No matter how high-quality products for use in the same inevitably occur after a period of a few large and small issues manual pump specifications, thus affecting our use, deformation expansion phenomenon occurs if a manual hydraulic pump for use on its . It is understood that because it is known to manually pump the pressure vessel, the inner diameter of the cylinder will produce elastic or elastic-plastic deformation of the expansion in the cylinder swell place, the working fluid pressure in the cylinder chamber at the outer edge of the piston seal to the low pressure chamber string flow, and lose pressure, causing serious internal leakage. When the cylinder inside diameter swell, swell outside diameter must be synchronized manually pump, the outer diameter of the cylinder in the axial position with a ruler, measure the cylinder wall close to the manual pump wholesale, to ascertain the situation of the cylinder wall to swell. This phenomenon we need to give priority to its deployment of traffic, regardless of load size, wheel speed can compete with the full protection of the oil, residual supply of locally installed all loop applications to dispel the steering circuit because of excessive oil build success rate loss progress of the system effectiveness, reducing the manual hydraulic pressure of work. Whether it is for what the equipment, how much excellent quality even if it has, but its use for some time, it is inevitable not because of a variety of reasons, which led to some of its failures, large and small, thus affecting our work, for manual hydraulic applications, too, this has been applied to understand user manual pump may be customized, in use for manual hydraulic gear pumps, ultimately, when the gear pump is damaged also the need for timely treatment . In the presentation of relevant personnel, we can understand that in the manual hydraulic gear pump used for a period of time, its performance will decline, the survey showed that the main form of manual hydraulic pump damage is uniform sleeve, pump casing and gears wear and scratches, wear a uniform amount generally between 0.02-0.50mm, scratch depth is generally between 0.05-0.50mm. Due to restrictions by the farming season, after a short period of time to repair damage to the urgent need, but you must also consider the second life of the gear pump after repairs and maintenance costs and maintenance work in the field operability. Manual pump wholesale, quality speed hydraulic expertise (certified), Zoucheng hand pump provided by Dezhou City mass-velocity hydraulic machinery factory. Dezhou City mass-velocity hydraulic machinery plant (www.dzzhisu.com) (www.dzzhisu.com) is a leader in Dezhou, hydraulic equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Speed ??hydraulic leadership in quality with the staff warmly welcome all inquiries negotiations to create a better quality speed hydraulic future.