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Harbor Freight DC Motor Issue?

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Forum topic by BoilerUp21 posted 02-06-2018 01:43 AM 1708 views 0 times favorited 28 replies Add to Favorites Watch
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BoilerUp21

85 posts in 766 days


02-06-2018 01:43 AM

I converted my HF dust collector to a cyclone with Wynn filter about 6 months ago. I noticed that i started losing ~10% suction lately and then ~20% more recently. I figured it had something to do with my 30 gallon chips bin under the cyclone filling up twice in the last couple weeks while jointing/planing a bunch of oak…

The DC is having trouble starting up (almost sounds like a car struggling to start) and after about 3 seconds, it trips the breaker. I figured it was something to do with the Wynn filter being clogged and the DC not being able to efficiently push air through the clogged pleats. After taking the filter off and cleaning it with air, i had the same issue.

Finally, i took the impeller cover off to verify there were not clogs or anything causing it not to rotate.

After all of this, i still cannot pinpoint the problem, but have to assume it has something to do with the motor or wiring. Has anyone else heard/had a similar issue with the HF DC? There is not obvious burning smell or smoke and other tools on the same 20amp circuit work fine…

Any help is greatly appreciated.


28 replies so far

View caboxmaker's profile

caboxmaker

277 posts in 387 days


#1 posted 02-06-2018 01:57 AM

Maybe HF is the problem…

View BoilerUp21's profile

BoilerUp21

85 posts in 766 days


#2 posted 02-06-2018 02:04 AM

Well that is a good point, but not the help i was looking for…


Maybe HF is the problem…

- caboxmaker


View TheFridge's profile

TheFridge

9468 posts in 1485 days


#3 posted 02-06-2018 02:05 AM

Sounds like capacitor.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View DIYaholic's profile

DIYaholic

19620 posts in 2674 days


#4 posted 02-06-2018 02:24 AM



Sounds like capacitor.

- TheFridge

+1

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View BoilerUp21's profile

BoilerUp21

85 posts in 766 days


#5 posted 02-06-2018 02:32 AM

thanks guys. I have done some reading on other similar issues and i believe it is the capacitor as well. Any idea on how to get a replacement or where to get one?

View AlaskaGuy's profile

AlaskaGuy

4136 posts in 2308 days


#6 posted 02-06-2018 02:40 AM



Sounds like capacitor.

- TheFridge

I think you’re right. Being HF I doubt the used the “good” Alder.

-- Alaskan's for Global warming!

View IantheTinker's profile

IantheTinker

236 posts in 126 days


#7 posted 02-06-2018 02:46 AM

Have you tried grainger.com? It is a motor parts website, might be worth a shot.

Also, the problem is not that it is from Harbor Freight, their dust collector is one of their gems. Overall the store isn’t all that bad, just gotta figure out what’s worth it and what isn’t, just like any other store.

-- “How you feeling, Roy?”... “a little unappreciated, Al...” - Die Hard

View BoilerUp21's profile

BoilerUp21

85 posts in 766 days


#8 posted 02-06-2018 02:59 AM

Thanks. I just ordered DAYTON Round Motor Start Capacitor,400-480 Microfarad Rating,110-125VAC Voltage from Grainger and will see if this solves the problem. Appreciate it.


Have you tried grainger.com? It is a motor parts website, might be worth a shot.

Also, the problem is not that it is from Harbor Freight, their dust collector is one of their gems. Overall the store isn’t all that bad, just gotta figure out what’s worth it and what isn’t, just like any other store.

- IantheTinker

View IantheTinker's profile

IantheTinker

236 posts in 126 days


#9 posted 02-06-2018 03:38 AM



Thanks. I just ordered DAYTON Round Motor Start Capacitor,400-480 Microfarad Rating,110-125VAC Voltage from Grainger and will see if this solves the problem. Appreciate it.

- BoilerUp21

No problem, glad I could help. I hope it works out for you, a shop without DC can be rough.

-- “How you feeling, Roy?”... “a little unappreciated, Al...” - Die Hard

View AlaskaGuy's profile

AlaskaGuy

4136 posts in 2308 days


#10 posted 02-06-2018 03:46 AM

Thanks. I just ordered DAYTON Round Motor Start Capacitor,400-480 Microfarad Rating,110-125VAC Voltage from Grainger and will see if this solves the problem. Appreciate it.

- BoilerUp21

That was quick, hopefully that’s the fix.

-- Alaskan's for Global warming!

View William Shelley's profile

William Shelley

572 posts in 1468 days


#11 posted 02-06-2018 03:46 AM



Thanks. I just ordered DAYTON Round Motor Start Capacitor,400-480 Microfarad Rating,110-125VAC Voltage from Grainger and will see if this solves the problem. Appreciate it.

Have you tried grainger.com? It is a motor parts website, might be worth a shot.

Also, the problem is not that it is from Harbor Freight, their dust collector is one of their gems. Overall the store isn’t all that bad, just gotta figure out what’s worth it and what isn’t, just like any other store.

- IantheTinker

- BoilerUp21

Careful, the capacitor needs to be rated for 250 or 370VAC usually. 480uf seems awfully large for a 2HP motor.

-- Woodworking from an engineer's perspective

View crank49's profile

crank49

4030 posts in 2970 days


#12 posted 02-06-2018 06:03 AM

While we’re at it, this is a good learning opportunity.
A filter being clogged would NOT increase the load on the motor.
Exactly the opposite.

View skipj's profile

skipj

97 posts in 2271 days


#13 posted 02-06-2018 12:16 PM

When this happened to my HF motor I replaced the capactor, It’s not the problem.
On mine the bearing on the fan end of the motor was almost frozen.Replaced it and now works great.
I think the bearing was about $12..Time consuming but a easey fix.

I think i still have the old bearing and the package the new bearing came in.If you need the bearing number
and wher i got it let me know. Replace the CAP first, thats easey.

Not the motor fan end,The impeller end.

View BoilerUp21's profile

BoilerUp21

85 posts in 766 days


#14 posted 02-06-2018 12:59 PM

The one that comes out of the HF is listed as 125V.AC

Thanks. I just ordered DAYTON Round Motor Start Capacitor,400-480 Microfarad Rating,110-125VAC Voltage from Grainger and will see if this solves the problem. Appreciate it.

Have you tried grainger.com? It is a motor parts website, might be worth a shot.

Also, the problem is not that it is from Harbor Freight, their dust collector is one of their gems. Overall the store isn’t all that bad, just gotta figure out what’s worth it and what isn’t, just like any other store.

- IantheTinker

- BoilerUp21

Careful, the capacitor needs to be rated for 250 or 370VAC usually. 480uf seems awfully large for a 2HP motor.

- William Shelley


View BoilerUp21's profile

BoilerUp21

85 posts in 766 days


#15 posted 02-06-2018 01:00 PM

Any idea where/what size you ordered?


When this happened to my HF motor I replaced the capactor, It s not the problem.
On mine the bearing on the fan end of the motor was almost frozen.Replaced it and now works great.
I think the bearing was about $12..Time consuming but a easey fix.

I think i still have the old bearing and the package the new bearing came in.If you need the bearing number
and wher i got it let me know. Replace the CAP first, thats easey.

Not the motor fan end,The impeller end.

- skipj


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