You don’t need to wait for failure. Use the parts diagram to plan a 500-hour service:
Print the Hilti SID 4-A22 parts diagram and tape it inside your gang box. When your impact driver starts acting up, you’ll diagnose the issue in 30 seconds instead of guessing. And remember – Hilti tools are designed to be repaired, not thrown away. That diagram is your blueprint to 10 more years of driving lags and self-tappers.
Have you replaced a part on your SID 4-A22? Drop your experience below. Which part wore out first for you?
Disclaimer: Always disconnect the battery before disassembly. Use genuine Hilti parts only – aftermarket components can damage the impact mechanism.
A complete parts diagram and spare parts list for the Hilti SID 4-A22 Cordless Impact Driver can be found in its official Operating Instructions
or through professional spare parts catalogs. These documents provide a visual breakdown of the internal motor, switch assembly, and housing components. device.report Key Components & Spare Parts
The SID 4-A22 consists of several critical assemblies often sought for repair or replacement: Original Chuck (1/4" Hex Socket): hilti+sid+4+a22+parts+diagram
The click-in tool holder with a locking sleeve (Part #2150017). Electronics Unit Switch:
The main control assembly that manages power and speed (Part #2148040). Speed Regulator:
The module responsible for electronic speed control (Part #2148041). Forward/Reverse Switch: Includes a switch-on interlock for safety. LED Illumination: Work-area light located around the chuck. Belt Hook:
An optional accessory that can be fitted to the installation opening. Where to Find Diagrams & Parts
You can access detailed technical data and exploded views via these platforms: Operations Manual - SID 4-A22
Searching for a Hilti SID 4-A22 parts diagram is the first step toward a successful DIY repair or maintenance check. This compact 22V impact driver is a beast on the job site, but even the best tools need a bit of TLC after heavy use. You don’t need to wait for failure
Whether you're dealing with a worn-out chuck or just want to see how the torque selector fits together, having the right visual guide is essential. You can find official diagrams and spare parts through retailers and service centers like or by referencing the Hilti Operations Manual available at The Home Depot Key Components Often Found in Diagrams When looking at a schematic for the Hilti SID 4-A22 , you'll typically see these core parts: Chuck Assembly (1/4" Hex Socket)
: The locking sleeve and bit holder that takes most of the wear. Control Switch & Speed Regulator
: The trigger assembly that handles electronic speed control. Torque Selector Button & Display
: Located at the base, this allows you to toggle between three settings. Forward/Reverse Switch : Includes the safety lock in the middle position. LED Work-area Light
: Integrated into the tool head to illuminate your workspace. B22 Battery Interface
: The connection point for Hilti's 21.6V lithium-ion batteries. images.thdstatic.com Where to Get Parts and Guides Operations Manual - SID 4-A22 Disclaimer: Always disconnect the battery before disassembly
* 4.1 Impact wrench. Rated voltage. 21.6 V. * Weight in accordance with EPTA procedure 01/2003. 1.5 kg. Rated speed under no load. images.thdstatic.com Operations Manual - SID 4-A22
Note: The search term "Hilti SID 4-A22" appears to be a combination of two different Hilti tools. The SID 4-A22 does not exist as a single model number.
Most likely, you are looking for one of the following two tools:
This article focuses on the Hilti SID 4-A22 (4th Gen 22V Impact Driver), as this is the closest match to your specific string.
Part #s: 225411 (L housing), 225412 (R housing), 224570 (trigger)
Important: 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.