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Keep Getting Water in Rear Differential

Discussion in 'The Garage' started by BrianDamage, Nov 28, 2003.

  1. BrianDamage

    BrianDamage 1/2 ton status

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    Just got back from having my oil changed, and this is the 2nd time they have told me that my rear differential had alot of water in it. The first time was just month ago (put over 3000 miles on K5 in the past month). I haven't been any water that I know of (at least not off-road).

    What do I need to check and/or do to fix this? I've never done anything to a rear-end before (wait, that doesn't sound right /forums/images/graemlins/rotfl.gif ....ya'll know what I mean)...any advice apprecciated.
     
  2. y5mgisi

    y5mgisi 1 ton status

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    Make sure the vent hose is hookes up an that it goes up and has the little "hat" on the other end of it.
     
  3. Beast388

    Beast388 1/2 ton status

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    As already stated, check your vent tube on top of the diff. Make sure the connection at the diff is tight, there are no cracks or holes in the line and that the hose goes at least up to the frame.

    If not the vent tube, then maybe axle seals, but if water was getting in , gear lube would most likely get out. /forums/images/graemlins/thinking.gif
     
  4. R72K5

    R72K5 Banned

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    must be a fairy out there somewhere who lieks to put water into your diff,

    hmm..

    where all do you drive your rig at ?
    at the local swimming hole ?


    definitely check out your diff vent hose,something is wrong somehow

    not sure why or how you get water in your axle so easy, thats pretty crazy...
     
  5. BrianDamage

    BrianDamage 1/2 ton status

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    [ QUOTE ]
    must be a fairy out there somewhere who lieks to put water into your diff,

    hmm..

    where all do you drive your rig at ?
    at the local swimming hole ?


    definitely check out your diff vent hose,something is wrong somehow

    not sure why or how you get water in your axle so easy, thats pretty crazy...


    [/ QUOTE ]


    that's one reason I'm stumped I guess. I haven't had it off road any. Just back & forth to work (92 miles + a day). It's rained several times, but surely just driving on the road in the rain wouldn't do this, would it?

    Guess I'll write down "fairies" as a possible cause, since like I mentioned earlier, I knew that I haven't driven through any water, or swimming holes for that matter. "hmmm...." /forums/images/graemlins/rolleyes.gif
     
  6. bigblock44k5

    bigblock44k5 1/2 ton status

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    next time change it yourself and see if there really is water getting in, or if they just want you to keep coming back.
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    next time change it yourself and see if there really is water getting in, or if they just want you to keep coming back.

    [/ QUOTE ]

    My thoughts exactly. Why do you think there is water in your diff?

    In all the times I've driven in deep water, my lines are only about 2' above the axle and I've never managed to get water in either differential.
     
  8. Desert Rat

    Desert Rat Fetch the comfy chair

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    One thing I've seen is the fitting that your vent line attaches to on the top of the diff can strip out. If that fitting is loose, you could get water seeping into it while driving in the rain. But, I can't see it filling it up. I'd start by unscewing that fitting and making sure it is tight. If it has some play, you can probably seal it up with some teflon plumbers tape. Then I would do as everyone says and make sure your vent line runs as high as physically possible. I run mine up across the top side of the gas tank and to the rear near the bumper. I cap mine off with a VW gas filter.
     
  9. Confedneck

    Confedneck 3/4 ton status

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    ive played in about 2 and a half feet of water in my truck with no lift and 33s, and never gotten water in either differential, never got any in my toyota either playing in deep water...im willing to bet they are after your nice wallet..
     
  10. bryguy00b

    bryguy00b 3/4 ton status

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    also make sure there are no leaks in your cover to housing mating..ive had that happen quite a few times, for some reason i have a hard time getting it not to leak on the rear axle...but if thats leaking any you will defenetly get water in there..
     
