Date：2016-02-10 09:04:05    Viewed：

(1) remove the dump truck hydraulic cylinder before, should make hydraulic loop pressure relief. Otherwise, when the oil cylinder connected the tubing connector unscrewing, circuits of high pressure oil out quickly. Hydraulic circuit should be loosen when unloading overflow valve of the place such as a handwheel or pressure regulating screw, make the pressure oil unloading, then cut off the power or cut off power supply, make the hydraulic equipment to stop running.

(2) remove should prevent damage when the top of the piston rod thread, oil and the surface of the piston rod and the inner wall of the cylinder liner, etc. In order to prevent the piston rod and elongated bend or attachments, when placed application stow-wood bearing equilibrium.

(3) remove according to order. Due to all kinds of hydraulic cylinder structure and the size is not the same, disassembly sequence is also slightly different. General should put off the oil cylinder two cavity, and then remove the cylinder head, finally remove the piston and piston rod. When removing the cylinder head of hydraulic cylinder, the inside connection card key or card card key ring to use special tools, banning the use of a new; For flange end cover must be screwed out, do not allow the hammer or hard to pry. When piston and piston rod is difficult to take, not to play, should first find out the reason and then to remove.

(4) should try to create conditions to prevent discharge before and after unloading hydraulic cylinder parts are surrounding the pollution of dust and impurities. When, for example, remove, should as far as possible in a clean environment; After all the removed parts to use plastic cover, do not use cotton cloth or other work covered with a cloth.

(5) cylinder remove after carefully check, can continue to use to determine which parts, which parts can be repaired before use, the parts must be replaced.

(6) all parts must be carefully clean before assembly.

(7) to the correct installation of sealing device. (1) install the o-ring, don't pull it to the point of permanent deformation, and don't roll while suits, otherwise may leak due to form a distorted shape. When installing Y and v-shaped sealing ring (2), should pay attention to the direction of installation, avoid the oil instead. For the y-shaped sealing ring, the lips have to cope with the pressure oil cavity; In addition, Yx ring also note is use shaft or in the hole, don't wrong. V-shaped sealing ring by the different shapes of bearing ring, sealing ring and pressure ring, when pressure ring compression ring, ring sealing ring can be caused to form sealing function, when installation should be seal ring opening facing pressure oil cavity; Adjust pressure ring, is limited to not leak, not too tight, in case the seal resistance is too large. (3) sealing device, such as cooperate with sliding surface, the assembly should be coated with the right amount of hydraulic oil. (4) after removal of O ring and shield shall all be replaced.

(8) should be used when the threaded connection and tighten the special wrench, torque should accord with a standard to ask.

(9) after the piston and piston rod assembly, you must try to measure its alignment and whether of straightness error in length.

(10) assembly after the completion of the piston moves should be no block and resistance phenomenon such as uneven.

(11) installed on the hydraulic cylinder to the host, the joint between in and out of the oil must be combined with good sealing ring and tighten, prevent oil spills.

(12) after assembled as required, shall be carried out under the condition of low pressure reciprocating motion, several times to eliminate the gas in cylinder.