supercar owner Staff Member

    Should just pull right out. Could be rusted onto the splined disc. Or the input shaft could be stuck in the pilot bearing.

    Stupid question #1- Did you grab a hold of the tail shaft and give it a good shake?
     
    CJay, Dec 13, 2016
    #2
  3. Dano

    Dano Platinum Level Contributor

    Sounds like you're there. Probably the input shaft/pilot bushing/clutch disk just binding. I guess you could have someone push the clutch pedal in which would free up the disk and might allow the trans to slide out. If the car hasnt been driven in a long time, I guess the pilot could be frozen in the bushing. Again, push the pedal down and rotate the crank. The trans shouldn't rotate unless the pilot is seized.
     
    Dano, Dec 13, 2016
    #3
  4. NZ GS 400

    NZ GS 400 Gold Level Contributor

    @Jason: Yes, but perhaps without the necessary enthusiasm. I will go try that now and let you know. Thanks Jason.

    @Dano: Thanks for the suggestion. I am alone on this mission at the moment. The car hasn't been driven in 2 years, and then only briefly.
     
    NZ GS 400, Dec 13, 2016
    #4
  5. Dano

    Dano Platinum Level Contributor

    Funny, we were posting @ the same time. At the answers were consistent.:beer
     
    Dano, Dec 13, 2016
    #5
  6. NZ GS 400

    NZ GS 400 Gold Level Contributor

    Ok, I just gave the tail a good shake. Nothing.

    If engaging the clutch doesn't do it, how else can I get it off if it is rusted onto the spline?
     
    NZ GS 400, Dec 13, 2016
    #6
  7. NZ GS 400

    NZ GS 400 Gold Level Contributor

    :beers2: I know I am in good hands!
     
    NZ GS 400, Dec 13, 2016
    #7
  8. Dano

    Dano Platinum Level Contributor

    I'm WAY rustier (no pun intended) than Jason!
     
    Dano, Dec 13, 2016
    #8
  9. CJay

    CJay Supercar owner Staff Member

    Well, theres more than one way to skin a cat.

    Just throwing out a couple of ideas...If we assume the disc is stuck to the input shaft- you could rotate the flywheel and remove all six pressure plate bolts through the inspection area and then remove the bellhousing bolts. If you do that then the only thing that's would be still connected to the engine would be the tip of the input shaft in the pilot bearing. Just make sure you screw the 4 trans bolts back into the bell. Your essentially removing the trans as if it were an automatic. So the bell, trans, plate and disc would come out together.

    If it still doesn't budge (I don't see how it wouldn't), then the input is stuck in the pilot, but it cant rust in there because its bronze.

    Its gotta be the disc stuck. Is there any space between the trans and the bell at this point? Can you put a prybar in between and give it a little pressure to see if it moves? Might just need a little gentle persuasion
     
    CJay, Dec 13, 2016
    #9
  10. NZ GS 400

    NZ GS 400 Gold Level Contributor

    Thanks Jason, I will try both of these ideas. I will let you know how I make out.
     
    NZ GS 400, Dec 13, 2016
    #10
  11. CJay

    CJay Supercar owner Staff Member

    Ok, be careful and be safe.
     
    CJay, Dec 13, 2016
    #11
  12. Dano

    Dano Platinum Level Contributor

    Having to pursuade them gently with a prybar, especially one that hasn't been driven, isn't unheard of or even too unusual. Even if, as Jason recommend, you can remove the pressure plate bolts (essentially same effect as I said of pushing in the pedal) that'll take pressure off the disk if it's binding and allow you access to maybe pry on the disk or spray some penetrating oil onto the splines.if nothing else, it should allow the tns to slide fore and aft slightly & you'll know it's the disk stuck on the splines and not the pilot (& go with a roller pilot bearing when re-assembling)
     
    Dano, Dec 13, 2016
    #12
  13. NZ GS 400

    NZ GS 400 Gold Level Contributor

    Thanks guys. I tried prying gently where the tranny meets the bell. I could see the slightest bit of give, but I didn't want to force it, given the possibility of marring the housing. I put the 4 bolts back in and will take out the plate and bell housing bolts next. That is a job for tomorrow or the weekend at this point.....
     
    NZ GS 400, Dec 13, 2016
    #13
  14. Dano

    Dano Platinum Level Contributor

    You're welcome - Anytime. Try just the pressure plate bolts first -that might be enough, but given that you did see the slightest movement should rule out the pilot being stuck.
     
    Dano, Dec 13, 2016
    #14
  15. NZ GS 400

    NZ GS 400 Gold Level Contributor


    Will I have a problem getting the pressure plate bolts back in? Are you suggesting that I may not need to remove the bell housing bolts? What I understand you to be saying is that I could remove the plate bolts and then go back and remove the 4 trans bolts and trying pulling it out again. Is that right?
     
    NZ GS 400, Dec 13, 2016
    #15
  16. flynbuick

    flynbuick Guest

    Just to help with the load and potential for binding going both in and out, especially with one person, get two more bolts the same size as those for the original mounts. Cut the heads off and screw just studs in so you can slide the trans in and out while resting it on the top studs.
     
    flynbuick, Dec 14, 2016
    #16
  17. wkillgs

    wkillgs Gold Level Contributor

    You could apply some force to pull the trans backwards. A ratcheting tie-down between the trans and the rear should do it. Leave the trans-bell bolts in place but turned out so the trans doesn't fly off if'n it breaks free.
    Put a little pull-force on it with the strap and some tapping with a hammer or rotating the engine might break it free.
     
    wkillgs, Dec 14, 2016
    #17
  18. Dano

    Dano Platinum Level Contributor

    I would try just the pressure plate bolts first, then if that doesn't work go on to the bellhousing as Jason suggested.
     
    Dano, Dec 14, 2016
    #18
  19. CJay

    CJay Supercar owner Staff Member

    Great minds think alike! :beers2:
     
    CJay, Dec 14, 2016
    #19
  20. Dano

    Dano Platinum Level Contributor

    My mind is rusty - You're the "expert in obsolete technology":) - I'm just getting back into all this and haven't wrenched on cars in a while, but looking forward to it!:beers2:
     
    Dano, Dec 14, 2016
    #20
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