This guide is for informational purposes. Always disconnect the battery before servicing your tool. Hilti is a registered trademark of Hilti Corporation.
If your Sid 4 A22 feels like a standard drill (no impacting), the hammer (03) or the cam spring is likely broken. The diagram shows how these interlock—replace as a set. Section B: Planetary Gearbox (Transmission) | Diagram Reference | Part Name | Function | Common Issue | |------------------|-----------|----------|---------------| | 06 | Ring Gear (Annulus) | Outer gear of planetary system | Stripped internal teeth | | 07 | Planet Carrier (Stage 1 & 2) | Holds planet gears | Cracked carrier arms | | 08 | Sun Gear (Input) | Connects motor shaft to first stage | Excessive wear (noise) | | 09 | Needle Bearing | Reduces friction on carrier | Seizure due to lack of grease | Hilti Sid 4 A22 Parts Diagram
A: No. The battery interface (17) is completely different. There is no retrofit part listed. You would need a new tool. This guide is for informational purposes