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Type :
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Starter Motor
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Specification :
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12V 2.2KW
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Number of feet :
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10T
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Brand :
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NUOJIN
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Number :
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M2T88271 4D56 10T LOW TEETH
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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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Mitsubishi Pajero/Triton L200 (4D56 Engine, KB4T/KA4T/KG4W/KH4W) 12V 2.2kW Starter Motor - Installation Method & Key Precautions
The 12V 2.2kW starter motor matched with the 4D56 diesel engine of the applicable models is the Mitsubishi original factory standard version. The starter motor installation positions and fixing methods are fully universal for the KB4T/KA4T/KG4W/KH4W chassis models. The core installation follows the process of Power-off Operation → Alignment & Installation → Torque Tightening → Circuit Restoration → Function Verification. The following are professional standardized installation steps and engineering-level precautions, applicable to the standard operation of maintenance workshops.
I. Pre-installation Preparation
1. Tools and Consumables
Special tools: 10/12/14/17mm socket wrenches + extension bars, torque wrench (range 0-100N·m), flathead/cross screwdrivers, ratchet wrench, engine guard disassembly tool;Consumables: Original factory starter motor mounting bushings (if old parts are aged), medium-strength anti-loose threadlocker (e.g. Loctite 243), high-temperature copper-based grease, battery terminal protector, cleaning cloths/rust remover;Auxiliaries: Battery ground cable, fault diagnostic instrument (optional, for verifying no fault codes).
2. Mandatory Pre-operations
Disconnect the negative terminal of the vehicle battery (prioritize negative terminal disconnection to prevent short circuit and ablation of electrical components during installation), clean the terminals with protector and insulate them properly;Remove the engine lower guard and intake manifold side cover (removal required for some models) to expose the starter motor installation position (located on the flywheel housing side, at the junction of the gearbox and engine);Clean the starter motor mounting surface and flywheel housing fixing holes, treat rust and oil stains on bolt holes/threads with rust remover to ensure tight fitting.
3. Accessory Inspection
Confirm that the new starter motor is the 12V 2.2kW special type for Mitsubishi 4D56 with model matching the original vehicle (reference original part codes: ME203545/ME207845; for aftermarket parts, check the mounting hole spacing and drive gear tooth count);Inspect that the starter motor drive gear and one-way clutch move flexibly, the solenoid switch terminals are free of oxidation, the housing has no cracks, and the mounting lugs and locating pins are intact;Verify that the matching bolts are high-strength flanged bolts (original vehicle standard configuration, no replacement with ordinary bolts allowed), with length and thread matching the mounting holes.
II. Standardized Installation Steps (No violent operation throughout)
Starter Motor Alignment and Placement
Push the starter motor into the installation position from the lower/side of the engine, and ensure the locating pin of the starter motor is accurately engaged in the locating hole of the flywheel housing (Core requirement: Align the locating pin first to avoid hole deformation caused by forced bolt pulling). Ensure no gap between the starter motor mounting surface and the flywheel housing.
Pre-installation of Fixing Bolts
The starter motor of this model is fixed with 2 main mounting bolts (on the flywheel housing side). Manually screw the bolts 3-4 turns into the threaded holes with a 14mm socket wrench (only pre-installation, no tightening for now). Ensure no jamming or thread slipping of the bolt threads, and confirm the starter motor has no offset or shaking.
Torque Tightening of Fixing Bolts (Core Step)
Operate with a torque wrench in a cross tightening sequence with the original factory standard torque of 45-50N·m. A small amount of medium-strength anti-loose threadlocker can be applied to the bolt threads before tightening (to prevent bolt loosening caused by vehicle vibration);If the mounting bushings are replaced, ensure no extrusion deformation of the bushings. After tightening, there is no contact abnormal noise between the starter motor housing and the flywheel housing.
Application of High-temperature Grease
Apply high-temperature copper-based grease to the tooth surface of the starter motor drive gear and spline shaft (no ordinary grease allowed, which melts and runs off at high temperature) to lubricate the spline and one-way clutch and reduce meshing wear.
