The role of the seal oil spill closed box chamber gap and prevent dust, sand and dirt intrusion tank chamber, but if improperly installed or used, is likely to cause fluid leaks, affecting the normal operation of the machine ,75-a cause burn bearings, broke gear, twist off the drive shaft or other serious faults.
Since the tight rubber seal skeleton Installation Considerations
(1) Install oil seal, it shall be checked whether the journal surface is too rough, with or without injuries, especially without a long scar along the axial direction. If the journal surface is too rough, can easily damage the oil seal lip 1:3 or accelerated wear, damage its sealing performance. If the journal surface due to improper disassembly bludgeoning more serious injuries, oil seal lip will fit with the journal surface lax, resulting in oil leakage. In both cases, the Ministry of injuries can re-surfacing according to the provisions of the journal size lathe round, or replace the new axis. If the journal only metal burrs or burr shaft, etc., can be flat grinding rasp to prevent injuries when installing oil seal oil seal lip.
(2) Check the oil seal lip without breaking, cracking or oil corrosion damage, if any, of these negative phenomena, should be replaced with new oil seal.
(3) Install oil seal, to prevent oil seal lip 121 is tensile deformation or scratch damage, to adopt special tools for installation. Without this tool can be installed dismount: first shaft portion even in the journal, the volume of the hard layer of transparent plastic film (commonly known as cellophane), cast on its surface a little oil, the oil into the wrapped plastic envelope film first axis, uniform force the seal slowly pushed to the journal, and then pull out the plastic film. Note: Do not put lip installed the wrong direction and should be made toward the inside of the oil being stored, a trademark, specifications side facing outward. Because only one-way sealing lip 1:3, if anti-oil package, will inevitably result in oil leakage, seal weakened or lapsed. To avoid the oil encapsulated crooked or stick with a hammer and other tools in the seal surface Luanqiao hard, or easy to make seals cause injury is.
(4) During the installation process, should maintain seal (especially the lip area) and the journal area clean, and pay attention not to spring out from the tight seal springs outside the tank. If the self-tightening spring relaxation, stretch weakened, depending on the circumstances of its period cut down securely connected to both ends of the head can continue to use.
2 rubber water blocking ring Installation Considerations
Cylinder liner is a water-blocking circle "o" shaped rubber parts, mostly round cross-section, compared with the oil seal, simple structure, neither skeleton, nor self-tightening spring, relying on its own flexibility and rubber elasticity closed . If improperly installed, will make a lot of water jacket cooling water infiltrated the crankcase, causing oil deterioration, lubrication quality deterioration, increased engine wear of the moving parts, and even Burnt axle and other major faults, so when installing water blocking ring should note the following:
(1) If the water blocking ring seal tank too small or too cylinder, the water blocking ring into the seal groove for liner could not certain height above the curved surface, at this time, can be added at the bottom of the seal groove Apply one layer of asbestos rope, coated with water-resistant calcium-based grease, then blocking water trap seal into the groove, and then the body bore cylinder pressure on people.
(2) If the water blocking ring seal tank liner is too thick or too shallow, water blocking ring into the curved face up after too much time not only liner installation difficulties, but also squeeze squeeze even rotten bad rubber seal liner, rubber seal emery cloth evenly polished until it is loaded seal tank after projection height appropriate date. Then grease the surface of the rubber ring can be pressed into the cylinder body bore.
(3) If uneven thickness or water blocking ring seal tank shades, fitted with rubber rings protruding cylinder height after coloring, you should carefully check the problem is the rubber ring, or seal tank problems, will be deposited problematic parts replaced.
(4) into the cylinder in the rubber blocking water trap seal tank before the rubber ring and seal tank should be cleaned, and in the installation into the dirt to avoid impurities. After the rubber ring mounted on the cylinder, carefully check whether there twisting muddy off slot and so on. Liner is installed, you should carefully remove the cylinder upper and lower bearing hole Korea on the dirt, and the next order of hole surface coated with oil, then slowly put pressure on people bearing hole liner.