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Method Of Eliminating Common Trouble Of Hand Hydraulic Pump

  Method of Eliminating Common Trouble of Hand Hydraulic Pump

  Hand Hydraulic Pump manufacturers tell us to be more useful to repair them, we should first find the equipment of the fault factors. For example, we should promptly check the boom cylinder internal leakage situation. The simplest way is to raise the boom to see if it is not a significant free reduction. If the drop is significant, then open the cylinder to see the seal if the wear should be replaced. Also check the operating valve. Mainly clean the safety valve to see if the spool is not worn, such as wear should be replaced. If there is no change after the safety valve device, then check the operation valve spool wear situation, the void limit is usually 0.06mm, wear severe should be replaced. Measure the pressure of the hydraulic pump. If the Hand Hydraulic Pump pressure is low, then adjust, the pressure is still not up, then clarify the Hand Hydraulic Pump severe wear and tear.

  First, in the repair Hand Hydraulic Pump from the following points to find fault factors, and to improve the system:

  1, see the boom cylinder of the internal leakage situation. The simplest way is to raise the boom to see if it is not a significant free reduction.

  2, if the drop is significant, then open the cylinder to see the seal if the wear should be replaced.

  3, view the operation valve. Mainly clean the safety valve to see if the spool is not worn, such as wear should be replaced.

  4, if there is no change after the safety valve device, and then check the operation valve spool wear situation, the void limit is usually used 0.06mm, wear severe should be replaced.

  5, measure the pressure of the hydraulic pump. If the Hand Hydraulic Pump pressure is low, then adjust, the pressure is still not up, then clarify the Hand Hydraulic Pump severe wear and tear.

  Hand Hydraulic Pump common problems of cleaning methods?

  (1) Increase or replace the oil that meets the required grade according to the season to the specified oil level. Remove the foreign body in the tubing, tighten the bolt or nut at the joint;

  (2) replace the aging or damaged skeleton oil seal or "O" shaped seal ring;

  (3) replace the wear of the gear pump or pump sleeve, wear slightly in the flat face when the flat grinding flat. (The normal value is lower than 2.5 ~ 2.6mm), such as ultra-poor when the sleeve should be fitted with 0.1 ~ 0.2mm copper to compensate, Hand Hydraulic Pump The device should be set in the rear axle on the load;

  (4) unloading film and seal ring is necessary to install in the oil chamber, two sets of holes to maintain balance. Unloading sheet seal ring should have a preload of 0.5mm;

  (5) guide wire elasticity should be able to together on the upper and lower shaft sleeve to the direction of rotation of the driven gear to change a small point of view, so that the main and driven gear two sets of sleeve close to the processing plane;

  (6) The unloading slot on the sleeve is necessary to be mounted on the side of the low pressure chamber to eliminate the occurrence of harmful dead volume when the gear is engaged


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