An annual output of Shanghai Volkswagen era Superman sedan, equipped with AJR engine, the car suddenly stopped on the road can not start. After on-site inspection, determine the timing of the tooth belt fracture. Then the car was dragged to the repair station repair.
    Maintenance personnel to repair the car, the initial inspection and found that the timing of the tooth belt is not broken and broken, turn the camshaft, found that the camshaft has been locked can not turn. Maintenance personnel identified the timing of the tooth belt fracture is due to the camshaft caused by the lock, and by asking the owner that the car overhaul engine time is not very long, overhaul the engine had changed crankshaft, oil pump and timing teeth With other parts.
    First, remove the cam chamber cover, check the camshaft lock the situation, check that the camshaft multi-channel journal and shaft cover has been due to poor lubrication and high temperature bonding together, the camshaft lock that the car's Lubrication system is faulty. Due to the timing of the tooth belt after the engine piston operation of the moment the valve has the possibility of the top of the piston, coupled with poor lubrication, crankshaft and bearing may also be injured, taking into account these factors, decided to disassemble the car engine, hope at the same time Find the cause of camshaft damage caused by poor lubrication. After the decomposition of the engine, check all the valves are not the top; check the crankshaft journal has been a multi-channel was injured, while multi-channel bearing a different degree of wear; check the oil pump can be seen, because the oil pan was a serious collision And deformation, resulting in oil pump suction port is also slightly deformed (with photos), check the suction port metal filter is not blocked, according to experience to determine the oil pump pump oil is not abnormal, check the cylinder on the oil channel did not find any clogging and Leakage of the situation.