G37x Sedan AWD V6-3.7L (VQ37VHR) (2010)
Timing Chain: Procedures
TIMING CHAIN
Inspection
INSPECTION AFTER REMOVAL
Timing Chain
Check for cracks and any excessive wear at link plates and roller links of timing chain. Replace timing chain if necessary.
A : Crack
B : Wear
INSPECTION AFTER INSTALLATION
Inspection for Leakage
The following are procedures for checking fluid leakage, lubricant leakage.
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Before starting engine, check oil/fluid levels including engine coolant and engine oil. If any are less than the required quantity, fill them to the
specified level. Refer to See: Maintenance.
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Follow the procedure below to check for fuel leakage.
- Turn ignition switch to the "ON" position (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leakage at connection
points.
- Start engine. With engine speed increased, check again for fuel leakage at connection points.
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Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a pounding noise during and just after the
engine start. However, this does not indicate a malfunction. The noise will stop after hydraulic pressure rises.
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Warm up engine thoroughly to check that there is no leakage of fuel, or any oil/fluids including engine oil and engine coolant.
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Bleed air from lines and hoses of applicable lines, such as in cooling system.
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After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill them to the specified level, if necessary.