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  1. #1
    Join Date
    Oct 2011
    Location
    Northshore - Great Lakes
    Posts
    803

    Default 2001 V70XC - Angle gear o'ring at adjusting nut letting the fluid leak

    The fine space between the adjusting nut #14 and angle gear housing is making bottom of AG wet-to-a-drip.
    Is item #12 failing. How to scope the task and what to include while I am there. Is there a kit?

    Is it a screw off-on type replacement/repair?
    2001 V70XC - Nautic Blue/ 2-tone Sand/ Premium/ Instant MPG 12 - 63/ Pirelli P4 12/32" - 740/ Duracell 48/ MOBIL-3309/ Pennzoil EURO 5W-40/ Zimmerman Z-coated/ Akebono/ 190K-mi/ Great Lakes

  2. #2
    Join Date
    Dec 2009
    Location
    GA
    Posts
    1,332

    Default

    Quote Originally Posted by Xheart View Post
    Is it a screw off-on type replacement/repair?
    Easy, just mark and measure before removing nut
    [ATTACH=CONFIG]7560[/ATTACH
    Attached Thumbnails Attached Thumbnails bgrepair2.jpg  
    Last edited by hoonk; 11-25-2015 at 03:09 PM.

  3. #3
    Join Date
    Mar 2015
    Location
    Sammamish
    Posts
    404

    Default

    I had a minor leak here too.
    I used a regular hammer and rubber tipped tool from the oem tool kit to move the part "one notch".

    Why one notch?
    It's my understanding that this device is apart of a preloaded mechanism in the transfer case- so I only felt comfortable going with a "notch".

    20k miles and it's still leak free (knock on wood).

  4. #4
    Join Date
    Feb 2013
    Location
    Boston, MA
    Posts
    1,156

    Default

    Mine leaks too. Replaced the smaller seal, to no difference. Did you "screw" it in by one notch?
    2002 V70 (sold)
    2005 XC70 (Telos Road took it. Did a chassis swap)
    2016 XC60

  5. #5
    Join Date
    Feb 2010
    Location
    Virginia Beach
    Posts
    3,874

    Default

    Could be item 3, the seal....

    If the angle gear is overfilled - it will leak more easily...what's the oil level?
    Current Fleet:
    2016 Tundra Crewmax 4WD 1794
    2005 MB S600 (100K, Michelin AS3+, M1 0W40)
    2002 V70-XC (238K, Castrol Edge 0W40)
    2002 V70-T5 (195K, IPD bars, Bilsteins)
    2001 V70-T5 (76K)
    1932 Packard Sedan (straight 8, dual sidemounts, original paint and interior, Shell Rotella 15W40)

  6. #6
    Join Date
    Oct 2011
    Location
    Northshore - Great Lakes
    Posts
    803

    Default

    I had drained and filled AG carefully with proper amount - close to 680ml - some 2 years ago.
    I first noticed the wetness during the oil and filter change in summer.

    While on the ramp, removed the filler bolt and it dripped very slowly. Satisfied that there wasn't a dry condition, I cleaned and use my chalk method to cover the surface to help determine the flow and source.

    Found 2 drops on garage floor past weekend. Chalk markers have washed away.

    Block vent causing AG fluid heating, etc?
    Last edited by Xheart; 12-01-2015 at 07:06 AM.
    2001 V70XC - Nautic Blue/ 2-tone Sand/ Premium/ Instant MPG 12 - 63/ Pirelli P4 12/32" - 740/ Duracell 48/ MOBIL-3309/ Pennzoil EURO 5W-40/ Zimmerman Z-coated/ Akebono/ 190K-mi/ Great Lakes

  7. #7
    Join Date
    Mar 2015
    Location
    Sammamish
    Posts
    404

    Default

    Quote Originally Posted by Xheart View Post
    I had drained and filled AG carefully with proper amount - close to 680ml - some 2 year ago.
    I first noticed the wetness during the oil and filter change in summer.

    While on the ramp, removed the filler bolt and it dripped very slowly. Satisfied that there wasn't a dry condition, I cleaned and use my chalk method to cover the surface to help determine the flow and source.

    Found 2 drops on garage floor past weekend. Chalk markers have washed away.

    Block vent causing AG fluid heating, etc?
    I think that's very possible.


    Seal leakage is also a symptom of fluid that's been overworked.
    I have the data at home regarding the failure mode of differential fluid and it's influence on component and seal degradation-one of the main contributors for my switch 75w-140...It has a greater capacity to resist oxidation than 75-90.

    I'll get the data when get home.

  8. #8
    Join Date
    Oct 2011
    Location
    Northshore - Great Lakes
    Posts
    803

    Default

    Quote Originally Posted by Iroll_ View Post
    I think that's very possible.
    Seal leakage is also a symptom of fluid that's been overworked.
    I have the data at home regarding the failure mode of differential fluid and it's influence on component and seal degradation-one of the main contributors for my switch 75w-140...It has a greater capacity to resist oxidation than 75-90.

    I'll get the data when get home.
    I have a bottle of Volvo fluid PN 31259380. Is it 75w-140 grade?
    My next step is to drain and refill with new 75w-140 grade fluid.
    2001 V70XC - Nautic Blue/ 2-tone Sand/ Premium/ Instant MPG 12 - 63/ Pirelli P4 12/32" - 740/ Duracell 48/ MOBIL-3309/ Pennzoil EURO 5W-40/ Zimmerman Z-coated/ Akebono/ 190K-mi/ Great Lakes

  9. #9
    Join Date
    Mar 2015
    Location
    Sammamish
    Posts
    404

    Default

    OEM is 75-90.
    I am a proponent of a quality synthetic 75-140 in the angle gear as it resists shearing and oxidation more so than 75-90.
    Ford uses a similar angle gear set up in some of it's cross overs-they spec 75w-140.

  10. #10
    Join Date
    Feb 2010
    Location
    Virginia Beach
    Posts
    3,874

    Default

    Grade/viscosity has nothing do with oxidation resistance.

    Changing the fluid before the additives wear out is how you avoid oxidation.

    Going heavier in grade isn't always "better". This is effectively splash lubricated. So, thinner might be better given the size and load on this assembly.
    Current Fleet:
    2016 Tundra Crewmax 4WD 1794
    2005 MB S600 (100K, Michelin AS3+, M1 0W40)
    2002 V70-XC (238K, Castrol Edge 0W40)
    2002 V70-T5 (195K, IPD bars, Bilsteins)
    2001 V70-T5 (76K)
    1932 Packard Sedan (straight 8, dual sidemounts, original paint and interior, Shell Rotella 15W40)

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