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Replacing clutch plates in rear differential

Discussion in '2nd Gen. Tacomas (2005-2015)' started by TheSwede, Mar 18, 2021.

  1. Mar 18, 2021 at 11:54 PM
    #1
    TheSwede

    TheSwede [OP] Active Member

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    Hi,
    I have the Mech Limited Slip Differential in my truck. I think it is time to replace the clutch pack so it does not turn into an open diff. I've been searching for DIY on this topic but haven't found anything specific for Tacomas yet (quite alot of info on replacing bearings/seals or swapping the diff entirely).

    Has anyone done this procedure? If so did you get OEM plates or aftermarket kit? Any special tools needed? How did you compress the spring?

    Thanks for a great forum!
     
  2. Nov 3, 2021 at 1:56 PM
    #2
    TheSwede

    TheSwede [OP] Active Member

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    Hi again,
    My LSD was so worn out that it behaved like an open diff. I searched the world wide web for replacing clutch pack in a Tacoma but could not find any write ups - but a lot for other brands. Good pieces of information can be found here on TW on how to get your diff out and back in again. I used this one for example:

    https://www.tacomaworld.com/threads...d-installation-of-e-locker-3rd-member.193828/

    I did not stretch my brake lines that some suggests, it looked far too sketchy for me. I simply disconnected them to get the axles out. Bleeding the brakes is a 30 min job anyway - if nothing brakes in the procedure.

    I ordered the parts that I thought was needed after studying the FSM.
    - A new spring (90501-60004)
    - 7 x clutch plates (41385-35010)
    - 7 x thrust washers 1.80mm (41361-14201)
    - 2 x thrust washers marked N 1.70mm (41361-14211)
    - shims of different sizes from 0.15-0.30 mm (90564-50001 -- 90564-50005)
    - Gasket (paper version 42181-34011)

    The job all in all took 5-6 hours, and I am by no means a mechanic. The tricky part is that you have to be very exact on all the measurements. 0.05 mm can make a big difference in the end result. I used a micro meter and digital calipers.

    After the procedure I had a preload of roughly 130NM - I am not sure what it should be since the FSM does not mention anything.

    I can give more detail if anyone is interested.

    IMG_0589.jpg

    IMG_0607.jpg
     
    Last edited: Nov 9, 2021
    po35042, SR-71A, BassAckwards and 4 others like this.
  3. Nov 8, 2021 at 6:40 AM
    #3
    dirtnsmores

    dirtnsmores A camping truck

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    Thanks! Great job getting this done yourself. Did you get quotes from shops to do the work? I was thinking about replacing mine on my 06 sport with a truetrac but after reading a lot of posts from BlueT I think ours is pretty robust if you keep it maintained. Going to jack it up and test it this week.
     
  4. Nov 9, 2021 at 2:34 AM
    #4
    TheSwede

    TheSwede [OP] Active Member

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    I did talk to the Toyota dealership. They do not replace clutch packs, or rather, do not touch the third member at all they told me. So they quoted me for a new third member plus work - it was well over 4000$ if I remember correctly. Unfortunately I have no other mechanics around here that I would trust with the job. People that can repair differentials seems to be a dying breed:) which is understandable. Now I spent around $200 in total - including new oil.

    Except for the worn clutch plates the differential looked like new after 14 years - not too bad.
     
    dirtnsmores, Torspd and USMILRET like this.
  5. Nov 9, 2021 at 7:53 AM
    #5
    Torspd

    Torspd Tor-nication

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    There used to be a thread on www.xr-underground.com. A guy from Canadialand used the clutch packs from a kit for a MK4 Supra. I believe he followed the procedures and specs for that. Mind you, that this was around 10 years ago, that I read that.
     
    TheSwede[OP] likes this.
  6. Nov 9, 2021 at 12:18 PM
    #6
    TheSwede

    TheSwede [OP] Active Member

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    Thanks @Torspd - I found it I think:
    http://www.xr-underground.com/threads/how-to-upgrade-your-diff.57404/

    Good write up! In the parts catalog it says that the clutches fits Supra, Tacoma, Tundra and LandCruisers.

