Mazda LF - Cylinder Head Inspection; Valve, Valve Guide Inspection

B–12
ENGINE
CYLINDER HEAD INSPECTION
A6E242410100E01
1. Carry out color contrast penetrate examination on the cylinder head surface.
• Replace the cylinder head if necessary.
2. Inspect for the following and repair or replace if necessary.
(1) Sunken valve seats
(2) Excessive camshaft oil clearance and end play
3. Measure the cylinder head for distortion in the six
directions as shown.
• If the distortion exceeds the maximum,
replace the cylinder head.
Maximum distortion:
0.10 mm {0.004 in}
4. Measure the manifold contact surface distortion
as shown.
• If the distortion exceeds the maximum, grind
the surface or replace the cylinder head.
Maximum distortion:
0.10 mm {0.004 in}
Maximum grinding:
0.15 mm {0.006 in}
End Of Sie
VALVE, VALVE GUIDE INSPECTION
A6E242412111E01
1. Measure the valve head margin thickness of each
valve.
• If not specified, replace the valve.
Margin thickness:
IN: 1.62 mm {0.0637 in}
EX: 1.82 mm {0.0716 in}
2. Measure the length of each valve. Replace the
valve if necessary.
• If not specified, replace the valve.
Standard length L:
IN: 102.99—103.79 mm {4.055—4.086 in}
EX: 104.25—105.05 mm {4.105—4.135 in}
Minimum length L:
IN: 102.99 mm {4.055 in}
EX: 103.79 mm {4.086 in}
AME2224E317
AME2224E318
AME2224E070
AME2224E071
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