Suzuki Engine 2002 GRAND VITARA SQ625, Руководство по обслуживанию

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6A1-46 ENGINE MECHANICAL (G16 ENGINE)
Valves
• Remove all carbon from valves.
• Inspect each valve for wear, burn or distortion at its face and
stem and, as necessary, replace it.
• Measure thickness of valve head. If measured thickness
exceeds limit, replace valve.
Valve head thickness
• Inspect valve stem end face for pitting and wear. If pitting or
wear is found there, valve stem end may be resurfaced, but
not so much as to grind off its chamfer. When it is worn so
much that its chamfer is gone, replace valve.
• Seating contact width :
Create contact pattern on each valve in the usual manner,
i.e., by giving uniform coat of marking compound to valve
seat and by rotatingly tapping seat with valve head. Valve
lapper (tool used in valve lapping) must be used.
Pattern produced on seating face of valve must be a continu-
ous ring without any break, and the width of pattern must be
within specified range.
Standard seating width revealed by contact pattern on
valve face
Intake and exhaust : 1.1 – 1.3 mm (0.0433 – 0.0511 in.)
Standard Limit
Intake 0.8 – 1.2 mm
(0.032 – 0.047 in.)
0.6 mm (0.023 in.)
Exhaust 0.7 mm (0.027 in.)
1. Valve head thickness
2. 45°