How to check the rocker arm assembly of cement concrete mixer?
When disassembling the rocker arm assembly, attention should be paid to the serial number of each rocker arm, the installation direction and position of rocker shaft, so as to avoid the wrong installation position. When cleaning the rocker arm assembly parts, pay attention to clean the inside of the rocker shaft and ensure that all oil holes are unobstructed. After the rocker arm assembly is disassembled, the main inspection is as follows.
(1) Check the wear condition of the spherical contact part of the rocker arm. If there is slight wear groove mark, the oilstone or polishing machine can be used for grinding. If the wear is serious, the rocker arm should be replaced.
(2) For the rocker arm with valve clearance adjustment screw, check whether the adjusting screw, lock nut and screw hole on the rocker arm are in good condition. If there is any damage, replace it.
(3) Check the bearing of floating rocker arm with rolling bearing, and replace the rocker arm if it is seriously worn or damaged.
(4) For the rocker arm installed on the rocker arm shaft, measure the inner diameter of the rocker arm bushing and the outer diameter of the rocker shaft, and check the fit clearance of the device. If the maintenance exceeds the allowable limit, the parts or assembly should be replaced.
(5) Check the complete deformation of the rocker arm. If it exceeds the allowable limit, correct or replace the rocker shaft.
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