2018 Jeep Cherokee Timing Belt vs Timing Chain: How to Replace the Serpentine Belt
Clarifies timing chain vs belt and provides step-by-step accessory belt replacement, tools, parts, and safety tips for 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022
2018 Jeep Cherokee Timing Belt vs Timing Chain: How to Replace the Serpentine Belt
Clarifies timing chain vs belt and provides step-by-step accessory belt replacement, tools, parts, and safety tips for 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022
🔧 Cherokee - Timing Belt Clarification
Your Cherokee’s 3.2L V6 does not use a timing belt—it uses a timing chain inside the engine. A timing chain isn’t a normal maintenance item like a belt; it’s only replaced if there’s a confirmed problem (chain stretch, failed guides/tensioner, front cover oil leak repair, etc.).
Difficulty Level: Advanced | Estimated Time: Timing chain: 8-14 hours (shop-level). Accessory belt (common mix-up): 0.5-1.0 hours
⚠️ Safety & Precautions
- 🛑 Let the engine cool fully before working near the radiator/fans.
- 🛑 Keep hands/tools clear of the radiator fan area; fans can run unexpectedly.
- 🛑 If you’ll be working from underneath, support the Cherokee with jack stands on solid ground.
- 🛑 Battery disconnect is not required for the accessory belt, but it’s okay to disconnect the negative terminal if you want extra safety.
🔧 Required Tools
You'll need the following tools for this repair:
- Safety glasses
- Mechanic gloves
- Floor jack (rated 3-ton minimum)
- Jack stands (rated 3-ton minimum)
- Wheel chocks
- 15mm socket
- 3/8" drive ratchet
- 3/8" drive breaker bar
- Trim clip removal tool
- Flashlight
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Accessory drive belt (serpentine belt) - Qty: 1
📋 Before You Begin
- 🧰 Park on level ground and set the parking brake.
- 🧰 Place wheel chocks behind the rear wheels.
- 🧰 If you need underside access, lift the front with a floor jack and support it securely on jack stands.
- 🧰 Take a quick photo (or sketch) of the belt routing before removal. If there’s a belt-routing sticker under the hood, use that.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Confirm what you’re replacing
- Look at the front of the engine with a flashlight.
- If you see an exposed belt that runs around multiple pulleys, that’s the accessory/serpentine belt.
- The timing chain is not visible without major disassembly (front cover removal).
Step 2: Get access to the belt area
- Open the hood and locate the belt on the passenger side/front of the engine.
- If access is tight from above, remove the lower splash shield using a trim clip removal tool (and any fasteners you can remove with your ratchet as equipped).
Step 3: Relieve belt tension (using the tensioner)
- Fit a 15mm socket on the belt tensioner bolt.
- Use a 3/8" drive breaker bar (or 3/8" ratchet) to rotate the tensioner and take tension off the belt.
- Keep fingers clear of pinch points.
Step 4: Remove the old belt
- While holding the tensioner rotated with the breaker bar, slip the belt off the easiest-to-reach pulley (usually a smooth idler).
- Slowly release the tensioner back to rest.
- Remove the belt from the remaining pulleys by hand.
Step 5: Route the new belt
- 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 routing diagram (or your photo).
- Make sure the ribbed side sits fully in the grooves of every ribbed pulley.
Step 6: Re-apply tension and final checks
- Rotate the tensioner again with the 15mm socket and breaker bar.
- Slip the belt over the last pulley, then slowly release the tensioner.
- Re-check every pulley: the belt must be centered and fully seated.
Step 7: Reinstall splash shield (if removed)
- Reinstall the splash shield using the trim clip removal tool to refit clips.
- If the Cherokee is on jack stands, lower it safely using the floor jack.
✅ After Repair
- Start the engine and let it idle for 20–30 seconds.
- Listen for chirping/squealing and watch the belt to confirm it tracks smoothly.
- Turn the A/C on briefly—if the belt is misrouted, you’ll often hear noise immediately.
- If the belt walks off a pulley, shut the engine off and re-check routing and seating.
💰 DIY vs Shop Cost
Shop Cost: $150-$300 (accessory belt parts + labor)
DIY Cost: $30-$80 (parts only)
You Save: $120-$220 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 hours.
🎯 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.











