🔧 Timing Drive - Inspection / Timing Chain Service

Your Land Cruiser does not use a timing belt. It uses a timing chain, which is designed to last the life of the engine under normal conditions. If you’re hearing chain rattle, have cam/crank correlation codes, or internal engine noise, the repair is a major engine timing job, not a routine belt swap.

Difficulty Level: Advanced | Estimated Time: 12-18 hours

---

⚠️ Safety & Precautions

• Disconnect the negative battery cable before starting.
• Allow the engine to cool completely before working near the front cover.
• This repair requires extensive engine disassembly.
• Use jack stands if you raise the vehicle.
• Keep track of timing marks carefully to avoid engine damage.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Metric socket set
• Metric wrench set
• Torque wrench
• Breaker bar
• Harmonic balancer puller (specialty)
• Timing cover seal scraper
• Plastic trim tools
• Drain pan
• Floor jack (rated 3-ton minimum)
• Jack stands
• Safety glasses
• Nitrile gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Timing chain set - Qty: 1
• Timing chain tensioner - Qty: 1
• Timing chain guides - Qty: 1 set
• Front crankshaft seal - Qty: 1
• Timing cover gasket/sealant - Qty: 1
• Valve cover gaskets - Qty: 1 set
• Engine oil - Qty: 8 quarts
• Engine coolant - Qty: 2 gallons

---

📋 Before You Begin

• Park on level ground and set the parking brake.
• Disconnect the negative battery cable.
• Drain the engine oil and coolant before disassembly.
• Label connectors and hoses as you remove them.
• Take photos of timing marks before removal.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Drain fluids and remove front accessories

• Use a drain pan to drain the engine oil and coolant.
• Use the metric socket set and wrench set to remove the air intake ducting, accessory drive belt, alternator connections, and related brackets blocking the front cover.
• Keep fasteners organized by component.

Step 2: Remove crankshaft pulley

• Use a breaker bar and metric socket set to remove the crankshaft pulley bolt.
• Use the harmonic balancer puller (specialty) to remove the pulley from the crankshaft.
• Torque on reassembly: Torque to OEM specification

Step 3: Remove valve covers and front timing cover

• Use the metric socket set to remove the valve covers.
• Use a plastic trim tool and seal scraper to carefully separate the front timing cover from the engine.
• Do not pry against sealing surfaces.

Step 4: Set engine to top dead center

• Rotate the engine by hand with a breaker bar until cylinder 1 is at top dead center on the compression stroke.
• Align all timing marks on the crankshaft and camshaft sprockets.
• Double-check every mark before disassembly.

Step 5: Remove timing components

• Use the metric socket set to remove the timing chain tensioner, guides, and chain.
• Remove the camshaft sprockets only if required by the service procedure.
• Inspect the chain, guides, and tensioner for wear or damage.

Step 6: Install new timing components

• Use the timing chain set to install the new chain with all marks aligned exactly as specified.
• Install new guides and tensioner.
• Torque to OEM specification for all timing fasteners.

Step 7: Seal and reassemble

• Use timing cover sealant/gasket and a torque wrench to reinstall the front cover.
• Install a new crankshaft seal and valve cover gaskets.
• Reinstall the crankshaft pulley and all removed accessories.

Step 8: Refill fluids and verify timing

• Refill engine oil and coolant.
• Reconnect the battery.
• Start the engine and check for leaks, abnormal noise, and warning lights.
• If a scan tool is available, check for cam/crank correlation codes.

---

✅ After Repair

• Run the engine to operating temperature and recheck fluid levels.
• Listen for chain rattle at cold start and idle.
• Inspect the front cover, valve covers, and crank seal for leaks.
• Clear any stored diagnostic codes if present.

---

💰 DIY vs Shop Cost

Shop Cost: $2,500-$5,000 (parts + labor)

DIY Cost: $450-$1,200 (parts only)

You Save: $2,050-$3,800 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 12-18 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.