HAIMA 7 - Replacement of Valve Guide; Disassembly of Valve Guide; Assembly of Valve Guide

Cylinder head and valve mechanisms
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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