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John Deere约翰迪尔强鹿柴油发动机气缸盖阀凹槽与气门的测量与技术参数
详细描述
John Deere约翰迪尔强鹿柴油发动机气缸盖阀凹槽与气门的测量与技术参数
Measure and record valve recess (A) using a depthmicrometer, magnetic base dial indicator or a dial indicatorwith JDG451 or KJD10123 Height Gauge (B).Measurements must be made a maximum of 3.0 mm(0.12 in.) in from edge of valve head.
Specification
Intake Valves—Recess inCylinder Head 0.61—1.11 mm(0.024—0.044 in.)
Wear Limit ................................................................. 1.63 mm (0.064 in.)
Exhaust Valve—Recess in
Cylinder Head 1.22—1.72 mm(0.048—0.068 in.)
Wear Limit .................................................................. 2.26 mm (0.089 in.)
Install new valves and inserts, or grind existing valves andinserts, as necessary, to obtain proper valve recess. Grindvalve seat inserts as required. (See REMOVE VALVESEAT INSERTS later in this group.)
A—Valve Recess
B—Dial Indicator
