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Water pump failure and troubleshooting
- Feb 07, 2018 -

What is a water pump?

Water pump are machines that transport liquids or pressurize liquids for forklift. It transfers the mechanical energy or other external energy of the prime mover to the liquid to increase the energy of the liquid to forklift. It is mainly used to transport liquids including water, oil, acid-base liquid, emulsion, suspoemulsion and the liquid metal of forklift.


Liquids, gas mixtures, and liquids containing suspended solids can also be delivered. Water pump performance of the technical parameters of flow, suction lift, lift, shaft power, water power, efficiency, etc; according to different working principle can be divided into volume pumps, vane pumps and other types. Volumetric pump is the use of changes in the volume of its studio to transfer energy; vane pump is the use of rotating blades and water to transfer energy, with centrifugal pump, axial pump and mixed flow pump type of forklift.


Working principle

1, positive displacement water pump: the use of the working chamber volume change of periodic delivery of liquid.


2, Forklift vane pump: the use of leaves and liquid interactions to transport liquid.


The role of the pump:

Forklift water pump role, it is mainly used to forklift parts need to use coolant pressure, so that the cooling fluid circulation. At present, most of the water pumps used on the forklift engine are mechanical centrifugal pumps, which are mainly composed of a pump cover, a water pump shaft, a bakelite gasket, a grease nipple, a bearing spacer, a lock ring, a pulley, a nut, a bearing, , Impeller, water seal bowl, lock ring, inlet pipe, outlet pipe, forklift and other parts.


Water pump failure and troubleshooting:

1, forklift pump vibration during work: This failure occurs because the forklift water pump rotor bearing imbalance or coupling with poor, resulting in bearing wear and tear, rotating forklift parts of the forklift parts loosening, rupture, pipe bracket is not solid and other failures . Remedy: Repair staff can take the adjustment, repair, reinforcement, straightening, replacement and other methods to exclude.


2, the forklift water pump outlet pipe or water leakage: This failure occurs when the screwdriver is not tight when installing the forklift water pump. If the leakage is not serious, can be directly in the leakage of the site smear a certain sealant to solve. If the joints leak, you can use hand or tool to tighten the reinforcement screw cap. Serious leakage must be reassembled or adjusted forklift water pump.


3, poor water pump forklift truck water pumping: The reason for this failure is because the forklift pump overheating, very often because the pulley pressed too tight, bearings caused by lack of oil damage. Can be adjusted after testing the belt tightness.


4, the forklift truck does not absorb water or not drain. This failure is mostly caused by the water pump impeller broken, thermostatic valve is broken or impeller runner blockage caused. Water pump can be checked by one by one, respectively, to take the end of the repair valve, remove the blockage, correct steering, cleaning impeller and other forklift measures to be ruled out.