DeWalt
Drill/Driver

Model # DCD991B TYPE 1 Official DeWalt drill/driver

Here are the diagrams and repair parts for Official DeWalt DCD991B-TYPE-1 drill/driver, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 35 parts  |

Rating Label N443222
#43

Main asy diagram

Rating label

Part #N443222

The manufacturer no longer makes this part, and there's no substitute part

Warning Label N449354
#49

Main asy diagram

Warning label

Part #N449354

The manufacturer no longer makes this part, and there's no substitute part

Keyless Chuck N454251
#12

Main asy diagram

Keyless chuck

Part #N454251

The manufacturer no longer makes this part, and there's no substitute part

End N161216
#9

Main asy diagram

End

Part #N161216

The manufacturer no longer makes this part, and there's no substitute part

Shifter N375867
#21

Main asy diagram

Shifter

Part #N375867

The manufacturer no longer makes this part, and there's no substitute part

Detent Spring N392855
#45

Main asy diagram

Detent spring

Part #N392855

The manufacturer no longer makes this part, and there's no substitute part

Grease N017298
#800

Main asy diagram

Grease

Part #N017298

The manufacturer no longer makes this part, and there's no substitute part

Screw 330019-52
#37

Main asy diagram

Screw

Part #330019-52

The manufacturer no longer makes this part, and there's no substitute part

Power Tool Belt Hook N268241
#39

Main asy diagram

Power tool belt hook

Part #N268241

The manufacturer no longer makes this part, and there's no substitute part

Switch Label N439417
#48

Main asy diagram

Switch label

Part #N439417

The manufacturer no longer makes this part, and there's no substitute part