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Type :
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starter
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Specification :
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12V 2KW
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Number of feet :
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11T
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Brand :
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nuojin
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Number :
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228000-2970
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Quality :
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Remanufacture
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Delivery time :
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10 day
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Prepare socket wrenches, torque wrenches, Phillips screwdrivers, and other tools. Meanwhile, wear insulating gloves and safety goggles to avoid electric shock or scratches from parts during installation.
Confirm that the new starter is rated at 12V 2KW and compatible with the tractor model (e.g., New Holland compact tractors such as TC35DA and TC40 are compatible with this specification). Subsequently, inspect the starter for no cracks on the housing, no wear on the gear, good contact between the brushes and commutator, and normal response of the solenoid switch.
Disconnect the negative cable of the tractor's battery to prevent short circuits or accidental startup during installation, ensuring operational safety.
First, mark the wiring positions and bolt specifications of the old starter to avoid wiring confusion when installing the new unit.
Use a socket wrench to remove the bolts securing the old starter.
Disconnect the electrical connectors such as the power cable and control cable from the starter.
Finally, remove the old starter and clean oil, dust, and rust from the mounting surface to ensure it is flat and clean.
Align the new starter with the mounting holes at the junction of the engine and transmission. Adjust the position to ensure the starter gear meshes smoothly with the flywheel (avoid tooth jamming). Insert the fixing bolts and tighten them to a torque of 35-40N・m using a torque wrench. Apply moderate force to prevent vibration during operation (from loose bolts) or damage to the mounting holes/starter housing (from over-tightening).
First, connect the power cable from the positive terminal of the battery to the main terminal of the starter, and tighten the nut to approximately 10N・m.
Then, connect the tractor's starter control cable to the corresponding terminal of the starter solenoid switch. Ensure the connectors are free of oxidation and securely fastened.
Note: Do not reverse the positive and negative connections. Keep the circuits away from high-temperature components of the engine.
Do not strike or hammer components forcefully during installation. Use pulling/pressing tools for tight-fitting parts if necessary.
If you are unsure about any operation, refer to the service manual for the specific tractor model or consult professional agricultural machinery maintenance personnel.
Mandatory Power Disconnection Rules:Disconnect the negative battery cable throughout the entire installation process (Removal sequence: Negative terminal first, then positive terminal; Reinstallation sequence: Positive terminal first, then negative terminal). This prevents short circuits, sparks caused by tools touching the starter terminals, or personal injury from accidental startup.
Insulation and Protective Equipment:Must wear insulating gloves and safety goggles. Do not touch terminals or metal conductive parts with bare hands. If the installation environment has oil stains, wear non-slip shoes to avoid slipping and collision.
Keep Away from High-Temperature and Rotating Parts:Ensure the engine is cool during installation (to prevent burns from high-temperature components) and keep a safe distance from rotating parts such as the flywheel and belts. Confirm no tools or debris remain nearby before testing startup.
Prohibited Illegal Operations:Strictly forbid short-circuiting starter terminals with metal tools to test startup. Do not strike or hammer the starter housing, gears, or mounting holes forcefully, as this may damage the solenoid switch, gear tooth surfaces, or internal armature components.
Precise Specification Matching:Verify that the starter’s voltage (12V) and power (2KW) match the tractor’s original factory parameters and are compatible with specific models (e.g., New Holland compact tractors like TC35DA, TC40, Boomer 40). Incompatible power ratings may cause weak startup or circuit burnout.
Pre-installation Component Inspection:
Check that the starter gear rotates smoothly, with no chipping, missing teeth, or excessive wear (tooth tip clearance must meet the 0.3-0.5mm standard). If the gear jams, disassemble and inspect it first—do not force installation.
Confirm good contact between the brushes and commutator (no excessive wear or oxidation), smooth engagement of the solenoid switch, no cracks on the housing, and no oxidation or rust on the terminals.
