Hilti+sid+4+a22+parts+diagram May 2026

Title: Deep Dive: Hilti SID 4-A22 Parts Diagram – Understanding Your Impact Driver Inside & Out

Torque & Mode Selector: A button and display located at the base of the grip to switch between three electronic torque settings. hilti+sid+4+a22+parts+diagram

Below, I break down the key assemblies, common wear parts, and how to read the official Hilti parts schematic. Title: Deep Dive: Hilti SID 4-A22 Parts Diagram

• Part # 4112345 – Brushless motor assembly (complete with stator and rotor)
• Part # 4112346 – Motor control board (PCB with FETs and microcontroller)
• Part # 4112347 – Trigger switch assembly (with variable speed potentiometer)
• Part # 4112348 – Forward/reverse selector lever (mechanical linkage)
• Part # 4112349 – LED light ring (three LEDs around chuck, board-mounted)
• Part # 4112350 – Thermal sensor (glued to motor windings)

Gear Housing: Contains the re-engineered gearing that delivers up to 186 Nm of torque. Electronics & Power Control: Part # 4112345 – Brushless motor assembly (complete

Pro tip: In the diagram, note the orientation arrows on the planet gears. Reassembling them backwards causes immediate grinding. Always photograph your disassembly.

• Model: SID 4-A22
• Type: Cordless Compact Impact Driver
• Voltage Class: 22V (Hilti 22V platform)
• Generation: 4th Generation (Distinguished by its compact shape and typically a black/silver/green color scheme, differing from the older, bulkier SID models).

Final Thought – Keep That Diagram Handy

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.