FX45 AWD V8-4.5L (VK45DE) (2006)
1. Measure the camshaft cam height with micrometer.
Standard cam height
Intake 44.865 - 45.055 mm (1.7663 - 1.7738 inch)
Exhaust 43.925 - 44.115 mm (1.7293 - 1.7368 inch)
Cam wear limit: 0.2 mm (0.008 inch)
2. If wear exceeds the limit, replace camshaft.
Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL DIAMETER
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Measure the outer diameter of camshaft journal with micrometer.
Standard:
No. 1 25.938 - 25.955 mm (1.0212 - 1.0218 inch)
No.2, 3, 4: 25.953 - 25.970 mm (1.0218 - 1.0224 inch)
CAMSHAFT BRACKET INNER DIAMETER
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Tighten camshaft bracket bolt with the specified torque.
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Measure the inner diameter A of camshaft bracket with bore gauge.
Standard: 26.000 - 26.021 mm (1.0236 - 1.0244 inch)
CAMSHAFT JOURNAL OIL CLEARANCE
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(Oil clearance) = (Camshaft bracket inner diameter) - (Camshaft journal diameter).
Standard:
No. 1 0.045 - 0.083 mm (0.0018 - 0.0033 inch)
No.2, 3, 4: 0.030 - 0.068 mm (0.0012 - 0.0027 inch)
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If the calculated value out of the standard, replace either or both camshaft and cylinder head.
NOTE: Camshaft bracket cannot be replaced as a single part, because it is machined together with cylinder head. Replace whole cylinder head
assembly.
Camshaft End Play