Clutch R&R questions

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by God prefers Diesels, Dec 3, 2020.

  1. God prefers Diesels

    God prefers Diesels Road Train Member

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    Thanks, everyone. I've read all your posts, and appreciate the help.

    Tranny is on the ground next to the truck.

    Tomorrow I'll pull the clutch and flywheel, and get the flywheel to the outfit that can turn it. Then I've got a lot of gunk to clean up. Tranny was leaking out the bellhousing so bad, I won't be able to see if the rear main seal is leaking until I get the flywheel off. I figured it's leaking out the input shaft, but there's so much filth in there, I can't even really tell. Either way, it'll get a new input shaft, bearing, and gasket between case and bellhousing. All the stuff in the kit, except I don't think I'll be taking the shift tower off, unless there's a good reason to?

    What shifter bushings are you talking about? The two plastic ones that go around the bolt that holds the shifter on?
     
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  3. AModelCat

    AModelCat Road Train Member

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    Definitely strap the transmission to the jack. They've been known to jump off.

    A U-joint tool could come in handy if you've got full round yokes.

    Caps and plugs for the external cooler lines (if equipped).

    I've always stacked the clutch on the input shaft. I think its easier but that's just me. Regardless, ALWAYS verify the discs and intermediate plate are in the correct order and direction, have seen them stacked wrong in the box. Its rare but can happen. Make sure the release fork is properly engaged before you bolt it all up. May be worth checking the cross shafts/bushings and fork for wear since its apart. Definitely resurface the flywheel and install a new pilot bearing.

    When you pull the shift tower, I like to remove the springs from the top cover so they don't get lost. I also cover the opening. Usually I just tie the shifter to the steering wheel and leave it hanging.
     
  4. God prefers Diesels

    God prefers Diesels Road Train Member

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    I did. And it's a #### good thing, too, let me tell ya...

    No, I've got the bolted straps like a pickup.

    I have an external cooler, and I went ahead and drained the fluid. I've got to separate the bellhousing and case anyway, and I don't know if it will all leak out when I do. Either way, I figured it would be better just to drain it in a clean bucket so I didn't make a mess later. It's only got a couple thousand miles on it, so I'll pump it back in when I'm done.

    It's getting a new cross shaft and bushings, and I'm gonna have the flywheel turned.

    See, I didn't pull the tower. I just took the bolt out of the shifter, and left the tower on. Should I pull it? I've got a gasket for it.
     
  5. AModelCat

    AModelCat Road Train Member

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    I can't ever recall seeing a shifter that could be unbolted from the tower. That's a new one on me. Definitely better since it limits dirt from getting inside. For the 5 minutes it takes I'd change the gasket since you have a new one already.
     
  6. jamespmack

    jamespmack Road Train Member

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    The thru bolt. From nub to lever.
     
  7. AModelCat

    AModelCat Road Train Member

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    Honestly from what I recall every one of them has been a roll pin or maybe even welded? I'm about 99% sure there definitely is not one on the 15 speed in my KW.
     
  8. spsauerland

    spsauerland Road Train Member

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    I am another vote for one piece clutch brake too, all I use. Seen too many 2 piece laying in inspection cover. Install kit will not come with release cross shafts, probably need them too. ISX rear seal (front too) is a wear ring style seal. No way to correctly install without proper tool. Seems like most ISX's I do need rear structure sealed and housing is usually fretted. It never ends...
     
  9. God prefers Diesels

    God prefers Diesels Road Train Member

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    The kit came with the gray piece that looks like it's made of cast. Are you talking about the large machined pins that go into it, and then into the bushings in the bell housing? It did not come with those.

    I've decided to go with the one piece brake now, lol.

    What tool do you need to install the rear seal?

    Thanks.
     
  10. God prefers Diesels

    God prefers Diesels Road Train Member

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    Jiminey Christmas!! Did they put the decimal in the wrong spot?
     
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