G37x Sedan AWD V6-3.7L (VQ37VHR) (2010)
Measure the end play of a dial indicator when drive shaft is moved forward/backward (in direction of axis).
Standard and limit : Refer to EM-149, "Camshaft". See: Specifications
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Measure the following parts if out of the limit.
- Dimension "A" for drive shaft No. 1 journal
Standard : 27.500 - 27.548 mm (1.0827 - 1.0846 in)
- Dimension "B" for cylinder head No. 1 journal bearing
Standard : 27.360 - 27.385 mm (1.0772 - 1.0781 in)
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If it exceeds the limit, replace VVEL ladder assembly and cylinder head assembly.
NOTE:
Cylinder head assembly cannot be replaced as a single part, because it is machined together with VVEL ladder assembly.
Camshaft Sprocket (INT) Runout
1. Put V-block on precise flat table, and support No. 2 and 4 journals of drive shaft.
CAUTION:
Never support No. 1 journal (on the side of camshaft sprocket) because it has a different diameter from the other three locations.
2. Measure the camshaft sprocket (INT) runout with a dial indicator. (Total indicator reading)
Limit : Refer to EM-149, "Camshaft". See: Specifications
3. If it exceeds the limit, replace camshaft sprocket (INT).
Valve Lifter (INT)
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Check if surface of valve lifter has any wear or crack.
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If wear or crack is found, replace VVEL ladder assembly and cylinder head assembly. Refer to See: Specifications.
NOTE:
Since the valve lifter (INT) cannot be replaced by the piece, VVEL ladder assembly and cylinder head assembly replacement are required.
Valve Lifter Clearance (INT)
VALVE LIFTER OUTER DIAMETER