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REAR DIFF AXLE SEAL DIFFERENTIAL, CHECK YOUR BREATHER VALVE,MIGHT END UP NEEDING SEALS BEARINGS

Discussion in '1st Gen. Tacomas (1995-2004)' started by 1997tacomav6, Nov 11, 2018.

  1. Nov 11, 2018 at 6:45 PM
    #1
    1997tacomav6

    1997tacomav6 [OP] V6 5sp,RegCab,TRD Supercharger,2"pulley,meth, 650k

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    97 reg cab, v6 5sp 300hp supercharged, Methonal Injection, 650,001 plus miles, Original Owner
    V6 5sp,RegCab,TRD Supercharger, 2" pulley, methanol injected AC TRD supercharger,(MUST DO) TRD supercharger ported, rebuilt 3 times over 500,000 miles, every 125,000- 150,000 needs rebuild Projector headlights HID 5 speed manual Amsoil for all drive train Smaller 2” pulley,(300hp) (MUST DO) 2004 DESNO fuel injectors, zero ping ping, 2004 side door mirrors Dick Cepek Rims, Michelin tires LTX, ( that last 100,000 miles) Now running Dynopro ATM mud and snow tires KN cold air intake Cat back exhaust with ss exhaust tip, Raised exhaust tail pipe to 2" below body line Optima*dry cell battery,red top Alpine sirius radio, 200 watt amp, focal is165 split door pod speakers Focal door speakers Subwoffer behind seat Viper alarm, Electric Locks Dark tinted windows, 4runner bucket seats, Tacoma Rubber floor mats TRD fender extenders, Bilstien shocks chrome push bar, chrome nerf bars, add a leaf for rear springs trailer iv hitch, electric brake control, Drilled slotted brakes, High carbon steel (MUST DO) EBS green stuff 7000 series pads(MUST DO) TRD engine oil cap TRD stick shift, Rear sliding window 2002 4Runner functional hood scoop cut into Tacoma hood, 4Runner dual overhead map light Gentex Auto dim + Compass + Temp, garage,rearview mirror Corbeau bucket seats Snow Methonal kit stage 2 Champion 3 core aluminum radiator Linex bed liner
    So this posting is for everyone here that owns a Tacoma.
    This should be included in the maintenance of a Tacoma

    The rear differential release pressure valve is an item that can get stuck closed from dirt, mud or rust.

    If this happens you have a great chance of having your rear axles seals getting blown out from heat pressure.

    And that means new seals and bearing running 1000.00 or so if the dealer does it.

    My valve was stuck shut from dirt and my rear axle seal blew out.

    Had I taken the time to check it and or replace it at the cost of 12.00 I could have
    saved myself a lot of money and headaches

    Take a few minutes to see if your diff valve is working or just get a new one for 12.00 if
    you have a lot of 4x4, mud or dirt miles or rust on your truck.

    It’s takes a minute or two to remove it and clean it.

    9093003031 / 90930-03031 - PLUG, BREATHER (FOR REAR AXLE HOUSING) - Toyota OEM

    https://www.ebay.com/itm/9093003031...3EAAOSwax5YoktJ:sc:USPSFirstClass!80134!US!-1

    F1C87DB9-6FF6-4A5E-AE37-F252A9F415E4.jpg
    C513BD9A-A681-4300-AE27-EFAA776967B4.jpg
    A31B93F2-74E5-4BBA-A1F0-6B9E1D1C8AA1.jpg
     
    Last edited: Nov 11, 2018
  2. Nov 11, 2018 at 6:54 PM
    #2
    rickyg2008

    rickyg2008 Well-Known Member

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    Thanks for this
     
    1997tacomav6 [OP] likes this.
  3. Nov 11, 2018 at 7:19 PM
    #3
    rickyg2008

    rickyg2008 Well-Known Member

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    I searched for that part number on Amazon but it didn’t pull it up
     
  4. Nov 11, 2018 at 7:35 PM
    #4
    1997tacomav6

    1997tacomav6 [OP] V6 5sp,RegCab,TRD Supercharger,2"pulley,meth, 650k

    Joined:
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    Vehicle:
    97 reg cab, v6 5sp 300hp supercharged, Methonal Injection, 650,001 plus miles, Original Owner
    V6 5sp,RegCab,TRD Supercharger, 2" pulley, methanol injected AC TRD supercharger,(MUST DO) TRD supercharger ported, rebuilt 3 times over 500,000 miles, every 125,000- 150,000 needs rebuild Projector headlights HID 5 speed manual Amsoil for all drive train Smaller 2” pulley,(300hp) (MUST DO) 2004 DESNO fuel injectors, zero ping ping, 2004 side door mirrors Dick Cepek Rims, Michelin tires LTX, ( that last 100,000 miles) Now running Dynopro ATM mud and snow tires KN cold air intake Cat back exhaust with ss exhaust tip, Raised exhaust tail pipe to 2" below body line Optima*dry cell battery,red top Alpine sirius radio, 200 watt amp, focal is165 split door pod speakers Focal door speakers Subwoffer behind seat Viper alarm, Electric Locks Dark tinted windows, 4runner bucket seats, Tacoma Rubber floor mats TRD fender extenders, Bilstien shocks chrome push bar, chrome nerf bars, add a leaf for rear springs trailer iv hitch, electric brake control, Drilled slotted brakes, High carbon steel (MUST DO) EBS green stuff 7000 series pads(MUST DO) TRD engine oil cap TRD stick shift, Rear sliding window 2002 4Runner functional hood scoop cut into Tacoma hood, 4Runner dual overhead map light Gentex Auto dim + Compass + Temp, garage,rearview mirror Corbeau bucket seats Snow Methonal kit stage 2 Champion 3 core aluminum radiator Linex bed liner
  5. Nov 11, 2018 at 7:41 PM
    #5
    BikerinBlak909

