汽车二级维护

汽车二级维护 Basic operation rules for two stage maintenance of Xiali car 1. applicable models: Xiali TJ7100, TJ7130 / 7131, TJ7136U2000 sedan. 2. Xiali series car two maintenance cycle; 15 thousand km. 3. basic operation rules for two stage maintenance of Xiali series car. Schedule of basic operation for two stage maintenance of Xiali car Serial number Maintenance project Job content technical requirement One Engine oil and oil filter 1) replace the oil 2) replace the oil filter 3) check the oil pressure and alarm device 1) engine oil specifications; TJ376Q engines, HC - C engines are APISE, 8A - FE engines are APISH class, EC-II or SJ class, EC or ILSAC multi grade engine oil; lubricating oil viscosity grade (SAE standard) is selected according to environmental temperature 2) the oil filter should be injected with oil before installation. The assembly is well installed and sealed well 3) after the engine is preheated, there should be no oil seepage or oil leakage in the impact load 4) level requirements: cold car should be in the dipstick marked "L" and "F". 5) engine oil total: 3.5 L 6) engine oil pressure standard value: 8A - FE type engine, when idling > 49kPa, 3000r/min is 294 ~ 539kPa; HC - C type engine; idle speed is 196kPa; 3000r/min is 245 ~ 490kPa Two Air filter 1) clean the air cleaner housing 2) replace the air cleaner element 3) check the thermostat and the tightness of the intake system 1) air cleaner is clean, effective, well sealed and reliable 2) constant temperature intake valve works effectively without leakage of intake system 3) replace the air filter element every 30 thousand km Three Engine belt and pulley 1) inspect the belt and pulley appearance 2) check the belt deflection and tension 1) Belt should be no cracks and excessive wear, and no oil on the surface, replacement cycle: imported drive belt 100 thousand km, domestic transmission belt 40 thousand km 2) the transmission belt of the generator is under the action of 20N force, the deflection is new belt 7 ~ 9mm, old belt 11.5 ~ 13.5mm; after installing new belt, should run 5min, then test transmission belt tension force (conditional use special detector to test) 3) the pulley does not have obvious end face jumping, the wheel groove has no obvious abrasion, and the operation is no different 4) the timing belt shall not have cracks, excessive wear or damage, and the replacement cycle shall be 150 thousand km (8A - FE) 5) under the action of 20N force, the positive belt deflection is 5 to 6mm, and the timing belt pulley should be smooth and flexible, otherwise it should be replaced Schedule of basic operation of two stage maintenance for Xiali car (continued table two) Serial number Maintenance project Job content technical requirement Four Valve chamber cover, timing guard Check and fasten 1) the valve chamber cover and timing belt shield surface is clean, and the joint is well sealed 2) valve chamber cover, timing belt shield fixed bolt, fastening its tightening torque, HC - C type engine is 1.96 ~ 3.92N * m, 8A - FE type engine is 7.4N = m Five Valve train Check and adjust valve clearance Standard value of valve clearance: TJ376Q engine (hot) inlet and exhaust valve for 0.20mm; HC - C engine (hot) intake valve for 0.25mm soil 0.07mm, exhaust valve for 0.33mm soil 0.07mm 8A - FE engine (cold) intake valve is 0.18mm, exhaust valve is 0.25mm Six Fuel supply system 1) check the fuel line connections and seals 2) check the fuel tank cover and pad 3) replace the fuel filter 4) check the operation of the fuel pump 5) check the operating pressure of the fuel system 6) check the fuel cutting device 1) the fuel pipe has no aging and cracking, and the joint is free from breakage and leakage. The fastening is reliable 2) no deformation or damage to the fuel tank cover and pad, the valve is open properly 3) the fuel filter is reliable and well sealed 4) the fuel pump works just the same 5) 8A - FE fuel system operating pressure: 265 ~ 304kPa (without vacuum) 6) the fuel shut-off device is functioning properly Seven Carburetor and linkage (TJ376Q, HC - C engines) 1) clean the carburetor 2) check the carburetor linkage 3) adjust idle speed 4) detect exhaust emissions 1) all parts of the carburetor are clean, firmly connected, well sealed, and all the units are in good working order 2) the throttle valve and choke valve are opened and closed freely; the linkage mechanism is flexible and not loose; the washer and lock pin are complete and effective 3) idle smooth, idle speed standard value: TJ376Q type engine is 800r/min, soil 50r/min (fast idle speed is 1100r/min, soil 200r/min); HC - C type engine is 850r/min soil, 50r/min (fast idle speed is 1800r/min, soil 100/min) 4) emissions meet national emission standards Eight Fuel injection device (8A - FE engine) 1) check the injector operation 2) check the idle control valve (1SC) system and adjust the idle speed 3) check oxygen sensors and detect exhaust emissions 1) injector clean, no oil leakage, open normal, is no noise; every 60 thousand km cleaning, check injector 2) the fuel system is clean and unobstructed 3) in the thermal engine ignition accurately, remove the PCV and blocked, and adjust the idle speed at normal operating temperature; when the transmission is in neutral, A/C switch off when measuring ISC valve work with special tools, the engine speed is maintained