|
Type :
|
Engine starter
|
|
Specification :
|
24V 7.5KW
|
|
Number of feet :
|
12T
|
|
Brand :
|
nuojin
|
|
Number :
|
M009T80871 10PC1
|
|
Quality :
|
Regeneration
|
|
Delivery time :
|
10DAY
|
The Isuzu 24V 7.5KW starter motor is mostly compatible with its diesel engine models. Its installation must follow the principles of power-off protection, accurate alignment, and standardized wiring. The specific steps are organized based on the installation characteristics of the starter motor for this type of vehicle. Before operation, it is recommended to prepare tools such as wrenches, lithium-based grease, and brushes:
Park the vehicle on a flat surface and secure it with the handbrake.
Wear gloves and goggles to avoid oil contamination or injury from component collisions during operation.
Prepare suitable tools including socket wrenches, screwdrivers, and brushes.
Confirm that the new starter motor model is compatible, with no external damage and complete components. Meanwhile, check whether the starter motor has a short-circuit problem.
Use a brush to clean oil stains, rust, and anti-rust oil on the mounting surface of the engine corresponding to the starter motor. Ensure good contact of the mounting surface to prevent unstable fixation.
Disconnect the negative cable of the battery to prevent short circuits in the circuit or accidental startup during installation, which could damage the starter motor and vehicle electronic components.
Apply lithium-based grease to the spiral splines, clutch connection sliding surfaces, armature shaft, and bearing parts of the starter motor to ensure smooth operation and extend the service life of the components.
Align the starter motor with the mounting position at the junction of the engine and transmission, ensuring that the drive gear of the starter motor can properly engage with the engine flywheel ring gear.
After aligning the mounting holes, initially fix the starter motor with fixing bolts, then tighten the bolts (usually 2-3 fixing bolts) to a torque of approximately 80 N·m. Avoid excessive torque (which may damage the mounting seat) or insufficient torque (which may cause vibration during operation).
This power-rated starter motor has a relatively large current. The cross-sectional area of the copper wire connecting to the battery should be no less than 25mm², and the cross-sectional area of the button wire should be no less than 4mm². Additionally, keep the wires as short as possible.
First connect the power wire to the solenoid switch of the starter motor, then connect other wires such as the control wire. Tighten each terminal to prevent loosening and overheating.
Pay attention to distinguishing the positive and negative poles during wiring; do not reverse the connection.
Reconnect the negative cable of the battery, and check that the starter motor is firmly fixed, the wires are free from tangling and loosening, and the surrounding components are not crushed.
When starting the vehicle, observe whether the drive gear of the starter motor can pop out and retract smoothly, and operate without abnormal noise.
The duration of each startup should not exceed 5 seconds. If the first startup fails, wait for 2 minutes before trying again. If the vehicle fails to start after three consecutive attempts, it is necessary to check for faults in the wiring connections or the starter motor itself.
Following the precautions below can prevent damage to the starter motor, short circuits, or safety accidents caused by incorrect installation, while ensuring the long-term stable operation of the starter motor. These precautions must be implemented simultaneously with the installation steps:
Throughout the entire installation process, the negative cable of the battery must be disconnected first (some vehicle models require disconnecting the positive cable at the same time). Live operation is strictly prohibited.
If temporary circuit testing is needed during installation, ensure that no metal tools come into contact with the starter motor terminals to prevent short circuits that could burn out the solenoid switch or battery.
Wear anti-slip gloves (to avoid slipping due to oil contamination) and goggles (to prevent metal debris or grease from splashing into the eyes).
Keep the operation area away from open flames (short circuits in diesel vehicle circuits may generate sparks, so flammable areas near the fuel tank must be avoided).
The vehicle must be parked on a level surface. Pull the handbrake tightly and place wheel chocks under the wheels to prevent the vehicle from rolling during installation.
If the vehicle needs to be lifted, it must be fixed with a professional lift. Using a jack alone for support during operation is strictly prohibited.
Confirm that the new starter motor model (e.g., Isuzu original part number) is compatible with the vehicle engine. Focus on checking whether the power (7.5KW), voltage (24V), and number of teeth on the drive gear match those of the flywheel ring gear. This avoids abnormal gear meshing noise or failure to start due to incorrect installation.
