Hilti Sid 4 A22 Parts Diagram

| Diagram Reference | Part Name | Function | |------------------|-----------|----------| | 19 | Torx Screws (M3x10, etc.) | Hold clamshell together | | 20 | Dust Cover for Ventilation | Keeps debris out of motor | | 21 | Grease (Special Hilti #204) | Lubrication for impact mechanism |

If your hex chuck (Item 01) is broken, you find Item 01 in the diagram index. It might say:
01 – 2143782 – Hex Chuck & Sleeve Assembly (Sid 4 A22) – Qty 1

Do not assume parts from other Hilti models (like Sid 2-A22) fit. The gear ratios and housing molds differ.

The Hilti Sid 4 A22 parts diagram is more than a technical drawing—it’s a roadmap to extending the life of a high-performance tool. By understanding the exploded view, from the hex chuck (01) to the control board (13), you can diagnose issues with precision, order exactly what you need, and avoid costly service fees.

Final checklist before your next repair:

Whether you work in heavy construction or maintain a home workshop, mastering the Sid 4 A22’s anatomy will keep your impact driver running like new—impact after impact.

Need the latest Hilti Sid 4 A22 parts diagram?
Visit [Hilti’s official spare parts portal] or call 1-800-879-8000 (US) with your tool’s serial number ready.

This guide is for informational purposes. Always disconnect the battery before servicing your tool. Hilti is a registered trademark of Hilti Corporation.

Hilti SID 4 A22 – Common parts & assembly groups:

Where to find the real diagram:

Hilti SID 4-A22 is a compact 22V cordless impact driver designed for professional fastening in wood, metal, and masonry. To maintain or repair this tool, you can find the complete Hilti SID 4-A22 spare parts list or by contacting a local Hilti Center for official documentation. Core Components & Spare Parts

Commonly replaced parts for the SID 4-A22 include the following electrical and mechanical assemblies: Chuck Assembly (1/4" Hex):

Includes the 1/4" hexagonal click-in socket and locking sleeve (Part #2150017). Electronics Unit:

The main control switch with integrated electronic speed control (Part #2148040). Speed Regulator:

Essential for the tool's 3-gear torque and speed management (Part #2148041). Housing & Grip:

Ergonomically contoured tool body with an integrated LED work-area light around the chuck. Forward/Reverse Selector:

A physical switch with a safety lock to prevent accidental starts. Key Technical Specifications

Understanding the specs is vital for selecting the correct replacement parts: Battery Compatibility: B22 series Li-ion batteries and C4/36 series Gear Settings:

3 settings (Gear 1: 1000 rpm, Gear 2: 1500 rpm, Gear 3: 2700 rpm). Max torque reaches up to 1717 in-lb in gear 3. Approximately (tool body only) or including a standard battery. Maintenance & Repair Tips Genuine Parts: Hilti strongly recommends using only genuine spare parts

and approved consumables to ensure continued safety and performance. Chuck Repair:

When repairing the chuck, ensure the internal balls are properly greased to keep them in place during reassembly. Warranty Support: Hilti provides a 20-year warranty against manufacturing defects and 2 years of "wear and tear" coverage that includes batteries and chargers.

For complex internal repairs involving the gearbox or motor, it is best to use the Hilti Tool Service to maintain your warranty and ensure safety. , such as replacing the speed selector switch Spare parts for HILTI SID 4-A22 - XDrilled Hilti Sid 4 A22 Parts Diagram

Hilti SID 4-A22 is a compact 22V cordless impact driver featuring a 1/4" hexagonal click-in chuck and a brushless motor designed for medium-duty fastening. For maintenance and repairs, users frequently seek diagrams to identify components like the chuck assembly, trigger, and motor housing. Key Components & Spare Parts

While full schematics are often restricted to authorized service centers, common user-serviceable parts and their identifiers include: Chuck / Tool Holder (Part No. 2150017)

