OS .15 CV-R Rebuild

[RC10th]

Thanks, I probably went a bit overboard but meh, it is what it is

[Juju92]

Hi,
Can you help me please?? I can't remove the first bearing on the flywheel side.

[morrisey0]

Hi,
Can you help me please?? I can't remove the first bearing on the flywheel side.

Did you heat up the case as described?

I have done exactly one nitro rebuild, so not an expert, but I did have to heat my case (oven method) to remove the inner bearing.

[Lowgear]

Yeah, you'll need to heat up the case more for the bearing to come out. I bought an electric hot plate just to aid in the removal of them.

One thing not detailed is the actual re-installation of the bearings back into the case. A popular method is placing the bearings into a freezer for a period of time like 24 hours, and then heating the case up a bit right before taking them out. While the case is warm/hot, take the bearings out of the freezer, and push or tap them in using a wooden dowel. The cold will slightly shrink the bearings, and heating the case will expand it. Thus the looser tolerances created by the two parts will facilitate easier assembly.

Another thing of note is to protect your hands while handling a hot case to prevent burning yourself. An oven mitt works nicely.

There's also actual bearing puller/presser tools you can buy to skip the above steps, but I've never tried them before as they're quite expensive and aren't universal.