User Tag List

Results 1 to 10 of 10

Thread: diff fluid change???

  1. #1
    JUST GUN IT!!!!
    Join Date
    Jul 2009
    Location
    Temple hills
    Posts
    1,026

    Branch
    Army
    Status
    Serving
    Served
    2006 to Present

    Closest Installation

    Fort Myer
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default diff fluid change???

    I wanna change the diff fluids in my 04 LJ it has the stock d44 and d30. I'm guessing all I have to do is take the drain plug out, take off the diff cover to make sure the insides look ok, put on a gasket/ silicone stuff, bolt the covers back on and fill them up. My questions are, what kind of diff fluids should I use, what kind of gasket I should use either cork, rubber or some tube silicone stuff and lastly do you have to have a pump to fill them up or is there another way to fill them.
    Thanks ahead of time for the help and advice
    If your not cheating your not trying and if you get caught your not trying hard enough

    www.thehighroad.org
    www.jeepriver.com
    www.jeepforum.com
    www.wranglerforum.com
    http://www.stu-offroad.com/
    http://www.jeep-tech-tips.com/

    /l ,[____],
    l---L -OlllllllO-
    ()_)-()_)-o-)_)

  2. #2
    Senior Member HillBillE's Avatar
    Join Date
    Jan 2008
    Location
    Duluth, MN
    Posts
    13,921

    Branch
    Army
    Status
    Served
    Served
    1985 to 1998

    Closest Installation

    Fort McCoy
    Mentioned
    66 Post(s)
    Tagged
    0 Thread(s)

    Default

    I use black RTV gasket maker, if I don't have a gasket. It works great for diff covers.

    Generally, diff's use 80W-90 or 75W-90. Some guys prefer Amzoil or other synthetic diff oil. (owners manual will have it listed)

    If the rear has a limited slip, make sure to use the additive for it, or the clutch pack will chatter, act up, and get ruined.

    Other than that, you're on the right track.

    Open, drain, inspect, bolt on the cover and fill.

    Shouldn't need a pump, although they are handy. Most of the quart jugs come with a 'pointed' top, so you can fill the diff's easier.


    As long as the people remain armed,
    government knows that it cannot rule over the people by force.
    Those who stand in defiance of unconstitutional laws
    do so out of duty, honor, oath and love of country.


    "Certified Jeep Junky!"


  3. #3
    JUST GUN IT!!!!
    Join Date
    Jul 2009
    Location
    Temple hills
    Posts
    1,026

    Branch
    Army
    Status
    Serving
    Served
    2006 to Present

    Closest Installation

    Fort Myer
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Thanks HB!! I didn't know about the additive for the limited slip. Maybe if I'm nice enough to house 6 she'll let me get heavy duty diff covers to help prevent trail damage that I may find
    Thanks again HB
    If your not cheating your not trying and if you get caught your not trying hard enough

    www.thehighroad.org
    www.jeepriver.com
    www.jeepforum.com
    www.wranglerforum.com
    http://www.stu-offroad.com/
    http://www.jeep-tech-tips.com/

    /l ,[____],
    l---L -OlllllllO-
    ()_)-()_)-o-)_)

  4. #4
    Senior Member jeepdreamer's Avatar
    Join Date
    Oct 2008
    Location
    Ft Myer, Va
    Posts
    9,106

    Branch
    Army
    Status
    Serving
    Served
    1991 to Present

    Closest Installation

    Fort Myer
    Mentioned
    92 Post(s)
    Tagged
    1 Thread(s)

    Default Forgot something little...

    And don't forget to clean! Wipe the cover and diff mating surface with cleaner ( I usually use carb or brake cleaner) to remove any gear oil or old gasket material. If it has gunk or fluid on you may not get a good seal when reinstalling th cover.
    I also use RTV Black... once the cover is all clean I run a bead around it, smooth it with my finger and let it set up for a few minutes. Then set the cover back on and retorque the bolts. DON"T over tighten them!
    Best of luck!

  5. #5
    Time n Money Ghost00TJ's Avatar
    Join Date
    May 2008
    Location
    Missouri
    Posts
    9,121

    Branch
    Army
    Status
    Retired
    Served
    1986 to 2008

    Closest Installation

    Fort Leonard Wood
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by HillBillE View Post
    I use black RTV gasket maker, if I don't have a gasket. It works great for diff covers.

