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DIY: Steering Shaft Seal

Discussion in '1st Gen Tundras (2000-2006)' started by bajaphile, Jun 29, 2019.

  1. Jun 29, 2019 at 7:06 PM
    #1
    bajaphile

    bajaphile [OP] New Member

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    Doing a first "how to" on this forum. The steering shaft seal is a pretty straightforward remove and replace to really make a difference in reducing engine noise getting into the cab. When I first drove my Tundra I thought it had a minor exhaust leak. After checking with a shop vac and smoke machine, I realized there was no leak. Doing some searches, I found a few threads on this steering shaft seal. A lot of people stated that they had been tracking down an exhaust leak at the manifolds for years only to find out it was just this seal which had fallen apart.

    Parts required: Steering shaft seal PN 45292-35090

    1) Park truck with wheels going straight ahead and steering wheel centered. Pull out key and lock your steering wheel so it doesn't turn when doing the maintenance. Throw your new seal in the freezer.

    2) Pull back carpet around the area behind the brake pedal where the steering shaft intercepts the firewall.

    3) Remove felt cover, held by Velcro around the steering shaft at firewall.

    4) Remove 3 10mm head bolts that hold metallic cover on around the steering shaft. What you'll see is the bronze bushing (seal) you'll be replacing: (Notice the rubber around the shaft is rotted and missing).

    20190629_114637.jpg

    5) Underneath the vehicle, all you'll need to do is remove the steering shaft coupler that attaches the steering shaft to the rack and pinion. This only requires removing two 12mm bolts.

    20190629_184053.jpg

    6) Once you've removed those, it's a good idea to mark the steering coupler so you know which way to put it back on.

    20190629_121037.jpg

    7) Now it's time to take the coupling off. You should be able to hit the coupler up off the rack and pinion with a brass drift, dowel or punch. The idea here is to slide it up the steering shaft. You may need to lube the splines a bit. My dad's truck here has some rust issues and it took a few good whacks to get it to move.

    20190629_121113.jpg

    8) Once the coulpler is up enough, you can pull it off the rack and pinion splines, then back down towards you and off completely. If you have to, you can hit it down with a dowel from the top of the engine. There is plenty of room to do so.

    20190629_124720.jpg

    9) From inside the vehicle, you can simply tap out the old seal down towards the engine/firewall. I've done this 2x now and it was very simple. No puller required. Old vs New seal:
    20190629_125102.jpg

    10) Using dielectric/silicone grease, or whatever grease you find suitable for rubber contact, you can grease up your steering shaft so the new seal can slide up and then eventually slide against for the next 100k miles.

    11) Pull the seal out of the freezer and add some grease to it. You can slide it up with your hands from the bottom and push it up into the firewall hole. It should stay there while you grab a longer wooden dowel and tap it into place.

    12) Put steering coupler back on, tighten the 12mm bolts, put together the inside covers and enjoy a new sounding truck! The difference in sound is remarkable! Very highly recommended. By the way, you can inspect your seal by looking up from beneath the truck with a flashlight. Easy to check, easy to replace and well worth the 1-2hrs of work, if that!
     
    MrAristo, speedtre, MS22 and 10 others like this.
  2. Jun 29, 2019 at 8:34 PM
    #2
    Pudge

    Pudge Super Secret Elite Member #7

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    Nice write up :thumbsup:
     
    MS22 and Professional Hand Model like this.
  3. Jun 30, 2019 at 5:21 AM
    #3
    Professional Hand Model

    Professional Hand Model A.K.A ‘Golden Hands’

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    Sweet instructional. Probably stops the winter cold drafts, as well.
     
  4. Jun 30, 2019 at 5:44 AM
    #4
    Professional Hand Model

    Professional Hand Model A.K.A ‘Golden Hands’

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    If I may, here is a schematic for your sweet repair to give us a big picture look.

    upload_2019-6-30_8-44-27.jpg
     
    00TundraZ and TX-TRD1stGEN like this.
  5. Jun 30, 2019 at 6:27 AM
    #5
    bajaphile

    bajaphile [OP] New Member

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    Icon Coilovers, Icon AALs, JBA headers, 285/75r16 BFG KO2s
    Yep! That is the one. Thanks for adding.
     
  6. Jul 1, 2019 at 7:18 AM
    #6
    00TundraZ

    00TundraZ New Member

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    Great write-up! Concise, simple instructions, and great pictures.

    Thank you for taking the extra time to do this!
     
  7. Sep 9, 2019 at 6:38 PM
    #7
    Jeepmann

    Jeepmann New Member

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    Very Helpful thanks
     
    bajaphile [OP] likes this.
  8. Mar 22, 2020 at 1:37 PM
    #8
    Alltimehigh

    Alltimehigh New Member

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    Doing this today and cant make the old seal budge by trying to tap it out from the top. Any tips?

    Ill try to oil it up somehow in the meantime.

    Edit. Done. Not tough at all. Great writeup!
     
    Last edited: Mar 22, 2020

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