MadMax
starting to shine!
Member since January 2023
Posts: 32
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Post by MadMax on Mar 14, 2024 21:44:38 GMT -5
So, I found an older 18" Highland Park slab saw online. Price was right but the all thread does not turn. I am not mechanically inclined but I'm 99% sure it just needs the motor replaced. Does anybody know where I would find a direct replacement or an I going to have to make some modifications to make it work?    |
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Post by Son Of Beach on Mar 14, 2024 21:47:24 GMT -5
So, I found an older 18" Highland Park slab saw online. Price was right but the all thread does not turn. I am not mechanically inclined but I'm 99% sure it just needs the motor replaced. Does anybody know where I would find a direct replacement or an I going to have to make some modifications to make it work? Just a quick search of "Dayton 3M098" yields lots of results, even by some big boys.
If I remember tomorrow at work, I'll look.
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quartz
Cave Dweller 
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,359
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Post by quartz on Mar 14, 2024 22:02:34 GMT -5
The 3M098 motor has been discontinued, direct replacement is Dayton 52JE17. Grainger says ~$63. The difference is that the 52JE17 runs at 4.5 RPM where the 3M098 ran at 4.0 RPM, half a revolution per minute isn't going to make a difference on a saw.
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MadMax
starting to shine!
Member since January 2023
Posts: 32
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Post by MadMax on Mar 14, 2024 22:26:47 GMT -5
Thanks guys. I just wanted a few opinions before I get started.
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Post by Rockoonz on Mar 14, 2024 23:02:34 GMT -5
Highland park saws don't have a feed motor, the feed runs directly off the blade arbor using a belt and worm drive.
If yours is HP it has been modified.
You might try opening the gear case on the gearmotor, if they sit for a long time the grease can solidify and stop it from turning and a good cleaning with some fresh white lithium grease will fix you up. Worth a try anyway.
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john19
off to a rocking start
Member since March 2024
Posts: 12
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Post by john19 on Mar 15, 2024 4:36:02 GMT -5
On these old motors, you can drill out those 6 rivets and then carefully open the casing, what you will find is that the grease has become solid inside, if you clean all the old grease out and then regrease it with lithium grease 9 times out of 10, the motor will function just fine. some of the motors had screws instead of the rivets, but in your case you will need to buy some small screws to replace the rivets after repairing the motor. I think you will be surprised how well it works. I am assuming that this motor is off a 10 or 12 inch table top style saw, is that correct? J So, I found an older 18" Highland Park slab saw online. Price was right but the all thread does not turn. I am not mechanically inclined but I'm 99% sure it just needs the motor replaced. Does anybody know where I would find a direct replacement or an I going to have to make some modifications to make it work? |
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Post by Rockoonz on Mar 15, 2024 10:53:09 GMT -5
john19 OP says it is a 18 inch saw, so the feed motor must have been added to possibly replace the original feed. I thought it looked like there were little cap screws but they could be rivets. So far I have been able to fix all of the gear motors on saws except for one, and it was on a trim saw salvaged from a fire.
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john19
off to a rocking start
Member since March 2024
Posts: 12
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Post by john19 on Mar 15, 2024 22:58:50 GMT -5
Looking closer it appears you're right, these are socket head cap screws, so its easy to take it apart. Yeah, being that its on an old 18, then it has been modified. Would be better to get it back to original for sure. john19 OP says it is a 18 inch saw, so the feed motor must have been added to possibly replace the original feed. I thought it looked like there were little cap screws but they could be rivets. So far I have been able to fix all of the gear motors on saws except for one, and it was on a trim saw salvaged from a fire. |
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MadMax
starting to shine!
Member since January 2023
Posts: 32
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Post by MadMax on Mar 16, 2024 22:47:36 GMT -5
The saw is currently at my dad's place so it's tough for me to share more pictures and info yet. He has been tinkering with it. A newer Dayton replacement motor that he found fits but unfortunately is turning the auto feed in the wrong direction!
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,359
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Post by quartz on Mar 17, 2024 21:43:02 GMT -5
Take the armature out and turn it over and reinstall to reverse rotation. All I have seen come this way.
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