|
|
Cylinder head and valve mechanisms 55 4. Measure the inner diameter of each valve guide, at three points of A, B and C shown in Fig, respectively in the directions X and Y, replace the valve guide when necessary.
Standard I/D
Standard: 5~5.012mm{0.1968~0.1973in}
Extra size: 5.012~5.022mm{0.1973~0.1977in}
5. In absence of lower seat of valve spring, measure the size A, the protrusion height of each valve guide. Replace the valve guide when necessary.
Standard height
At the intake side: 19.8~20.4mm{0.7795~0.8031in}
At the exhaust side: 14.6~15.2mm{0.5748~0.5984in}
Replacement of valve guide Disassembly of valve guide
Use a special tool to press out the valve guide from the side of combustion chamber.
Assembly of valve guide 1. Adjust the special tool, enabling the pressed depth L to meet the requirements.
Depth L
Intake side: 19.8~20.4mm{0.7795~0.8031in}
Exhaust side: 14.6~15.2mm{0.5748~0.5984in} Valve guide tube Cylinder head Valve guide tube puller/installer Valve guide tube |