Dewalt DW988 assembly - Dewalt Drills

Hi,
The spark you have seen inside is from the carbon brush that is arching the electric current and don't worry thats normal!

are u sure that the other one is a 18v also

Depending on how much play, thats normal. The hammer feature causes that.

It all depends on what is burning I'm afraid. When in use, run your hand around the back of the machine and handle area to see if anywhere in particular is getting hot. On the older versions of these (DW988) the leads leading from the switch to the brush holders would overheat and burn, also causing damage to the brush holders themselves. Is there any smoke coming from the rear vents, if so you wil probably find it is a motor problem and the smell would be the insulation burning off the armature. The only other thing to check would be to make sure the battery isn't shorting and getting hot, as this could also cause damage to the switch and vice versa.

Hi,
The gears have stripped in the gearcase...

heatman101

On my DW988 the ring would go past 21 a couple of clicks to a symbol that looks like a yellow T and that would be hammer mode when I press down to drill.

go to Dewaltservicenet.com and type in your model number and you will find a schematic on this tool that will help in the reassembly.

lock the drill in a vise so you can work on it. Then try working a very small screw driver tip into the jaws as you at the same time back up the jaws. They may be jamed against each other.

the transmission comes in assy. all u can do is to match the gear & test every small installed. if it's dw997 see www.erplacementparts.com for your guide how to re-assemble.
if dw988 trans diagram see similarity on how to put it back.

if ur drill is DW988 use switch # 152274-19
if ur drill is DC925 use switch # 152274-25
see www.ereplacementparts.com for parts & diagram