milwaukee 2939-20 M18 FUEL Braking Die Grinder Instruction Manual

October 30, 2023
Milwaukee

milwaukee 2939-20 M18 FUEL Braking Die Grinder

milwaukee-2939-20-M18-FUEL-Braking-Die-Grinder-product

Product Information

The M18 FUELTM Braking Die Grinder, Slide Switch is a  high-performance die grinder that is designed to provide efficient and precise grinding and cutting. The product has a catalog number of 2939-20 and starting serial number N43A. The product comes with a service parts list that specifies the required catalog number and serial number when ordering parts. The product is designed with a spindle housing assembly, rotor assembly, collet nut assembly, electronic assembly, and housing kit. The product comes with a wiring instruction manual that enables easy installation of the electronics assembly.

Product Usage Instructions

Before using the M18 FUELTM Braking Die Grinder, Slide Switch, ensure that all the components are properly assembled and securely in place. Follow the below usage instructions:

  1. Connect the product to a power source by following the wiring specifications provided in the wiring instruction manual.
  2. Ensure that all the screws are tightened as per the screw torque specifications mentioned in the service parts list.
  3. Insert the grinding or cutting tool into the collet nut assembly and tighten it securely using the collet nut.
  4. Switch on the product by sliding the switch button to the ON position.
  5. Use the product to grind or cut the material by holding it firmly with both hands and applying slight pressure on the material.
  6. After use, switch off the product by sliding the switch button to the OFF position and disconnect it from the power source.
  7. Clean the product after every use by wiping it with a dry cloth. Do not use water or any other liquid to clean the product.

SERVICE PARTS LIST

SPECIFY CATALOG NO. AND SERIAL NO. WHEN ORDERING PARTS| REVISED BULLETIN| DATE

Dec. 2022

|
---|---|---|---
M18 FUEL™ Braking Die Grinder, Slide Switch|
WIRING INSTRUCTION

SEE PAGE 2

|
CATALOG NO. 2939-20| STARTING                N43A

SERIAL NO.

|

EXAMPLE:
Component Parts (Small #) Are Included When Ordering The Assembly (Large #).

Product Overview

milwaukee-2939-20-M18-FUEL-Braking-Die-Grinder-1

FIG. PART NO. DESCRIPTION OF PART NO. REQ.
1 ————— Collet Nut 1
2 ————— Collet 1
3 05-88-1255 St Screw M3.5x16MM PH B 4
4 31-15-0272 Spindle Housing Cover 1
5 22-80-0041 LED Holder 1
13 42-90-0024 Coupler 1
28 31-15-0103 Dust Cover 1
36 ————— St Screw M2.6×0.907 FH Phillips 2
30 06-82-1087 St Screw M3.0x1.058 PH Torx T10 B 1
31 06-82-2025 St Screw M3.5x16MM PH B Torx 5
32 31-92-0286 Slide Pole 1
33 40-50-0243 Spring 1
34 42-42-0147 Lock-On Button 1
35 43-84-0207 Rapid Stop Plate 1
36 ————— Handle Housing Cover 1
37 ————— Handle Housing Support 1
38 49-96-4090 11/16″ Open End Wrench 1
39 44-68-0027 Rubber Plug 1
40 12-20-0587 Service Nameplate 1
60 28-50-0113 Spindle Housing Assembly 1
62 16-01-0071 Rotor Assembly 1
63 44-40-0091 Collet Nut Assembly 1
65 14-20-0400 Electronic Assembly 1
66 14-38-0326 Housing Kit 1

SCREW TORQUE SPECIFICATIONS

SCREW TORQUE SPECIFICATIONS

FIG.

|

PART NO.

|

WHERE USED

| SEAT TORQUE
(kgf-cm)| (lb-in)
3| —————| St Screw M3.5x16MM| 16-20| 6.1-17.3
19| —————| Taptite Screw M3.5×0.6 T10S| 15-18| 13-15.6
25| —————| Taptite Screw M2.3×0.907 T8| 5-6| 4.3-5.2
36| —————| Taptite Screw M2.6×0.907 Philips| 4-5| 3.4-4.3
40| —————| Taptite Screw M3.0x1.058 T10| 3.5-4.5| 3-3.9
41| —————| Taptite Screw M3.5x16MM T10| 12.5-15.5| 10.8-4.3

SERVICE WIRING

For the sake of clarity, the white wire is represented in gold color in the diagram.

milwaukee-2939-20-M18-FUEL-Braking-Die-Grinder-2

WIRING SPECIFICATIONS

WIRING SPECIFICATIONS

Wire No.| Wire Color|

Length

|

Terminals, Connectors and 1 or 2 End Wire Preparation

1| Black| 74 +4/-0| Connect with Motor and Control Board
2| Red| 89 +4/-0| Connect with Motor and Control Board
3| White| 104 +4/-0| Connect with Motor and Control Board
4| Red| 55 +4/-0| Connect with Fuse and Control Board
5| Black| 70 +4/-0| Connect with Terminal Block and Control Board
6| Red| 40 +4/-0| Connect with Terminal Block and Fuse

Prior to installing the electronics assembly (65) into the housing support (37), place grounding terminal over screw boss as shown. Route ground wire, removing as much slack as possible. Be sure wire is pressed firmly to the back of the wire traps.

Install the electronics assembly as shown.
Route wires around screw bosses and into wire traps. Be sure all components are seated squarely and firmly in place. Be sure there is no interference when installing the housing cover (36).

milwaukee-2939-20-M18-FUEL-Braking-Die-Grinder-4

References

Read User Manual Online (PDF format)

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Download This Manual (PDF format)

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