Top 20 Dewalt DC925 Cordless Drill Questions & Answers

hi like most clutches on hummer unit after the assembly has been done you will a way to tighten the spring clutch look for adjustment to make the spring looser and tighten

You will find them in the transmission, remove the metal cover and they will be located just under it - sounds like it is either the gear posts or the clutch cams on the nose side of the transmission DeWALT DC925 Type 1 Hammer Drill Parts

The switch (PN: N089938) for your drill costs between $75 & $80, so:If by "brand new, just out of the box" you mean you just bought it, bring it back to where you got it and exchange it or get your money back.If by "brand new, just out of the box" you mean you bought it, it sat somewhere for some time and you're just now using it, check to see if it's still under warranty so you can get it fixed through that.If it's out of warranty, you'll have to buy a switch to fix it. They're available on sites like www.ereplacementparts.com.

It should be a T-20 torx.

Hi my 925 has had same problem right out the box it must be an allignment thing a find a tap with the old hammer sorts it out

In the past when this has happened to me I have had to replace the chuck. Problem is, the chuck is not a normal one and the correct chuck has a list price of about 65 pound and needs a special service tool to take it off and put it on again.

Check on the bottom of the handle where the battery attaches. Dewalt stamps the 'made-on-date' in the plastic there. This is the date repair centers use for warranty repairs if you don't have a receipt.

you have a problem that causes a short of the battery contacts. I would recommend looking at the switch first and also look at the contacts on the battery for burning.

how did you get it back together

Here is a link to a parts diagram that may help.

http://www.toolpartsdirect.com/cgi-bin/schematic.cgi/dewalt/DC925KA_TYPE_1

under my handle for this site, go to the tip section and I have detailed instructions on how to remove this chuck. Let me know if you need more assistance.

there should be different settings for the clutch. there is a wheel behind the chuck which you can turn for the settings. If it is set at the high setting the clutch is worn and has to be replaced.

Hi!!

The hammerdrill function is set by the selector switch, the switch itself may look fine from the outside, but, if it is not switching functions, you should open the hammerdrill and check the switching mechanism, even if you don't have an idea of how it works, after a visual inspection to the switching mechanism, common sense will tell you what's wrong, it is actually pretty simple.

Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.

THE BRUSHES COME IN A SET AND ARE AVAILABLE FROM MOST SERVICE CENTERS. IF YOU GO ONLINE YOU CAN DOWNLOAD A SCHEMATIC FROM DEWALT SERVICE NET. ENTER IN THE MODEL NUMBER AND CHOOSE THE TYPE # AND YOU CAN GET THE PART # FOR THE CLUTCH ASSY, THE TOOL COMES APART PRETTY EASY, THE FRONT OF THE TOOL IS HELD IN PLACE BY 4 SCREWS 15 TORX I BELEIVE AND THE CLUTCH AND TRANNY ASSY IS ITS OWN MODULE, BUT CALL YOUR LOCAL SERVICE CENTER AND THEY SHOULD BE ABLE TO WALK YOU THROUGH IT. SINCERELY JIMS TOOL SERVICE

You must never oil the chuck so if this has been done then it can be the cause of your problem

Hi,
Try and work some WD-40 into the chuck to get it to free up...

heatman101

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.

you can go to Dewaltservicenet.com and in the middle of the page towards the bottom you will find a box for manual. Type in your model number and you can download a schematic for the tool.

They all do that a bit. The sparks when starting up and stopping are normal. If it has been used alot brushes may be a good idea but before they need to be changed it will spark quite a bit.

It will not hurt to inspect the amount of brush material remaining.

it is unlikely that you had two defective batteries, it makes more sense that the charger is overcharging them. It would have to be checked with an amp meter to be sure