Parts for your 2014 Mitsubishi Asx-Drive belt pulley

2014 Mitsubishi ASX drive-belt pulley — what it does and when to service it

Technical references confirm the 2014 Mitsubishi ASX does use a drive-belt pulley system. The Mitsubishi ASX/RVR Workshop Manual for 2013–2015 (engine and engine-auxiliary groups), the Mitsubishi ASA electronic parts catalogue, and Australian/New Zealand application catalogues from Dayco and Gates all list an auxiliary/serpentine drive belt, automatic tensioner and idler pulleys for the ASX petrol (4A92/4B11) and diesel (4N13/4N14) engines. With electric power steering on this model, there’s no hydraulic power-steering pump pulley, but there are crankshaft, alternator and air-conditioning compressor pulleys. So yes, a drive-belt pulley is fitted and very relevant on this vehicle.

On the ASX, the drive-belt pulleys transfer the engine’s rotation to essential accessories. The crankshaft pulley (harmonic balancer) drives the belt, the alternator pulley keeps the battery charging and electrics stable, the A/C compressor pulley brings the cold air, and the tensioner and idler pulleys keep belt wrap and alignment in check. Some diesel variants run an overrunning alternator pulley to smooth torsional wobble, which reduces belt noise and improves alternator life.

As part of routine servicing, the belt and pulleys deserve a look under the bonnet at each service or about every 15,000 km. In Aussie and Kiwi conditions, many workshops recommend replacing the auxiliary belt around 90,000–120,000 km or 6 years, sooner if it’s cracked, glazed or noisy. When the belt’s due, it’s smart to replace the tensioner and idler pulleys at the same time, because tired bearings are a common source of squeaks and chirps.

• Tell-tales of trouble: cold-start squeal or chirp, battery warning light, flickering headlights at idle, belt flutter, a/c performance dropping off, or a wobbling/cracked crank pulley rubber.
• Good practice: keep oil and coolant off the belt, use the correct-length multi-rib belt, and check the alternator pulley on diesels for freewheeling in one direction only.
• Fitment tips: follow the belt-routing diagram (decal or workshop manual), use a holding tool for an overrunning alternator pulley, and access is often easiest via the right-hand wheel arch liner. The auxiliary belt is separate from the engine’s timing system.

Look after these pulleys and the ASX will keep charging, cooling and cruising without any fuss.

Popular questions

Do all 2014 ASX models have a drive-belt pulley?
Yes. Petrol and diesel variants use a serpentine belt system with a crankshaft pulley, alternator and A/C compressor pulleys, plus a tensioner and idler. The model uses electric power steering, so there’s no hydraulic power-steering pump pulley.

How often should the belt and pulleys be replaced?
Inspect at every service. Many workshops in Australia and New Zealand target 90,000–120,000 km or about 6 years for the belt, earlier if there’s noise or wear. Tensioner and idler pulleys are commonly replaced with the belt, alternator decoupler pulleys on diesels are replaced when rough or seized.

What are the symptoms of a failing drive-belt pulley on an ASX?
Common signs include cold-start squeals or chirps, battery light on, flickering lights, a/c that isn’t as cold at idle, belt wander, or visible pulley wobble. Any grinding or rumbling from a pulley bearing means it’s time for replacement.