IM3600 Bosch starter rotor Weichai Heavy Duty Truck starter armature rotor 612600090561 is suitable for Bosch Weichai

Bosch Weichai Starter Rotor Structure and Principle:The starter rotor mainly consists of an armature shaft, armature core, armature windings, and commutator. Its working principle is based on the force exerted on a current-carrying conductor in a magnetic field, converting electrical energy into mechanical energy to drive the engine crankshaft and start the engine.Specifications:Different models have varying specifications. For example, the IM3600 Bosch starter rotor for Weichai Heavy Duty has: • Diameter: 60 mm • Length: 180 mm • Teeth: 13 • Rated voltage: 24V  Performance Features: • Usually uses pure copper wire windings for excellent conductivity and heat dissipation • Effectively improves starter power and service life • Armature shaft undergoes precision machining and heat treatment for high strength and wear resistance • Capable of withstanding the high torque during startup  Applicable Models:Mainly used for Weichai series engines, such as: • Weichai WD615 engine • Steyr series vehicles
for reference only
This passage may be from the Taobao product page titled 'Weichai WD615 Engine Doctor New Four-Stage Starter Motor Rotor Armature Genuine Product' released on February 17, 2025. The page includes specifications for 'Doctor Weichai Starter Rotor' (diameter 60mm, length 180mm, 13 teeth, 24V), performance features (pure copper coil, precision armature shaft), and applicable vehicle models (Weichai WD615, Steyr), which are highly consistent with the original text description. 

The installation method of Bosch starter rotor varies slightly by model, but the general steps are as follows: Preparation: Ensure the working area is clean and prepare the required tools, such as appropriate sockets, wrenches, screwdrivers, etc. Install components such as the one-way clutch: Slide the intermediate support plate, one-way clutch, and retaining ring back onto the rotor shaft, then install the shaft end lock ring. Install the rotor into the drive end cover: First, fit the shift fork into the shift fork sleeve of the one-way clutch, then install the rotor with the intermediate support plate and one-way clutch into the drive end cover, and finally tighten the screws of the intermediate support plate. Install the thrust washer, stator, etc.: Install the thrust washer on the shaft at the rotor rectifier end, then slide the stator and brush end cover onto the rotor according to the alignment marks made during disassembly, and then tighten the two connecting bolts. Install the brushes

The core precautions for installing the Bosch starter motor rotor are: cleaning and alignment, protection of key components, standardized fastening, and avoiding post-installation failures. Cleaning and Alignment Thoroughly clean oil stains and impurities from components such as the rotor shaft, bearings, and end caps before installation to prevent wear or jamming. Strictly align the alignment marks of the stator and end caps marked during disassembly to avoid abnormal operation caused by magnetic field deviation. Protection of Key Components The surface of the rotor commutator must be kept clean and free of scratches. Avoid pressure deformation of the brush holder and spring during installation. The installation direction of the one-way clutch must not be reversed. Ensure that the shift fork and the clutch slot are accurately engaged without looseness. The thrust washer must be correctly installed in the specified position to prevent axial movement of the rotor. Fastening and Wiring Specifications All bolts and screws must be tightened to the specified torque to avoid thread or end cap damage due to over-tightening, and vibration and abnormal noise due to under-tightening.</

Other important points Avoid hitting the rotor shaft or commutator with hard objects during installation to prevent component deformation. After installation, manually rotate the rotor to ensure smooth operation without jamming or abnormal friction noise. If the model has a special structure (such as a rotor with a sensor), the corresponding components must be installed according to the instructions in the manual.

References：The precautions for installing the rotor of a Bosch starter motor mainly come from Bosch's official technical manuals, automotive repair-related textbooks, and professional automotive repair forums, etc. The following is a detailed introduction: Bosch Official Technical Manuals: Bosch releases detailed repair and installation manuals for different models of starter motors, which include specific steps, precautions, and technical parameters for rotor installation. For example, the repair and test instructions for the Bosch T1 alternator contain specific guidance on the installation of the rotor and stator. Automotive Repair Textbooks: Some textbooks on the structure and repair of automotive electrical equipment take Bosch starter motors as examples to explain the installation methods and precautions for starter motor rotors. Relevant content can be found in courseware such as "Structure and Repair of Automotive Electrical Equipment". Professional Automotive Repair Forums: Professional automotive repair forums such as Xcar and TDI Club Forum have many maintenance personnel and car owners sharing experiences and precautions regarding the installation of Bosch starter motor rotors. For example, there is a post on the TDI Club Forum that details the rebuilding process of the Bosch 012 series starter motors, including some key points during rotor installation.