Outlander (CW) 6B31 timing belt — MITSUBISHI
Outlander (CW) 6B31 timing belt on Mitsubishi: 107 steps, engines 6B31. What to remove, in what order, and what to check after.
Changing the timing belt on the Mitsubishi Outlander (CW) with the 6B31 3.0 MIVEC V6 is a long job, mostly because of what sits in the way. The ancillary belts, engine support and bracket, crankshaft pulley and timing covers all have to come off with the crank held by the locking tool. The new belt is fitted anti-clockwise with the belt marks matched to the sprocket marks and tension kept on the run, then the automatic tensioner is released. Setting it properly is the critical part: turn the crank as specified, pull the tensioner pin, rotate by 2 turns, wait 5 minutes and measure the tensioner. Never turn the engine backwards, and track the crankshaft pulley bolts, which can only be used 3 times.
🧭 Before you start
Remove the power steering and alternator belts, the engine support and bracket, the crankshaft pulley and the timing covers. Align the crankshaft timing marks and remove the old belt. Fit the new belt anti-clockwise, matching the belt marks to the sprockets and keeping tension on it, then set the automatic tensioner, rotate the engine 2 turns, wait 5 minutes and measure. Recheck the marks, refit the bracket, pulley in stages, covers and ancillary belts, then the arch liner and engine covers.
Fits: platform codes 3.0, MIVEC
- Timing position: the crankshaft or camshaft is set and locked during this job
- Special tools named: locking tool, locking pin
- Renewed: bolts
Don't miss
- Never turn the engine opposite to its normal direction of rotation.
- Align the belt marks with the sprocket marks and keep tension on the belt while fitting.
- After 2 crank turns, wait 5 minutes before measuring the tensioner; adjust and repeat if out.
- Mark the pulley bolts at every removal; they can only be used 3 times.
- Check the belt for cracks, fraying and oil contamination; avoid bending or twisting it.
Written for this job from the workshop steps below · TorqFix editorial.
🔧 Engine codes this applies to
📋 Procedure
Preparation and removal
- Never turn the engine in the direction opposite to that of normal operation
- The bolts must be marked after every removal. Renew the bolts after:
- Crankshaft locking tool:
- Threads lightly oiled
- Check the belt(s) for cracks, fraying, wear and oil contamination
- Remove the power steering pump belt
- Note: Keep tension on the timing belt
- Check the timing marks
- Turn the crankshaft 90° anti-clockwise
- Use the special tool
- Turn the crankshaft clockwise
- Align the timing marks
- Remove the crankshaft pulley
- Note: The bolts can only be used 3 times
- Remove the engine support
- Remove the engine support bracket
- Align the crankshaft timing marks
- Note: Check the alignment
- Remove the timing belt
- Note: The bolts can only be used 3 times
- Note: Use a wrench to counterhold
- Threads lightly oiled
- Stage 1:
- Stage 2:
- Loosen the bolts
- Stage 3:
- Stage 4:
- Turn the tensioner anti-clockwise to release the tension
- Supporting its slack using a hexagonal wrench
- Release the tensioner
- Stage 3:
Installation and checks
- Note: Avoid bending, torsion or traction
- Refit the automatic tensioner
- Fit the timing belt in an anti-clockwise direction
- Align the timing marks on the timing belt with the marks on the gearwheels
- Remove the tensioner locking pin
- Rotate the crankshaft clockwise by 2 turns
- Wait for 5 minutes
- Measure the distance:
- If the tension is not set correctly, adjust the tensioner according to the instructions as above
- Check the timing marks again
- Refit the engine support bracket
- Refit the crankshaft pulley
- Refit the power steering pump drive belt
- Fit the tensioner bracket
- Tension the belt
- Fit the power steering tensioner
- Refit the alternator belt
- Refit the right wheel arch liner
- Refit the engine lower cover
- Refit the engine upper cover
- Reconnect the battery
Other MITSUBISHI procedures
- Mitsubishi Outlander 2.0 Non-Turbo timing belt replacement
- Outlander 2.0 Turbo (4G63)
- Mitsubishi Colt 05 134.9XX 3 cyl 1.1 timing chain replacement
- Mitsubishi Colt 05 134.911 1.5 4G15 timing belt replacement
- Mitsubishi Pajero V60, V70 3.2 DI-D timing chain replacement
- Grandis 2.0 BSY
- Mitsubishi Lancer, Grandis 2.0 D BWC timing belt replacement
- Mitsubishi L200 V6 3.0 6G72 timing belt replacement
- Pajero 2007 6G75 3.8 V6
- Mitsubishi Outlander 2.4 4B12 timing chain replacement
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.