  11. boggerless

    boggerless 1 ton status Premium Member

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    some of those oil change places are pretty shady.the last time i was at one a co-worker and i took the manager's car.as we sat there a escort pulled the bay next to us,the guy under the car started yelling out ,draining #1,draining #2,etc.i looked down and the guy was just leaning against the wall smilling at me,not doing s**t.then the ass-f**k doing the car we were in went through his little saftey check. when he got to the head lights TY couldn't find the switch to turn them on and the guy said O.K. they are good /forums/images/graemlins/confused.gif.i wouldn't let them change my lawn mower oil. hell firestone striped out my motherin laws drain plug last year. /forums/images/graemlins/k5.gifto /forums/images/graemlins/truck.gif
     
  12. NITRO

    NITRO 1/2 ton status

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    *HIJACK*
    hey now. mayb that was your one bad experience...which i understand...but i work at Jiffy Lube and would never, never think about doin a thing like that. our store is rather small having only one bay, but the customer is there the whole time watchin what we do. we even have had people who we know will question what we do come down into the pit to watch everythin that happens. but i know where you come from about them not doin the everything or half-assing something. our only real competition in town is wal-mart, and we get all of their F*ck-ups. ok...sorry....*rant and hijack off*

    NITRO
     
  13. CHEVY 4WD

    CHEVY 4WD 1/2 ton status

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    Change the fluid your self, use RVT silicone to seal it up(dont be shy with it) and check your vents
    Are you running a full floating axle? If you are take the shafts out and RVT them too, does your truck leak any gear oil EVER?
     
  14. boggerless

    boggerless 1 ton status Premium Member

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    your right not every place sucks. hell say service station and people think of goober from mayberry, my friend owns an amoco full service with two great mechanics. /forums/images/graemlins/k5.gifto /forums/images/graemlins/truck.gif
     
  15. kennyw

    kennyw N9PHW Premium Member

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    duplicate post
     
  16. kennyw

    kennyw N9PHW Premium Member

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    Do you have a 14FF? When you drain the differential on a 14FF there is still oil in the wheel bearing hubs that is not drained. If water contaminated oil is hiding in the wheel bearing hubs then it is refilled and driven that will mix with the new differential oil and look like you got more water in it when it was never actually all taken out.

    If you have a 10, 12, or 14 bolt semi floating axle none of this applies.

    How did you get water in it the first time?
     
  17. BrianDamage

    BrianDamage 1/2 ton status

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    [ QUOTE ]
    Do you have a 14FF? When you drain the differential on a 14FF there is still oil in the wheel bearing hubs that is not drained. If water contaminated oil is hiding in the wheel bearing hubs then it is refilled and driven that will mix with the new differential oil and look like you got more water in it when it was never actually all taken out.

    If you have a 10, 12, or 14 bolt semi floating axle none of this applies.

    How did you get water in it the first time?

    [/ QUOTE ]

    just the stock axles (10 bolt)


    I might have gotten water in there the first time at least by just driving through a puddle while hunting....but I know for sure I haven't been in anything since I had them service it the first time.

    I parked in the garage the other night and had no visible leaks on the concrete. Think I'll take the advice of taking the cover off and rtv'ing the hell out of it

    when I goto replace the vent tube, is just regular vacuum tubing OK? Are those little top hat things replaceable? (somebody mentioned something about a VW filter?)
     
  18. k20

    k20 3/4 ton status

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    For vent tube i went to autozone and bought 3/8" transmission cooler line. Got like 5ft of it for 4 bucks. I got a 5ft vent tube now lol.
     
  19. GMCLegacy

    GMCLegacy 1/2 ton status

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    make sure there is actually water mixed in with the gear lube, some of the cheap gear lube (walmart's super tech) is very foamy if you check the fluid level after recently driving the truck. drain the fluid in a clear container of somesort so you can actually see if there is water. i cant see water getting in the diff just by driving in the rain.
     
  20. jeremy91k1500

    jeremy91k1500 Registered Member

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    [ QUOTE ]
    *HIJACK*
    hey now. mayb that was your one bad experience...which i understand...but i work at Jiffy Lube and would never, never think about doin a thing like that. our store is rather small having only one bay, but the customer is there the whole time watchin what we do. we even have had people who we know will question what we do come down into the pit to watch everythin that happens. but i know where you come from about them not doin the everything or half-assing something. our only real competition in town is wal-mart, and we get all of their F*ck-ups. ok...sorry....*rant and hijack off*

    NITRO

    [/ QUOTE ]

    i too worked for Jiffy Lube in Indiana. if your store is owned by Hoosier Lubrication, or whatever the company Steve Saner runs is called, you ARE A ripoff store. i was fired for being honest to my customers, many of which were faithful customers to the store i worked at. alot of this had to do with the relationship i made with the customers, and the honesty i displayed towards them. if it didnt need replaced, and they asked my opinion, i gave them MY opinion. not the opinion that the management wanted me to give them. i was busted by a district manager, telling a customer (who owned an air filter that looked like brand new) that they did not need an air filter. i was fired on the spot. now you tell me, is Jiffy Lube an honest business?
     

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