Rear Diff doesn't spin freely...
 

Last week, someone posted on here about their diff's not spinning freely. I just rebuilt mine with the AE 0.5MM shims and now I'm having a similar issue. I didn't realize until I put mine all back together. The front tires were hard to turn. They felt like the diff was binding. To figure out where it was happening, I started by decoupling the belt from the front diff. The diff spins freely now that it's not connected to the topsahft. Then I went to the back diff and found it wasn't spinning near as free as the front. So I backed off the V2 spring on my V2 Center Diff. Once I removed the spring, the back diff spins as free as the front. As soon as I put the spring back on and tighten it a couple turns, not all the way, maybe 3 turns, the back diff is stiff again and hard to turn.

So, my question is, is that normal? When the spring is compressed, should the wheels be harder to turn than when it's not connected? If the back is "binding", then that explains why my front feels stiff once I connect the belt to the topshaft.

Again, diff's spin freely on their own. I have the tensioner set to spot 4, second from the top, so that shouldn't be too tight. I've backed off the screws on the tranny cases. Topshafts don't look bent at all. Maybe all this is normal and I just didn't realize it before. But thought I'd throw it out to all you experts out here.

Pretty much..:lol::lol:

what size nut drivers do you need for the sc10 4x4 factory team kit truck?

Check your inner spacer that goes between the bearing and the thrust washer. sounds like your thrust washer is hitting the trans case. Try adding a small axle shim there to see if that helps.

Cus can beat your ride with ......:lol:

I'm certain my dad can whip your dad too, tough guy.

Seriously..:lol:..the SC10 jumps like..well you know..I guess it jumps ok..compaired to a 2wd SC..:lol:

Haven't you built a normal kit?

-5.5mm /7mm nutwrench
-1.5mm/2.0mm/2.5mm Hexbit
Wakarimasen.

Now, try in english.

Well you did asked how i would know ?:ha:

Pardon

I can't resist teasing old guys :o

Thanks Cameron. I just looked and I don't have any axle shims. I'll stop at the LHS tomorrow to see if they have anything.

Should the shim go between the spacer and the bearing, or between the spacer and the thrust washer? Or does it matter.

The V2 should have come with a machined spacer that goes on the shaft first. If something happened to that then the thrust washer would drag on the transmission housing. Could cause the drag you are describing. That is why I suggested testing with a couple of extra shims. If that fixes the issue then I would contact RCShox for another spacer.

You are an old guy..so you tease yourself..:lol:

You and I are going to be here 25 years from now and i'm going to quote that at you, so we can have a good laugh. :p

Dammm..I have zero motivation to finish building my FT..:cry:

Send it to me I'll finish it :D