Never perform maintenance or look inside a tool that is plugged into a power source.
Deliver electricity to the spinning armature. They wear down naturally over time and are designed for easy replacement. Trigger Switch: Controls power delivery to the motor. Common Wear Parts That Require Replacement
The power source of the tool consists of standard universal motor parts.
Intermittent power or excessive sparking inside the casing usually means the carbon brushes are completely worn down and need replacement. Step-by-Step Guide to Reviewing the Schematic hilti te 17 parts diagram
A common point of failure is the "brush bridge" — the plastic housing that holds the carbon brushes against the motor's commutator. Over time, this plastic becomes brittle and is known to break. Hilti no longer produces this bridge, so finding a replacement or a salvageable part is necessary. This is one of the few issues that can permanently sideline an otherwise functional machine.
A service manual or diagram allows you to see how the motor housing endcap assy (Part 4) connects to the gear housing. When replacing parts, it is highly recommended to buy a "servisní sada" (service kit) which often includes bearings, O-rings, seals, and brushes.
The schematic details the , which houses the primary pinion and the main gear. For anyone attempting a repair, this section of the diagram is crucial for ordering the correct seals and gaskets . A common failure in older TE 17s is grease leakage; the parts diagram identifies the exact O-rings needed to reseal the housing, preventing the catastrophic lubrication loss that kills gears. Never perform maintenance or look inside a tool
If your TE 17 spins but refuses to hammer into concrete, the pneumatic seals have likely disintegrated due to age and friction.
If your drill bits are slipping or won't lock into place, the internal steel balls or the spring inside this assembly are likely worn out. 2. The Gearbox and Safety Clutch
Looking for a specific part number or a printable version of the Hilti TE 17 parts diagram? Leave a comment below or contact Hilti service support with your tool’s serial number for exact match components. Trigger Switch: Controls power delivery to the motor
When reviewing the parts diagram for a repair project, pay extra attention to these frequently replaced items:
If you are looking for specific replacement parts or a high-resolution diagram: g., the chuck or the piston)?
📌 Always use the exact part number from the diagram. Generic parts can damage the tool or void any remaining service options.
If your diagram study reveals a needed part, here is where to look: