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A circular circuit board fitted with four LEDs, positioned directly behind the chuck assembly. D. The Shell: Housing & External Accoutrements
The chuck is the most heavily used component and is subject to significant wear. The (also known as the nozzle) is a common failure point. If your bits are no longer seating properly or the retaining mechanism fails, this part will need replacement. Replacement chucks or bit holders for the SID 4-A22 can be found through online marketplaces like eBay, but ensure they are genuine Hilti parts for safety and reliability. hilti+sid+4+a22+parts+diagram
The battery guide rails (#225413) are a common break point. The parts diagram shows they are replaceable independently – you don’t need a full housing.
The Hilti SID 4-A22 Go to product viewer dialog for this item. This public link is valid for 7 days
An ergonomic grip paired with a robust magnesium front housing.
Retaining ring (circlip), springs, ball bearings, the chuck sleeve, and washers. Can’t copy the link right now
Whether you need to fix a slipping bit or replace a sparking motor, understanding the internal anatomy of this 22V cordless tool is essential for a successful DIY repair. Key Components of the Hilti SID 4-A22 Diagram