    Seems like street racers like the clutch type lsd while offroaders prefer locking/torsen lsd. I drive alot on snowy and icy roads and then I think the clutch type is superior, even if they wear out.

    Anybody knows the correct preload?
     
    Torspd likes this.
  7. Nov 9, 2021 at 12:40 PM
    #7
    Torspd

    Torspd Tor-nication

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    Great resourcefulness
     
  8. Nov 10, 2021 at 5:15 AM
    #8
    TheSwede

    TheSwede [OP] Active Member

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    EdgemanVA and Torspd like this.
  9. Sep 12, 2022 at 6:10 AM
    #9
    FishaRnekEd

    FishaRnekEd Well-Known Member

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    if you just did this correctly, you are a mechanic!
     
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  10. Sep 12, 2022 at 9:07 AM
    #10
    DG92071

    DG92071 Well-Known Member

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    The factory rear LSD works awesome in my Tacoma and I don't have to hit a switch or anything else.
     
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  11. Sep 12, 2022 at 10:34 AM
    #11
    TheSwede

    TheSwede [OP] Active Member

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    Thats the beauty of a clutch based LSD!
     
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  12. Sep 12, 2022 at 10:35 AM
    #12
    dirtnsmores

    dirtnsmores A camping truck

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    Great work. Instead of replacing mine I went with a Truetrac. Happy so far!
     
  13. Sep 12, 2022 at 10:38 AM
    #13
    TheSwede

    TheSwede [OP] Active Member

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    Hmm I thought about that route too - can you feel when it engage or is it smooth?
     
  14. Sep 12, 2022 at 10:40 AM
    #14
    dirtnsmores

    dirtnsmores A camping truck

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    Completely smooth you don't know it's there. It's not a true locker. It's a limited slip. Off-road it was great on a recent trip. Also regeared at the same time. Went with East Coast Gear Supply they sent me a whole unit already assembled and I paid someone to drop it all in. It was about 1350 for the assembled unit and another 350 to have it installed.
     
    TheSwede[QUOTED][OP] likes this.
  15. Jul 26, 2023 at 5:11 PM
    #15
    TacoTuesday1

    TacoTuesday1 Well-Known Member

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    is it better to rebuild and upgrade parts within stock LSD

    or switch to truetrac
    Which I believe is mechanical, helical, similar or same as torsen
    No clutches or wearable parts
     
  16. Jul 26, 2023 at 5:15 PM
    #16
    dirtnsmores

    dirtnsmores A camping truck

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    I went the route of Truetrac and regeared at the same time with east coast gear supply and a local installer. Truetrac has been amazing for me and yes, you described it correctly
     
  17. Feb 15, 2024 at 4:32 PM
    #17
    nickonfire700

    nickonfire700 Reg. Cab Nation Member

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    Hey @TheSwede, do you remember where the thrust washers marked N (part #41361-14211) go in the clutch pack? I am thinking about replacing the clutches in my LSD, and I am just curious where they end up, or are the factory clutch discs marked? I had the LSD opened when I first bought it and installed the Wier performance shim kit, but I do not remember seeing any of the clutches marked.
     
  18. Feb 17, 2024 at 1:15 PM
    #18
    TheSwede

    TheSwede [OP] Active Member

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    Hey,
    No they are not marked and it took several sources for me to figure it out. If I remember correctly the plates called N are the plates that sits closest to the housing walls. They only have clutch material on one side and are smooth on the side were you put the shims. I do not think they are needed, you could just use regular clutch plates. But they are in there from the factory. See below pictures:IMG_0043.png IMG_0042.jpg
     
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  19. Feb 17, 2024 at 6:25 PM
    #19
    Torspd

    Torspd Tor-nication

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    Well done.
     

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