at 1000 ~ 1500r/min, after 5S, should be able to return to the standard value of idle idle speed; 800r/min soil 50r/min 4) emissions meet national emission standards Schedule of basic operation of two stage maintenance for Xiali car (continued table three) Serial number Maintenance project Job content technical requirement Nine Throttle device 1) check throttle body and throttle valve 2) check throttle connecting rod 3) check the throttle position sensor 1) the throttle body shall be in good condition and clean. When the throttle is in the closed position, there shall be no gap between the throttle valve and the throttle lever 2) throttle connecting rod movement is stable 3) the throttle position sensor is inserted reliably Ten Fuel evaporation control system 1) check system hoses and fittings for looseness, deformation, damage and leakage 2) check the canister 3) check the one-way valve 4) check fuel tank, pressure vacuum release gland, vacuum valve and pressure valve 1) the tank is in good condition, reliable and well sealed 2) system hose no aging, crack damage, reliable connection, no leakage 3) the carbon canister can be split free, clean and smooth inside, and work properly 4) one-way valve and fuel tank pressure vacuum release gland smooth, work properly Eleven Crankcase ventilation (PCV) device Check and clean the PCV valve and vent hose 1) PCV valve clean, no plug, close tight, no jam phenomenon, sensitive and effective 2) the ventilation system is clean, unblocked, reliable and airtight Twelve twc 1) check the three way catalytic converter and connection status 2) check the effect of the three way catalytic converter and change it as soon as possible 1) the protective shell of the three way catalytic converter should be intact, and the connection is firm. There is no breakage and no blockage in the inner part, and the work is effective 2) the connecting conduits are well connected and free from leakage Thirteen Cooling system 1) check the radiator, expansion case and cover seal 2) check the cooling hoses and connections 3) check the cooling liquid crystal and liquid level 4) check the pump 5) check the thermostat working condition 6) check fan working condition 1) the radiator, expansion box and hose are free of deformation, breakage and leakage 2) the radiator cap and the expansion case cover are in good condition, and the pressure valve is not plugged and opened properly 3) the coolant does not deteriorate. The liquid level (when the engine is cold) should be between the tank 'LOW' and 'FULL' marking. The coolant is ethylene glycol and the content is 50% to 70%, replaced annually 4) water pump bearing rotation should be smooth, no noise, the water pump seal well, no leakage 5) temperature thermostat: TJ376Q engine start temperature is 88 ~ C soil is 1.5 ~ C, fully open when the temperature is 100 ~ C; HC - C engine start temperature is 82 C ~ 86 C, fully open when the temperature is 98 C; the 8AFE engine starting temperature is 80 ~ C ~ 84 degrees C, fully open when the temperature is 95 ~ C 6) fan smooth operation, abnormal sound, fan control switch is sensitive and accurate; the fan control temperature, TJ376Q engine on temperature is 98 ~ C, 2 ~ C, HC - C engine is 94 C, 8A - FE engine is 93 DEG C; TJ370Q engine shutdown temperature is 93 ~ C 2 degrees C, HC - C engine is 89 ~ C, 8A - FE engine is 83 ~ C Schedule of basic operation of two stage maintenance for Xiali car (continued table four) Serial number Maintenance project Job content technical requirement Fourteen Distributor, high voltage wire 1) clean the parts of the distributor 2) check whether the electrodes of the distributor are ablated and check the length of the center electrode 3) check the appearance of the distributor high voltage line and clean the terminals 4) check the condition of distributor shaft and lubricate 5) check and adjust the contact gap of the breaker 6) check whether the trigger rotor is bent or scraped and adjust the rotor air gap 7) check and adjust the ignition advance angle 1) the distributor has no oil pollution, the distributor cover is not damaged, no cracks, no leakage 2) there is no ablation of the electrodes, and the center electrode should be replaced if it is shorter than the standard length of 2mm 3) there is no defect in the terminals of high tension wires, and the resistance values meet the requirements 4) distributor shaft and shell clearance <0.1mm, no bending deformation and scratch phenomenon 5) breakpoint contact clearance: 0.4 to 0. 5mm 6) no deformation of rotor impeller, air gap standard: 0.2 ~ 0.4mm 7) ignition advance angle: TJ 376Q (800r/min soil 50r/min) type engine, HC - C (1000r/min) type engine is 5 degrees, 2 degrees; 8A - FE engine (1000r/min) is 10 degrees Fifteen Spark plug 1) clean, check or change spark plugs 2) adjust electrode clearance 1) electrode surface cleaning: electrode clearance, TJ376Q type engine is 0.7 ~ 0.8mm, HC - C type engine is 1 ~ 1.1mm, 8A - FC type engine is 08mm 2) spark plugs, threads and insulators shall not be damaged. Non permanent type spark plugs must be replaced, and permanent type must be replaced at 30 thousand km each Sixteen Intake and exhaust manifold and muffler Check and tighten intake and exhaust manifold and muffler 1) the inlet, exhaust manifold and muffler parts are intact and reliable. The rubber pad is