CYLINDER HEAD
90-828631R3 MARCH 1999 Page 4A-33
Valve Seat Reconditioning
Clean the carbon deposits from the combustion chambers and valve seats and check for
pitting.
Several different types of equipment are available for reseating valve seats. Follow the
equipment manufacturer’s instructions.
Measure valve seat width (a). Resurface the valve seat If not in specification.
55799
a
Valve Seat Width Specification “a”
Intake Valve
0.035 - 0.043 in. (0.9 - 1.1 mm)
Exhaust Valve
If resurfacing the valve seats is required, resurface the valve seats to the specified angles
shown in chart.
55798
a
b
c
Valve Seat Angle Specifications
a 15°
b 45°
c 60°
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