Levo Gen 3 Help installing GX t-type transmission.

[DirkWisely]

I'm stumped on how to proceed here. From what I can tell I need to remove the chain ring and place the new one on the hub thing (spider?), but the bolts just spin. How do I get my new chain ring on the bike?

 

[TommyC]

Chain ring bolts come in two pieces. Are the other halves still in the old chain ring?

 

[DirkWisely]

Chain ring bolts come in two pieces. Are the other halves still in the old chain ring?

Yeah I haven't taken it off the spider. I can't get to the other side of the bolts with it on the bike. Is a gear puller my option here?

 

[RustyIron]

Yeah I haven't taken it off the spider. I can't get to the other side of the bolts with it on the bike. Is a gear puller my option here?

The nuts on the back side typically have an interrupted flat slot. Envision a flat blade screwdriver where you grind out the middle section of the screwdriver. There are little 90 degree wrenches for this. Use a mirror and you'll see what I'm talking about.

The bigger question is even if you remove the fasteners, will you be able to get the chainring over the spider? You might need to remove it. If that's the case, remove the whole thing first, and then you can remove the fasteners while it's on the workbench.

 

[TommyC]

Yeah I misread this at 5am. Thought you already had old one off and trying to get new on.

What rusty said. Much easier with spider off the bike

 

[bryser]

The chainring nuts on the gen 3 have a male hex head and the bolts are female hex head. Chainring shape means it will not come off over the spider.
Also never needed puller to get spider off motor shaft - fingers of both hands opposite sides of rig and wriggle it off with outwards pressure. An obstinate one can be aided to move with a little CRC/WD40 soaked into the interface.

 

[DirkWisely]

So is my spider ready to come off, or do I need to remove that silver nut thing in the middle of the spider?

 

[bryser]

Yes - the lockring has to be removed - (park tool BBT18 - normal R.H. thread)

 

[DirkWisely]

Yes - the lockring has to be removed - (park tool BBT18 - normal R.H. thread)

Christ that was hard to remove. When it finally broke loose I fell over.

 

[bryser]

LOL. Now you're good to fiddle the spider & chainring off the motor shaft.

 

[ari]

I usually superglue the chainring nuts to the new chainring , just a drop on the edge to hold them on, let it dry , then install , makes it easier .

 

[DirkWisely]

LOL. Now you're good to fiddle the spider & chainring off the motor shaft.

So I got the new chain ring on, but how do I tighten the chain ring nut? I can hand tighten it, but it just spins the chainring. When removing it I could use the opposite crank arm to get leverage, but it doesn't work for tightening. Am I really supposed to hold the chain ring to get 50nm of torque on the nut?

Edit: figured it out. Had to use a chain wrench or whatever it's called.