    BikerinBlak909 Well-Known Member

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    1997tacomav6 [OP] likes this.
  6. Nov 11, 2018 at 7:47 PM
    #6
    1997tacomav6

    1997tacomav6 [OP] V6 5sp,RegCab,TRD Supercharger,2"pulley,meth, 650k

    Joined:
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    Vehicle:
    97 reg cab, v6 5sp 300hp supercharged, Methonal Injection, 650,001 plus miles, Original Owner
    V6 5sp,RegCab,TRD Supercharger, 2" pulley, methanol injected AC TRD supercharger,(MUST DO) TRD supercharger ported, rebuilt 3 times over 500,000 miles, every 125,000- 150,000 needs rebuild Projector headlights HID 5 speed manual Amsoil for all drive train Smaller 2” pulley,(300hp) (MUST DO) 2004 DESNO fuel injectors, zero ping ping, 2004 side door mirrors Dick Cepek Rims, Michelin tires LTX, ( that last 100,000 miles) Now running Dynopro ATM mud and snow tires KN cold air intake Cat back exhaust with ss exhaust tip, Raised exhaust tail pipe to 2" below body line Optima*dry cell battery,red top Alpine sirius radio, 200 watt amp, focal is165 split door pod speakers Focal door speakers Subwoffer behind seat Viper alarm, Electric Locks Dark tinted windows, 4runner bucket seats, Tacoma Rubber floor mats TRD fender extenders, Bilstien shocks chrome push bar, chrome nerf bars, add a leaf for rear springs trailer iv hitch, electric brake control, Drilled slotted brakes, High carbon steel (MUST DO) EBS green stuff 7000 series pads(MUST DO) TRD engine oil cap TRD stick shift, Rear sliding window 2002 4Runner functional hood scoop cut into Tacoma hood, 4Runner dual overhead map light Gentex Auto dim + Compass + Temp, garage,rearview mirror Corbeau bucket seats Snow Methonal kit stage 2 Champion 3 core aluminum radiator Linex bed liner
  7. Nov 11, 2018 at 8:10 PM
    #7
    tony2018

    tony2018 Well-Known Member

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    Def should be added to @mechanicjon thread for tacoma parts. The hose attached to it should also be replaced.
     
  8. Nov 11, 2018 at 8:22 PM
    #8
    Woolybugger

    Woolybugger Well-Known Member

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    This is a super easy maintenance item. I have personally blown seals due to mud/grime buildup and it doesn't take much just a bit in the wrong spot.
    I ended up getting water in my wheel bearings on a trip and spent hours replacing all seals and bearings when I got home. My vent was completely clogged.
    Thanks for letting other people know.
     
    1997tacomav6 [OP] likes this.
  9. Nov 11, 2018 at 9:51 PM
    #9
    rickyg2008

    rickyg2008 Well-Known Member

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    Just purchased one thanks again
     
    1997tacomav6 [OP] likes this.
  10. Nov 12, 2018 at 5:48 AM
    #10
    tacoma665

    tacoma665 Well-Known Member

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    I would just like to add, to see if it is working, just push down on it with your finger. It should move freely up and down.
     
    Last edited: Nov 13, 2018
    Colchicine and BikerinBlak909 like this.
  11. Nov 30, 2018 at 7:49 PM
    #11
    1997tacomav6

