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Carpenter
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Discussion Starter · #1 · (Edited)


So I have had this saw for about 6 months and I think after dropping it a few times (hook it on saw horses with a nail, gets knocked off, ect) I noticed a squeaking sound as it spins. I think it could be a bearing, not sure.

I am also having an issue with the guard getting cut up a little bit from the blade, due to the blade warping when I cut arches out of plywood or from the guard being too loose (it feels loose or wobbly anyway, but I can't find a way to tighten it).

So those 2 issues aside, I decided to take it apart (my first time taking a saw apart :eek:) and in doing so when trying to remove the outer guard (the part with the black makita letters) from the motor the coil pack started to come out of the saw with it. Likely cause the gears were still interlocked and I didn't know what I was doing...

I got it free and the coil pack went back in the housing. I'm cleaning everything up and going to put it back together this weekend. If it is a bearing issue I see the top one being able to be replaced, but the lower one thats just above the blower fan, around the spline connected to the coil pack seems almost welded on there it won't budge.

Safety wise I'm wondering if I could have damaged anything by having the coil pack come out of the housing? Its in there good now, I can't pull it up to save my life and I'm confused how I got it to come out in the first place. I took out the brushes (they look fine, lots of saw dust in there so I blew it out) and the coil pack still wouldn't come free. Is it supposed to?

Also, when disassembling johnny five here, dust got in the greased areas, I'm wondering what I should use to clean the grease out and what kind of grease I should put back in?

Any help would be appreciated.

Thanks.
 

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Carpenter
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303 Posts
Discussion Starter · #5 ·
It's hard to find a good small bearing puller. You can buy better bearings than originally come with the saw too, (get the high quality sealed type). I use a (modified/grinding required) automotive battery terminal puller to pull the bearings. Once you get the original bearing loose, they will remove easier after that. Put moderate pressure on the puller and lightly smack the puller bolt end with a hammer to break them loose.

If you have contaminated the grease just replace it with common moly wheel bearing grease. Best not to mix grease types.
Good info thanks. What would you recommend to clean the grease with?
 

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Carpenter
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Discussion Starter · #7 ·
Should I be worried about the coil pack coming out of the housing the first time I tried to remove the upper guard (the part with the black makita letters on it)?

The gears were interlocked so until I removed one set of gears (the ones not on the spline connected to the coil pack) it would not come free.

Then I wanted to pull the coil pack out to see how it looked and I can't get it out.

So I'm worried something might be wrong?
 
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