Heidelberg HD102V four-color offset press failure repair example (4)

Fault 17: There is a slight abnormal impact sound of the transfer roller. Cause: Biting the paper to open the cam plate fastening bolt loose or break off, causing the cycle to open the teeth at the moment the cam swings, making the collision of abnormal sound.
Repair: This fault is generally not easy to find, the key is to correctly determine, once the fault is found, repair is easy, only three M6 bolts can be adjusted tightly.
Fault 18: Periodical abnormal noise in the impression cylinder: Causes: Some grippers have been improperly adjusted and collided with the drum to repair: Accurately determine the sound position, check the biting paper back and the drum for scratches, individual adjustments can.
Fault 19: Insufficient action of the ink transfer roller Cause: The elastic pin is sheared.
Repair: replacement of new parts, due to space limitations, the problem is small, but not easy to find, difficult to disassemble, the piece can be West Germany DINl481
Standard processing, 86 years, the country has developed a standard GB879-86, many manufacturers have begun production, if not purchased on time, can be made of spring steel sheet.
Fault 20: The water outlet roller does not turn Causes: 1 The circuit or outlet roller motor is bad, part number 93.178.1343; 2 The motor base is fastened with fastening bolts, and the motor is skewed; 3
Water roller needle bearing damage stuck.
Repair: 1 check circuit and motor; 2 the motor is tightened; 3 replace the bearing, it is recommended to choose the replacement parts, the price is at least 10-30 cheaper
Times [A. According to West Germany DIN618 standard processing; B. According to the national standard, the bearing size is similar to the bearing size, such as 942/20;
C. Replacement of nylon rod sleeve (sliding bearing)].
Fault 21: The transfer roller is in misaligned, crumpled paper, rotten paper, poor long-term adjustment Cause: Broken roller (bearing) is damaged, part number 00.550.0096, this fault repair is easy. However, if you do not observe the analysis carefully,
However, it is harder to find because the amount of swing is very small.
Repair: Replacement of new parts; or according to West Germany DIN5412 standard processing; or select the national standard bearings, matching pin shaft replacement.
Failure 22: Feida suction paper difficult reasons: suction nozzle erosion; 2 poor air flow or air pump wear caused by small wind.
Repair: 1 side painted processing suction nozzle; 2 check the gas path and air pump, symptomatic treatment.
Fault 23: Feida lifting adjustment pinion bad repair: 1 mapping processing; 2 adhesive repair.