Question about Dewalt Dc390 18v Cordless Circular Saw, 2 Dc9096 Batteries, Charger Xrp 18 Volt

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Dewalt dc390 trigger wiring

Wiring trigger

Posted by Anonymous on

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5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 25 Answers

SOURCE: dewalt power saw wiring diagram for trigger switch

The Switching should go like this

(single letters denote wire color)

Y---o o---R

B---o o---B

The contacts where the black wires attach are the points on the switch that break when continuity is checked.

Posted on Apr 18, 2009

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brewerstool
  • 141 Answers

SOURCE: repair spring to lower guard to spring back

You may be able to salvage the torsion spring that is there. Sometimes the end will break off and you can bend yourself a new end and just stick it back into the retaining hole in the housing or guard. There may be damage to the guard which will not allow you to just bend the spring to make a new joint. Either way, you need to know what you are dealing with. First remove the blade if you haven't done so already. Then remove the bumper (rubber piece) that stops the guard from returning too far. Next you will need a pick or a small flat head screwdriver. Look around the hub and you will notice a retaining ring. You will have to use the pick or screwdriver to get the ring started. Look for a little tab around the perimeter of the hub. You will have to work that tab out and make sure you keep your pick or screwdriver under it. Then work it around and off the hub. Then you can remove the guard from the hub. The spring is located under the guard and is a torsion spring. Look for damage to the guard and the housing as well as the spring. If there is any question to the integrity of the guard you should replace it. The part number for the torsion spring is 612517-00 ($1.50), the retaining ring is 150383-00 ($1.50) just in case you break it, and the guard number is 611925-00 ($6). If you have any questions please post back.

Posted on Oct 28, 2009

kel1guy2002
  • 3740 Answers

SOURCE: i have just brought a

It is possible that the motor is running backward but... first see the manual here:
http://www.plumbersurplus.com/pdf/08364.pdf Make sure the blade is installed as pictured in figure 4 page 11 of the manual.
After seeing the manual..... make sure the battery is charged correctly. The flat side of the battery should be toward the back of the charger when charging. If somehow the battery was inserted backward in the charger it is possible the battery was reverse charged during the intital charge. If you suspect this has happened.... insert the battery in the saw and run the saw until the battery is DEAD. Then insert it properly in the charger and leave it there for 9 hours so the charger will do the automatic tune up equalization of the battery.

If none of the above correct the problem, someone connected the internal battery power wiring incorrectly during FACTORY assembly. I would take it back to the retailer first... before processing a warranty claim.

You can contact DEWALT here:
call 1-800-4-DEWALT
(1-800-433-9258).

Thanks for choosing FixYa,
Kelly

Posted on Apr 30, 2011

  • 885 Answers

SOURCE: user manuel for dewalt dc390 battery powered skillsaw

Go to http://servicenet.dewalt.com/Home, put your model number in the 'Find Parts' box and hit search. There are two types of your saw, DC390B and DC390K, select the proper one and you can view or download the parts breakdown or instruction manual.

Posted on Dec 29, 2011

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1 Answer

How do i change the brushes on a DC390 circular saw?


https://images-na.ssl-images-amazon.com/images/G/01/th/aplus/dewalt/dewalt-DC390B-main-sm.jpg take down the black cover in the end of motor. and there will be brushes. take out old ones. mesure them wide and height. buy new one's. add to the place and have working thing ;)

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Have you tried to remove the battery and put it in separately?

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User manuel for dewalt dc390 battery powered skillsaw


Go to http://servicenet.dewalt.com/Home, put your model number in the 'Find Parts' box and hit search. There are two types of your saw, DC390B and DC390K, select the proper one and you can view or download the parts breakdown or instruction manual.

Dec 29, 2011 | Dewalt DC390K 18v Cordless Circular Saw...

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I have just brought a new dewalt dc390 cordless circular saw and it seems that the motor is running backwards?


It is possible that the motor is running backward but... first see the manual here:
http://www.plumbersurplus.com/pdf/08364.pdf Make sure the blade is installed as pictured in figure 4 page 11 of the manual.
After seeing the manual..... make sure the battery is charged correctly. The flat side of the battery should be toward the back of the charger when charging. If somehow the battery was inserted backward in the charger it is possible the battery was reverse charged during the intital charge. If you suspect this has happened.... insert the battery in the saw and run the saw until the battery is DEAD. Then insert it properly in the charger and leave it there for 9 hours so the charger will do the automatic tune up equalization of the battery.

If none of the above correct the problem, someone connected the internal battery power wiring incorrectly during FACTORY assembly. I would take it back to the retailer first... before processing a warranty claim.

You can contact DEWALT here:
call 1-800-4-DEWALT
(1-800-433-9258).

Thanks for choosing FixYa,
Kelly

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1 Answer

How do you know if the trigger is bad? getting dc volts to trigger but nothing out when I press it.


It's not unusual for Dewalt triggers to go bad and it appears you have correctly tested the trigger. You can test the motor by wiring it directly to the battery but hold on to it and only give it a short burst of power so it doesn't spin out of the case. Dewalt triggers are fairly easy to find online but shop around, they're not cheap.

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take it to a repair shop.could be broken wire in lead,could be burnt out armature,could be crook trigger switch,try a new plug on the lead

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Can't remove the old blade, which way do you turn the nut?


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Spindle and spindle hole in blade different shapes


there is a blade clamp missing like you get on grinders that transfers drive from the motor to the blade,otherwise they are quite a nice saw

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