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Toyota 4X4 OEM Shim for RR Drive Shaft Center Support Bearing - to Correct Vibration

Discussion in '1st Gen. Tacomas (1995-2004)' started by Tacomaki, Sep 14, 2010.

  1. Sep 14, 2010 at 7:52 PM
    #1
    Tacomaki

    Tacomaki [OP] Member

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    OK. Sometimes, Toyota gets the fix right (meaning: it may cost a little more than a stack of washers but the design behind it is important).

    I was having some vibration during coasting and deceleration after installing a mild lift using OME Dakar 7 leaf pack (2.5-3 inch lift in the rear). I inspected it and found the rear drive shaft (3 piece) drive shaft angle was not aligned, mainly at the center cardan joint (double u-joint). OME did a good job making sure the 7 leaf pack kept a good angle on the u-joint at the rear differential without having to shim the rear axle. But the added strain on the upper cardan joint was increased enough to make a vibration.

    Typical fixes found on websites are:

    1. Flip the center support bearing for the rear drive shaft 180 degrees.(Not recommended due to the loading of the bearing not being designed to be upside down - could result in premature bearing wear).
    2. Add washers between the center support bearing and cross member.(Not too bad but this could vibrate loose as the stack of washers may shift resulting in a loss of torque and misalignment of the bearing and vibration again)
    3. Pay some pro to trouble shoot it (at $100/hour).
    4. Sell the truck. (Good option, poor on resale value if the customer actually test drives the used truck before agreeing to buy it for the asking price)
    Anyway, I ran across some Toyota Service shims that are designed to correct this angle based on a pretty good design. They are actually used to correct the cardan joint alignment on stock vehicles due to Tacomas/Tundras sometimes having variation in the cross member height causing a sharper cardan joint angle. They install between the bearing housing and the cross member. So, I just wanted to share the Toyota Service Part Numbers for the shims.

    P/N 37237 - 35010 (3.8mm thickness)
    P/N 37237 - 35020 (5.8mm thickness) (almost 1/4 inch)
    P/N 37237 - 35030 (7.8mm thickness)
    They cost about $15-$20 each and you need two for your truck if you decide to order them.

    You cannot stack these on top of each other to make thicker shims. They are designed with "legs" on them to orient them in one direction on the cross member. They are symmetrical and can be used on either the left or right side of the cross member mounting bracket.

    Advantages - the OEM Shims are:

    • E.D. Coated for good corrosion resistance (as opposed to zinc coated washers)
    • Designed to orient one direction on the bracket and don't rotate/shift like a stack of washers.
    • The hole in the shim closely matches the bolt OD so they don't influence torque too much.
    • They install in about 15 minutes.
    • They cost less than $30.
    Hope this helps.
     
  2. Sep 14, 2010 at 8:14 PM
    #2
    taco084gb

    taco084gb No matter where you go there you are.

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    Do you happen to have pics of yours with them installed and or pics of the shims?
     
  3. Sep 14, 2010 at 10:14 PM
    #3
    Digiratus

    Digiratus Adventurer

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    If you can't stack them, are you limited to 8mm of drop? :eek:

    That seems too restrictive. Doesn't seem like a third of an inch is enough drop. Did it eliminate all of your low speed (20-30 mph) post lift vibs?
     
  4. Sep 14, 2010 at 10:23 PM
    #4
    OffroadToy

    OffroadToy This ain't Dodge City, and you ain't Bill Hickok

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    thanks for the info!
     
  5. Sep 14, 2010 at 11:45 PM
    #5
    Beefed Taco

    Beefed Taco Taco Vending Machine

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    These drop brackets have been working great for the Tundra guys and a few of the 95.5-04 guys are using it also with good results. They are available for the 2nd gen Taco now too.

    Captured 2004-4-26 00007.jpg
    bdt 00025.jpg
    Captured 2004-4-7 00005.jpg
    Captured 2004-5-14 00011.jpg
     
  6. Sep 15, 2010 at 12:57 AM
    #6
    zero4

    zero4 Metal Cutter

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    Good idea & good info but that's seems pretty pricey for just shims. If that's $30 - $40 for just shims to drop only a 1/4 inch or so I would just pay a little more get the Beefed CB drop bracket. And I am later this week actually.

    If stacking washers actually works good you could just have some spacers made from a machine shop. I have a lathe & could whip these up pretty easily. I saw Beefed Taco's CB drop bracket in person & it's very nice. I wouldn't think twice about getting one.
     
  7. Sep 15, 2010 at 1:09 AM
    #7
    ilove_taco_ma

    ilove_taco_ma Well-Known Member

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    nothing, all stock expect got a OE replacement air filter K&N.

    will it fix the vibe even if i have a 2.5 on front and 1.5 at the rear? i have 5 washers on each side.
     
  8. Sep 15, 2010 at 2:52 AM
    #8
    KalamaKid

    KalamaKid Well-Known Member

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    same shit as everyone else
    Does the small vib really cause any extra wear on the carrier bearing? I have the shutter but its really intermittent. Although i do like the new shims your talking about. I just went to work and made two aluminum washers about 1/5 inch thick and stuck them under there. I only get the vib on rough uneven road but to be honest i think i've had a shutter ever since i've had the truck new off the assembly line.
     
