General tools are hammers, drivers, pliers, wrenches and so on.
(1) Hand hammer A hand hammer is composed of a hammer head and a handle. The weight of the hammer is 0.25 kg, 0.5 kg, 0.75 kg, 1 kg and so on. The shape of the hammer has a round head and a square head. The handle is made of hardwood and is generally 320-350 mm long.
(2) Driver Driver (also known as screwdriver), is used to tighten or loosen the groove screw tool. The driver is divided into wooden handle driver, through center driver, clip driver, cross driver and eccentric driver. The size of the driver (rod length) points: 50 mm, 65 mm, 75 mm, 100 mm, 125 mm, 150 mm, 200 mm, 250 mm, 300 mm and 350 mm, etc. When the driver is used, the edge end of the driver should be flush and consistent with the width of the screw slot. There is no oil on the driver. Let the lifting port and the screw slot completely match, the center line of the driver and the screw center line concentric, turn the driver, you can tighten or loosen the screw.
(3)There are many kinds of pliers. Lithium fish pliers and needle-nose pliers are commonly used in automobile repair. 1. Carp pliers: hold flat or cylindrical parts by hand, with cutting edge can cut metal. When using, wipe the oil on the pliers, so as not to slip when working. Clamp the parts, then bend or twist cut; When clamping large parts, enlarge the jaws. Do not use pliers to turn bolts or nuts. 2, needle-nose pliers: used for clamping parts in narrow places.
(4) Spanner is used for folding bolts and nuts with edges and corners. There are open spanner, box spanner, box spanner, flexible spanner, torque wrench, pipe wrench and special wrench commonly used in automobile repair.
1, open wrench: There are 6 pieces, 8 pieces of two kinds of opening width range of 6~24 mm. Suitable for folding general standard specification bolts and nuts.
2, box wrench: suitable for folding 5~27 mm range of bolts or nuts. Each set of box wrenches comes in 6 and 8 pieces. The two ends of the box wrench are like sleeves, with 12 corners, which can cover the head of the bolt or nut, and it is not easy to slip off when working. Some bolts and nuts are limited by the surrounding conditions, especially the plum screws.
3, socket wrench: each set has 13 pieces, 17 pieces, 24 pieces of three. Suitable for folding some bolts and nuts due to the position limit, ordinary wrench can not work.When folding bolts or nuts, different sleeves and handles can be selected as required.
4, adjustable wrench: the opening of this wrench can be adjusted freely, suitable for irregular bolts or nuts. When in use, the jaws should be adjusted to the same width as the opposite side of the bolt or nut, and make it close, so that the wrench can move the jaws to bear the thrust, and the fixed jaws to bear the tension. Wrench length of 100 mm, 150 mm, 200 mm, 250 mm, 300 mm, 375 mm, 450 mm, 600 mm several.
5. Torque wrench: used to tighten the bolts or nuts with the sleeve. Torque wrench is indispensable in automobile repair, such as cylinder head bolt, crankshaft bearing bolt fastening must use torque wrench. The torque wrench used in car repair has a torque of 2881 Newton-meters. 6, special wrench: or ratchet wrench, should be used with socket wrench. Generally used for tightening or disassembling bolts or nuts in narrow places, it can disassemble or disassemble bolts or nuts without changing the Angle of the wrench.
The special toolscommonly used in automobile repair are spark plug sleeve, piston ring handling pliers, valve spring handling pliers, butter gun, jack items, etc.
(1)Spark plug sleeve The spark plug sleeve is used to disassemble and install the engine spark plug. The inner hexagonal opposite side of the sleeve is 22~26 mm, used for folding 14 mm and 18 mm spark plug; The inner hexagonal edge of the sleeve is 17 mm, which is used for folding the spark plug of 10 mm.
(2) Piston ring handling pliers Piston ring handling pliers for loading and unloading engine piston rings, to avoid the piston ring uneven force and disassembly. When in use, the piston ring loading and unloading pliers jam the piston ring opening, gently shake the handle, slowly shrink, the piston ring will slowly open, the piston ring into or out of the piston ring groove.
(3) Valve spring unloading pliers Valve spring unloading pliers for loading and unloading valve springs. In use, retract the jaws to the smallest position, insert under the valve spring seat, and turn the handle. Press the left palm forward to make the pliers close to the spring seat. After loading and unloading the air lock (pin) piece, rotate the valve spring handling handle in the opposite direction and take out the handling pliers.
(4)Butter gun is used to fill grease at each lubrication point, and is composed of oil nozzle, oil pressure valve, plunger, oil inlet hole, rod head, lever, spring, piston rod, etc. When using a butter gun, put small balls of grease into the oil storage cylinder to remove air.After decoration, tighten the end cover to use. When adding grease to the nozzle, the nozzle should be positive and not skew. If no oil, should stop filling oil, check whether the nozzle is blocked.
(5) Jack The jack has screw jack, hydraulic jack and hydraulic lift. Hydraulic jacks are commonly used in automobiles. The lifting force of the jack is 3 tons, 5 tons, 8 tons, etc. Hydraulic jacks are used to lift cars and other heavy objects. The structure is composed of a top block, a screw rod, an oil storage cylinder, an oil cylinder, a shaking handle, an oil plunger, a plunger barrel, an oil valve, an oil valve, a screw plug and a shell. Before using jacks, pad the car with triangular wood; When used on soft road, the jack should be padded with wood; When lifting, the jack should be perpendicular to the weight; It is forbidden to work under the car when the item is not firmly supported and falling down. When using the jack, first tighten the switch, put the jack, on the top position, press the handle, the weight will be lifted. When dropping the jack, turn the switch slowly and the weight will gradually drop.
article source: https://www.jocentools.com/news/take-stock-of-the-old-drivers-car-repair-kit-a-brief-discussion-on-the-common-vehicle-maintenance-tools/
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