🔧 Outback - Timing Drive Inspection

Your Outback does not use a timing belt. The 2.5L flat-4 engine uses an internal timing chain, which is designed to last much longer and is not a normal maintenance replacement item like a belt.

If you are hearing chain rattle, have cam/crank correlation codes, oil leaks from the timing cover, or poor running, this becomes an advanced engine repair involving front timing cover removal and timing chain service.

Difficulty Level: Advanced | Estimated Time: 8-12 hours

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⚠️ Safety & Precautions

• ⚠️ This is not a beginner timing belt job because your Outback has a timing chain, not an external belt.
• ⚠️ Incorrect camshaft or crankshaft timing can cause severe engine damage.
• ⚠️ Let the engine cool fully before working near the radiator, coolant, exhaust, or timing cover.
• ⚠️ Disconnect the negative battery cable before removing engine accessories.
• ⚠️ Support the vehicle securely if raised. Never rely on a jack alone.
• ⚠️ The front timing cover is sealed with RTV sealant, which is a liquid gasket that cures after assembly.

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🔧 Required Tools

You'll need the following tools for this repair:

• Metric socket set 8mm-22mm
• 3/8-inch drive ratchet
• 1/2-inch drive ratchet
• 1/2-inch drive breaker bar
• Torque wrench 5-80 ft-lbs
• Torque wrench 50-250 ft-lbs
• Metric wrench set 8mm-19mm
• Phillips screwdriver #2
• Flat blade screwdriver
• Trim clip removal tool
• Plastic scraper
• Harmonic balancer puller (specialty)
• Crankshaft pulley holding tool (specialty)
• Engine support bar (specialty)
• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Drain pan 10-quart minimum
• Coolant funnel kit
• Shop towels
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Timing chain kit - Qty: 1
• Timing chain guides - Qty: 1 set
• Timing chain tensioner - Qty: 1
• Front timing cover RTV sealant - Qty: 1
• Front crankshaft seal - Qty: 1
• Water pump gasket - Qty: 1
• Engine coolant - Qty: As needed
• Engine oil - Qty: As needed if contaminated or drained
• Oil filter - Qty: 1 if oil is changed
• Accessory drive belt - Qty: 1 if worn or cracked

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📋 Before You Begin

• Park your Outback on level ground and let the engine cool completely.
• Set the parking brake and place wheel chocks behind the rear wheels.
• Disconnect the negative battery cable using a 10mm socket.
• Take pictures before removing hoses, wiring clips, brackets, and covers. This helps a lot during reassembly.
• Label bolts by location. Subaru uses many similar-looking bolts with different lengths.
• Assumption: This procedure describes timing chain service because your Outback does not have a timing belt.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the lower engine cover

• Raise the front of your Outback with a floor jack rated 2-ton minimum.
• Place the vehicle securely on jack stands rated 2-ton minimum.
• Use a trim clip removal tool and 10mm socket to remove the lower splash shield fasteners.
• Set the shield aside.
• Keep clips grouped by panel.

Step 2: Drain the coolant

• Place a 10-quart drain pan under the radiator drain area.
• Use nitrile gloves and safety glasses before opening the cooling system.
• Open the radiator cap only when the engine is cold.
• Drain the coolant into the pan.

Step 3: Remove intake ducting and accessory belt access parts

• Use a flat blade screwdriver to loosen the intake hose clamp.
• Use a 10mm socket to remove intake duct and air box fasteners as needed.
• Move the intake ducting out of the work area.

Step 4: Remove the accessory drive belt

• Use the correct socket from your metric socket set 8mm-22mm on the belt tensioner.
• Rotate the tensioner slowly to release belt tension.
• Slide the belt off the pulleys by hand.
• Inspect the belt. Replace it if cracked, glazed, or noisy.

Step 5: Remove the crankshaft pulley

• Install the crankshaft pulley holding tool. This tool keeps the pulley from turning while you loosen the center bolt.
• Use a 1/2-inch drive breaker bar and the correct socket from your metric socket set 8mm-22mm to loosen the crank pulley bolt.
• Use a harmonic balancer puller if the pulley does not slide off by hand. A harmonic balancer puller removes the crank pulley evenly without prying.
• Do not pry against the timing cover.