    1997tacomav6 [OP] V6 5sp,RegCab,TRD Supercharger,2"pulley,meth, 650k

    Joined:
    Oct 5, 2013
    Member:
    #113940
    Messages:
    7,835
    Gender:
    Male
    First Name:
    John
    Denver
    Vehicle:
    97 reg cab, v6 5sp 300hp supercharged, Methonal Injection, 650,001 plus miles, Original Owner
    V6 5sp,RegCab,TRD Supercharger, 2" pulley, methanol injected AC TRD supercharger,(MUST DO) TRD supercharger ported, rebuilt 3 times over 500,000 miles, every 125,000- 150,000 needs rebuild Projector headlights HID 5 speed manual Amsoil for all drive train Smaller 2” pulley,(300hp) (MUST DO) 2004 DESNO fuel injectors, zero ping ping, 2004 side door mirrors Dick Cepek Rims, Michelin tires LTX, ( that last 100,000 miles) Now running Dynopro ATM mud and snow tires KN cold air intake Cat back exhaust with ss exhaust tip, Raised exhaust tail pipe to 2" below body line Optima*dry cell battery,red top Alpine sirius radio, 200 watt amp, focal is165 split door pod speakers Focal door speakers Subwoffer behind seat Viper alarm, Electric Locks Dark tinted windows, 4runner bucket seats, Tacoma Rubber floor mats TRD fender extenders, Bilstien shocks chrome push bar, chrome nerf bars, add a leaf for rear springs trailer iv hitch, electric brake control, Drilled slotted brakes, High carbon steel (MUST DO) EBS green stuff 7000 series pads(MUST DO) TRD engine oil cap TRD stick shift, Rear sliding window 2002 4Runner functional hood scoop cut into Tacoma hood, 4Runner dual overhead map light Gentex Auto dim + Compass + Temp, garage,rearview mirror Corbeau bucket seats Snow Methonal kit stage 2 Champion 3 core aluminum radiator Linex bed liner
    Some how I got lucky with this rear axle seal leaking.

    I replaced the breather valve and the rear seal stopped leaking!


    So I cleaned the brake drum and shoes and The Whole area

    I must have gotten lucky for now, I’m guessing the pressure was pushing the seal open and then returned
    to it’s original location after the pressure was released.

    Now I get to return 250.00 worth of parts, gaskets, bearing, seals, shoes to toyota now.
     
    Last edited: Dec 1, 2018
  12. Nov 30, 2018 at 8:52 PM
    #12
    turbodb

    turbodb AdventureTaco

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    AdventureTaco
    This is another great reason to do the rear diff breather mod. Gets the breather up out of dirt/dust, and even more importantly out of water should you go through a deep water crossing. You don't want to suck water in your rear diff!

    Rear Diff Breather Mod - Why didn’t I do this sooner?

    [​IMG]
     
  13. Dec 1, 2018 at 8:01 AM
    #13
    drr

    drr Primary Prognosticator

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    If gear oil was leaking past the axle seal, that means it was also leaking through the sealed wheel bearing and would have displaced the grease inside. Your wheel bearing's days are numbered, I would keep all that stuff as it'll probably start howling soon...
     
    1997tacomav6 [OP] and cruiserguy like this.
  14. Dec 1, 2018 at 9:27 AM
    #14
    1997tacomav6

    1997tacomav6 [OP] V6 5sp,RegCab,TRD Supercharger,2"pulley,meth, 650k

    Joined:
    Oct 5, 2013
    Member:
    #113940
    Messages:
    7,835
    Gender:
    Male
    First Name:
    John
    Denver
    Vehicle:
    97 reg cab, v6 5sp 300hp supercharged, Methonal Injection, 650,001 plus miles, Original Owner
    V6 5sp,RegCab,TRD Supercharger, 2" pulley, methanol injected AC TRD supercharger,(MUST DO) TRD supercharger ported, rebuilt 3 times over 500,000 miles, every 125,000- 150,000 needs rebuild Projector headlights HID 5 speed manual Amsoil for all drive train Smaller 2” pulley,(300hp) (MUST DO) 2004 DESNO fuel injectors, zero ping ping, 2004 side door mirrors Dick Cepek Rims, Michelin tires LTX, ( that last 100,000 miles) Now running Dynopro ATM mud and snow tires KN cold air intake Cat back exhaust with ss exhaust tip, Raised exhaust tail pipe to 2" below body line Optima*dry cell battery,red top Alpine sirius radio, 200 watt amp, focal is165 split door pod speakers Focal door speakers Subwoffer behind seat Viper alarm, Electric Locks Dark tinted windows, 4runner bucket seats, Tacoma Rubber floor mats TRD fender extenders, Bilstien shocks chrome push bar, chrome nerf bars, add a leaf for rear springs trailer iv hitch, electric brake control, Drilled slotted brakes, High carbon steel (MUST DO) EBS green stuff 7000 series pads(MUST DO) TRD engine oil cap TRD stick shift, Rear sliding window 2002 4Runner functional hood scoop cut into Tacoma hood, 4Runner dual overhead map light Gentex Auto dim + Compass + Temp, garage,rearview mirror Corbeau bucket seats Snow Methonal kit stage 2 Champion 3 core aluminum radiator Linex bed liner
    Ok, I’ve put 2000 miles or so on it from when I installed the new breather valve and no leaking or noises, I will keep an eye on it
     
    drr likes this.
  15. Sep 9, 2019 at 7:42 AM
    #15
    turbodb

    turbodb AdventureTaco

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    AdventureTaco
    (for people who search in the future and find this thread...I know Timmy the Toolman has detailed videos for this job, but I thought it would be nice to have a printable step by step write-up to follow as well)

    Just a heads up that I had to replace the rear axle seals on my 3rd gen 4Runner and 1st gen Taco - both in the last month. Required a few special tools, and of course the requisite parts, but was a reasonably straight forward job (full story).

    Wrote up the list of tools needed, all the parts (with numbers) and a detailed step-by-step guide in a printable format here:


    [​IMG]
     
    Last edited: Sep 28, 2019
    Colchicine and CS_AR like this.

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