2015 Ford Explorer serpentine belt diagram with routing and tensioner details
Check the serpentine belt routing before starting any replacement on a 2015 Ford Explorer. The belt connects the alternator, power steering pump, water pump, and air conditioning compressor, and incorrect alignment can damage pulleys or cause slipping. Always refer to the diagram under the hood or keep a printed version nearby for quick reference.
The 2015 Explorer uses a single serpentine belt system with automatic tension adjustment. Locate the tensioner pulley on the passenger side and use a breaker bar to release tension before removing the belt. This step prevents strain on components and makes installation smoother. A new belt should follow the exact path shown in the diagram without skipping any pulley grooves.
Inspect the old belt for cracks, glazing, or fraying, as these issues often indicate pulley misalignment or excessive heat. After installing the new belt, rotate the crankshaft manually to confirm proper seating on all pulleys. A precise match with the diagram ensures reliable performance and avoids premature wear.
2015 Ford Explorer Belt Diagram
Check the routing of the serpentine belt on the 2015 Ford Explorer before removing the old belt. The diagram shows the belt looping around the crankshaft pulley, alternator, power steering pump, A/C compressor, and the idler pulleys. Following the exact path is necessary to prevent misalignment.
Locate the tensioner pulley on the passenger side and use a wrench to rotate it clockwise. This action releases pressure and allows you to slip the belt off. When installing the new belt, follow the diagram carefully and confirm that each ribbed section matches the grooves on the pulleys.
After routing, double-check alignment across all pulleys and slowly release the tensioner to apply pressure. A misrouted belt can cause squealing, accessory malfunction, or premature wear. Keep the diagram accessible near the engine bay for easier reference during maintenance.
Serpentine Belt Routing for 2015 Ford Explorer Engines
Check the engine type before routing the serpentine belt, as the 2015 Ford Explorer uses different layouts for the 2.0L EcoBoost, 3.5L V6, and 3.5L EcoBoost engines. Incorrect routing can cause tension issues and accessory failure.
For the 2.0L EcoBoost, route the belt around the crankshaft pulley, then follow it to the A/C compressor, idler pulley, alternator, and finish at the tensioner. The belt must sit fully in the grooves of each pulley to prevent slippage.
On the 3.5L V6, run the belt from the crankshaft to the water pump, then around the A/C compressor, alternator, and power steering pump, ending at the automatic tensioner. Double-check alignment at the water pump, as this pulley sits higher and can cause misrouting.
The 3.5L EcoBoost configuration differs slightly, routing the belt from the crankshaft to the alternator, then across the water pump, A/C compressor, and power steering pulley before finishing at the tensioner. Use a breaker bar on the tensioner to install the belt smoothly without overstretching it.
After routing, rotate the crankshaft manually with a socket to verify that the belt runs straight on all pulleys. Listen for squealing on startup, which may indicate misalignment or a weak tensioner that should be replaced together with the belt.
How to Identify Pulleys and Tensioner in the Belt Path
Locate the crankshaft pulley at the bottom of the engine bay, as it is the largest wheel driving the serpentine belt. Use it as a starting point to trace the belt path upward.
Identify the alternator pulley near the top of the engine; it usually has cooling vents and connects directly to the alternator body. Follow the belt further to spot the power steering pulley, which is slightly smaller and mounted closer to the firewall.
Look for the idler pulleys; they are smooth wheels that guide the belt without powering accessories. These pulleys are often placed between larger components to maintain belt alignment.
Find the automatic tensioner by checking for a spring-loaded arm with a pulley at its end. The tensioner pulley typically has a smooth surface and presses against the belt from the outside, keeping it tight during operation. A square hole or bolt head on the tensioner arm allows tool placement for releasing belt pressure.
Confirm pulley identification by gently rotating each with the belt removed. Accessory pulleys like the alternator or power steering will show resistance, while idlers and the tensioner pulley spin freely without engaging components.
Steps to Check and Replace the Serpentine Belt
Inspect the belt by looking for cracks, fraying, or missing ribs along its surface. Check the tension by pressing on the longest stretch of the belt; it should not move more than half an inch. If the belt looks worn or feels loose, plan for replacement.
Prepare the vehicle by parking on a level surface, turning off the engine, and disconnecting the negative battery cable. Locate the belt diagram under the hood or keep a printed version nearby to guide the routing process.
- Insert a breaker bar or ratchet into the tensioner pulley slot and rotate it to relieve belt tension.
- Slide the belt off the pulleys while holding the tensioner in position, then slowly release it back.
- Compare the old belt with the new one to ensure matching length and rib count.
- Route the new belt according to the diagram, leaving the tensioner pulley for last.
- Rotate the tensioner again, slip the belt over the final pulley, and release it slowly to apply tension.
- Double-check the belt alignment across all pulleys to confirm correct seating on the ribs.
After installation, reconnect the battery and start the engine. Observe the belt while running to verify smooth operation without noise or wobbling.