Does this look like normal pinion wear?

[Mongoose]

Does this pinion wear look normal or does it look like the pinion and spur are not square?

I can put a piece of paper between the two and there isn't any play between the two.

 

[Jerry-rigged]

I don't see any wear in those pictures...

 

[slick2500]

Looks like you might have got a clump of dirt or something small caught in there at some point, but other than that it looks good to me. And it looks like your center diff is leaking.

 

[Mongoose]

Thanks guys.

Well good news on the pinion but bad on the center diff leaking....glad I posted the pictures.

I think it may be excess MooSlick slinging off the spur and pinion because I did kinda of soak them...it's not too bad and not pooled up on the chassis.

If it is leaking, how do I go about fixing it? I planned on changing the fluid to 100k anyway...now would be a good time I guess.

However, I did notice a little bit of rust on that cup...what do you guys usually do there to prevent it? Seems like anything you put on would just sling off.

 

[Mongoose]

Also, do you guys put any lube on your upper hinge pins?

 

[slick2500]

Oh well it could just be the mooslick.
To fix that just tighten the 4 screws holding the diff together.

It looks like you still have the stock bearings in there, I would replace them with fast eddy bearings.

I use graphite lube, like the stuff for pinewood derby cars, and it works great.

 

[Mongoose]

Ok, I will check it out. I want to change the fluid anyway.

Is this the same stuff as you use?

 

[slick2500]

Ok, I will check it out. I want to change the fluid anyway.

Is this the same stuff as you use?

View attachment 15309

Yes sir.

 

[Mongoose]

Awesome! Thanks!