starter 185086670、185086680、1000214983 1000299581 428000-2540 428000-3570 LRS03810 LRS3810 1000214983 1000299581 FOR Perkins

The installation steps for the Perkins 12V starter are as follows: •  Install the studs (if necessary): Install the studs into the flywheel housing. For M10 studs, the tightening torque is 18N・m (159lbin); for M12 studs, the tightening torque is 25N・m (221lbin).  •  Install the gasket (if necessary): Install the new gasket onto the studs of the flywheel housing.  •  Place the starter: Position the electric starting motor onto the studs of the flywheel housing.Place the starter motor: Mount the electric starter motor onto the studs of the flywheel housing.  •  Tighten the nuts or bolts: Install the nuts or bolts. The tightening torque for M10 nuts is 44N・m (33lbft), and for M12 nuts, it is 78N・m (58lbft).  •  Connect the wire harness assembly: Connect the wire harness assembly to the electric starter motor and the solenoid valve.  •  Turn on the power: Turn the battery disconnect switch to the on position.

Precautions for Installing Perkins 12V Starter Safety Protection •  Before installation, the negative battery cable must be disconnected to prevent short circuits during wiring, which may damage the starter solenoid or the vehicle's electrical system.  •  Wear insulating gloves and protective glasses during operation to avoid electric sparks caused by tools touching the starter terminals, and to prevent injuries from falling parts.Component Inspection and Matching •  Before installation, confirm that the starter model is compatible with the Perkins engine (the engine displacement and flywheel ring gear specifications need to be matched). Check that components such as the starter gear, bearings, and solenoid valve are free from wear and jamming, and that the gasket is intact and undamaged.  •  Clean the oil stains, rust, and residual sealant from the mounting surface of the flywheel housing to ensure the mounting surface is flat, avoiding oil leakage or abnormal noise caused by poor sealing.Installation Specifications •  A torque wrench must be used when tightening bolts/nuts, and operations must be carried out strictly in accordance with the specified torque (44N・m for M10, 78N・m for M12). Excessively low torque may cause loosening when the starter is working, while excessively high torque may damage the threads or the housing.  •  The installation position of the starter must be accurate to ensure a reasonable meshing gap between the gear and the flywheel ring gear (the normal gap is 0.5-1.5mm). If the meshing is too tight or too loose, it will cause gear wear and difficulty in starting.  •  Distinguish between positive and negative poles when connecting wire harnesses to avoid reverse connection (usually the red wire harness is connected to the positive pole and the black one to the negative pole). The terminals must be tightened to prevent heating or poor contact during starting due to virtual connection.Subsequent Testing and Maintenance •  After installation, connect the negative terminal of the battery, start the engine to test the working status of the starter, observe for abnormal noise, gear jamming, or weak starting, and check if the wiring harness terminals are overheating.  •  Recheck the tightness of the starter fixing bolts after short-term use, regularly clean dust and oil stains from the starter surface, inspect the wiring harness for aging, and promptly replace damaged components.   Special Scenario Requirements •  If installed in a humid environment or outdoors, proper waterproofing measures must be taken to prevent rainwater from entering the starter and causing a short circuit.  •  When removing the old starter, mark the positions of the wiring harness to facilitate wiring of the new starter. If unsure about the wiring method, refer to the engine maintenance manual.

References：The "passage" you mentioned refers to the previous content about the installation precautions for the Perkins 12V starter, and its source is Hunan Enproway Mechanical Equipment Co., Ltd. On its website, the company published an article titled "Perkins Engine Electric Starter Motor - Disassembly and Installation Methods", which details the disassembly and installation steps of the Perkins engine electric starter motor, including installing studs, gaskets, starters, tightening nuts or bolts, connecting wire harness components, etc. It also mentions some precautions during the installation process. The URL of the article is http://www.enproway.com/newsdetail_337.html, and it was published at 15:34 on March 10, 2017.