Differential not engaging

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dragos28

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Hey fellas I've finally got the engine back from the mechanic and it was a major PITA to get it mounted but i finally got it on there. Now the problem is that the engine spins the centrifuge and spins the axle but the wheels will not engage. You can actually spin them back words while revving the engine at full throttle. ...

I have a video uploading shock ill link shortly.

uploadfromtaptalk1382982409471.jpg

This is where they are two small Allen wrench style bolts that I've attempted to tighten but did not do anything.

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rocketkart

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see if your hubs on the rims have a keyway slot more than likely thay do seeing your axle is a solid axle.
 

itsid

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stop trying!

Disassemble the differential first, I think you might broke one or two teeth..
with a bit of luck, just one of the gears inside;
if you keep trying you'll break all the others as well.

This diff is not available anymore, and spare parts are getting rare.

So remove it from the kart and open the case,
this is what you should see:
diff_guts.jpg

Best of luck for tracing the broken part (I don't know any source unfortunately)
grease and sealant can be found at
http://www.mfgsupply.com/gomini/gominiaxles/gominiaxlesdiff.html


If you are unlucky with repairing your diff, get a straight axle
or try this (much lighter duty mower diff)
http://www.northerntool.com/shop/tools/product_35768_35768

'sid
 

dragos28

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Lol i was jusy watching that on YouTube!

So i took it all apart and everything is good.
uploadfromtaptalk1382992851281.jpg

uploadfromtaptalk1382992870655.jpg

All the cogs/gears are intact and move freely.
The only thing i noticed is that the left axle did not have the saftey clamp on the end of the shaft, like in picture #2. Its my assumption that it might have shifted out of the cog and the right axle was not able to engage. ..

uploadfromtaptalk1382992979953.jpg

Ill take a trip to the hardware store and pick up a saftey clip and reassemble it. Also pack a bunch of grease in it and on the shafts.

I believe that the previous owner had tinkered with it because one of the brackets holding the axle was missing a bolt.

If its just missing the clip, then i'll get off really really cheap! lol.. fingers crossed!

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dragos28

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I think i might have taken the differntial apart for nothing... well i guess it doesnt hurt that i filled it up with grease.. but it looks like im missing the little square metal block that fits inbetween the shaft and gear..

uploadfromtaptalk1383005608208.jpg

Also i will need the little screw that goes here

uploadfromtaptalk1383005648512.jpg

Soo close to riding...

uploadfromtaptalk1383005681586.jpg

Can anyone direct me to where i can find and order the block and the bolt please.
 

OzFab

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I remember this setup. I mentioned previously that I though it was a split axle setup; can you now confirm the axle setup? Does it have full length axles? If so, what art the sections beyond the centre that look like a collar?
 

itsid

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judging by that everything looks perfect,
it's perfectly normal that you can stop any one wheel with a diff more or less effortlessly; you just should try to stop both, since then you'll have the engine working against you :D
wonder if i can weld it solid...... hmmm...
you can, you shouldn't!
As mentioned, these things get rare..
if it breaks, clean the parts and sell them, get a 1" live axle and use that instead of a differential.

....

Ill take a trip to the hardware store and pick up a saftey clip and reassemble it. Also pack a bunch of grease in it and on the shafts.

I believe that the previous owner had tinkered with it because one of the brackets holding the axle was missing a bolt.

If its just missing the clip, then i'll get off really really cheap! lol.. fingers crossed!
perfect!
clean fresh grease if always a good thing ;)
I think i might have taken the differntial apart for nothing... well i guess it doesnt hurt that i filled it up with grease.. but it looks like im missing the little square metal block that fits inbetween the shaft and gear..
:lolgoku:
well.. yes some keystock might help here ;)
But that's okay, just a small part
http://www.bmikarts.com/search.asp?keyword=keystock
(I don't know the size you need)
But I'm sure you'll find it in almost any hardwarestore as well, it costs next to nothing, so you can even buy a variety of sizes to test if you can't measure correctly what you need.

As for the bolt (which isn't a bolt but a set screw that goes in there)
my best guess is it's a 3/16th (it should only prevent the keystock to fall out, no big force needed)
but you should take the sprocket of and see what fits in right in the hardwarestore :D


'sid
 

rocketkart

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the block thing you are referring to is called a key way. it is probably a size 1/4 kay way shud work you can get them at any hardware store/lawn mower repair shop for 50/75 cent.
 

machinist@large

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I think i might have taken the differntial apart for nothing... well i guess it doesnt hurt that i filled it up with grease.. but it looks like im missing the little square metal block that fits inbetween the shaft and gear..

View attachment 41691

Also i will need the little screw that goes here

View attachment 41692

Soo close to riding...

View attachment 41693

Can anyone direct me to where i can find and order the block and the bolt please.

Your local hardware store; will probably cost you around a buck total.
 
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