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Technical Problems in Application of Triple Gear Oil Pump
Release time:
2019-06-08
Disassembly and disassembly of the triple gear oil pump should be carried out in a clean place. After the removed parts are cleaned with gasoline or diesel, carefully check the grinding state of each part to confirm whether it can continue to be used, and then use the parts that can continue to be used. Place carefully in order.
Technical requirements for assembly of triple gear oil pump:
1. During assembly, the joint surface and friction surface of each accessory should be coated with engine oil, and the self-tightening oil should be sealed into the oil pump cover and must be pressed to the bottom without damage. Seal table.
2. Clean the whole accessories with gasoline or diesel, and carefully check the technical status of each accessory. During assembly, the width of the driving gear and the driven gear are required to be the same to ensure that the end face of the gear and the end face of the shaft sleeve are tightly fitted during the operation of the oil pump; when the sleeve gear set is installed into the housing, the axial clearance of 0.10-0.12mm should be guaranteed; The small sealing ring should be higher than the ring, and there should be a pre-compression amount of 0.40-0.55mm, the pre-compression amount of the large sealing ring is 0.6-0.7mm
3, and the pressure relief amount of the shaft sleeve is beneficial to remove the closed dead volume generated when the gears are meshed. Therefore, during assembly, pay attention to the pressure relief position. The pressure relief plate and the sealing ring shall be located on the side of the oil suction chamber, that is, on the side of the large hole with the word "inlet" in the oil pump housing.
4. When screwing the screw from the pump cover to the housing, the scene should be rotated alternately several times with a torque of 49 ~ 59N · m.
5. When the assembled triple gear oil pump rotates the driving gear by hand, it should be smooth and free of straps, and the rotating torque should not be greater than 3N · m.
2. When disassembling the gear pump, the following questions should be paid attention to:
1. The gear pump is a precision part. When it is not judged that the fault does occur in the gear pump, it is generally not easy to disassemble.
2. After disassembling the gear pump assembly, clean the oil and dust outside the oil pump assembly first. Before disassembling, make a mark on the pump cover and the pump body with a steel sheet (try to use a marker pen) so as to assemble according to the mark.
3. Accessories that are severely worn and cannot be used any longer shall be replaced with new ones in complete sets or in pairs. If a pair of gears should be replaced, otherwise the difference between the two gears will affect the pressure of the oil delivery.
4. Disassembly and disassembly of the triple gear oil pump should be carried out in a clean place. After the removed parts are cleaned with gasoline or diesel, carefully check the grinding state of each part to confirm whether it can continue to be used, and then the parts that can continue to be used should be carefully placed in order.
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2020-12-10
Kunshan Jiafengsheng Precision Electronics Co., Ltd.
Contact: Hu Guang
Tel: 0512-50132658
Fax: 0512-50132758
Mobile Phone: 13812899484
Mailbox: huguang@ksjfs.cn
Address:
555 Yingbin West Road, bacheng town, Kunshan City
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