Parts for your 1999 Daihatsu Gran move-Drive belt pulley

1999 Daihatsu Gran Move drive-belt pulley — purpose, care and when to replace

Technical sources confirm the 1999 Daihatsu Gran Move (also known as the Pyzar G3) uses accessory drive belts and pulleys. The Daihatsu Workshop Manual for the Pyzar/Gran Move details adjustment of alternator, power steering and A/C belts and pulleys, Gates Australia and Dayco application catalogues list multiple auxiliary belts and related pulleys for this model year, and Autodata service data covers belt tension and inspection points. So yes — a drive-belt pulley is fitted and relevant on this vehicle.

On a 1999 Gran Move, the drive-belt pulleys do the heavy lifting for everyday running. The crankshaft pulley (harmonic balancer) turns the belts that spin the alternator, power steering pump and air-conditioning compressor. Idler and adjuster pulleys keep belt tension right where it should be. If a pulley drags or wobbles, the belt can slip, squeal or wear fast — and that can knock out charging, steering assist or A/C at the worst time.

As part of normal servicing, it’s smart to pop the bonnet and give the belt runs and pulleys a once-over. Look across the belt ribs for cracking, glazing or frayed edges, and watch each pulley at idle for any wobble. Spin idler and adjuster pulleys by hand with the belt off — they should feel smooth and quiet with no play. A quick listen for bearing growl on cold start can also catch a tired pulley early.

• Typical intervals: inspect every service (10,000–15,000 km), replace belts around 60,000–90,000 km, and replace pulleys on condition (any noise, roughness or misalignment).
• Good practice: whenever a belt is renewed, check all pulleys, whenever a pulley is renewed, fit a fresh belt. Keep belt tension to spec — too tight can cook bearings, too loose will squeal and slip.

Replacement on the Gran Move is straightforward for a competent home mechanic. Sketch the belt routing, back off the adjuster, slip the belt clear, then check each pulley. If a pulley shows noise or play, replace it rather than trying to “lube” it — these bearings are sealed. Align the new pulley carefully, torque fixings to spec, fit the new belt and set tension. After 500–1,000 km, recheck belt tension and listen again. Remember, the timing belt is separate and has its own schedule, the accessory drive-belt pulleys discussed here are on the outside of the engine.

Technical references used: Daihatsu Pyzar/Gran Move Workshop Manual (Engine Mechanical – Drive Belt), Gates Australia online catalogue (auxiliary belts and pulleys for Gran Move/Pyzar, late 1990s), Dayco Australia Application Guide, Autodata service schedules for Daihatsu Gran Move/Pyzar.

Popular questions about 1999 Daihatsu Gran Move drive-belt pulleys

Which pulleys are on a 1999 Gran Move?
The usual setup includes the crankshaft pulley (harmonic balancer), alternator pulley, power steering pump pulley, A/C compressor pulley, plus one or more idler/adjuster pulleys. Depending on engine and market, it may run separate V‑ribbed belts for the alternator and A/C, so routing can vary slightly.

How often should the pulleys or belts be replaced?
Inspect at every service. Belts typically get replaced around 60,000–90,000 km or when cracked, noisy or glazed. Pulleys are on-condition items — if there’s bearing noise, wobble, roughness or visible misalignment, replace them. It’s wise to renew the belt when changing a pulley.

Can a noisy pulley be lubricated to fix it?
No. These are sealed bearings, once they’re noisy, they’re on the way out. Lubricants won’t get into the sealed race and can contaminate the belt. The proper fix is to replace the affected pulley and check belt condition and tension at the same time.