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surface of the O-ring at the upside of the injector where it connects with the fuel distributing pipe. Be careful not to let engine oil contaminate inside of the injector and the nozzle. l Place the injector in its bracket vertically along injector bracket, then fix it to the bracket with retaining clips. Note: By location mode, the remaining clips for injector fall into axial location remaining clip and ① axial and radial location remaining clip; misuse should be avoided. For installation of an axially located in ② jector, make sure that the bayonet at middle of the remaining clip is completely locked into the groove of the injector and the grooves at both sides of the remaining clip are completely locked into the outskirt flanging of the injector seat.
When instal ③ ling an injector that both axial and radial locations are required, use an axial and radial location remaining clip and place the locating piece of the injector and the locating pin of the injector seat respectively into the corresponding grooves on the location remaining clip. If the injector has two grooves, be careful not to place by mistake, refer to the installation site ④ of the original. l Installation of injector should be done by hand and knocking the injector with such tools as hammer etc. is prohibited. l When disassemble/reassemble the fuel injector, the O ring must be replaced. And pay attention to not damage the sealing surface of the injector. l Do not pull the support gasket of O-ring out of the injector. When installing, avoid damage to fuel inlet end, support ring, nozzle plate and electric connector of the injector. If damaged, use is prohibited. l After installation of injector, perform leakproofness detection for fuel distributing pipe assembly. It is acceptable only when no leakage exists. l The failure part must be disassembled by hand. Remove remaining clip of the injector first, and then pull out the injector from the injector seat. After disassembly, ensure cleanliness of the injector seat and avoid contamination. 9.5 Failure effects and judgment method lack of maintenance. l Maintenance precautions: (see installation attentions) (remove the joint) swift the digital multimeter on ohm shift, connect the meter pens to the two pins of injector. The rated resistance should be 11 - 16Ω¸ when it is 20 . ℃
Suggestion: regularly wash and analyze the injector using a special washer analyzer for injector. 10. Ignition Coil 10.1 Function of ignition coil: Primary and secondary circuits are integrated inside the ignition coil; when ECU controls on-off of current in the primary coil, a high voltage as high as thousands volts will be generated in the secondary coil, which will then generate spark through ignition cable and spark plug to ignite the mixed air in the cylinder. 10.2 Working principle Ignition coil ZS - K2 × 2 consists of two primary windings, two secondary windings, mandrel, and |