How To Disassemble The Locomotive When It Is Overhauled (Part 2 Locomotive Assembly)

Hello，guys.Yesterday I shared with you how to dismantle the locomotive when repairing the locomotive. The friends who have not seen it can click on the right to revisit the”How To Disassemble The Locomotive When It Is Overhauled (Part 1 Locomotive Dismantling)”. Today, let me talk about it. How to assemble a locomotive.

(1)Each assembly should be carefully cleaned before assembly. During the assembly process, it should be kept strictly clean. Any dirt present on the assembly surface and non-assembly surface may cause the parts to wear abruptly and even prevent the locomotive from operating normally. Drilled, reamed or boring parts are blown with compressed air. For example, after boring the spindle on the cylinder block, the lubricating oil channel must be carefully cleaned and flushed to prevent metal chips, dirt, and cotton yarn from entering the oil channel.

(2)On the friction surface of the part, the lubricant should be applied during assembly so that the machine can be sufficiently lubricated at the start of operation. After the blanket oil-retaining ring is cleaned, it must be soaked in the oil to allow the oil to penetrate.

(3)Pay special attention to the mounting position for some parts. Improper installation, the light machine can not be operated, and the serious ones will damage the parts and even affect the normal operation of the machine.

(4)When replacing liners during repairs, be sure to pay strict attention to their thickness, because the thickness of the mat often determines the device gap between the parts, which affects the technical performance of the machine. In the installation, both sides of the liner should be coated with a layer of grease (except for the engine cylinder gasket). The liner must not be bent, cracked, uneven in thickness, or overlap with each other.

(5)Special tools and equipment should be used as far as possible during assembly. Fittings of interference fittings are generally pressed together to avoid striking with a hammer. If you really need to use, you can use a soft hammer such as copper or wood to strike lightly, it is forbidden to knock hard and damage the parts. Fittings with a large amount of interference can be fitted with a heat jacket when assembled. Lubricating the contact surface during assembly helps to press in and reduce the press-in force.

(6)When tightening the bolts and nuts, do not use spanners as far as possible, and use various standard special wrenches or open-end wrenches. For bolts and nuts of important parts, use torque wrenches to tighten them according to the specified torque.

(7)Every bolt, nut lock, wire, and split pin must be carefully inspected. All cracks, wrinkles, and other defects must be replaced. Ensure that the lock is safe and reliable.

(8)Parts that have oil passages, oil holes, and tubing must be repeatedly checked for compatibility between the oil hole and the oil hole.

(9)The parts to be positioned must be verified with each other's position, direction, or sign during installation, and the clearance should be adjusted to ensure the normal operation of the parts. If the piston and connecting rod should pay attention to the direction during assembly, the timing gear should ensure the correct timing of oil supply, ignition and gas distribution.

(10)The bolts and nuts shall be erected during installation, and the surfaces that are attached to the parts shall be smooth and smooth to prevent damage to the threads and loosening. Tighten the bolts and nuts, and they must be symmetrically crossed from the inside to the outside in order of strength, and be gradually tightened. After the connecting bolts are fixed, the head should expose 1-3 threads.

(11)The installation seals should be tight, and there should be no leakage, leakage, or leakage.

(12)During installation, it is necessary to prevent missing fittings, misplaced fittings, scratched fitting surfaces, and foreign objects from falling into the machine.

(13)Assembly of key connectors. The key connector must transmit a considerable amount of force during operation, and therefore the force surface needs to be accurately matched, otherwise the key and the keyway may be quickly damaged. The key should fit tightly in the keyway on the shaft, and in the keyway of the part that is connected to the shaft, the two sides are the middle and there should be a certain gap above.