Hilti Sid 4 A22 Parts Diagram May 2026

The most reliable source for specific part numbers found in the diagram.

If the repair looks too complex (especially the impact mechanism), Hilti's "Tool Fleet Management" or repair centers offer quick turnarounds.

Some parts are only sold as a "kit." For example, you might not be able to buy a single gear; you may need to buy the entire Gearbox Assembly . ⚠️ Maintenance Tips for Longevity Hilti Sid 4 A22 Parts Diagram

Understanding the internal components of your Hilti SID 4-A22 impact driver is essential for maintaining tool longevity and performing successful DIY repairs. This guide breaks down the major assemblies found in the parts diagram to help you identify what you need for a fix. 🛠️ Core Component Breakdown

While third-party sellers exist, using genuine Hilti parts ensures the tool maintains its safety ratings and torque specifications. The most reliable source for specific part numbers

The plastic "flipper" that toggles forward and reverse. It is a frequent point of physical breakage. 4. Housing & External Parts

The heavy metal piece that strikes the bit. If your bits are wobbling excessively, the anvil or the front bushing may be worn. The plastic "flipper" that toggles forward and reverse

The SID 4-A22 is built with a modular design, making it easier to swap out specific sections rather than replacing the entire unit. 1. The Impact Mechanism & Chuck

The SID 4-A22 utilizes a brushless motor, which is more efficient but usually serviced as a single block. The heart of the power delivery.