Product Description
**Milwaukee parts change not only by model# but also by serial number. Milwaukee's site lets you look up your tool's parts diagram. Enter Cat# and Select Service Parts. Also match Serial Number.
Milwaukee Full Service Maintenance Kit
Model Number: 14-46-9921
The Milwaukee 14-46-9921 is a genuine OEM Maintenance Service Kit for the 5518-21 1-3/4 in. SDS-Max Rotary Hammer. It is the complete scheduled-service kit for the hammer: it bundles the wear parts that a professional rotary hammer uses up over time, the seals, o-rings, Turcon seals, the rubber dust shield and gasket, the bearing shield, the spring ring and back press ring, three tubes of the correct Type Q2 grease, and a carbon brush assembly, so a full service can be done in one purchase instead of chasing parts one at a time. Milwaukee recommends this maintenance at each carbon brush change: replacing the vital o-rings, seals, and grease on that schedule keeps the pneumatic impact mechanism sealed and lubricated, which protects impact energy and prevents the wear and secondary failures that come from running the hammer with worn seals or dry grease. Using the genuine Milwaukee OEM kit ensures the correct combination of seals, grease, and brushes matched to this hammer.
This maintenance service kit is cataloged for the 5518-21 1-3/4 in. SDS-Max Rotary Hammer, serial P63A, bulletin 54-24-2795, and the parts it contains are marked on the service diagram as components of the 14-46-9921 Service Maintenance Kit. The kit includes three tubes of Type Q2 grease (49-08-5355) and a 120V carbon brush assembly along with the seals and o-rings. Because replacing seals and lubricant on a corded rotary hammer is involved work on a pressurized impact mechanism, this kit is best installed at a Milwaukee authorized service station or factory service center. Separately, keep bit grease (50-08-5317) on hand to grease the SDS-Max bit shank at installation. Because Milwaukee specifies service parts by serial number as well as catalog number, verify your catalog and serial number against the official Milwaukee service parts diagram before ordering, since running production changes can alter part compatibility within the same catalog number.
Features
- Genuine Milwaukee OEM maintenance service kit
- For the 5518-21 1-3/4 in. SDS-Max Rotary Hammer
- The complete scheduled-service kit for the hammer in one purchase
- Replaces the wear parts a rotary hammer uses up: seals, o-rings, and gaskets
- Includes the rubber dust shield, Turcon seals, and bearing shield
- Includes three tubes of the correct Type Q2 grease (49-08-5355)
- Includes a 120V carbon brush assembly for the brush change
- Milwaukee recommends this service at each carbon brush change
- Keeps the impact mechanism sealed and lubricated to protect impact energy
- Prevents the wear and secondary failures of running with worn seals
- Best installed at a Milwaukee authorized service center
- Matched combination of seals, grease, and brushes for this hammer
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 14-46-9921
- Official Description: Maintenance Service Kit
- Component Type: Rotary hammer scheduled maintenance service kit
- Primary Fitment: Milwaukee 5518-21 1-3/4 in. SDS-Max Rotary Hammer, SER P63A
- Also Referenced On: Verify additional applications using Milwaukee's online parts lookup
- Parts Diagram Position: Service Maintenance Kit on bulletin 54-24-2795 (components marked on the diagram)
- Quantity: Sold individually (1 kit)
- Part Type: Genuine Milwaukee OEM Replacement Part
Includes
- (1) Rubber Dust Shield (45-12-5316)
- (1) Retaining Ring (34-60-5316)
- (2) Spindle O-Ring (34-40-5316)
- (2) O-Ring (34-60-5319)
- (2) Turcon Seal (45-06-5317)
- (3) Foam Bushing (42-42-0054)
- (1) Bearing Shield
- (1) Back Press Ring (34-60-0072)
- (2) O-Ring (34-40-0078)
- (1) Rubber Gasket (43-44-0012)
- (1) O-Ring (34-40-5309)
- (1) Spring Ring (44-90-5319)
- (1) O-Ring (45-88-0076)
- (6) Type Q2 Grease, 2.8 oz / 80g tube (49-08-5355)
- (1) 120V Carbon Brush Assembly (22-18-6040)
The rotary hammer, the bit grease (50-08-5317) for the SDS-Max shank, and major assemblies like the spindle, anvil, and gearcase are NOT included and are sold separately. This kit is the scheduled-service wear parts, seals, grease, and brushes. Always verify by serial number using Milwaukee's online parts lookup before ordering.
