Parts for your 1990 Mitsubishi Pajero-Drive belt

1990 Mitsubishi Pajero Drive-Belt

Based on the Mitsubishi Pajero/Montero factory workshop manual for the late-’80s to early-’90s models, plus Gates and Dayco Australia application catalogues and the Haynes/Gregory’s service manuals, the 1990 Mitsubishi Pajero does use accessory drive-belts. These belts run vital ancillaries on the common engines of the era (4G54 2.6 petrol, 6G72 3.0 V6 petrol, and 4D56 2.5 diesel), so a drive-belt is absolutely relevant for this model year.

On a 1990 Pajero, the drive-belts (often multiple V-belts rather than a single serpentine) spin the alternator, power steering pump, and air‑con compressor, and on some setups also the water pump. Without them, charging, cooling, and steering assist go out the window. That’s why belt condition is a key part of routine servicing for a classic Paj.

What they do, in plain terms: keep the battery charged, the steering light, and the cabin cool. If a belt slips or snaps, expect an illuminated battery light, heavy steering, rising temp gauge, squeals on cold start, or a whiff of burning rubber. Left unchecked, a cheap belt can turn into an expensive recovery.

• Inspection: check every 10,000–15,000 km or at each service. Look for cracks, fraying, glazing, missing ribs, or rubber dust around the pulleys.
• Tension: V-belts need the right deflection at the midpoint (a modest thumb push), too tight wears bearings, too loose slips and squeals. Re‑check tension 500–1,000 km after fitting.
• Replacement timing: commonly 40,000–60,000 km or 4–5 years, sooner if there’s noise, damage, or oil contamination. Older belts harden with age even if the km are low.
• Best practice: if two belts run the same pulley (common on diesel alternators), replace them as a matched pair. Keep pulleys aligned and clean. Use quality belts sized to the exact engine and A/C/PS configuration.

Handy driveway tips for this era Paj: disconnect the battery, note routing, crack the pivot and adjuster bolts on the alternator or idler, slip off the old belt, then tension the new one with steady, even pull. Spin the pulleys, listen for rough bearings, and tighten everything with a proper spanner, not over-the-top grunt. For V6 and diesel models that also have a cam timing belt, remember that’s a separate service item with its own interval—don’t mix the two up.

• What belts does a 1990 Pajero use by engine?
  The 4G54 2.6 petrol typically runs multiple V-belts for alternator, power steering, and A/C. The 6G72 3.0 V6 has a timing belt for the cams plus separate accessory V-belts. The 4D56 2.5 diesel often uses twin alternator belts and separate belts for power steering and A/C, depending on accessories fitted.
• How often should the drive-belts be replaced?
  Inspect every service and plan on 40,000–60,000 km or 4–5 years for replacement, earlier if there’s cracking, glazing, squeal, or oil contamination. High-heat, off‑road, and towing use can shorten intervals.
• What size belt does my Pajero need?
  Sizes vary by engine and whether it has air‑con and power steering. The safest bet is to check the build plate and existing belt markings, or use a reputable AU/NZ parts catalogue for the exact engine code and accessory setup.