Parts for your 2001 Daihatsu Gran move-Drive belt tensioner

2001 Daihatsu Gran Move drive-belt tensioner — is it actually a thing?

Short answer: a conventional spring-loaded drive-belt tensioner isn’t fitted to the 2001 Daihatsu Gran Move (G30# series, often known as Pyzar in some markets). Technical references that spell this out include the Daihatsu G300-series Workshop Manual (Engine Mechanical – Drive Belt procedures), the Daihatsu Electronic Parts Catalogue for G301/G303 models (Belt & Pulley group), and common aftermarket catalogues (e.g., Gates/Dayco listings for Gran Move auxiliary belts). These sources show individual V-belts and an adjustable idler for the A/C, with belt tension set by moving the alternator or power-steering pump on their sliding mounts. There’s no spring-loaded “tensioner assembly” in the accessory drive.

Why Daihatsu didn’t use a tensioner on this model comes down to design philosophy and packaging. The 1.5-litre SOHC engine of the era uses separate auxiliary belts rather than a single serpentine belt. Tension is adjusted manually via the alternator and power-steering brackets, and the A/C belt uses a simple adjustable idler. It keeps the layout compact, inexpensive, and easy to service with basic tools — very much in keeping with late-90s/early-00s Daihatsu engineering.

What does that mean for owners and techs? When people search for a “drive-belt tensioner” for a 2001 Gran Move, what they often need instead is one or more of the following:

• New auxiliary belts (alternator, power steering, and A/C as fitted)
• The A/C idler pulley or its bearing (if noisy)
• Bracket hardware (pivot/adjuster bolts) if worn or seized

During routine servicing under the bonnet, the belt condition and tension should be checked and adjusted. Tension is set by loosening the relevant pivot and lock bolts, using the adjuster to set tension, then re-tightening to spec. If an A/C chirp or alternator squeal is present after rain or on start-up, it’s more likely a loose or glazed belt rather than a failed “tensioner”. Always follow the factory spec for deflection and torque values in the workshop manual.

Popular questions

Does a 2001 Daihatsu Gran Move have a drive-belt tensioner?
No. The Gran Move uses manually adjusted accessory mounts and an adjustable A/C idler, not a spring-loaded automatic tensioner. This is confirmed by the Daihatsu G300-series Workshop Manual procedures and the Daihatsu EPC, which list belts and an idler but no tensioner assembly.

How do you set the belt tension on a 2001 Gran Move?
Loosen the pivot and lock bolts on the alternator or power-steering pump, use the adjuster to set tension, then tighten everything to spec. The A/C belt tension is set via its adjustable idler. Check belt deflection against the factory figure in the workshop manual and recheck after a short drive.

What parts get replaced instead of a tensioner on this model?
Typically the auxiliary belts and, if noisy, the A/C idler pulley/bearing. If adjustment is difficult, inspect the brackets and adjuster bolts for corrosion or damage and replace as needed.