🔧 Explorer - Serpentine Belt Replacement

The serpentine belt drives the alternator, water pump, power-steering pump, and air-conditioning compressor on your Explorer. Replacement requires releasing the automatic belt tensioner, removing the old belt, and routing the new belt exactly as shown on the under-hood routing diagram.

Difficulty Level: Beginner | Estimated Time: 1-1.5 hours

---

⚠️ Safety & Precautions

• ⚠️ Let the engine cool completely before working near the belt and pulleys.
• 🛑 Keep the ignition off and the key away from the vehicle while your hands are near the belt.
• 🔒 Never work beneath your Explorer while it is supported only by a floor jack.
• 🧤 The automatic tensioner is spring-loaded. Keep your fingers away from the belt and pulley pinch points.
• 🔋 Battery disconnection is not required for this repair.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 19mm deep socket
• 15mm socket
• 3/8-inch-drive ratchet
• 1/2-inch-drive breaker bar
• Serpentine belt tool with 15mm adapter (specialty)
• 80-150 ft-lb torque wrench
• Automotive trim-clip removal tool
• Floor jack rated 2-ton minimum
• Jack stands rated 2-ton minimum
• Wheel chocks
• LED work light
• Mechanic's gloves
• Safety glasses

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Six-rib serpentine drive belt - Qty: 1

---

📋 Before You Begin

• 🅿️ Park your Explorer on firm, level ground. Shift into Park, apply the parking brake, and switch off the ignition.
• 🧊 Allow the engine to cool completely.
• 📖 Locate the factory belt-routing diagram in the engine compartment and take a clear picture of it. Follow that diagram because every ribbed and smooth pulley must contact the correct side of the belt.
• 🔍 Compare the new belt with the old belt before installation. The rib count and overall length must match.
• 🚫 No infotainment setting, scan-tool command, or battery registration is required.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Secure and Raise the Vehicle

• Place the wheel chocks firmly against the front and rear of the left-rear tire.
• Use the 19mm deep socket and 1/2-inch-drive breaker bar to loosen each right-front wheel nut about one-half turn. Do not remove them yet.
• Use the floor jack rated 2-ton minimum at the specified front jacking point to lift the right-front corner.
• Support your Explorer at the reinforced body support point with a jack stand rated 2-ton minimum. Lower the vehicle gently onto the stand.
• Wear safety glasses and mechanic's gloves throughout the repair.

Step 2: Remove the Right-Front Wheel

• Use the 19mm deep socket and 1/2-inch-drive breaker bar to remove the wheel nuts.
• Remove the right-front wheel and place it flat away from the work area.

Step 3: Open the Belt Access Area

• Use the automotive trim-clip removal tool to release the retainers securing the front section of the right wheel-well splash shield.
• A trim-clip tool is a fork-shaped hand tool that removes plastic retainers without damaging them.
• Move the splash shield aside far enough to see the crankshaft pulley and belt.
• Use the LED work light to illuminate the belt path.
• Keep every clip for reinstallation.

Step 4: Record the Existing Belt Routing

• Use the LED work light to trace the belt around every pulley.
• Compare the installed routing with the factory diagram under the hood.
• Check that the ribbed side of the belt contacts grooved pulleys and the smooth back of the belt contacts smooth pulleys.
• Take a second photo before removing anything.

Step 5: Release Belt Tension

• Fit the serpentine belt tool with 15mm adapter onto the belt-tensioner hex.
• The tensioner is the spring-loaded arm that keeps the belt tight automatically.
• Move the tool slowly to rotate the tensioner away from the belt. Do not force it against its stop.
• While holding the tensioner, slide the belt off the easiest accessible smooth pulley.
• Slowly return the tensioner to its resting position. Never allow it to snap back.

Step 6: Remove and Inspect the Old Belt

• Remove the old belt through the wheel-well opening by hand, noting how it passes around each pulley.
• Use the LED work light to inspect the belt for cracks, missing ribs, shiny glazed areas, frayed edges, or oil contamination.
• Spin each accessible idler pulley by hand. It should turn smoothly without grinding, looseness, or wobble.
• Move the tensioner gently with the serpentine belt tool with 15mm adapter. Replace a noisy, binding, loose, or weak tensioner before installing the belt.

Step 7: Route the New Belt

• Route the new six-rib serpentine drive belt around the pulleys according to the factory under-hood diagram.
• Leave one easy-to-reach smooth pulley until last.
• Use the LED work light to verify that every belt rib sits inside a matching pulley groove.
• Make sure the belt is not twisted and has not slipped behind a pulley.
• One misplaced rib can quickly destroy the belt.

Step 8: Apply Tension to the New Belt

• Use the serpentine belt tool with 15mm adapter to rotate the automatic tensioner away from the belt.
• Slip the belt over the final smooth pulley by hand.
• Slowly release the tensioner until it rests firmly against the belt.
• Remove the belt tool and use the LED work light to inspect every pulley again.
• No belt-tension adjustment or tensioner-bolt tightening is required; the spring-loaded tensioner sets belt tension automatically.

Step 9: Reinstall the Splash Shield

• Position the wheel-well splash shield in its original location.
• Push the retained clips into place by hand, then seat them with the automotive trim-clip removal tool if needed.
• Confirm the shield does not touch the belt or crankshaft pulley.

Step 10: Reinstall the Wheel

• Install the right-front wheel and thread all wheel nuts by hand.
• Use the 19mm deep socket and 3/8-inch-drive ratchet to snug the nuts in a star pattern.
• Use the floor jack rated 2-ton minimum to raise your Explorer slightly, remove the jack stand, and lower the vehicle completely.
• Use the 19mm deep socket and 80-150 ft-lb torque wrench to tighten the wheel nuts in a star pattern: Torque to 135 Nm (100 ft-lbs).
• Remove the wheel chocks.

---

✅ After Repair

• 🔍 Before starting the engine, perform one final visual check that the belt is centered on every pulley.
• ▶️ Start the engine and observe the belt from a safe distance. Keep hands, clothing, tools, and hair away from rotating parts.
• 👂 Shut the engine off immediately if the belt walks sideways, flaps, squeals continuously, or produces a grinding sound.
• 💡 Confirm the battery warning light remains off and the steering assistance and air conditioning operate normally.
• 🛞 Recheck the right-front wheel-nut torque after approximately 80-160 km.

---

💰 DIY vs Shop Cost

Shop Cost: ₹6,000-₹12,000 (parts + labor)

DIY Cost: ₹2,500-₹5,500 (parts only)

You Save: ₹3,500-₹6,500 by doing it yourself!

Local labor rates vary. This repair takes a shop approximately 0.7-1.0 hour.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.