Before removing the hydraulic cylinder, remove the bolts that fix the hydraulic cylinder to the manual forklift truck.
拆卸液压油缸之前，需要先将液压油缸固定在手动叉车上的螺栓拆卸下来。
Use a wrench or wrench socket to unscrew the bolt, then remove the hydraulic cylinder from the manual forklift.
使用扳手或扳手套筒拧下螺栓，然后将液压油缸从手动叉车上拆卸下来。
During the disassembly process, it is necessary to avoid the tilt or fall of the hydraulic cylinder to avoid damage.
在拆卸过程中，需要注意避免液压油缸的倾斜或者摔落，以免造成损坏。
Step four: Check the hydraulic cylinder
步骤四：检查液压油缸
After the hydraulic cylinder is removed, it can be inspected to determine the cause of the failure.
在拆卸液压油缸之后，可以对其进行检查，以确定故障原因。
First, check the appearance of the hydraulic cylinder for obvious damage or wear.
首先，检查液压油缸的外观是否有明显的损坏或者磨损。
Then, check whether the seal of the hydraulic cylinder is intact, if there is wear or aging, it needs to be replaced in time.
然后，检查液压油缸的密封件是否完好，如有磨损或老化，需要及时更换。
In addition, you can also check whether the piston rod of the hydraulic cylinder is bent or worn, and whether there is foreign matter or sediment inside the hydraulic cylinder.
此外，还可以检查液压油缸的活塞杆是否有弯曲或者磨损，以及液压油缸内部是否有异物或者沉淀物。
Step 5: Repair or replace the hydraulic cylinder
步骤五：维修或更换液压油缸
If the hydraulic cylinder is found to be faulty during the inspection, it can be repaired or replaced according to the specific circumstances.
如果在检查过程中发现液压油缸存在故障，可以根据具体情况进行维修或更换。
For the wear or aging of the seals, you can choose to replace the new seals.
对于密封件的磨损或老化，可以选择更换新的密封件。
For bent or worn piston rods, you can choose to repair or replace the rod with a new one.
对于活塞杆的弯曲或磨损，可以选择修复或更换新的活塞杆。
If there is foreign matter or sediment inside the hydraulic cylinder, the hydraulic cylinder can be cleaned or replaced.
如果液压油缸内部存在异物或沉淀物，可以进行清洗或更换液压油缸。