1. use the wrench to tighten bolts. Sometimes there will be problems with assembly and disassembly due to incomplete random wrenches. At this time, the following methods can be used to solve urgent problems (mainly for plum spanner, open spanner and inner six angle wrench). If the plum or open wrench used is larger than the bolt head (or nut) to be wrung, the inner six angle wrench is smaller than the bolt head to be screwed, and can be used in the wrench (plum, open wrench) or wrench (six angle wrench) to cushion some copper skin, wire or screwdriver, and then slowly add force and install, while the open wrench is more than the bolt head. 或螺母)小、内六角扳手比螺栓头大时，可分别用锉刀将开口扳手开口锉大，将内六角扳手的六方尺寸锉小。 In most cases, the emergency disassembly and installation can be solved through the above treatment, and the restructured wrench can be reserved for later use.
2. the connecting rod bearing of air pump (type SKI-82) of type W4-60 excavator is often easily damaged. The outer ring of the bearing is still inlaid in the connecting rod hole, and it is hard and easy to slip because of the outer ring when using the saw saw, and hard knocking and hard knocking can easily damage the connecting rod. At this time, the connecting rod can be clamped on the table tongs, the sleeve head in the heavy sleeve wrench is selected, the outer ring is stuck to the bearing outer ring which is slightly smaller than the bearing outer ring, the other side holds the side of the connecting rod hole with the bigger size of the connecting rod bearing hole, and then gradually adds force to clamp the table clamp, so the bearing outer ring will be slowly pressed out. If a gas cutting tool is used, the outer ring of the bearing can be cut directly by gas cutting.
3. detachable tires to disassemble the tires of the large wheel loader and bulldozer, it is a difficult thing to separate the tires and rims. The rims may be corroded because of the long use of the tires, and the rims and the rims are very tight. It is not ideal for the removal of air and back and forth rolling, and the following method can achieve good results: after the ring is removed (some imported engineering machinery, such as the WD140 type bulldozer's tyre is equipped with outer ring), water is added between the tire and the rim of the wheel to profit, and two bulldozer Spads are used to press the wheel respectively. Both sides of the tire, the middle of the middle with a suitable length of iron rod across the rim, and then wear a wire rope with a crane or loader lifting, so that the tire and the rim is easily separated.
4. pin sleeves of W4-60C type excavators are used for long time use, lack of lubrication and damage. When replacement is not paid attention to, the pin sleeve is often not installed in place, causing end damage. In this case, the pin can be put on the corresponding pin shaft, and then the pin shaft is inserted into the pin seat hole to locate the pin, and then the pin shaft end is hammered with a hand hammer, so that the pin sleeve is pressed into the pin socket hole. This method does not damage the pin sleeve, does not produce skew, and is simple and reliable.
5. use bicycle parts for emergency, if the small steel ball in the inner hole of the diesel fuel injector is lost, it can be replaced by the bicycle flywheel ball or the small steel ball in the abandoned butter mouth; the clutch separation bearing spring is broken and can be replaced by the stretch spring under the bicycle seat; turn to the fork and the steering arm. If the pin is worn, it can be replaced by a bicycle crutch; when the tire is filled and deflated, if it is unsuitable, or the lower part of the valve core is broken in the valve mouth after long term use, and the broken part is difficult to take out, a bicycle spoke is advisable to screw its threaded end into the valve mouth of the broken core and make the spoke. The threaded thread is inserted into the core and then withdraws the spoke so that the broken core remaining in the valve mouth can be removed.
6. when using daily necessities to clean the engine oil pan or the surface of the engine, if the iron chips are too much to be washed out, a proper amount of dough can be used. When the floater of the gasoline carburetor is broken, it can be used by the cork of the thermos bottle to make the three pairs of precision pairs of the oil generation machine and the slight scratch on the lamp glass. Toothpaste lapping; household detergent can be used to clean mechanical parts and parts, especially suitable for cleaning rubber parts. After washing, there will be no swelling and deformation; cleaning the parts with lubricating oil with washing powder and sawdust; if it is found that the electrolyte level of the battery electrolyte is too low to prevent the plate vulcanization, it can be bought by the pure water in the market and poured into it. In the storage battery, it is easy to make aluminum washer or the funnel of filling and adding water. When the damage of the water radiator, oil cooler and hydraulic oil radiator is found to cause oil leakage, leakage and leakage, the leakage place can be found by the method of cigarette blowing.
7. use electrical appliances emergency diesel engine high pressure oil pipe joint platform shoulder leakage, can be cut a section of 16 electrical fuse wound under the fastening nut; if the magnetic motor is dismantled when the high pressure contact carbon rods are lost, the magneto can not produce high voltage, can be used in dry battery carbon core for a short period of substitution.
8. other emergency methods, the oil leaks at the nipple of the high pressure tubing, can be cut into a small ring with plastic or soft metal pieces, and padded in the cavity of the joint. When the generator carbon brush is overly worn or the spring force is not enough to affect the power generation, the wood or bark can be used to cut the length and width of the brush, between the spring and the carbon brush, which can increase carbon. The contact pressure of the brush and the whole liquid is brushed; the cleaning silk Luffa collaterals can replace the wire filter core of the air filter; the rubber oil seal is loose from the tight spring, and can be made up with the method of adding the rubber band.
The joint surface of the parts is sealed with sealing gasket, and a layer of oil resistant sealant is applied to the gasket to increase the sealing effect. For example, there is no sealant for a moment and can be replaced by paint; the viscosity of the paint is larger and hardened after drying, so that the seal is reliable and the effect is good. Such as a Nissan WD140-4 type bulldozer gas pump failure, after repair installation, because there is no sealant and on the pump cover seal pad coated with a layer of paint, the use proved that the effect is very good.