Use a brush to thoroughly clean oil stains, rust, and residual old sealant from the engine mounting seat.
If the mounting surface is deformed (e.g., misaligned bolt holes, sunken flat surface), it must be repaired before installation. Otherwise, the starter motor will be "subjected to uneven force" after being fixed, causing severe vibration during operation and damaging the armature bearing.
Before installation, check whether the solenoid switch, drive gear, and armature shaft of the new starter motor are flexible:
If component damage is found (e.g., cracked coil housing, deformed terminals), installation is prohibited.
Fixed bolts must be of original factory specifications (usually M10-M12 high-strength bolts). Using bolts with inconsistent specifications is prohibited (e.g., bolts that are too short, leading to unstable fixation; bolts with too small a diameter, leading to thread stripping).
When tightening, tighten the bolts in a diagonal sequence in stages. The final torque must be strictly controlled between 75-85 N·m (refer to Isuzu diesel vehicle maintenance standards). Insufficient torque will cause the starter motor to shift during operation, while excessive torque may break the bolts or damage the threads of the mounting seat.
Distinguish between the power wire (thick wire, connected to the positive terminal of the battery) and the control wire (thin wire, connected to the ignition switch). Reversing the connection is strictly prohibited — reverse connection will cause the solenoid switch to pull in in the wrong direction, burning out the coil or causing the drive gear to reverse and jam.
Terminals must be fixed with "double nuts" or "lock washers" to ensure no looseness (when large current passes through, loose terminals will generate high temperatures, burning out the terminal posts or causing fires).
The insulation layer of the wires must be kept away from high-temperature components (e.g., exhaust pipes) to prevent the insulation layer from melting and causing a short circuit due to long-term heating.
References：
The precautions for installing the Isuzu 24V 7.5KW starter motor you previously viewed do not come from a single specific official document or authoritative source. Instead, they are integrated based on general automotive starter installation specifications, starter accessory instructions for relevant Isuzu engine models, and industry maintenance experience. The reference sources for the core information can be categorized into the following types, detailed as follows:
Details such as the requirement that the cross-sectional area of the copper wire for the battery connection should be no less than 25mm², the cross-sectional area of the button wire no less than 4mm² during wiring, the maximum 5-second duration for each startup, and the 2-minute interval before retrying after a failed startup are highly consistent with the accessory usage requirements for the Isuzu 4JB1 starter motor published on
Liebiao.com. These are targeted technical key points adapted to starters of this vehicle type.
The general disassembly and assembly precautions for starters released on platforms such as Autohome and PCauto serve as important references. For example, content including disconnecting the negative terminal of the battery before installation, strictly prohibiting rough hammering of components, and using a rubber mallet for auxiliary installation aligns with the core requirements of these platforms—such as avoiding damage to the armature and coils during starter disassembly and assembly, and ensuring proper circuit protection. Meanwhile, specifications like torque control and grease application also comply with the industry's general standards for automotive starter installation.
Related Articles
Discover what vehicles use auto starter systems and how Auto Starter car technology improves safety, convenience, and performance. Learn about manufacturer production, factory supply, and modern applications for cars, trucks, and commercial vehicles.....
Looking for a complete Auto Starter guide? This article explains how auto starters work, types, symptoms, maintenance tips, and how manufacturers and factories supply high-quality starters for global production and bulk orders.....
Learn everything about starter parts, how they work, signs of failure, maintenance tips, and how a professional manufacturer with factory production ensures stable, high-quality starter components for global vehicle owners.....
Explore the real-world Auto Starter disadvantages in industrial and automotive production. Learn how auto starter systems affect reliability, cost, maintenance, and factory manufacturing efficiency.....
Discover what a starter solenoid does in a vehicle, how it works with the starter motor, signs of failure, and why quality starter solenoid production from a professional manufacturer and factory matters for reliable performance.....
Explore common Boat Starter types and learn which marine engines they fit best. As a professional Boat Starter manufacturer with factory production and bulk supply capability, we provide reliable starting solutions for outboard, inboard, and diesel marine engin....
