Wrenches include open-ended wrenches, ring wrenches, socket wrenches, adjustable wrench, torque wrenches and Allen wrenches. The opening size of the selected wrench must be the same as that of the bolt or nut. The wrench opening is too large, which is easy to slide down and damage the hexagon of the screw.
2, screwdriver:
Screwdriver includes straight screwdriver and cross screwdriver. The selection of screwdriver model and specification should be based on the width of the groove, and live operation is not allowed; When using, in addition to applying torsion, appropriate axial force should be applied to prevent parts from sliding and damage; Don't pry anything with a screwdriver.
3. Hammer:
Hand hammers include locksmith hammers. When using a hand hammer, remember to carefully check whether the hammer head and the hammer handle are wedged tightly and hold the hammer behind the hammer handle.
4. Needle-nosed pliers and piston ring disassembling pliers:
Be careful not to point the cutting edge at yourself when using, put it back after use and put it in a place where children can't reach it easily to avoid injury.
Extended data:
Precautions for engine disassembly:
1. Clean the outside before disassembling the engine. Drain cooling water and all lubricating oil parts (oil pan, transmission housing, final drive housing, etc.). ). During the demolition, the staff should reasonably organize the division of labor, not influencing each other, but also cooperating with each other to improve work efficiency. When disassembling the engine, you should follow the operating rules and sequence, and keep the work site clean and tidy. ?
2. Dismantle the engine from the outside to the inside, and from the accessories to the main body. For parts that have tolerance fit requirements and cannot be interchanged, check whether there is any mark when disassembling, and mark them if there is no mark. ?
3. Tools should be used correctly. Pliers, wrenches and screwdrivers should not be used instead of hammers and pickaxes. Pay attention to the direction of stress when using various wrenches; When removing the pin, shaft and bushing with static fit, use a special punch or a copper punch, and don't knock directly; When removing gears and pulleys, press or puller should be used. If there is no such equipment, a soft metal chisel can be used to strike the non-working surface symmetrically. ?
4, in case of parts rust is not easy to remove, can use gasoline, engine oil wetting or heating, and then remove.