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post #1 of 9 (permalink) Old 08-15-2010, 09:35 PM Thread Starter
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Default PC 891 / 892 wiring

Porter Cable 891 / 892 wiring diagram and how to bypass a defective speed control
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post #2 of 9 (permalink) Old 08-15-2010, 10:11 PM
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Hi Jim

I need to ask why bypass it, why not just replace the defective part. ?

http://www.ereplacementparts.com/por...1672_7600.html
http://www.ereplacementparts.com/por...1672_7602.html

Here's a pass word that will get you 10% off the price ( 1234 )

I will say you don't want to start playing under the hood, you will void any warr. you have on the machine, I would suggest you take it to one of the many PC service center outlets, many of the 891/892 had errors and if the part is defective they will replace it at no charge but not if you rewired it 1st.

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Originally Posted by jbooherjr View Post
Porter Cable 891 / 892 wiring diagram and how to bypass a defective speed control



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Last edited by bobj3; 08-16-2010 at 12:22 AM.
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post #3 of 9 (permalink) Old 08-15-2010, 10:16 PM
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Bob,

the variable speed switch assembly is $81 at Portercable.com... could almost pick up a new motor for that price....

Same reason the laser marker on my SCMS is powered by a cell phone charger. The replacement switching power supply from hitachi is $60.

any electrical spare (other than brushes) seem to be real moneymakers for the tool companies.

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post #4 of 9 (permalink) Old 08-15-2010, 10:22 PM
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Hi Doug

porter cable 892 motor - Google Product Search

http://shop.ebay.com/i.html?_nkw=por...ter+892&_rdc=1

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Bob,

the variable speed switch assembly is $81 at Portercable.com... could almost pick up a new motor for that price....

Same reason the laser marker on my SCMS is powered by a cell phone charger. The replacement switching power supply from hitachi is $60.

any electrical spare (other than brushes) seem to be real moneymakers for the tool companies.



"It's fine to disagree with other members as long as you respect their opinions"

Marc Sommerfeld Tools ,Videos
http://www.youtube.com/channel/UCT-n...RWaEpMA/videos

Find all threads started by bobj3
http://www.routerforums.com/search.php?searchid=944097



Last edited by bobj3; 08-15-2010 at 10:25 PM.
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post #5 of 9 (permalink) Old 08-16-2010, 05:42 AM
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Quote:
Originally Posted by kp91 View Post
Bob,

the variable speed switch assembly is $81 at Portercable.com... could almost pick up a new motor for that price....

Same reason the laser marker on my SCMS is powered by a cell phone charger. The replacement switching power supply from hitachi is $60.

any electrical spare (other than brushes) seem to be real moneymakers for the tool companies.
Hi Jim and Doug:

Ok, that wiring diagram scares me. You're cutting off common and looping hot back onto itself. The only place for current to go is through you to earth ground. I hope you don't have rebar in your shop floors.

In this instance I have to suggest that you replace the control with the original equipment. You might search around electronic parts houses for one since Porter-Cable doesn't make speed switches but buys them on the open market. You should be able to buy one too.

Going cheap on this one just might bite you.

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post #6 of 9 (permalink) Old 08-16-2010, 06:39 PM Thread Starter
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bobj3, thanks for the link. I didn't have the money to buy a replacement part and now I have dedicated it to my router table. Purchased a router speed control from Harbor Freight and been using it for about a year with no problems.
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post #7 of 9 (permalink) Old 11-20-2010, 05:40 PM
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HI

It's variable , you could almost call it soft start, I use it in that mode when I'm not to sure about the stock I'm going to run and then run up the speed on the box.
From 0 to Max or by pass the box if I need to.

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Is the Harbor Freight speed control variable, or is it just three speeds, Lo, Med, HI?



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post #8 of 9 (permalink) Old 11-20-2010, 05:44 PM
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Bob, thanks for the quick response.

I found this thread when I did a search for Harbor Freight speed control, so I thought it would be a good place to post the question. When I saw it was posted in the Porter Cable forum I deleted it because I noticed it said do not post any question in this forum.

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post #9 of 9 (permalink) Old 11-20-2010, 05:56 PM
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Hi Darrin

Rules,rules, rules hahahahahahaha they are made to be broken, 70 miles per hour, how many people drive 70 ..when I am driving 70 I get a horn now and than..I must get my truck fix but it can only go 80 on the speeder meter..



========

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Originally Posted by darrink View Post
Bob, thanks for the quick response.

I found this thread when I did a search for Harbor Freight speed control, so I thought it would be a good place to post the question. When I saw it was posted in the Porter Cable forum I deleted it because I noticed it said do not post any question in this forum.

Darrin



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