G37x Sedan AWD V6-3.7L (VQ37VHR) (2010)
Valve Clearance: Service and Repair
CAMSHAFT VALVE CLEARANCE
Inspection and Adjustment
INSPECTION
Check valve clearance if applicable to the following cases:
Intake side:
-
At the removal and installation of VVEL ladder assembly or valve-related parts, or at the occurrence of malfunction (poor starting, idle
malfunction, unusual noise) due to aged deterioration in valve clearance.
CAUTION:
Valve clearance check on the intake side is not required after replacing the VVEL ladder assembly and cylinder head assembly with a new
one. (Install new VVEL ladder assembly and cylinder head assembly in factory-shipped condition because it is factory-adjusted and
inspected.)
NOTE:
VVEL ladder assembly cannot be replaced as a single part, because it is machined together with cylinder head assembly.
Exhaust side:
-
At the removal, installation, and replacement of camshaft (EXH) or valve-related parts, or at the occurrence of malfunction (poor starting, idle
malfunction, unusual noise) due to aged deterioration in valve clearance.
1. Remove rocker covers (bank 1 and bank 2). Refer to See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Removal and
Installation.
2. Measure the valve clearance as follows:
-
Use the feeler gauge (commercial service tool) of curved-tip. This allows the feeler gauge to access the clearance between camshaft and valve
lifter with ease.
Valve clearance : Refer to EM-149, "Camshaft". See: Camshaft, Lifters and Push Rods/Camshaft/Specifications
NOTE:
Be sure to note the following points when measuring valve clearance on the intake side.
-
Before measuring, check that the position of drive shaft nose is within the angle shown in the figure.
A : Bank 1
B : Feeler gauge (commercial service tool)
D : View D
c : 45 degrees (drive shaft nose angle)
Black arrow : Insertion direction of feeler gauge on the bank 1