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Type :
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starter
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Specification :
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24V 5.5KW
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Number of feet :
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13T
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Brand :
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NUOJIN
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Number :
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M003T95082
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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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The Mitsubishi 24V 5.5KW starter is mostly suitable for Mitsubishi heavy-duty diesel vehicles and other equipment. The core of installation lies in proper safety protection, accurate alignment and fixation, standardized wiring, and final functional testing. The specific steps are as follows:
First, turn off the equipment's ignition switch and disconnect the negative cable of the battery to avoid short circuits or accidental startup during installation. Prepare suitable tools such as a socket wrench, torque wrench, snap ring pliers, insulating gloves, and safety goggles. At the same time, prepare accessories like high-temperature grease, new gaskets, and snap rings.
Confirm that the starter model is compatible. Check that the starter housing has no cracks or corrosion, the brush wear is within the normal range, the commutator surface is clean and undamaged, and the solenoid switch engages properly. In addition, clean the oil, dust, and rust at the connection between the engine and the gearbox (the starter installation position) to ensure the installation surface is flat and clean.
Align the starter with the mounting bracket holes on the engine, and adjust the angle so that the starter's drive gear is aligned with the flywheel ring gear. This ensures smooth meshing during subsequent operation and prevents gear jamming.
Insert the fixing bolts, hand-tighten them until they fit, then use a torque wrench to tighten them to the torque specified in the equipment manual (generally, the torque for heavy-duty vehicle starter bolts is approximately 37N·m; refer to the corresponding Mitsubishi model parameters for the exact value). Apply force evenly diagonally to prevent the starter from being installed at an angle.
Evenly apply high-temperature grease to the starter's planetary gears, armature shaft, return spring, and bearings. This reduces operational wear and extends the service life of the components.
First, connect the thin wire plug on the solenoid switch and ensure the plug is fully clamped. Then, connect the thick cable corresponding to the positive terminal of the battery to the main terminal of the starter and fasten it with a nut. Ensure there is no oxidation at the terminal; if necessary, lightly polish and clean it with sandpaper to avoid poor contact. Note that the wiring arrangement should avoid high-temperature and rotating components to prevent wear and short circuits.
After confirming that the wiring connections are correct, reconnect the negative cable of the battery. Then, gently turn the ignition switch and observe whether the starter's drive gear can pop out quickly and mesh smoothly with the flywheel ring gear. At the same time, pay attention to any abnormal noise, vibration, or jamming.
Start the engine and check whether the starter can stably drive the engine to run, and whether the drive gear can retract in a timely manner after startup. If problems such as weak startup, failure of the gear to retract, or abnormal noise occur, disconnect the power immediately and check the bolt tightness, wiring connections, and gear meshing status.
Throughout the installation process, the negative cable of the battery must be disconnected first. It is strictly prohibited to connect the starter circuit or adjust components in a live state, so as to prevent sparks caused by short circuits, and avoid burning the solenoid switch or battery.
Wear insulating gloves and safety goggles to prevent oil stains from coming into contact with the skin during installation, and avoid personal injury caused by falling metal debris or tools.
It is strictly prohibited to strike the starter housing, drive gear or solenoid switch with hard objects such as hammers and crowbars. This prevents component deformation (e.g., damage to the gear tooth surface, cracks on the housing), which may lead to meshing failures or damage to the internal armature.
If the starter shows abnormalities such as "gear jamming", "abnormal noise" or "smoke" during testing, disconnect the power immediately. Forced repeated starting is prohibited to avoid overheating and burning of the armature or tooth damage to the flywheel ring gear.
Confirm the starter model (which must match the engine power and the number of teeth of the flywheel ring gear). During installation, original or new gaskets, fixing bolts and snap rings of the same specification must be used. It is forbidden to replace bolts with those of different specifications (e.g., replacing fine-thread bolts with coarse-thread ones) to prevent bolt thread stripping or inclined installation of the starter.
During installation, repeatedly adjust the angle of the starter to ensure that the tooth surfaces of the drive gear and the flywheel ring gear are completely aligned (the flywheel can be manually rotated to assist in alignment). If the gears are misaligned, it will cause "tooth striking" during startup, and in severe cases, damage the tooth surfaces of both parties. After installation, manually push the drive gear to check whether it moves smoothly without jamming.
First connect the thin wire (solenoid switch control circuit), then connect the thick cable (battery positive main circuit). Use sandpaper to clean the oxide layer on the terminals to ensure tight contact. When tightening the nuts, apply moderate torque (generally 8-12N·m) to avoid breaking the terminals or cracking the insulation layer.
The wiring must be kept away from high-temperature (>80℃) or rotating components such as the engine exhaust pipe and fan, and fixed with cable ties to prevent short circuits caused by long-term wear.
A torque wrench must be used to tighten the starter fixing bolts to the torque specified in the corresponding Mitsubishi model manual (usually 35-40N·m for heavy-duty vehicles; refer to the engine maintenance manual for the exact value). Tighten the bolts diagonally and step by step (e.g., first tighten bolt No.1 to 50% of the torque, then bolt No.2, and finally tighten all bolts to the standard value). This prevents uneven stress and deformation of the starter housing, which may affect the gear meshing accuracy.
Apply high-temperature grease (with temperature resistance ≥150℃, such as lithium-based grease) only to the tooth surfaces of the starter's planetary gears, armature shaft bearings, and drive lever hinge points. It is strictly prohibited to apply grease to the commutator, brushes or the interior of the solenoid switch, so as to prevent poor brush contact or solenoid switch jamming caused by oil contamination.
References：
The previously provided installation precautions for the Mitsubishi 24V 5.5KW starter are not excerpted from the original exclusive manual of a specific Mitsubishi model. Instead, they are summarized and integrated based on general starter installation and maintenance knowledge, maintenance logic for Mitsubishi heavy-duty engines, and universal standards in the automotive maintenance field. The specific reference bases are as follows:
Core requirements such as disconnecting the negative battery cable before installation, prohibiting striking components with hard objects, and conducting no-load tests after starter disassembly and reassembly (for 24V starters, perform a 12V no-load test first, followed by a 24V no-load test) are universal for automotive starter installation. Similar statements can be found in starter disassembly and assembly popular science content on platforms such as Autohome and PCauto. For example, Autohome mentions that a running test must be conducted after starter assembly, and it is recommended to perform a 12V no-load test first for 24V starters—this aligns with the test requirements in the summarized content.
Precautions in the content, such as diagonal tightening of bolts, applying high-temperature grease to key parts, and routing wires away from high-temperature and rotating components, conform to the detailed universal standards for motor installation in the electrical engineering field. The motor installation key points published on the Electrical Engineering Learning Network emphasize requirements including flat installation surfaces, secure wire connections, and keeping away from heat sources—these are consistent with the installation logic of special-purpose motors like starters.
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