Step 6: Support the engine

• Position an engine support bar across the upper engine bay if an engine mount or bracket blocks cover removal.
• Lightly support the engine according to the support bar instructions.
• Use a metric socket set 8mm-22mm and metric wrench set 8mm-19mm to remove any brackets blocking the timing cover.

Step 7: Remove front timing cover bolts

• Use 8mm, 10mm, 12mm, and 14mm sockets as needed to remove the timing cover bolts.
• Lay the bolts on cardboard in the same pattern as the cover. This prevents mixing bolt lengths.
• Use a plastic scraper only at safe pry points to separate the cover.
• Do not gouge the aluminum sealing surfaces.

Step 8: Set the engine to timing alignment

• Use a 1/2-inch drive ratchet and crankshaft socket to rotate the engine clockwise only.
• Align the crankshaft and camshaft timing marks before removing the chain.
• Take clear photos of all timing marks.
• Do not rotate the crankshaft or camshafts independently once the chain is removed.

Step 9: Remove the timing chain tensioner and guides

• Use the correct socket from your metric socket set 8mm-22mm to remove the timing chain tensioner bolts.
• Remove the chain guides with a metric socket set 8mm-22mm.
• Remove the timing chain carefully from the sprockets.
• Keep all parts laid out in removal order.

Step 10: Install the new timing chain components

• Match the colored timing chain links to the camshaft and crankshaft timing marks.
• Install the new guides using a metric socket set 8mm-22mm.
• Install the new tensioner using a metric socket set 8mm-22mm.
• Tighten guide and tensioner fasteners to Subaru service specifications for your exact fastener size.
• Torque values vary by guide location and bolt diameter; do not guess.

Step 11: Verify timing before sealing the cover

• Use a 1/2-inch drive ratchet to rotate the crankshaft clockwise two full revolutions by hand.
• Stop immediately if you feel hard resistance.
• Recheck that camshaft and crankshaft marks return to proper alignment.
• If marks are off, remove the chain and correct the alignment before continuing.

Step 12: Clean and reseal the timing cover

• Use a plastic scraper to remove old RTV from the timing cover and engine block surfaces.
• Wipe the surfaces clean with shop towels.
• Apply the correct front timing cover RTV sealant in the factory bead path.
• Install the cover within the sealant working time.
• Use a metric socket set 8mm-22mm to snug the bolts evenly.
• Torque timing cover bolts to Subaru service specifications by bolt size and location.

Step 13: Reinstall the crankshaft pulley

• Slide the crankshaft pulley onto the crankshaft by hand.
• Install the pulley bolt using a 1/2-inch drive ratchet.
• Hold the pulley with the crankshaft pulley holding tool.
• Use a torque wrench 50-250 ft-lbs to tighten the crankshaft pulley bolt to Subaru specification.
• Torque to the Subaru factory crank pulley specification for your Outback.

Step 14: Reinstall the accessory belt and intake parts

• Route the accessory belt around the pulleys by hand.
• Use the correct socket from your metric socket set 8mm-22mm to rotate the tensioner.
• Release the tensioner slowly onto the belt.
• Use a flat blade screwdriver and 10mm socket to reinstall the intake ducting and air box fasteners.

Step 15: Refill coolant and reinstall the lower cover

• Use a coolant funnel kit to refill the cooling system with the correct coolant.
• Use a 10mm socket and trim clip removal tool to reinstall the lower splash shield.
• Lower the vehicle safely with the floor jack rated 2-ton minimum.

Step 16: Reconnect the battery

• Use a 10mm socket to reconnect the negative battery cable.
• Make sure the terminal is snug and does not rotate by hand.

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✅ After Repair

• ✅ Let RTV cure according to the sealant instructions before starting the engine if required.
• ✅ Start the engine and listen for abnormal chain noise, knocking, or scraping.
• ✅ Check for oil leaks around the timing cover and crank seal.
• ✅ Run the heater on warm and bleed air from the cooling system using the coolant funnel kit.
• ✅ Watch the temperature gauge closely during the first warm-up.
• ✅ Recheck coolant level after the engine cools completely.
• ✅ If the check engine light comes on, scan for camshaft/crankshaft correlation codes before driving.

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💰 DIY vs Shop Cost

Shop Cost: $1,800-$3,000+ parts + labor

DIY Cost: $350-$900 parts only

You Save: $1,200-$2,100 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 8-12 hours.

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🎯 Ready to get started?

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