🔧 Juke - Serpentine Belt Replacement

The serpentine belt drives key accessories like the alternator and A/C. Replacing it is mostly about getting access, releasing the automatic tensioner, swapping the belt, then double-checking the belt is seated correctly on every pulley.

Difficulty Level: Intermediate | Estimated Time: 0.8-1.5 hours

Assumption: Stock accessory drive with A/C (most Juke setups).

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⚠️ Safety & Precautions

• 🧤 Work on a cool engine; hot pulleys can burn you.
• 🧯 Keep hands/tools away from the electric radiator fan; it can turn on unexpectedly.
• 🧱 Support the Juke with jack stands; never rely on a floor jack alone.
• 🔌 Battery disconnect is recommended: remove the negative terminal to prevent accidental starts.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• 21mm socket
• 3/8" drive ratchet
• 3/8" drive breaker bar
• Serpentine belt tool (specialty)
• 14mm socket
• 10mm socket
• Torque wrench (10-200 Nm range)
• Trim clip removal tool
• Flat-blade screwdriver
• Work light
• Mechanic gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Serpentine belt - Qty: 1
• Engine undertray/inner fender liner clips - Qty: 4-10

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📋 Before You Begin

• 🅿️ Park on level ground, shift to 1st gear, and set the parking brake.
• 🧱 Chock the rear wheels with wheel chocks.
• 🔌 Disconnect the battery: use a 10mm socket to remove the negative terminal and move it aside.
• 🗺️ Find the belt routing diagram (often under the hood). If there’s no sticker, take a clear photo of the current routing before removing the belt.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the right-front corner

• Use a floor jack (rated 2-ton minimum) to lift the right-front jack point.
• Place jack stands (rated 2-ton minimum) under a solid support point and lower the Juke onto the stands.
• Give the vehicle a gentle shake to confirm it is stable.

Step 2: Remove the right-front wheel

• Use a 21mm socket and 3/8" drive breaker bar to loosen the lug nuts, then remove them.
• Remove the wheel and set it aside.
• Reinstall later and Torque to 133 Nm (98 ft-lbs).

Step 3: Remove the splash shields for access

• Use a trim clip removal tool and flat-blade screwdriver to remove plastic clips from the inner fender liner access area.
• If an undertray section blocks access, use a 10mm socket to remove the small bolts and lower the panel.
• Bag clips/bolts so nothing gets lost.

Step 4: Locate the belt tensioner and belt routing

• Use a work light to locate the serpentine belt and the automatic tensioner.
• The tensioner is spring-loaded; you rotate it to release belt tension.
• A serpentine belt tool (specialty) is a long, thin handle that fits tight spaces to rotate the tensioner safely.

Step 5: Release tension and remove the old belt

• Install a 14mm socket on the tensioner’s hex/bolt head (common) using a serpentine belt tool (specialty) or 3/8" drive breaker bar (whichever fits best).
• Rotate the tensioner smoothly to relieve belt tension (it will feel strong—this is normal).
• While holding the tensioner, slip the belt off the easiest top pulley you can reach.
• Slowly release the tensioner back to its resting position. Do not let it snap back.
• Remove the belt from the remaining pulleys and pull it out through the wheel well opening.

Step 6: Install the new belt (route first, then tension last)

• Compare the new belt to the old one (length and rib count should match).
• Route the new belt around the pulleys following the under-hood diagram (or your photo).
• Leave one smooth pulley for last (usually the easiest to access) so you can slip the belt on after releasing tension.
• Rotate the tensioner again using the 14mm socket and serpentine belt tool (specialty), then slide the belt onto the last pulley.
• Slowly release the tensioner so it applies tension to the belt.

Step 7: Confirm the belt is seated correctly

• Use a work light to inspect every pulley.
• Make sure the belt ribs sit fully in the grooved pulleys and the belt runs centered on smooth pulleys.
• If the belt is off by even one rib, release the tensioner and correct it now.

Step 8: Reinstall shields, wheel, and reconnect battery

• Reinstall the undertray/liner using the 10mm socket, trim clip removal tool, and any replacement clips as needed.
• Reinstall the wheel and tighten lug nuts snug using a 21mm socket.
• Lower the Juke off the jack stands (rated 2-ton minimum) using the floor jack (rated 2-ton minimum).
• Final-tighten lug nuts with a torque wrench (10-200 Nm range): Torque to 133 Nm (98 ft-lbs).
• Reconnect the battery negative terminal using a 10mm socket.

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✅ After Repair

• 🔍 Before starting, do one last visual check that the belt is fully seated on every pulley.
• 🔊 Start the engine and let it idle for 30-60 seconds. Listen for squealing or slapping noises.
• 👀 Watch the belt briefly (from a safe distance). It should run smooth with no wandering.
• 🛠️ After a short test drive, recheck the belt alignment through the wheel well access area.

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💰 DIY vs Shop Cost

Shop Cost: $180-$350 (parts + labor)

DIY Cost: $35-$90 (parts only)

You Save: $145-$260 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.8-1.2 hours.

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🎯 Ready to get started?

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