Disconnect the power cord from the wall. Use the diagram to locate the main housing screws. Remove the outer casing carefully, taking note of varying screw lengths. Lay out removed parts on a magnetic tray in the exact order you removed them. Step 2: Diagnostic Cleaning
The TE 22 uses a . Instead of just gears clicking together like a standard drill, it uses a drive piston and a striker piston (also called a ram) to create high-impact energy.
Utilizing the parts diagram effectively requires a bit of strategy: hilti te 22 parts diagram work
To restore full hammer energy, separate the front barrel housing from the motor frame. Slide the crankshaft and attached connecting rod assembly forward out of the main gear casing. Pull the drive piston and internal flying striker piston from the core cylinder.
The internal "work" of the TE 22 is driven by a complex mechanical and electrical assembly. High-wear items frequently identified in parts lists include: Piston Assembly : Includes the drive piston (73555) striker piston (73554) , which generate the hammering action. Gears and Pinions : The mechanical rotation is handled by the bevel gear (73558) bevel pinion (73559) Electrical System : Standard repairs often require replacing the carbon brushes (73579) Seals and O-Rings : To maintain internal pressure and lubrication, various O-rings (70425, 70400) rotary shaft seals (70449) are critical. Where to Find Diagrams and Manuals Disconnect the power cord from the wall
Wash away all old, gritty grease and degraded oil from the internal gears and housings using a mild parts cleaner or degreaser. Dry thoroughly.
Unplug the tool. Clean the exterior of the housing with a rag to prevent dirt from entering the internal mechanical chambers. Step 2: Remove the Carbon Brushes Lay out removed parts on a magnetic tray
Rotary hammers require specialized gear grease that can withstand high temperatures and pressures. Do not overfill the gearbox casing, as excess grease causes hydraulic lock and bogs down the motor. Refer back to the diagram to ensure shims, washers, and clips face the correct direction during reassembly. Pro-Tips for Hilti TE 22 Maintenance