Question about Dewalt 18 Volt Compact Drill Kit

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Dewalt dc 980,when i spin the torque dial from 1 to 25 nothing changes

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You need to get a new transmission. There is a spring and pin that get worn in the transmission. Dewalt doesn't sell just the spring and pin. You will have to get the whole transmission. The part number for the transmission is 397892-05 for the dc980. To change it you undo the screws holding the housing together. (Make sure battery is removed first.) Undo 4 screws holding front assy on and remove. Undo back cap screws and remove. Pull the right side cover off and leave drill seated on bench. Do not pull entire assy out of left handle. slightly angle the motor transmission assy and slide transmission off. Replace with new transmission. (Lining up teeth is not easy but keep at it until you get it.) Replace motor and transmission assy and reassemble in the reverse order above.

Posted on Sep 28, 2009

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Posted on Jan 02, 2017

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1 Answer

A brand new Dewalt screwgun doesn't ...just doesn't do nothing


Well it's gonna have to be the switch then. Just for kicks and giggles see if you have continuity on both sides of the switch with the trigger pressed

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1 Answer

My Dewalt DC925 works well but the torque settings don't seem to be working.when i am drilling screws the drill will just drill until i release the trigger.is this a clutch problem?. Many thanks.


Try to put it on the lowest torque and if it slips when wanted, then add a little more torque and check to make sure it slips. Continue at each torque setting and usually works again at full torque. Usually happens when left on the same torque all the time. This kind of resets it.

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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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1 Answer

The chuck of the drill spins but stops when touched!!


you could have the torque setting set to the minimum setting, in which case, what you described will happen.
check the torque setting and adjust it.
are you able to turn a screw?

Jun 30, 2010 | Dewalt DC989VA XRP 3 - speed 1/2" 18v...

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How do I select torque setting?


the black ring behind the chuck, has numbers on it, turn to desired torque

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2 Answers

Is anyone there? need Dewalt help


Here is DeWalt's marketing thing on the subject.

http://www.dewalt.com/us/cordless/powerrating/

Unit Watts out (UWO) is their rating for the (presumably sustainable)maximum power output at the chuck of the drill. You can read about it..their explanation is basically technically correct.

Yes, max torque is related. The maximum power in a permanent magnet DCmotor system occurs at half the maximum speed when the system is loadedwith half the maximum torque.

1hp = 746 watts, DeWalt's DC900 36V drill is claimed to be 750 watts,close enough so let's call it 1 HP ok? Their max RPM is 400. So 200 RPMis the half-way point.

1HP = 200RPM*Tmax(in-lbs)/(24*5252)

Tmax = approx 630 in-lbs

The equation I used is known equation for relating power (HP) to RPMand torque (in ft-lbs..I added in the factor of 1/12 to account for thein-lbs to ft-lbs conversion).

By the way DeWalt make some bold claims about other manufacterers' drills.

For example they claim the 18V Lok Tor by Milwaukee puts out 390 UWOcompared to their DC988 model listed as 420 UWO. Yet I have readinformation from Milwaukee's own independent tests that claim the LokTor drills faster 2 9/16" self-feeds AND more self-feeds per batterythan that very DeWalt model.

This was posted on Milwaukee's Tool Talk forum (when it existed). Ibelieve the Milwaukee official said that DeWalt averaged 7.2 secondsper hole while the Milwaukee averaged 6.4 seconds per hole. I make beoff slightly but I do remember it was around a 1 second difference.Plus the Milwaukee apparently drilled 28 holes per batt where dewaltwas 25.

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2 Answers

Auto Document Feeder


has the feeder attempted to feed in the document ? Check to see if there is already a document on the copyboard platen

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