Parts for your 2002 Daihatsu Gran move-Drive belt tensioner

2002 Daihatsu Gran Move drive-belt tensioner — is one actually fitted?

Short answer: no, an automatic drive-belt tensioner isn’t used on the 2002 Daihatsu Gran Move (also known as the Pyzar in some markets). Technical sources for the HC‑EJ and HD‑EP engines fitted to the Gran Move show a traditional multi-belt setup where tension is set manually via the alternator and power-steering brackets, plus an adjustable idler for the A/C. There’s no spring-loaded serpentine tensioner pulley in this system.

Why’s that the case? It comes down to the design era and the engine family. Daihatsu’s HC/HD engines use individual accessory belts (alternator/water pump, power steering if equipped, and A/C). Tension is applied by sliding the alternator and power-steering pump along slotted brackets (with a jack/adjuster bolt), and by turning an adjuster on the A/C idler pulley. That means the “drive-belt tensioner” people think of today—the automatic, spring-loaded unit—simply isn’t part of the Gran Move’s accessory drive.

Relevant technical references: the Daihatsu Pyzar/Gran Move workshop manual for the L7x series (Engine Mechanical/Maintenance sections) details belt tension checks and shows adjustment by moving the alternator and power-steering pump, and by adjusting the A/C idler—no automatic tensioner is specified. Aftermarket catalogues for Australia and New Zealand (Gates Micro-V/DriveAlign and Dayco accessory drive listings for Gran Move/Pyzar, HC‑EJ/HD‑EP engines) list belts but no accessory-drive automatic tensioner part for this model/year.

What should owners do instead? Just treat belt condition and manual tension checks as part of routine servicing. A quick once-over each service goes a long way:

• Inspect for cracks, glazing, fraying, or contamination (oil/coolant).
• Check deflection/tension per the workshop specs, adjust via alternator, P/S pump, or A/C idler as applicable.
• Avoid overtightening—too tight can knock out alternator, water pump or idler bearings.

Typical symptoms that call for attention include a squeal at cold start or when wet, flickering charge light at idle, heavy steering (if P/S belt slips), or A/C belt chirp when the compressor kicks in. Belts are inexpensive, if they’re aged, noisy or cracked, replace them as a set. As a rough guide, many techs in AU/NZ aim for around 40,000–60,000 km or four years, but always use the service manual and the belt maker’s guidance for the final word.

Does a 2002 Daihatsu Gran Move have an automatic drive-belt tensioner?

No. Technical sources show the Gran Move (HC‑EJ/HD‑EP engines) uses manually adjusted accessory belts. Tension is set via the alternator and power-steering bracket sliders, and an adjustable idler for the A/C, not a spring-loaded automatic tensioner.

How do you adjust the accessory belt tension on a 2002 Gran Move?

With the engine off, loosen the alternator pivot and lock bolts, use the adjuster/jack bolt to set tension, then retighten. For power steering, loosen the pump bracket and adjust similarly. For A/C, loosen the idler pulley lock bolt and turn the adjuster to set tension. Check deflection to the spec in the workshop manual and don’t overtighten.

What maintenance is recommended if there’s no tensioner?

Inspect each belt every service for cracks, glazing or fraying and check tension/deflection. Replace belts every 40,000–60,000 km or four years, or sooner if noisy or contaminated with oil/coolant. Correct tension prevents squeal, charging issues and bearing overload.