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Speedi-Sleeve for D18

Discussion in 'Early CJ5 and CJ6 Tech' started by Bob, Apr 15, 2006.

  1. Apr 15, 2006
    Bob

    Bob Member

    Northern California
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    Sep 23, 2002
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    439
    I'm at it again. The infamous D18 rear seal leak has gotten worse lately so I've decided to tear into it once again.:rofl: You know, I think I can do this job with my eyes closed now.:oops: The surface on the yoke isn't too bad; it's pretty smooth, but maybe it has worn down some in diameter. Anyway, has anyone ever used a Speedi-Sleeve on the rear yoke of the D18 to provide a better sealing surface? Anyone remember what the part number for the Speedi-Sleeve is? Or do you think it would be better to just get another yoke? Also, I'm using the National #473229 seal. Thanks guys.
     
    Bob, Apr 15, 2006
    #1
  2. Apr 15, 2006
    181jeep

    181jeep Banned

    central valley, ca
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    Feb 3, 2004
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    Are you sure that seal is the culprit ?? Are you sealing the splines good ? Are the shimms leaking ??

    JB
     
    181jeep, Apr 15, 2006
    #2
  3. Apr 15, 2006
    Bob

    Bob Member

    Northern California
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    The splines were actually sealed well with RTV and no leakage was coming from them. Same goes for the shims. They haven't leaked since I rebuilt the case a couple of years ago (knock on wood;)).
     
    Bob, Apr 15, 2006
    #3
  4. Apr 15, 2006
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    If the yoke's journal isn't actually groved or pitted that's probably not your problem, I can't see the journal wearing down without exihibiting some kind of damage. Even if it had worn down enough for the seal not to work it would be apparent just by looking at it-

    A Speedy Sleeve won't hurt but thats a lot of $$$ to solve a problem you probably don't have.

    Leaks back there are caused by-

    1. A bad seal (oil gets into the parking brake)

    2. Leaks around the four bolts that hood the brake backing plate/bearing cap on (yes, I know theres five bolts but one of them doesn't go throught the cap) (this also puts oil into the brake area)

    3. Leaky splines on the output shaft (that won't put oil into the brake area).

    4. leaks around the bearing cap shims (oil on back of backing plate but no oil in brake or around the yoke)

    If you've sealed the splines, your journal, seal & shims are good it's pretty much gotta be those Pesky Darned bolts :(.

    H.
     
    Howard Eisenhauer, Apr 15, 2006
    #4
  5. Apr 15, 2006
    jzeber

    jzeber Well-Known Member 2022 Sponsor

    Morgan Hill, Ca
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    I needed a sleeve for mine. Part number ANS99156 $29.00 It does not leak any more but I also made sure to use lots of silicon on the grooves in the rear shaft.
     
    jzeber, Apr 15, 2006
    #5
  6. Apr 15, 2006
    Bob

    Bob Member

    Northern California
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    Oil in the brake is what the problem is. The splines were sealed good because the rear nut and washer were dry. The shims are dry as a bone too. Guess I better take those four bolts out and put some RTV on the threads just to be safe.

    As for the yoke, it does have a nice smooth surface so I guess I'll just stay away from a Speedi-Sleeve. Thanks for the help Howard.
     
    Bob, Apr 15, 2006
    #6
  7. Apr 15, 2006
    Bob

    Bob Member

    Northern California
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    Thanks for the part number Jzeber.
     
    Bob, Apr 15, 2006
    #7
  8. Apr 15, 2006
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    I'd be more worried about around the heads than the threads, the bolt shafts extend throgh the rear cap which has oil in it, I believe that the oil leaks between the cap bolt holes & the shafts and out around the lock washers.

    H.
     
    Howard Eisenhauer, Apr 15, 2006
    #8
  9. Apr 15, 2006
    Bob

    Bob Member

    Northern California
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    I'll check it out. Thanks Howard.
     
    Bob, Apr 15, 2006
    #9
  10. Apr 16, 2006
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    4,275
    Ok, I'll bite. What's a Speedi-Sleeve?

    I grasp the concept, but how does it actually go in there?
     
    w3srl, Apr 16, 2006
    #10
  11. Apr 16, 2006
    Bob

    Bob Member

    Northern California
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    Bob, Apr 16, 2006
    #11
  12. Apr 16, 2006
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    Its slips over the seal land of the yoke/shaft/whatever thats been damaged. They come in different sizes, you select the one you need based on a friction fit. They come with a lip on one edge & an installation tool that fits over the sleeve pushing against the lip. A couple of whacks on the end with the BFH & it's on. The lip can then be removed if it interferes with anything.

    I can get you some pics if you'd like, I just bought a couple to fix up the seal area on Tonks back axles that got messed up due to the PO's attempt at a bearing job :(.

    H.
     
    Howard Eisenhauer, Apr 16, 2006
    #12
  13. Apr 16, 2006
    uglyjeep

    uglyjeep Member

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    61
    Hi All,
    In case your seal is the culprit, Timken makes a nice double lip seal for the transfer case outputs and it is muck better than most of the single lip seals that come in the common rebuild kits. They are available at most Autozone stores, sorry I don't remember the part number, but they were able to look it up by application without a problem.

    Daniel
     
    uglyjeep, Apr 16, 2006
    #13
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