Milwaukee M18 FUEL™ ONE KEY™ 1" Extended Impact Wrench
Service Parts List
Bulletin No.: 54-26-2980
Catalog No.: 2869-20
Revised Bulletin Date: Oct. 2020
Starting Serial: L12A
Wiring Instruction: See Page 3
Exploded View Diagram Description
The document includes an exploded view diagram illustrating the internal components of the Milwaukee M18 FUEL™ ONE KEY™ 1" Extended Impact Wrench. This diagram visually represents how various parts assemble, with numbered callouts corresponding to the parts listed in the table below. It aids in identifying specific components for service and replacement.
Parts List
| FIG. NO. | PART NO. | DESCRIPTION OF PART | NO. REQ. |
|---|---|---|---|
| 3 | 44-90-9001 | C-Ring | (1) |
| 4 | 34-40-2867 | O-Ring | (1) |
| 5 | 1" Extended Anvil | (1) | |
| 6 | 02-02-0255 | 17/32" Steel Ball | (1) |
| 7 | 45-88-1827 | Anvil Washer | (1) |
| 14 | 32-65-0380 | Ring Gear | (1) |
| 15 | Planet Gear | (3) | |
| 16 | Planet Gear Pin | (3) | |
| 17 | 43-44-8010 | Gasket | (1) |
| 18 | 34-60-0130 | Retaining Ring | (1) |
| 19 | 45-06-0042 | Motor Seal | (1) |
| 21 | 06-82-8990 | M8 x 27mm Cap Hd. Hex Mach. Scr. | (4) |
| 25 | 05-74-1030 | M5 x 12mm Pan Hd. Tapt. T-25 Screw | (2) |
| 31 | 45-72-0087 | Trigger Cap | (1) |
| 32 | Coin Cell Door | (1) | |
| 33 | M2.6 x 6mm Flat Hd. Phillips Screw | (2) | |
| 34 | 40-50-0027 | Spring Plate | (1) |
| 36 | Forward/Reverse Shuttle with Magnets | (1) | |
| 37 | 05-81-2005 | Housing Halve - Right | (1) |
| 38 | 05-81-2005 | M5 x 28mm Pan Hd. ST T-25 Screw | (5) |
| 39 | 06-82-8895 | M4 x 14mm Pan Hd. ST T-20 Screw | (10) |
| 40 | 06-82-9615 | M8 x 39mm Cap Hd. Hex Mach. Screw | (4) |
| 43 | 43-86-0006 | Rubber Isolator for Speed Board | (1) |
| 47 | Rubber Slug | (4) | |
| 48 | Housing Halve - Left | (1) | |
| 51 | 14-20-4005 | Sensor Board Assembly | (1) |
| 52 | 06-82-5270 | #6-32 x 1/4" Pan Hd. Tapt. T-20 Scr. | (1) |
| 53 | 65-31-4735 | Jumper Wire | (1) |
| 54 | M3 x 16mm Pan Hd. ST T-10 Tamperproof | (3) | |
| 55 | Work Light | (1) | |
| 56 | 49-16-2566 | Rubber Boot - Extended Anvil | (1) |
| 57 | 45-36-7017 | Spacer | (1) |
| 58 | M5 x 13mm PH T-25 Scr. w/ Washer | (2) | |
| 59 | Hook Ring Bracket | (1) | |
| 60 | Hook Ring | (1) | |
| 61 | 45-94-0024 | Knob with Insert Nut | (1) |
| 66 | 43-62-2868 | Side Handle Grip | (1) |
| 69 | 3V Coin Cell Battery (CR2032H) | (1) | |
| 72 | 12-20-2800 | Service Nameplate | (1) |
| 74 | 42-55-2675 | M18 FUEL Tool Bag | (1) |
| 75 | 28-50-2565 | Front Gearcase Assembly-Ext. Anvil | (1) |
| 76 | 42-06-2785 | Extended Anvil Assembly | (1) |
| 77 | 14-46-9195 | Impacting Assembly | (1) |
| 78 | 44-66-6195 | Rear Gearcase Assembly | (1) |
| 79 | 16-01-2870 | Rotor Assembly | (1) |
| 80 | 14-20-3175 | Electronics Assembly | (1) |
| 81 | 14-50-7005 | Isolator Assembly | (1) |
| 82 | 14-67-0290 | Coin Cell Door Kit | (1) |
| 83 | 14-34-6000 | Side Handle Assembly | (1) |
| 84 | 14-46-2867 | Tether Ring Kit | (1) |
| 85 | 45-24-2560 | Forward/Reverse Shuttle Kit | (1) |
| 86 | 31-44-5397 | Housing Kit | (1) |
| 87 | 44-68-0710 | Rubber Plug | (1) |
| 91 | 22-09-2615 | LED Assembly | (1) |
| 92 | 45-24-2565 | Mode Selector Assembly | (1) |
Lubrication Notes
Grease Type: 'J' Grease
Part No.: 49-08-4220, 1 lb. can
Note: When servicing, remove 90-95% of existing grease before applying Type 'J'. Original grease may differ in color and compatibility. Clean gear assemblies with a clean, dry cloth before reassembly. Lightly coat all highlighted parts with 'J' grease, applying a greater amount to internal and external gear teeth.
Lubrication Steps:
- Lightly coat inside bushing opening with approximately 2g grease.
- Coat both sides of the anvil washer with grease.
- Apply a thin coat of grease to the anvil surface, approximately 7.5g.
- Lightly coat the anvil steel ball with grease.
- Coat the three planet gears with grease. Apply a generous amount of grease to the exterior teeth of the three planet gears.
- Lightly coat planet gear pins with grease.
- Place a generous amount of grease to the interior teeth of the ring gear.
- Apply grease to the surface shown on the rear gearcase.
- Place grease on the teeth of the rotor pinion.
Note: The Impacting Assembly (77) comes completely pre-lubricated and should not be disassembled.
Diagram Description: Illustrations show specific points on internal components where grease should be applied during assembly, referencing part numbers and providing visual guidance for lubrication steps.
Screw Torque Specifications
| FIG. | PART NO. | WHERE USED | SEAT TORQUE (KG/CM) | SEAT TORQUE (IN/LBS) |
|---|---|---|---|---|
| 21 | 06-82-8990 | Rear Gearcase Assy. | 150±15 | 130±13 |
| 25 | 05-74-1030 | Bearing Plate-Rotor | 53±5 | 46±4 |
| 33 | Coin Cell Door | 4 | 3 | |
| 38 | 05-81-2005 | Right Housing Halve | 30±3 | 26±2 |
| 39 | 06-82-8895 | R & L Housing Halves | 15±2 | 13±1 |
| 40 | 06-82-9615 | Motor Cage-Elect. Assy. | 150±15 | 130±13 |
| 52 | 06-82-5270 | Front Gearcase-Ground | 17±2 | 14±1 |
| 54 | LED Assembly | 8±1 | 7±1 | |
| 58 | Hook Ring Bracket | 95±5 | 82±4 |
Reassembly Notes
For reassembly, pay close attention to the following:
- Take note of wire routing and position within wire guides and traps while dismantling the tool.
- Ensure all components of the electronics kit are seated firmly and squarely in the handle recesses.
- Avoid pinched wires; confirm all wires and sleeves are pressed completely down in wire guides and traps.
- Before securing the handle cover, ensure there are no interferences with the handle support.
- Prior to installing the battery, check for proper functionality of the shuttle and triggers.
- Install the battery and depress the switch trigger to confirm the tool is operating properly.
