The Diesel Engine Water Pump's Structure and Operation

 

The Structure and Operation of a Diesel Engine Water Pump are as follows:

The water pump impeller is inserted in the volute after the casing is formed into a volute shape. Four stud bolts link the water pump bearing seat to the water pump housing, and a pad in the middle prevents water leakage. Two rolling bearings support the water pump shaft on the water pump body, the front end of which is pressed and riveted to the water pump impeller, and the rear end of which is attached to the pulley via the semicircular key on the conical surface. On the water pump bearing seat, there is a screw-cap oil cup; fill it with calcium-based lubricating grease and twist the cup cover frequently to allow the lubricating oil to enter the bearing and lubricate the rolling bearing. When the water seal component rotates, the water seal four-corner plate made of wear-resistant material rubs against the central circular seat surface of the bearing seat to seal, preventing the cooling water from flowing out along the water pump shaft. If the water seal fails, not only will cooling water be lost, but the lubrication of the water pump bearing will be destroyed (cooling water will leak into the bearing seat, causing damage to the bearing). The oil drain hole's purpose is to leak a little amount of cooling water that has escaped through the water seal over time. If the hole leaks, the water seal should be replaced rather than the hole being blocked. The impeller should not be removed while replacing the water seal, but the pulley should be removed and the water pump shaft should be forced out. The lower end of the pump body has a drain Wide that is used to drain the water pump's cooling water.

water pump

Repair of The Water Pump:

Wear of the pump shaft and shaft sleeve, loose fit of the shaft sleeve and the pump body, wear of the impeller and pump casing, and damage to the water blocking ring are the primary problems of the water pump. Water leakage is a regular occurrence once a pump has been updated.

  1. When the water pump shaft and shaft sleeve are worn, the shaft can be electroplated or vibrated back to its original size, and a new standard shaft sleeve can be installed at the same time. The shaft and new sleeve both meet the normal fit clearance requirements. The front and rear bushings should be reamed at the same time as the dumpling hole to guarantee that the two bushings are coaxial. The coaxiality of the two bushings must be less than 0.03mm in most cases. Frequent disassembly and assembly, tightening nut not according to the specified torque, or incorrect nut (bolt) of different specifications are all causes of shaft end thread slip or damage. If the damage or slip is limited to two buttons, it may be cleaned by tapping; if there are more than two, it can be manually resurfaced and then turned to the regular size. Cracks in the water pump shaft should be destroyed.
  2. Two rolling bearings support the water pump shaft. The process of electroplating the inner ring of the bearing can also be used to restore the fit when the water pump shaft and the rolling bearing are loose.
  3. The wear part of different models can be used to assess if the fit between the pump body seat hole and the shaft sleeve or rolling bearing is slack. Landtopmall crankshaft for thermo king sb 190 engine is a product that combines digital and industrial automation technologies to provide high speed, high performance, and low pollution discharge.
  4. Automatic start-up: The diesel pump unit may automatically start and put into full-load operation within 15 seconds after receiving fire/pipeline network pressure/power failure/or other starting indications.
  5. Automatic charging: To ensure a smooth start, it can be charged automatically by the charging motor of a city or diesel engine.
  6. Automatic alarm: protection against low oil pressure and high water temperature in diesel engines;
  7. Automatic preheating: the diesel engine is on standby in case of an emergency;
  8. Direct type: the diesel engine and the water pump are utilized below the 360 kW diesel engine pump, and the failure point is directly reduced through the flexible coupling connection technology, which considerably reduces the unit's start-up time and improves its dependability and emergency performance;
  9. Other alarm outputs can be requested by the user (non-standard supply).
  10. Work. Telemetry, remote letter, and remote control functions are included (non-standard)

water pump

Troubleshooting

  1. Work notices that the seat is uncomfortable, and an uncomfortable seat is not a loophole.
  2. First, we enter the pump, open the pump lid, start the little throttle, and the engine runs, revealing the fuel pump's internal leaking. The little bubble rolling mechanism of the oil flow can be seen if the cylinder piston and subscapular oil plunger are studied.

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