Hilti Te 17 Parts Diagram -

The Hilti TE 17, while a vintage workhorse, remains a favorite for DIYers and collectors due to its legendary build quality. If you are attempting a restoration or repair, finding a reliable parts diagram is the single most important step to success. The "Hilti TE 17 Parts Diagram" Review

Because the TE 17 is a vintage tool, original parts are no longer manufactured by Hilti, necessitating the use of aftermarket or "new old stock" components. Hilti Te17 Manual - sciphilconf.berkeley.edu hilti te 17 parts diagram

A typical service diagram for the TE 17 includes several critical groups of parts: The Hilti TE 17, while a vintage workhorse,

Common Failure:

Users ignore the carbon brushes until they wear down to the spring, which arcs and destroys the commutator. The diagram shows exactly how to access the brush caps without full disassembly. Piston (Item #19 – sometimes called “Drive Piston”):

• Piston (Item #19 – sometimes called “Drive Piston”): Connected to the crankshaft via a connecting rod. It slides back and forth.
• O-Ring (Item #20 – Critical Part #216720): A thick rubber ring on the piston. This is the #1 wear part. When it leaks air, you lose hammering power. The diagram shows its exact groove location.
• Impact Piston (Item #21 – “Flying Piston” or “Ram”): The free-moving piston that compresses air and strikes the tool.
• Barrel (Item #22): The steel tube containing both pistons. Scratches inside the barrel destroy both O-rings and pistons.
• Air Cushion: Not a physical part but a space. The diagram indicates the critical gap (typically 5–10mm) between the drive piston and impact piston. If the O-ring fails, this air pocket disappears, and the hammer stops.
• Connecting Rod & Crank (Items #23 & #24): Converts motor rotation to piston linear motion. The needle bearing (#25) inside the connecting rod often fails, causing a rhythmic “clunk” at low speed.

Critical note : Replacing the piston seal without the diagram often leads to incorrect orientation. The seal lip must face the ramming piston, not the motor.