2020年8月18日（火）
Rotate the inner seat ring to check whether the rotation is smooth
This method can also check the degree of wear of the big end of the connecting rod. Excessive crankshaft yaw is often the cause of abnormal engine vibration, which will shorten the life of the engine. If the steel ball and seat ring have serious pitting, peeling, cracking, etc. When checking the big end bearing of the connecting rod, turn the crankshaft with the connecting rod, and you should feel that the rotation in the big end is smooth.
Rotate the inner seat ring to check whether the rotation is smooth.After disassembling the engine, check the degree of crankshaft yaw. If it is worn, cracked, or hardened, the damaged oil seal may cause fuel and air mixture or oil leakage.. While tightly fixing the crankshaft, pull the connecting rod up and down to confirm whether there is a sound in the big head. The yaw degree of the crankshaft must not exceed the use limit, and the use limit is 0. If you feel that the shaking gap is large, you should replace the bearing.
Use a V-shaped ring to support the crankshaft, and use a dial indicator to read the yaw degree. If the rotation is not flexible and uniform, and there is a 'Kada, Kada' impact sound, further check the ball track and steel balls.05mm. The inspection method can be to hold the inner and outer rings tightly with both hands and push the bearing back and forth. Before inspecting the bearings, the bearings should be cleaned with a cleaning solvent and 69 Series Ball Bearings
lubricated with engine oil. Next, check the bearing oil seal. If the wear exceeds the limit,
the connecting rod, crank pin and crank pin bearings should all be repaired or replaced. The wear of the big end of the connecting rod can be estimated by checking the swing of the small end of the connecting rod. Therefore, if the limit is exceeded, it should be sent to the repair department for repair or replacement.0mm. The degree of wear shall not exceed 3. If the bearing rotates smoothly and has no blockage, but the noise is loud, you should check for excessive wear. Such oil seals should be replaced., replace the bearing with a new one
Rotate the inner seat ring to check whether the rotation is smooth.After disassembling the engine, check the degree of crankshaft yaw. If it is worn, cracked, or hardened, the damaged oil seal may cause fuel and air mixture or oil leakage.. While tightly fixing the crankshaft, pull the connecting rod up and down to confirm whether there is a sound in the big head. The yaw degree of the crankshaft must not exceed the use limit, and the use limit is 0. If you feel that the shaking gap is large, you should replace the bearing.
Use a V-shaped ring to support the crankshaft, and use a dial indicator to read the yaw degree. If the rotation is not flexible and uniform, and there is a 'Kada, Kada' impact sound, further check the ball track and steel balls.05mm. The inspection method can be to hold the inner and outer rings tightly with both hands and push the bearing back and forth. Before inspecting the bearings, the bearings should be cleaned with a cleaning solvent and 69 Series Ball Bearings
lubricated with engine oil. Next, check the bearing oil seal. If the wear exceeds the limit,the connecting rod, crank pin and crank pin bearings should all be repaired or replaced. The wear of the big end of the connecting rod can be estimated by checking the swing of the small end of the connecting rod. Therefore, if the limit is exceeded, it should be sent to the repair department for repair or replacement.0mm. The degree of wear shall not exceed 3. If the bearing rotates smoothly and has no blockage, but the noise is loud, you should check for excessive wear. Such oil seals should be replaced., replace the bearing with a new one
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