2011 Infiniti G37 Serpentine Belt Diagram and Routing

The 2011 Infiniti G37 requires a precise serpentine belt setup to ensure optimal engine performance. Refer to the belt diagram to check proper routing and alignment for all related components, including the alternator, power steering pump, and air conditioning compressor. Understanding this layout will help you identify any potential issues, like improper belt tension or wear.
Start by verifying the belt tension. Too much slack or tightness can lead to belt slip or premature failure. Use a belt tension gauge to ensure the correct tension level. If the belt is worn or cracked, it’s best to replace it to prevent breakdowns.
Check the diagram for correct routing as an incorrect path can strain the components and cause engine performance issues. The diagram will show you the precise path the belt should follow over pulleys. Always make sure the belt follows this path without any deviations to avoid damage to other engine parts.
2011 Infiniti G37 Belt Diagram
Refer to the diagram for the correct routing of the serpentine belt on the 2011 Infiniti G37. The diagram shows how the belt interacts with various components such as the alternator, power steering pump, and air conditioning compressor.
Steps to verify correct belt routing: Start by checking the alignment of the belt with the pulleys. Ensure the belt is seated properly in each groove, particularly around the tensioner and idler pulley.
The 2011 Infiniti G37 uses a single serpentine belt to drive multiple accessories. Make sure to check for any wear signs, like cracks or fraying, as these can lead to premature belt failure. If the belt appears worn, replace it with an OEM or recommended aftermarket part.
Important maintenance tip: Always check the belt tension after installation. Over-tightening or under-tightening can lead to damage in both the belt and pulleys, affecting engine performance and accessory function.
If you’re unsure about the belt’s condition or installation, it’s advisable to seek professional assistance to avoid potential issues with engine components. Regular belt inspections will help ensure the longevity of the system.
Identifying Components in the 2011 Infiniti G37 Belt System

The 2011 Infiniti G37’s belt system includes a serpentine belt and several key components that work together to power various engine accessories. Start by locating the serpentine belt, which is the main drive belt running from the crankshaft pulley. It powers the alternator, air conditioning compressor, power steering pump, and water pump, among other components.
The crankshaft pulley serves as the starting point for the belt, providing the initial rotational force. Next, the belt wraps around the tensioner pulley, which maintains the correct tension to prevent slipping. If the tension is too low, the belt might not engage properly, leading to loss of power to crucial components.
Located nearby, the idler pulley helps guide the belt and maintains alignment across the system. The air conditioning compressor pulley is another vital component, enabling the belt to power the A/C system when needed. The alternator pulley connects to the alternator, ensuring the vehicle’s electrical system stays charged.
Pay attention to the power steering pump pulley as well, as it ensures smooth steering while driving. Lastly, the water pump pulley is crucial for circulating coolant through the engine. Inspecting these components regularly will help maintain the functionality of the entire belt system and prevent costly repairs.
Step-by-Step Guide to Replacing the Serpentine Belt on 2011 Infiniti G37
Begin by lifting the front of the vehicle using a jack and securing it with jack stands. Make sure the engine is off and the vehicle is in park.
Next, locate the serpentine belt tensioner. Using a socket wrench, rotate the tensioner clockwise to relieve tension from the belt. Remove the belt from the pulleys carefully, ensuring that you don’t damage any components.
Before installing the new serpentine belt, compare it with the old one to ensure the correct size. Lay the new belt out in the correct path according to the diagram found in the vehicle’s manual.
Start placing the new belt onto the pulleys one by one, following the correct routing. Ensure the belt is properly seated in all the grooves of the pulleys.
Once the belt is properly in place, rotate the tensioner again to allow the new belt to fit tightly. Double-check the alignment to ensure the belt is snug and evenly routed.
Lower the vehicle back down to the ground and test the belt by starting the engine. Listen for any unusual sounds, indicating improper installation. If everything sounds normal, the replacement is complete.
Troubleshooting Common Belt Issues in the 2011 Infiniti G37

If you notice unusual noises, such as squeaking or chirping, from the engine bay, the serpentine belt may be the issue. Check for any visible wear or cracks on the belt surface. A damaged belt can slip off or cause components to malfunction.
Another common issue is belt tension. If the belt feels loose or misaligned, inspect the tensioner pulley. It may need to be replaced or adjusted to ensure proper belt tension. A misaligned belt can lead to further damage to other engine components.
Over time, the belt can stretch and lose its effectiveness. If the belt is more than five years old, it’s a good idea to inspect it regularly or replace it proactively to avoid unexpected failures.
Finally, ensure that all pulleys are in good condition. A damaged pulley can cause the belt to wear unevenly, leading to premature failure. Check the pulleys for any cracks, wear, or resistance when turning them by hand. Replace any faulty pulleys immediately to prevent damage to the belt and engine components.