The method of removing the gear depends on the size, type, and installation of the gear. Here are some common disassembly methods:
The tapping method. Tap the gear with a rubber hammer to loosen any dust or dirt on the gear and help loosen the gear. If it fails to be removed at one time, try gently rotating the gear and repeating the tapping process.
The pry bar method. Insert the pry bar into the gap between the gear and the shaft, gently move the pry bar to widen the gap, loosen the gear, and then slowly rotate the pry bar until the gear is completely loose.
Heating method. Use a gas lamp or blowtorch to heat the gear and adjacent metal parts, taking care that the heating temperature should not be too high (not more than 300 degrees Celsius), so as not to affect the performance and life. After waiting some time for the metal to loosen, tap the gear with a rubber mallet.
Hydraulic method. Using hydraulic tools, the hydraulic cylinder is mounted on the gear, the pipe is connected to the hydraulic pump, and the hydraulic pressure is gradually increased until the gear is loose.
Disaxle method. Insert thick pieces of paper, metal or plastic between the gear and the shaft, and tap the gear with a rubber mallet to remove it.
Use a wrench and gauge. For large gears, use a wrench to remove nuts or bolts. First measure the size of the big gear and shaft with a feeler to ensure the accuracy of the operation, and then tap the big gear with a hammer to loosen the connection between it and the shaft, and slowly remove the big gear from the shaft.
Use a special pulling tool or sling. For large gears, a special pulling tool or sling can be used to remove the gear, a method that requires an experienced professional to operate.
Use professional tools. For example, a thimble is used to remove the dowel of a stuck gear; Remove bearings or pins using appropriate tools.
Before any disassembly operation, ensure that the gear has been completely stopped and take the necessary safety measures, such as wearing gloves, goggles and other protective equipment. During disassembly, it may be necessary to record the position and size of the gear to facilitate subsequent installation work.