  9. Sep 15, 2010 at 9:06 AM
    #9
    Beefed Taco

    Beefed Taco Taco Vending Machine

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    Here's what I know...the 2007-2010 Tundra's have what the dude's are calling the "launch shudder". It's a vibration that they all seem to notice around 25mph or in lifted cases, all the time.

    In stock form, the cure has been to bring the bearing down about 3/4", easily achieved with washer/spacers. 2 guys with stock Tundra's had the vibe and this cured it.

    I came out with the drop bracket on my friend's 08 2WD because his shaft obviously needed to come down in the center and 4WP's had 3 washer/spacers in there. This was a more affordable alternative than having a new rear section of drive shaft made.

    I also noticed there was unwanted movement in that area which is why I added the 3rd attachment point that uses a factory hole in the crossmember above and helps to make this area a bit stiffer like it should be.

    I've sold about 15 now to the Tundra community, all with 100% great results, all posted on Tundratalk. No more vibes on those trucks. I can't say this is a magic fix all, but I will say it has a perfect record on the Tundra and a couple 95.5-04 4x4/PR's.

    To the OP of this thread, great info, great writeup and good find. I'm sorry I kind of thread jacked you, I just wanted these guys to see there is a good way to get more drop than just using washers, which I know is what you were trying to do as well.
     
  10. Sep 15, 2010 at 9:13 AM
    #10
    ywen

    ywen Well-Known Member

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    when installing these sims, do we need to suppor the drive shaft when unbolting the CB? Should when expect the whole thing to drop down like a brick once the bolts are loosened?
     
  11. Sep 15, 2010 at 9:28 AM
    #11
    nelson18matt

    nelson18matt Well-Known Member

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    when i installed my beefed taco CB bracket the drive shaft did not fall like a brick. i just let it down easy w/ my hand and rested it on a jack while i got the bracket installed.

    it's super easy... did mine in the dark w/ hand tools and a few beers in me
     
  12. Sep 15, 2010 at 9:46 AM
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    Beefed Taco

    Beefed Taco Taco Vending Machine

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    Is there any other way? :)
     
  13. Sep 15, 2010 at 10:58 AM
    #13
    ilove_taco_ma

    ilove_taco_ma Well-Known Member

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    nothing, all stock expect got a OE replacement air filter K&N.
    well if that said to be fix the CB, i will be ordering from you sometime next week. gotta say good bye to my bucket seats. :(:(
     
  14. Sep 15, 2010 at 1:21 PM
    #14
    2011TacoSport4x4

    2011TacoSport4x4 Well-Known Member

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    I also have a vibration (20mph and a little at around 45-55mph) after lifting my 2011 Tacoma. It only has about 1500 miles on it and it has always had a slight vibration under heavy acceleration. But after the lift I notice it a lot, Its not too horrible but its annoying! Has anyone used the cb drop from toytec? I have one coming in tomorrow and am curious if its any good???
     
  15. Sep 15, 2010 at 1:31 PM
    #15
    malander

    malander That's some tight butthole

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    id get the cb from beefed... its beefy and seems like a much better way to lower the cb than washers. just pay the extra and get it done right thats one thing my truck has taught me
     
  16. Sep 15, 2010 at 4:49 PM
    #16
    nelson18matt

    nelson18matt Well-Known Member

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    word. doing it right the first time is better and cheaper in the long run
     
  17. Sep 15, 2010 at 6:14 PM
    #17
    malander

    malander That's some tight butthole

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    yup just dumped 917 into suspension and now i have to go back and dump another 200 just to make it right. i just couldnt sit back and let nine hundred bucks leave me unsatisfied. if i lift the rear anymore im definitally getting a beefed cb bracket drop
     
  18. Sep 15, 2010 at 6:43 PM
    #18
    Tacomaki

    Tacomaki [OP] Member

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    Well, I'm not sure if you can stack these or not. I didn't actually try it. After I looked at how these are made, I don't see why they couldn't be stacked. They have 4 legs on them that orient around the crossmember bracket. In the picture, it's the one that is olive drab colored.

    I had just installed them yesterday. They did get rid of the vibration at 70MPH and 45 MPH (harmonic).

    Sorry the second picture is a bit fuzzy. Autofocus let me down in the close-up and the nice new shiny bolt may not have helped either.

    Picture 003.jpg
    Picture 006.jpg
     
  19. Sep 15, 2010 at 7:02 PM
    #19
    Tacomaki

    Tacomaki [OP] Member

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    I have to admit it, after looking at the Street Tacos bracket, I see it is a pretty good design. I may have to go and get one later after I finish testing this mod in it's current design.
     
  20. Apr 24, 2012 at 7:17 PM
    #20
    johnnys96taco

    johnnys96taco New Member

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    I know that this is an old thread but it addressed my problem with driveline vibration after a 2"front 2.5" rear lift. I had a very annoying vibration, particularly bad at 25-35 mph. I decided to order the 1 1/2" drop bracket from Brian and give it a try. Well I have to say that it worked really well and the fit and finish of this product was excellent. Took me all of about 15 minutes to install and eliminated my vibration 99.9%. I believe that the other .1% is due to the carrier bearing being worn at 216,000. It was a little sloppy when I dropped it so needless to say a new one is on order. I strongly suggest that anyone with a vibration problem after a lift try one of these drops, it was a quick and simple fix...
    Got it at http://www.streetacos.com/
     
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