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The special tools commonly used in automobile repair ar […]
The special tools commonly used in automobile repair are spark plug sleeve, piston ring loading and unloading pliers, valve spring loading and unloading pliers, grease gun, Jack, etc.
（1） Spark plug sleeve
The spark plug sleeve is used to remove the engine spark plug. The size of the opposite hexagon of the sleeve is 22-26mm, which is used for folding 14mm and 18mm spark plugs; the size of the opposite hexagon of the sleeve is 17mm, which is used for folding 10mm spark plugs.
（2） Piston ring handling pliers
Piston ring loading and unloading pliers are used for loading and unloading engine piston rings to avoid uneven force on the piston rings.
When in use, the piston ring loading and unloading pliers shall be clamped at the opening of the piston ring, the handle shall be held lightly, and the piston ring shall be slowly expanded, and the piston ring shall be installed or removed from the piston ring groove.
（3） Valve spring handling pliers
The valve spring unloader is used to load and unload the valve spring. When using, shrink the jaw to the minimum position, insert it under the valve spring seat, and then rotate the handle. Press the left palm forward firmly to make the jaw close to the spring seat. After loading and unloading the valve lock (PIN), rotate the valve spring loading and unloading handle in the opposite direction and take out the loading and unloading pliers.
（4） Butter gun
Grease gun is used for filling grease at each lubricating point, which is composed of oil nozzle, oil pressure valve, plunger, oil inlet hole, rod head, lever, spring, piston rod, etc.
When using the grease gun, put the small grease into the oil storage tank to remove the air. After decoration, tighten the end cover to use. When lubricating grease is applied to the oil nozzle, the oil nozzle shall be aligned without skewing. If there is no oil, stop filling and check whether the oil nozzle is blocked.