Removing The Crank Gear

[Madtrang]

Having problems removing crank gear off of my rb20. Any trick or tips on removal.

[Dobz]

I drilled and tapped four holes in the front of it, then made a plate that bolted to the pulley that I could get a wheel puller on.

There has to be an easier way though.... anyone else?

[33GTRV]

go to bunnings and buy a benzo torch and gently warm up the gear and slide it off. Wont take much but Jesus christ you need to be careful doing it as to not heat the crank. They usually come off easy as

[DVS JEZ]

Screw the crank bolt back in a fair way. Then Try a few short blows with a hammer on the front of the crank bolt to break the bond(rust) insude the gear. Has worked for me

[Madtrang]

go to bunnings and buy a benzo torch and gently warm up the gear and slide it off. Wont take much but Jesus christ you need to be careful doing it as to not heat the crank. They usually come off easy as

Once the cog is heated up do you just remove the gear off the shaft by hand or you still need some assistance?

[beemae30]

Will need a few taps to get off. And dw about the crank as long as u arent getting it red hot it will be fine. Or do it JVS way

[mico]

just get a pulley remover that grabs the back of the gear, off in 10 secs.

[89CAL]

just get a pulley remover that grabs the back of the gear, off in 10 secs.

Not that simple. There is no room behind the gear to get puller arms in

[Madtrang]

How long should it take to heat up, Gave it ago 2night but still had no success. I think I need to get it alot more hotter.

[Madtrang]

ok no succes yet, I have drilled and taped the gear and used 6mm bolts on a stanley sterring pulley.. anyway i bent the stanly stearing puller.. so i grabbed a flat pri bar spent an hour dilling that out and used that as a make shift puller.. bent that aswell untill i stripped the thread i had mad in the cog. During this process i was heating up and cooling the crank shaft see if that will bude (just used a butane torch).. Running out of ideas. anyone had succes cutting these off... Is there a mobile sevice that specialise in this stuff?

Thoughts ideas.. ?

[Dobz]

You could get a slide hammer on to it, you would have to make sure you have a good amount of thread so you don't just rip it out. When you are heating the gear are you deflecting the flame so it doesn't heat the crank at the same time?

[Madtrang]

No not realy defelecting the heat, was just running the water on it peridoicaly to try and drop the tempertature on the shaft/

[89CAL]

No not realy defelecting the heat, was just running the water on it peridoicaly to try and drop the tempertature on the shaft/

This is not the best idea, rapid heat/cold changes will weaken parts. Not a problem with the crank gear but not really a good thing on your crankshaft. your better off heating it, then letting it cool on its own without any help from water etc

[DVS JEZ]

Did u try a hammer?

[mico]

have u tried hitting it back toward the engine just to crack it first ? this is what i did. then lubed with inox and pryed forward against the oil pump with a flat head screw driver one either side. also with a flat head and hammer try rotational wise to help crack it more. once u get it far enough forward u can use the puller. u just need a big jolt to crack it then youre laughin.

[Flash89]

i having this problem too, i might give what the above suggested, might help let out a little frustration haha

[Flash89]

i just tried and failed

[Madtrang]

I mange to remove it finally, I drilled just above the keyway than used my ozito ripp off dremel to cut a thin cut just above the keyway, used a cold chisel to crack it a little and used my pulley and the 6mm tapped holes i made to slip it off. Wow this thing was epic rusted on glad its off now.

Now here a question is there something i can put on the shaft to prevent this happening again?

[Dobz]

I mange to remove it finally, I drilled just above the keyway than used my ozito ripp off dremel to cut a thin cut just above the keyway, used a cold chisel to crack it a little and used my pulley and the 6mm tapped holes i made to slip it off. Wow this thing was epic rusted on glad its off now.

Now here a question is there something i can put on the shaft to prevent this happening again?

Sounds familliar, mine was nicely rusted on too.

You can get anti-seize to put on it, i think you can get little tubes and you should be able to find it at a fastener or engineering supplies shop.

Edited June 6, 2012 by Dobz