: Hilti housing screws typically require specific Torx (T-handle) drivers. Avoid using standard Phillips heads to prevent stripping.
Slide the brushless motor rotor out of the stator assembly. Warning: Strong magnetic forces will pull the rotor; keep your fingers clear of pinch points. hilti+sid+4+a22+parts+diagram
Disclaimer: Always disconnect the battery before disassembly. Use genuine Hilti parts only – aftermarket components can damage the impact mechanism. : Hilti housing screws typically require specific Torx
The "brain" of the tool. It regulates current from the battery, controls the brushless motor timing, and manages the 3-speed selector switch on the foot. Warning: Strong magnetic forces will pull the rotor;
The SID 4 A22 features a (Electronic Commutated). No carbon brushes to replace.
Hilti strongly advises that to ensure safe and reliable operation, you should use .
Use this table to match a part name with its likely diagram label and Hilti service number.