Mac motor issue, changing out bearings

[Brandon White]

I'm changing out the bearings and I'm having a hard time getting the cone part in the back off. I've tried turning it off and hitting it with a rubber mallet. Is there a certain way for the Mac or is it just being stubborn...

 

[TimothyJones]

Hopefully you haven't damaged the drum.

First take off/out the drum housing,drum,rod and piston and liner as not to damage.

Take a collet or nut (its probally a 1/4-28) and screw it on to the flywheel and then back it off a turn and a half. Dont damage the threads.

Grab the flywheel and Tap the end of the collet with a hammer or mallet. Don't lose your grip or do it over a table.

USE a old collet or one that is no good.

Some use a puller but I never had good success with that.

Hope This Helps

Tim

 

[Samuel Hagan JR]

Use some heat. A small torch works great. It will come off.

 

[shoboat]

Brandon,

A flywheel puller is the best way.

And a bearing removal tool next.

Enjoy The Weekend,

Mark Sholund

 

[Mike Larson]

I locktight collets on cranks... evenly heat it like Sam said... Napa sells a battery post puller that will pop it... but.. I do have a set of old school steel dog bone collets that I've beaten on... breaking threads on the crank isnt much fun when you run into a stuck one... the old school piccos used to spin the brass cone galling everything and flywheels are a pain.. steel cone and hardened washers ... proceed with caution it should pop with a little heat... 'luck... mike

 

[Brandon White]

Thanks for all the info guys. My brother sent me and pic of the battle post puller. I'll look into that with some heat. I did heat it up in the oven and moved some. I was working on it around midnight so once it didn't want to move.. I went to bed.Haha

 

[Richard Hartley]

That puller should work

If is really stubborn use a little heat

As Tim said it is best to remove back plate ,drum,and i usually remove sleeve and piston

tighten the puller against the flywheel and crank then tap the end of the puller with a plastic hammer while holding the puller or the case

being careful not to drop the case on the floor as was also stated above

Then you can heat the case in an oven to about 350 degrees and the bearings should almost fall out on their own

There are some precautions about the oven and most of those are do it when your wife is not home

The Good nights sleep will probably help too

That thing on the left was probably a distraction too, turn that off while you are working on your engine

Richard

 

[David Murany]

This is what we use. It's made by K tool. Not sure which puller it is but if you put it in the belt groove and snug it up you can give it a hard hit with a hammer from the backside and it will pop right off.

 

[Samuel Hagan JR]

Put the bearings in the freezer before you install them and heat the case up a little and they should slide right in also.

 

[Brandon White]

Success! Bought that tool thing and it popped right out. Okay I'll do that Sam! Thanks for all the help guys!