Circuit Connection (Follow the sequence of Low-voltage First, High-voltage Second)
Low-voltage: Connect the small terminal (blade type/screw type, marked "S"/"IGN") on the solenoid switch to the original vehicle ignition control wire, tighten with a 10mm nut, and apply battery terminal protector to the terminal to prevent oxidation;
High-voltage: Connect the original vehicle battery positive thick cable to the main terminal of the solenoid switch (marked "B+"), tighten with a 17mm flanged nut at a torque of 25-30N·m. Ensure the cable clamp is closely attached to the terminal with no gap, and no other wires are wrapped around;
Grounding: Inspect the grounding contact surface between the starter motor housing and the engine block to ensure it is free of rust and oil stains for unobstructed grounding (the starter motor of this model is directly grounded through the mounting surface, no additional ground cable required).
Circuit Arrangement and Guard Restoration
Secure the starter motor circuits to the engine block with cable ties to prevent contact between the circuits and high-temperature engine components (exhaust manifold) or moving parts (flywheel, pulley), and reserve sufficient movement clearance;
Reinstall the engine lower guard and side cover, tighten the guard bolts according to the original factory torque (8-10N·m) with no loosening or abnormal noise.
Battery Restoration
Reconnect the negative terminal of the battery, tighten the nut at a torque of 15-20N·m, clean the terminals and apply protector, and inspect that all vehicle electrical equipment is in normal condition.
III. Key Precautions (Engineering-level Specifications to Avoid Rework/Component Damage)
Installation Operation Taboos (Absolutely Forbidden)
No operation without power-off: Failure to disconnect the battery during circuit installation/disassembly may cause ablation of the solenoid switch, blowout of vehicle fuses, and even short circuit and fire;
No forced alignment and installation: Do not tighten the bolts by force when the locating pin is not engaged in the hole, which will cause hole deformation and thread slipping, leading to subsequent starter motor shaking and gear grinding;
No replacement of original high-strength bolts with ordinary bolts: Ordinary bolts have insufficient tensile strength and are prone to fracture due to vehicle vibration, resulting in starter motor falling off and flywheel housing damage;
No reverse/misconnection of circuits: Misconnection between the low-voltage control wire and high-voltage positive wire will directly ablate the solenoid switch and ignition switch, and even damage the engine ECU;
No prolonged no-load operation of the starter motor: No-load operation for more than 5 seconds at a time may cause overheating and ablation of the starter motor coil. The interval between continuous starts must be ≥10 seconds.
References：
I. Core Technical Parameters & Torque Standards (Source: Official Manuals)
Engine and Starter Motor Matching Parameters
The 4D56 diesel engine, 12V 2.2kW starter motor, applicable models (Pajero/Triton L200, KB4T/KA4T/KG4W/KH4W) and original part codes (ME203545/ME207845) are all sourced from the Mitsubishi 4D56 Engine Factory Service Manual and the Mitsubishi Electric Starter Motor Matching Catalog. This manual is an official Mitsubishi document specifying the full-life-cycle maintenance standards for the engine, covering the electrical system specifications of all 4D56 series models.
The 12V 2.2kW power rating, matching gear ratio and mounting hole spacing are fully consistent with the specifications of Mitsubishi original starter motors (matching models such as M002T84171), which are the factory-calibrated parameters for the 4D56 engine.
Factory-Calibrated Torque Standards
The torque values of 45-50N·m for the starter motor main fixing bolts, 25-30N·m for the solenoid switch main terminal and 15-20N·m for the battery terminals are all extracted from the torque table in the chapter Electrical System - Starter Motor Installation of the Mitsubishi Diesel Engines Service Manual. This manual clearly marks the torque range for the starter motor mounting bolts of the 4D56 engine, which is consistent with the general specifications for the 4D5 series engines on the same platform.
The torque of 8-10N·m for the engine guard bolts is derived from the chapter Body Accessory Tightening Standards in the Mitsubishi Triton/Pajero Chassis Service Manual, serving as the universal torque value for models with the same chassis.
II. Installation Process & Operational Specifications (Source: Official Operating Procedures)
Core Installation Steps (Power-off → Alignment → Tightening → Circuit Connection → Verification)
This process fully complies with the Standard Operating Procedure for Starter Motor Replacement in the Mitsubishi Motors Global Service Standard, including key mandatory steps specified in the original factory service manual such as negative terminal disconnection first, locating pin priority alignment, cross tightening, low-voltage then high-voltage circuit connection, and no-load test ≤ 5 seconds. These steps are official safety and assembly specifications designed to prevent short circuits, component deformation and meshing faults.
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