Re: RE: $#@$#@ rear diff

From: Matt Beazer (teseract@moparhowto.com)
Date: Sun Aug 09 2009 - 10:48:56 EDT


Pulled the diff cover off today while waiting for the truck to cool off
enough to do the front steering stuff. Got the diff mating surfaces and
the cover really clean, cleaned the surfaces with brake cleaner and let
'em dry, then used a whole bunch of orange RTV on it. It took me
forever to finish the front steering stuff so it got to sit a good 8
hours and cure before I put the gear lube (this time with a tube of LSD
additive to be safe) into it. Seems to be ok so far.

BTW, don't buy anything from ok4wd.com. I ordered that gasket for the
rear diff I was talking about late in the evening on 7/30, paid extra
for 2 day shipping, and it's still not arrived. This is despite an
e-mail status update from them on 8/3 that it finally shipped 2 day
shipping. I sent an e-mail asking for the tracking number and of course
no one has bothered to reply. Sheesh. Talk about not wanting return
business.

MattB

jon@dakota-truck.net wrote:
> "Brian" <hskr@cox.net> wrote:
>
>> " It's leaking out the bottom out one of the bolt
>> holes I think."
>>
>
>
>> That's where the part about blowing out the bolt holes with the air comes
>> in. I shoot some brake cleaner in each hole, and then blow it out with air
>> to make sure the holes are clean and dry. Also when I run the bead of RTV,
>> I usually just play connect the dots with the bolt holes and run the bead
>> over the holes so RTV gets on the threads to seal the holes.
>>
>
>
> IMHO, it would be better to prevent the fluid from reaching the bolt
> holes at all, rather than trying to seal them once it does. (If you
> run the RTV inside the bolt holes, the fluid should never get there.)
>
> Matt, if you'd rather not deal with pulling the cover and re-doing
> everything, if you can find which bolt hole(s) the fluid is leaking
> from, you might want to try removing the bolt, squeeze a little RTV in
> there and re-install the bolt. Then add your friction modifier and
> top off the diff, if necessary. As long as you make sure to get RTV
> in the hole itself and also a bit under the bolt head, that should
> stop the leak if that is where it is coming from. Anyway, it'd be
> easy and cheap to try, then you can use the proper RTV pattern the
> next time you change the fluid.
>
>
>



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