complete, free of cracks and air leakage, and the performance of the muffler is good 2) intake manifold nut tightening torque: TJ376Q type engine is 9.8 ~ 15.68N = m, HC - C type engine is 29.4 ~ 44.1N / M 3) exhaust manifold nut tightening torque: TJ376Q type engine is 9.8 ~ 15.68N = m, I-IC - C type engine is 29.4 ~ 44.1 N = m Seventeen Engine support Check and fasten 1) the engine support pad is in good condition, and the support is free of deformation and cracks 2) engine support bolt tightening torque: TJ376Q is 73.5 ~ 102.9N = m, HC - C is 39.2N = m Eighteen Clutch 1) check and adjust the free travel of the clutch pedal 2) check the working conditions of the clutch 1) clutch pedal free travel: 15 ~ 30mm 2) clutch stable, no jitter and abnormal sound, no slip, separation thoroughly Schedule of basic operation of two stage maintenance for Xiali car (continued table five) Serial number Maintenance project Job content technical requirement Nineteen Transmission, differential 1) check the sealing condition of the gear box and fasten the bolts of each part 2) check gear oil, oil and oil surface height 3) clean the vent holes 4) check the transmission shift control mechanism 1) the gear box is clean and free of cracks, the parts are firmly connected and well sealed, without leakage 2) gear oil does not deteriorate, the oil level should be 0 to 5mm at the edge of the refueling port; the gear oil specifications are APIGL, 4 or GL, 5, and the capacity is 1.9 L, replaced annually 3) the vent is clean and unblocked 4) the gear shift mechanism is flexible and portable, acting normally, and it is no noise, jitter or disorder Twenty Drive shaft 1) check protective sleeve for damage or not 2) check the inside and outside cardan joint of the drive shaft 1) the dust cover shall not be cracked or damaged, the clamping ring is reliable, the support is not loose, and the dust cover can not generate a vacuum when the new dust cover is installed 2) universal joints are not loose, no jam, no noise Twenty-one Steering gear and steering mechanism 1) check the appearance and fastening condition of the dust cover of the steering gear 2) inspect the steering gear, rack wear and Meshing Conditions 3) check the booster pump 4) inspect the working condition and tightness of the steering gear, tighten the bolts of each part 5) check the power steering gear, unloading valve and limit function 6) check the steering wheel free rotation 1) the dust cover of the steering gear shall not be cracked or damaged, and the clamps shall be reliable 2) rack without deformation, no bite corrosion 3) the steering booster hydraulic cylinder both ends of the oil seal is good, the tubing is not deformed, no block, no leakage of the cylinder 4) the power pump works normally 5) the steering rod bushing is not loose, there is no obvious deformation of each rod, the ball head is not loose, and the bolt connection is reliable 6) the power steering valve is working properly, the limit is valid 7) the steering wheel freely turns: 30mm Twenty-two Wheel alignment and steering angle 1) check and adjust the toe 2) check and adjust the front wheel steering angle 1) the standard of wheel alignment value is as follows: Type TJTl36U2000 The camber of the front wheel is -30 degrees, and the soil is 45 ' Left and right '<45' The camber of the rear wheel is 1 degrees 00 'and the soil is 45' Left and right '<45' The caster angle of the front wheel kingpin is 35 ', and the soil is 45' (manual steering), 1 degree 33 'soil 45' (power steering) Left and right '<45' The internal inclination angle of the kingpin is 10 degrees 05 'and the soil is 45' Left and right '<45' Front wheel front beam (no load) is 0mm, soil 2mm 2) front wheel steering angle (no-load): The interior of the mechanical steering wheel is 37 degrees 02 ', the earth is 2 degrees, the outer ocean is 32 degrees, 03', the earth is 2 degrees, the power steering is 36 degrees, and the soil is 2 degrees, and the outer ocean is 32 degrees 22 '. "" 59. " Schedule of basic operation of two stage maintenance for Xiali car (continued table six) Serial number Maintenance project Job content technical requirement Twenty-three Front wheel brake 1) disassemble and clean the parts 2) inspect the worn condition of each part 3) check the brake wheel cylinder 4) assembly, lubrication assembly, check the clearance of the wheel hub 1) all parts are in good condition and clean 2) the brake disc surface shall not have cracks, groove, brake disc thickness not exceeding limit; type 2000 TJ7l46U brake disc thickness standard value is 18mm, the maximum value is 16mm; the other type of standard value is 11 mm, the maximum value is 10mm; disc diameter runout <0.05mm 3) there is no oil stain and no crack on the friction surface of the brake block, the thickness standard value is 11mm, and the limit value is 1.0mm 4) brake caliper fixing bolt tightening torque: 31~41 N ? M 5) the brake wheel cylinder is well sealed 6) hub bearing clearance: <0.10mm Twenty-four Rear wheel brake 1) disassemble and clean the parts 2) inspect the worn condition of each part 3) check the tightness of the brake wheel cylinder 4) assembly, lubrication assembly 5) adjust the clearance of the brake and the clearance of the wheel bearing 1) all parts are in good condition and clean 2) brake drum surface no oil, no crack, groove, diameter wear