3940 (SER 161-1001) Milwaukee Electric Drill - Overview
Sections of the 3940
Keep searches simple, eg. "belt" or "pump".
25x52x20.6 Ball Brg 2 Se
Part #: HD10116964
Manufacturer Part #: 02-04-2200
This is a genuine Milwaukee part sourced directly from the manufacturer for use in drills and engines. The ball bearing attaches to the gear case and is made of metal. A screwdriver may be necessary d...
$47.95
In Stock
Ball Bearing
Part #: HD10116841
Manufacturer Part #: 02-04-0820
This is a genuine OEM supplied replacement part which is used with Milwaukee power tools. Ball bearings are used to reduce friction between rotating parts, they experience constant wear from pressure,...
$6.07
On Order
Trostel Seal
Part #: HD10132292
Manufacturer Part #: 45-06-0050
This authentic OEM trostel seal is found in the water swivel housing of your electric drill. It helps to create a watertight barrier that keeps water away from the internal components of the drill. Th...
$45.95
In Stock
Shut Off Valve
Part #: HD10133148
Manufacturer Part #: 45-80-0060
This high-quality part is supplied directly from the original equipment manufacturer. It is specially designed for Milwaukee drills. The shut off valve allows a user to turn on and off the water flow....
$34.95
In Stock
Brush Retaining Screw
Part #: HD10123326
Manufacturer Part #: 23-44-0030
This manufacturer sourced replacement part designed for use on Milwaukee power tools. The purpose of the brush cap is to secure the carbon brush in the tool. This cap has external threads that thread ...
No Longer Available
Carbon Brush
Part #: HD10122137
Manufacturer Part #: 22-18-0055
Genuine Milwaukee replacement part
Includes 1 Carbon Brush with wire lead and brush spring attached.
• Worn brushes are often the cause of a poorly running motor • Replacing brushes can fix a...
No Longer Available
O-ring
Part #: HD10126919
Manufacturer Part #: 34-40-1100
This replacement part is supplied directly from the original equipment manufacturer for use with Milwaukee drills. It is one of the special o-rings which are utilized to provide an air-tight seal for ...
$5.95
In Stock
O-ring
Part #: HD10126926
Manufacturer Part #: 34-40-1200
This is a genuine manufacturer sourced replacement part, it is commonly utilized on Milwaukee power tools. It helps to distribute the pressure evenly and provide an air-tight seal between connected pi...
$5.95
On Order
Water Swivel Housing
Part #: HD10130566
Manufacturer Part #: 43-76-0051
The water swivel housing goes next to the trostel seal. This item is an original part from Milwaukee for use in drills. It is made out of metal and is sold individually. A wrench and a set of pliers m...
No Longer Available