Inspect the flywheel ring gear for intact tooth surfaces. If the ring gear is severely worn (flattened tooth tips or broken teeth), replace it simultaneously; otherwise, it may cause gear meshing noise or failure to start.
Bolt Tightening Specifications:
Use original-specification fixing bolts (typically M8-M10 high-strength bolts). Do not substitute non-standard bolts. Tighten bolts to a strict torque of 35-40N・m (refer to New Holland agricultural machinery maintenance standards). Loose bolts cause vibration and noise; over-tightening may strip mounting hole threads or crack the starter housing.
Ensure lock washers (spring washers, lock nuts) are properly installed to prevent bolt loosening due to tractor vibration during operation.
Gear Mesh Clearance Adjustment:Manually rotate the starter gear during installation to confirm smooth meshing with the flywheel ring gear (no jamming or tooth collision). If meshing is difficult, slightly adjust the starter’s mounting position or check for flywheel ring gear misalignment. Do not force bolt tightening to pull gears into mesh.
Wiring Connection Standards:
Clean terminal oxidation (lightly sand with fine sandpaper) before wiring to ensure good contact. Connect the power cable (thick wire) to the main terminal and the control cable (thin wire) to the corresponding solenoid switch terminal (refer to old component wiring marks or the service manual—reverse connection is prohibited).
Tighten wiring nuts to 8-10N・m. Loose connections cause excessive contact resistance, overheating, and ablation; over-tightening damages terminals.
Route wires away from high-temperature components (e.g., engine exhaust pipes, cylinder blocks) with a minimum spacing of ≥5cm. Secure wires neatly with cable ties to prevent abrasion, damage, or short circuits during tractor operation.
Startup Test Procedure:
The initial startup test should not exceed 5 seconds. If startup fails, wait 30 seconds before retrying (to avoid starter overheating and burnout). Stop and troubleshoot after 3 consecutive failures—do not repeatedly start for extended periods.
During testing: Ensure the starter operates without gear grinding noise, solenoid switch "clicking" abnormalities, or smoke/overheating. The engine should start smoothly; immediately disconnect power for inspection if abnormalities occur.
Emergency Handling of Common Faults:
Gear meshing noise: Inspect for ring gear wear, starter misalignment, or gear jamming. Readjust the mounting position or replace worn components.
Weak startup: Check battery voltage (≥12.4V), poor terminal contact, or worn starter brushes. Recharge the battery, re-tighten connections, or inspect brushes.
No response (solenoid switch inoperative): Check control cable connections, ignition switch functionality, or internal starter coil burnout. Troubleshoot wiring or replace the starter.
- References：
Official service manuals for Ford New Holland tractors—such as the New Holland 1725&1925 Tractor Service Manual on EPCATALOGS and manuals for models like the Ford New Holland 3230 and 3430 on relevant platforms—all include specifications, disassembly/assembly procedures, and testing methods for starters in the electrical system. For example, the manuals explicitly state that the starter is a core component of the electrical system; its removal and installation must align with the mounting position at the junction of the engine and transmission, and the meshing status between the gear and flywheel must be inspected. These requirements serve as the core reference for the starter mounting steps.
Standardized courseware on starter disassembly, assembly, and maintenance from Original Power Documentation, as well as general starter installation guides published by and Pacific Auto Encyclopedia, specify basic procedures such as power disconnection before installation, torque control for bolt tightening during installation, and startup performance testing after installation. Safety and process requirements—such as disconnecting the negative battery terminal first during disassembly/assembly and controlling bolt tightening force—are core contents of these general specifications, and also serve as important references for the safety operation and installation process precautions in the response.
Multiple agricultural machinery maintenance videos on platforms like Douyin document practical details of starter installation for diesel agricultural machinery, including cleaning oil stains from the mounting surface, adjusting gear meshing clearance, and organizing wires to avoid contact with high-temperature components. For instance, some videos mention the need to prevent gear tooth collision during installation and to check for grinding noise during startup testing. These key practical points supplement the troubleshooting and detailed operation content in the response
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