How to Install Crank Bearings Easily

[Quadrider10]

so i found a really neat way of installing the crank bearings without using hammers or any blut force on youtube. heres how....

1) put bearings into the freezer for about 2 hrs or so
2) rite before u take the bearings out, heat up the case and around where the bearings will seat with a blow torch. be carefull when u do this!!!!!! u DONT want it to be cherry hot, or even red hot. u want it hot enough to where u can only hold ur hand there for 1-2 seconds.
3) take bearings out, and press them in with your hand. be carefull not to get burned.
4) if bearings dont go in, tap them with a mallet and old rag very lightly.

 

[brandoz28]

I've put the cases in an oven at about 250* before to do this.


Another note, don't roll the bearings until they've come up to temperature and you've oiled them

 

[Quadrider10]

I've put the cases in an oven at about 250* before to do this.


Another note, don't roll the bearings until they've come up to temperature and you've oiled them

good point. oven would probs be better then just one spot. the whole case expands rather then just one spot. good point.

 

[brandoz28]

Using a small propane torch for that isn't a bad thing. The oven was simply my only option at the time lol

 

[Quadrider10]

Using a small propane torch for that isn't a bad thing. The oven was simply my only option at the time lol

ohhh well eaither way lol

 

[Surfrjag]

i have done it both ways and the oven seems to work better for me. also i like to clean up the area where they are going in to be sure they slide right in. if you do end up needing to tap them in just a little bit be sure and tap only the outer race of the bearing. nice write up!