OzVMX Forum

Marque Remarks => CZ => Topic started by: shakeyCZ on October 10, 2010, 06:27:58 pm

Title: urgent help putting crank back in
Post by: shakeyCZ on October 10, 2010, 06:27:58 pm

I have done all I need with the engine and need to put the crank back in the side I  used the crank removal tool on, and I cant get it back in I dont want to bash and un balance all I have done with it any help would be great  ??? :o ;D ;D ;D

Title: Re: urgent help putting crank back in
Post by: vandy010 on October 10, 2010, 08:05:43 pm

i'm not familiar with CZ motors but i assume this is what your working on.
with my Yammy motors i place the crank assembly in the freezer, which cools and shrinks it,
and i place the cases in the oven on around 100 celcius, which expands it.
{do a trial run first before placing either part in the oven or freezer to help eliminate any problems that may arise}
use gloves, it helps.
then quickly drop the crank into the case and whalah!
job done.

Title: Re: urgent help putting crank back in
Post by: brent j on October 10, 2010, 08:29:59 pm

Quote from: vandy010 on October 10, 2010, 08:05:43 pm

{do a trial run first before placing either part in the oven or freezer to help eliminate any problems that may arise}

The biggest problem with this method is usually the wife ::)

Title: Re: urgent help putting crank back in
Post by: Davey Crocket on October 10, 2010, 08:36:57 pm

That's why he's divorsed. ;D

Title: Re: urgent help putting crank back in
Post by: vandy010 on October 10, 2010, 09:02:08 pm

Quote from: Davey Crocket on October 10, 2010, 08:36:57 pm

That's why he's divorsed. ;D

8)

Title: Re: urgent help putting crank back in
Post by: shakeyCZ on October 10, 2010, 09:10:52 pm

yer i use this tech a lot but it just wont go the last 5mm in i think i will try again tomorrow and see what happens, its just now I have to pull it out again >:( >:(

Title: Re: urgent help putting crank back in
Post by: shakeyCZ on October 10, 2010, 09:15:27 pm

oh yer thanks vandy010 for your help, dose anyone have a different way of doing it?

Title: Re: urgent help putting crank back in
Post by: DR on October 10, 2010, 10:46:25 pm

not sure this would work on this particular bike but if the crank is threaded on the problem side then you could cut some steel tubing and make a sleeve to slip over and rest against the bearing retainer then use the nut to 'help' pull the crank into the cases.

Title: Re: urgent help putting crank back in
Post by: tony27 on October 11, 2010, 05:18:06 pm

Sounds like something in the gearbox is catching or is the problem only in trying to fit the crank into the first crankcase?

Title: Re: urgent help putting crank back in
Post by: shakeyCZ on October 11, 2010, 06:54:05 pm

yer its just getting the crank back in the first case the flywheel side pops straight on, it sux lots >:( >:( >:(