    Generally, diff's use 80W-90 or 75W-90. Some guys prefer Amzoil or other synthetic diff oil. (owners manual will have it listed)

    If the rear has a limited slip, make sure to use the additive for it, or the clutch pack will chatter, act up, and get ruined.
    Quote Originally Posted by jeepdreamer View Post
    And don't forget to clean! Wipe the cover and diff mating surface with cleaner ( I usually use carb or brake cleaner) to remove any gear oil or old gasket material. DON"T over tighten them!
    x2
    F'it, aint my Jeep!
    Beer does a Jeep Good

  6. #6
    Land Squid Jeffb_79's Avatar
    Join Date
    May 2008
    Location
    Fairfax, VA
    Posts
    3,593

    Branch
    Navy
    Status
    Served
    Served
    1999 to 2010

    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    75w-140 synthetic gear lube. I get the cheap crap from walmart (forget the name, but it meets specs). You probably don't need to pull the covers off, unless there's no drain plug. I know the D44 has a drain plug, not sure about the D30 though.
    A bead of black RTV will work just fine as a gasket. If you want to spend more money, you could always order a set of lube lockers.

  7. #7
    Sunshine and Rainbows Rubitron's Avatar
    Join Date
    Apr 2010
    Location
    Fayetteville
    Posts
    506

    Branch
    Army
    Status
    Serving
    Served
    2004 to Present

    Closest Installation

    Fort Bragg
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by Jeffb_79 View Post
    You probably don't need to pull the covers off, unless there's no drain plug. I know the D44 has a drain plug, not sure about the D30
    I use the cover as the drain. TAKE OUT THE FILL PLUG FIRST!! You do not want to have the cover off and realize you can't put oil back in! To get the front fill plug out use a 3/8 drive ratchet with no socket on it. I think its the same on a D44 also, if not it's probably a rubber plug you can just pull out. If you have an owners manual it should tell you what viscosity to use. Lastly, the gas tank may interfere with the refilling process depending on how much lift you have (or don't have).

  8. #8
    Junior Member
    Join Date
    Jun 2008
    Location
    Wasilla
    Posts
    392

    Branch
    Air Force
    Status
    Serving
    Served
    2000 to Present

    Closest Installation

    Elmendorf AFB
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    I have an 06 LJ with the same axle combo. Both fill plugs are removed with a 3/8" ratchet (using a short extension on it makes it easier) The D30 is 75w-90 and the D44 is 75w-140 oil. Neither has a drain plug, you will have to remove them to drain the oil. It's best to remove the lower bolts and then loosen the uppers to allow the oil to drain. I use red RTV for gasket maker, but am sure black would work just as well. Definately clean the surfaces really well, I use brake cleaner. But make sure not to spray up and into the diff as there is a cavity in the back that the fluid will collect and it won't drain out. Give it time to evaporate, and throw it back together. Give the RTV a few minutes to set before adding the fluid. As for the additive, I've never used it for mine, but will be looking into it for the next change. And when tightening the bolts down, go in a star pattern like you would to put a tire on, otherwise all the RTV oozes out one side. I promise, you only make that mistake once (a few less beers and it probably wouldn't have happened that time). Good luck to you
    06 LJ | 4.0L | NSG-370 | D44/D30 w/4.88's | 4.5" RE Superflex lift | 35-12.50-15 Cooper STT's on 15x10 Cragan steelies | RockKrawler X-Factor steering | Shrockworks sliders | DirtWorx bumper/tire carrier | LockRite auto locker | Midland CB w/4 ft Firefly antenna | SOLID rear diff cover | DIY thumb throttle | 750w power inverter | Smittybilt XRC8 winch ...and GROWING








    http://wheelersforthewounded.org
    http://www.mississippivalleyjeepers.com

  9. #9
    JUST GUN IT!!!!
    Join Date
    Jul 2009
    Location
    Temple hills
    Posts
    1,026

    Branch
    Army
    Status
    Serving
    Served
    2006 to Present

    Closest Installation

    Fort Myer
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    thanks guys for the help i got teh front done today it took 2 trys. the bottom bolt started to leak after i got it back on the 1st time but the 2nd time around i smoothed the bead of gasket sealer around the cover making sure there was enough near the holes the 44 is tomorrow since i ran out of light today
    If your not cheating your not trying and if you get caught your not trying hard enough

    www.thehighroad.org
    www.jeepriver.com
    www.jeepforum.com
    www.wranglerforum.com
    http://www.stu-offroad.com/
    http://www.jeep-tech-tips.com/

    /l ,[____],
    l---L -OlllllllO-
    ()_)-()_)-o-)_)

  10. #10
    on top, usually
    Join Date
    Jan 2009
    Location
    Momence
    Posts
    2,460

    Branch
    Navy
    Status
    Serving
    Served
    2002 to 2010

    Closest Installation

    Fort Leonard Wood
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    i would seriously ante up the money for luberlock gaskets. most guys dont think about being on the trail and carrying extra rtv for a diff cover if it needs to be removed for a trail repair.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Get the MJ Supporter Membership for a little less than $0.06 a day and get more space, 2 MJ Stickers and no banners ads. [Check it out]