Car starter motor T837010021 T73701009 T837010016 is suitable for Lovol

Pre-installation Preparation

• Tool and Accessory Preparation: Prepare tools including socket wrenches, torque wrenches, screwdrivers, and rags. Confirm that the model of the new 12V starter matches the corresponding Lovol vehicle model. Check that the starter housing is free of damage and the terminal blocks are free of oxidation and rust. Meanwhile, prepare compatible fixing bolts, gaskets, and other accessories—original specifications are recommended.

• Safety Protection and Power Off: Park the vehicle on a flat road, pull the handbrake tightly, turn off the engine, and pull out the key. Be sure to disconnect the negative connection wire of the car battery to avoid short circuits during installation that may damage the starter or vehicle electronic components.

• Clean the Installation Area: If the old starter was just removed, wipe the installation position at the junction of the engine and gearbox (where most Lovol Automobile starters are installed) with a rag. Remove dust, oil, and debris to ensure the mounting surface is flat and clean, reducing vibration and malfunctions caused by poor contact when the starter works later.

Core Installation Operations

• Precise Fixation of the Starter: Place the new starter stably on the mounting bracket and align it with the bolt holes on the bracket. Initially fix it with M10 bolts (the specific bolt specification shall be subject to the actual vehicle condition) without fully tightening—reserve fine-tuning space and reinforce after confirming the position is correct. Finally, tighten the bolts with a torque wrench to 45±5N・m to avoid starter loosening or mounting seat deformation due to excessive or insufficient torque.

• Standardized Wiring Connection: Distinguish interfaces such as the power wire (B+ terminal) and control wire (S terminal) by referring to the wiring position of the old starter. Insert each wire harness connector into the corresponding terminal of the starter and lock it tightly. Keep the B+ terminal wire harness as vertical as possible, and control the installation torque of its nut to 12±2N・m to prevent starter interface breakage caused by excessive torque. If the terminal has oxidation, gently polish off the oxide layer with fine sandpaper; apply a small amount of conductive paste if necessary. Strictly prohibit reverse connection of positive and negative poles to avoid burning the starter coil. In addition, pay attention to the routing of the S terminal wire harness to avoid interference with the gearbox counterweight—bind the small wire to the main wire with tape 30mm away from the wire harness node.

Post-installation Inspection and Testing

• Restore the Circuit and Recheck: Reconnect the negative pole of the battery, and recheck whether the fixing bolts of the starter are loose, and whether all wire harness connectors are firmly connected without incorrect connection. Secure excess wire harnesses to the engine compartment bracket with cable ties, away from high-temperature areas.

• Start-up Test: Insert the key and turn it to the start position—single start time shall not exceed 5 seconds. If start-up fails, wait 10-15 seconds before retrying. Under normal circumstances, the starter should drive the engine to run smoothly without abnormal noise, and the starter should return smoothly after the engine starts. If there is weak start, no response, or abnormal noise, turn off the power immediately and check for loose bolts, poor wire contact, or abnormal meshing of the starter gear.

Pre-installation Safety and Component Preparation

1. Strictly disconnect power to avoid risks

   Before installation, be sure to turn off the ignition switch and pull out the key, and disconnect the negative terminal of the vehicle battery first. This measure can prevent short circuits caused by accidental power-on during installation, avoid burning out core electronic components such as the starter solenoid switch and the vehicle's ECU, and eliminate the risk of electric shock at the same time.

2. Verify component specification matching

   The model of the new 12V starter motor must be fully consistent with the original specifications of the Lovol vehicle. In addition to meeting the 12V voltage standard, its power, installation dimensions and connection interfaces should also match those of the original vehicle. This avoids installation failures due to mismatched specifications, as well as problems such as weak starting or damage to the engine flywheel ring gear after installation.

3. Clean and inspect components

   If the old starter motor has just been removed, wipe the mounting surface on the engine with a clean cloth to remove oil stains, rust and dust. This ensures the mounting surface is flat and fits closely, reducing vibrations when the starter motor operates later. Meanwhile, check that the new starter motor has no external damage, no loose internal parts, and no oxidation or rust on its terminals.

Standardized Operations During Installation

1. Tighten bolts in accordance with regulations

   After aligning the starter motor with the mounting holes, tighten the bolts symmetrically and evenly to the specified torque. Avoid fixing one bolt first before tightening the others, as this may cause deviation of the installation center. Do not use non-standard bolts. After tightening, check that the starter motor has no looseness. Excessively loose bolts can easily lead to vibration during operation, while over-tightening may damage the mounting bracket or bolt threads.

2. Ensure accurate and firm wiring

   When connecting wires, refer to the wiring marks on the old starter motor to distinguish between the power wire, control wire and other circuits, and avoid reversing the positive and negative poles. The nuts on the solenoid switch terminals should be tightened to the corresponding torque, generally ranging from 14.7 to 17.7 N·m. If there is an oxide layer on the terminals, gently polish it off with fine sandpaper and apply a small amount of conductive paste if necessary. Secure excess wire harnesses with cable ties and keep them away from high-temperature areas of the engine to prevent wire wear and short circuits.

3. Prohibit rough handling of components

   Do not strike the starter motor housing or internal parts with tools such as hammers or wrenches throughout the installation process. Components such as the starter motor's end cover and gears are relatively brittle. Striking can easily cause housing deformation and gear damage, affecting the meshing between the starter motor and the engine flywheel. At the same time, avoid scratching the insulation layer of surrounding wire harnesses with tools to prevent interference with sensor signals.

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References：

Automotive Maintenance Q&A and Encyclopedia Platforms

• The Maintenance Q&A Section on Autohome includes universal precautions for starter installation, such as disconnecting the battery’s negative terminal to prevent short circuits, tightening bolts to the specified torque, and prohibiting striking the starter. It also mentions bolt torque standards for some starter installations. These specifications are equally applicable to the installation of the 12V starter for Lovol Automobiles.

• The Automotive Encyclopedia Section on PCauto summarizes processes such as model verification before starter installation, wiring requirements during installation, and working status testing after installation. It serves as a universal step-by-step guide for referencing the installation of Lovol Automobile starters.

Universal Automotive Maintenance Technical Documents

Third-Party Mechanical Component Installation Manuals