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Revo diff problems - 04-15-2006, 04:31 PM

Hey, I'm in the process of rebuilding my Revo since I got my parts in today

But the front and rear diffs are giving me trouble

I got the gears in, diff fluid in, and the pinion/ring gear is on

But either it won't move at all,or moves a little, then locks, and only goes back and forth to a certain point

So I loosen the screws, and it works fine

Then I put the diff inside the case thing, and tighten it down, then it does the same thing, even if I loosen the screws all around

I got it to where the diff is fine, until I put it in the housing, then the same thing happens


Any idears whats wrong?




Sorry about the double post, after I clicked post, it went to an error screen, so I did it twice
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04-15-2006, 04:45 PM

is the pin that sits in the back of the sun gear ( the two Bigger gears inside the diff) Lined up and sitting correctly in the slot in the back of the gear????

I know its happend to me a few times , everything will work fine till i tighten it up, then its locked... Usually its that pin coming outta the slot and jamming things up


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04-15-2006, 05:12 PM

When everything is tightened up, there is a little play in the pinion gear. It can slide in and out just a tad in the housing. If you push it in, it'll bind and lock up. If you pull it out, everything will spin freely. Mine did that too when I was rebuilding my spare diffs a few days ago. I wouldn't worry about it too much. Once installed in the truck you'll be fine. Mine works .


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04-15-2006, 08:15 PM

Yeah, I rebuilt both diffs and it was fine

Thanks for the quick replies

But installing the tranny trying to get the brakes attached to the rear diff has forced me to make my wheel wrench a hitting and throwing wrench

It usually goes together fine, I dunno what's with it tonight
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04-15-2006, 11:54 PM

I got another problem

When I'm trying to get the tranny installed, it just won't go in because the center front driveshaft assembly is too long, while the center rear driveshaft assembly is too short

i don't know what is wrong with it, it all flew together before

Anyone have this problem?
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04-16-2006, 07:34 AM

When you attached the half shafts onto the tranny, you probably put them backward. Front and rear center driveshafts are different lengths.


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04-16-2006, 09:01 AM

Yeah..Last night, sitting in bed, it just hit me

I dunno why I could never think of it before..Stupid me



Thanks for the help anyway
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04-16-2006, 10:11 AM

lol!!!!!!


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04-16-2006, 10:44 AM

I hate it when you just cant get something right and then it hits you at some crazy hour when you just dont have the time to work it out! it happens almost every day at work for me!
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04-16-2006, 10:52 AM

Got another stupid problem

Front body post won't screw in..Know why? Cause there's no hole to screw it in!

I have no idea how this happened, I made sure the diff was pointing up the right way, looked around, but still no hole to screw it in?!


Edit: And don't ask me how it screwed in before!

Last edited by Bikerman : 04-16-2006 at 11:04 AM.
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04-16-2006, 11:31 AM

turn the post around 90 degree's
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04-16-2006, 12:10 PM

dont you mean 180 degrees?


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04-16-2006, 12:39 PM

What do you mean?

I have the post going in right, and it's on the spot for the hole in the chassis, but there's no hole on the diff or bulk to thread in a screw

I feel like such a newb now
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04-16-2006, 01:13 PM

Quote:
Originally Posted by rocco79
dont you mean 180 degrees?
If its body mount holes then its drilled all the way through so it should still be there on either side. If its not on the 1 side turn it 90 degree's and it should be there.
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04-16-2006, 01:13 PM

Quote:
Originally Posted by Bikerman
What do you mean?

I have the post going in right, and it's on the spot for the hole in the chassis, but there's no hole on the diff or bulk to thread in a screw

I feel like such a newb now
Im very confused. Can you take a picture at all so we can solve your problems?
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04-16-2006, 06:51 PM

Here you go..Sorry about all the confusion

The way the front body post should sit installed


Spot where the screw goes in to hold the post down(In between the 2 square things)


Front bulkhead


The way the body post should sit on the diff



My question is-Where is the hole for the screw to thread in?

I can't have switched the front and rear bulks/diffs..And I dunno what else could cause this
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