This is a video I made while replacing the rear differential pinion seal on a GMC truck. I did this one without removing the rear diff cover, but you can do …
Rear Differential Pinion Seal Replacement
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- Tags:
differential, pinion, Rear, Replacement, Seal
- Categories: Hummer
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do you have one replacing the bearing.thank you
Great Video…you know your stuff….have a question for you….where can i
send it?
@Diezeltube Yes, this one was definitely leaking. The outside of the diff
was wet, especially on the front around the seal.
Thanks, dude.
what kinda fluid does it take when you fill it back up?
If the entire pinion moves all around, it’s not always the bearings, at
least I don’t know about these newer Chevs, but my ’88 Ford F150 had that.
When I poped everything out, bearings look great, so I replaced the pinion
collapsible spacer, and it was good to go, torqued and on the road I go!
Thanks a ton, had to replace mine on my wrangler, and everything worked out
the same.
you have a weird intro, but the videos are good.
well since I am an auto tech, I guess that qualifies me as an expert on
this stuff now doesn’t it…
@richu27 The whole vehicle was rocking. The legs of the lift flex a little
bit.
actually yes…RTV for the diff cover is sufficient because the surrounding
bolts are torqued and hold it firmly to a flat surface…using it on a seal
as he did is no rcommended and neither is putting it on splines of the
pinion gear and yoke…the pinion seal is sufficient, most wear out from
age and insufficient breather flow…they get blown out…
I’m curious how you determine which RTV to use. I did a waterpump and
thermostat on a SBC a couple days ago, and used black based on yer video,
and it worked great. Is it all just temp based?
From a non-mechanic. I thank you this vid saved me $. I used your tips to
change out my leaky seal on my Ram 1500. Keep up the good vids.
do i have to drain the diff oil out to do this
I’m not an expert but pinion nut need to be hit with a chisel in two places
so it does not unscrew.
ill be a long time before i do business with GM again!
Great video, except for the part where you counted the threads on the
pinion? You should torque the nut to the correct value and check the
bearing preload.
not too bad of a job, i have to do this to my ranger
@hp11208 It is best to pull the cover on the rear to drain it all before
changing the seal. If you have fluid running out the front when you pull
the seal like I did, you must have it clean & dry before installing the
seal, or you may have a repeat problem.
Is the pinion nut 35mm? Great video by the way.
can you get the pinion bearing out this way? my bearing is shot 91 gmc k1500
Here is a seal removing tip; You know how sometimes the seal is SO stuck
you end up ripping it apart getting it out? Take a punch and drive the seal
in ever so slightly in a few spots before you pull it out. I’m talking 1/16
of an inch or so. It establishes movement, and the seal comes right out
without a fight.
Gonna go do this job on mine! Wish me luck. lol
Thank you for this video .
@beefystik I always prefer black RTV, except for some exhaust gaskets,
where I prefer red. Gray is my second favorite for general use & it’s all I
had at the time I made this video.
Thank you for this vid. It’s no BS. All detailed and explained well enough
without any non-sense. Straight and to the point. Excellent!
Very good video
Thanks a lot for making this video!! It helped me do the seal on my truck!
I really appreciate it!
Ya I wondered bout the RTV and the Impact
Thanks.
GMC recommends using OEM gasket. They have a metal band inside. I had my
gasket replaced, the shop used aftermarket gasket without the steel band,
it leaked. With OEM part, dry like the dessert.