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T18 problem

Discussion in 'Early CJ5 and CJ6 Tech' started by bkd, Jul 21, 2011.

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  1. bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    drove the jeep into town yesterday....on the return trip I noticed the shifting was more difficult. I put it in nuetral but it wouldn't roll freely.....hmmm
    I can start it and put in gear...with gas applied it will roll, but let off the gas and it comes to a sudden stop. Will not roll freely in nuetral.....have checked line lock, unlocked rear hubs and wheels turn freely.......seems to shift through gears but not as easy as I'd expect
    where to start???? clutch, tranny, rear end............
    thanks, Jim
     
    bkd, Jul 21, 2011
    #1
  2. aallison

    aallison 74 cj6, 76 cj5. Has anyone seen my screwdriver?

    How hard is it to take the top off the tranny and take a peek inside? I'd start there based on the fact it does not shift as eaisly as you think it should. you could drop the rear driveshaft and push it around and see if it's easy to push.

    Or it could be the clutch. My first guess is something in the tranny.
     
    aallison, Jul 21, 2011
    #2
  3. jzeber

    jzeber Well-Known Member 2022 Sponsor

    Hey Jim,
    Are you running front disc brakes?
     
    jzeber, Jul 21, 2011
    #3
  4. cj6/442

    cj6/442 Sponsor

    brakes ,line lock
    jack it up and turn wheels by hand
     
    cj6/442, Jul 21, 2011
    #4
  5. bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    I'll put it up in the air tomorrow ....with linelock set it won't budge.....linelock off and in nuetral it'll move several inches before binding....
    Yes front disc........thinking rear end at this point

    Sent from my DROID2 using Tapatalk
     
    bkd, Jul 21, 2011
    #5
  6. Patrick

    Patrick Super Moderator Staff Member

    Other than the hard shifting, it sounds like a rear diff/ gear problem. I've seen a bad ring and pinion act that way more than once.
     
    Patrick, Jul 21, 2011
    #6
  7. jzeber

    jzeber Well-Known Member 2022 Sponsor

    Had a friend who had his front disc brakes lock up and he could not make it budge.
     
    jzeber, Jul 22, 2011
    #7
  8. bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    Think I eliminated that .....with linelock on it won't budge.....with it off it'll roll until slack is taken up in the rearend......haven't put it up in the air yet, maybe tonite or tomorrow.....thanks for the help/ ideas guys

    Sent from my DROID2 using Tapatalk
     
    bkd, Jul 22, 2011
    #8
  9. nickmil

    nickmil In mothballs.

    Try putting the transfer case in neutral with the rear hubs locked and see if it is goo/bad. May narrow it down a bit. Transfer case in neutral and it acts up then most likely rear end. If it's improved then that would point to the rear end or possible drive line (U-joints binding, rusted, etc.)
     
    nickmil, Jul 22, 2011
    #9
  10. bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    TC in nuetral and it rolls freely.....having a hard time shifting into 3rd or 4th........CRAP!!!!!!

    Sent from my DROID2 using Tapatalk
     
    bkd, Jul 22, 2011
    #10
  11. aallison

    aallison 74 cj6, 76 cj5. Has anyone seen my screwdriver?

    Still vote for tranny.since:

    "I noticed the shifting was more difficult. I put it in nuetral but it wouldn't roll freely.....hmmm....Will not roll freely in nuetral...."

    The only thing that causes the shifting to be more difficult is the tranny, unless the driveline is binding up somehow and when you put the transfer case in neutral, it eliminated everything but the tranny or maybe the clutch. But the hard shifting tells me............tranny.

    Sorry. I'd say it's upgrade time but with a T-18, there aint much to upgrade too. But at least a rebuild is easy for what it is...........
     
    aallison, Jul 23, 2011
    #11
  12. bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    just rebuilt it....probably doesn't have a hundred miles on it mehh:rofl::(:evil:
     
    bkd, Jul 23, 2011
    #12
  13. Posimoto

    Posimoto Hopeless JEEP Addict

    Man, that really sucks, Jim. I hope you're not pulling the T18 back out. I hope it ends up being something simple.
     
    Posimoto, Jul 23, 2011
    #13
  14. aallison

    aallison 74 cj6, 76 cj5. Has anyone seen my screwdriver?

    x2 on the just rebuilt tranny sucking thing if it's what's wrong.....

    Really hope it's something simple. But I'm out of suggestions.
     
    aallison, Jul 23, 2011
    #14
  15. nickmil

    nickmil In mothballs.

    Before you pull it out check the mainshaft nut
     
    nickmil, Jul 25, 2011
    #15
  16. bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    Gotta refresh myself with parts id.....so pull OD and check nut on output?
    Just got it up in the air this morning btw

    Sent from my DROID2 using Tapatalk
     
    bkd, Jul 25, 2011
    #16
  17. jpflat2a

    jpflat2a what's that noise?

    didn't the OD nut back off once before ?
     
    jpflat2a, Jul 25, 2011
    #17
  18. bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    Yep......getting ready to crawl under the Jeep......we will see

    Sent from my DROID2 using Tapatalk
     
    bkd, Jul 25, 2011
    #18
  19. bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    well good news bad news (but the good is much better than the bad :))......I pulled the OD and found the bowl gear loose, the special retaining washer was beat up and the special clip nowhere in site. Pull the bowl gear then reinstalled and the tranny shifts through the gears smoothly and the driveline can be turned by hand.
    I thought I had a extra washer/clip but can't find it....will need to order from Herm.....the bad is I've yet to succeed in getting these installed so the bowl gear doesn't loosen up...REALLY frustrating
    Gonna need to flush the OD and TC to make sure there's no metal in the gears, but very happy I don't hafta pull the T18 again
    Jim
     
    bkd, Jul 25, 2011
    #19
  20. cj6/442

    cj6/442 Sponsor

    Saweet!!!
     
    cj6/442, Jul 25, 2011
    #20
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