: A common repair item. Hilti provides a "rebuild kit" for this assembly, which includes the 1/4" hexagonal click-in chuck. Trigger Mechanism

: Features a new design for precise speed control and is a frequent focus for cleaning or replacement if the tool hesitates. Housing & Ergonomics

: Includes a grip designed for long-term comfort and four LED lights integrated into the head to illuminate the work surface. Drive Train

: Consists of the motor, gear selector switch (3 gears), and forward/reverse switch with an interlock. Technical Specifications for Part Compatibility Specification 21.6 V / 22 V Li-ion Chuck Type 1/4" Hexagonal click-in Max Torque 194 Nm (approx. 1,717 in-lb) in Gear 3 Impact Frequency 3,500 impacts/minute 0.95 kg (Tool body) Accessing Diagrams and Support

Official parts lists and exploded views are typically available through the following channels: Hilti Online Account : Registering your tool on the Hilti Canada Website

or your local region's portal can often unlock technical documents and spare part ordering. Instruction Manuals

: Basic product overviews and safety components are found in the Hilti SID 4-A22 Manual Repair Services

While a complete exploded parts diagram is primarily accessible via the official Hilti Tool Service portal or professional parts retailers, you can find a comprehensive breakdown of the core components in the Hilti SID 4-A22 Operating Instructions . Key External Components & Operating Controls Go to product viewer dialog for this item.

is a 21.6V cordless impact driver designed for precision and durability . Its primary external parts include:

Chuck (1/4" Hex Socket): Features an improved collar design for easier one-handed bit changes .

Torque/Speed Selector: A button at the base that allows you to cycle through 3 torque settings (max torque up to 194 Nm / 1,717 in-lb) . | Diagram Reference | Part Name | Function

LED Work Lights: Four bright LEDs encircling the chuck to provide shadow-free illumination of the work area .

Variable Speed Trigger: Controls the rotation speed based on the pressure applied .

Forward/Reverse Switch: Includes a middle-position safety lock to prevent accidental starts . Common Spare Parts

For internal repairs, these are the most frequently requested components for the Original Chuck Assembly (#2150017) Go to product viewer dialog for this item. : Includes the locking sleeve and spring mechanism Electronics Unit & Switch (#2148040) Go to product viewer dialog for this item. : The main control board and trigger assembly Speed Regulator (#2148041) Go to product viewer dialog for this item.

: Responsible for switching between the three power modes .

Carbon Brushes: While newer Hilti models are brushless, check your specific serial number as older 22V variants may require brush maintenance. Maintenance & Repair Resources

Official Diagrams: You can view interactive diagrams by entering your tool's serial number on the Hilti Online Spare Parts Catalog.

Step-by-Step Guides: Independent technicians often post visual teardowns, such as the SID 4-A22 Chuck Replacement Guide on TikTok .

Authorized Service: If your tool is still under Hilti’s 2-year "no cost" warranty, it is recommended to send it to a Hilti Center for repair to maintain its safety certifications. Operations Manual - SID 4-A22

This is the front of the tool and the most common area for wear and tear.

Let’s break down the key sections of the parts diagram. Hilti typically organizes its exploded views into 5 to 7 groups.

The parts diagram is essential for:

This section houses the impact mechanism. If your hex chuck (Item 01) is broken,

| Diagram Reference | Part Name | Function | Common Issue | |------------------|-----------|----------|---------------| | 01 | Hex Chuck (¼ inch) | Accepts bits; quick-release sleeve | Worn out detent balls; bit slippage | | 02 | Impact Anvil | Transfers rotational impact | Cracking under extreme torque | | 03 | Hammer & Cam Mechanism | Creates percussive force | Loss of impact (worn hammer dogs) | | 04 | Front Housing Cover | Protective shell; holds bushing | Cracks from drops | | 05 | O-Ring Seal | Prevents dust ingress into gearbox | Dry rot leading to internal contamination |

Pro Tip: 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.