Unlike older brushed models, this high-efficiency motor eliminates carbon brushes, reducing maintenance and increasing runtime per charge. Speed Regulator (#2148041):

Registered fleet customers can often access more detailed technical documents through the Hilti website by entering their tool's serial number. Safety Note:

The Hilti SID 4 A22 A22 parts diagram provides a detailed overview of the drill's components and their relationships. This guide can be helpful for users who need to perform maintenance, repair, or troubleshooting tasks on their drill. If you're unsure about any component or procedure, it's always best to consult the manufacturer's documentation or contact a Hilti-authorized service center.

Based on technical reviews and common service requests, the following parts are most frequently cited in maintenance and repair discussions: