Parts for your 1990 Mitsubishi Pajero-Universal joints

1990 Mitsubishi Pajero universal joints

Yes—universal joints are absolutely used on the 1990 Mitsubishi Pajero. This is confirmed by the Mitsubishi Pajero/Montero Factory Service Manual (1989–1991) under the propeller shaft section, the Mitsubishi ASA Electronic Parts Catalogue for the 1990 Pajero (listing front and rear propeller shaft universal joints), and general repair references such as the Haynes Mitsubishi Pajero/Montero 1983–1999 manual.

On a ’90 Pajero, universal joints (U-joints) sit at each end of the front and rear prop shafts. Their job is to let the shafts transmit torque while the suspension moves and the driveline runs at slight angles—pretty handy when the truck’s flexing over ruts or cruising the highway. When U-joints are healthy, you get smooth take-offs and steady, vibe-free running. When they’re tired, you’ll often notice a clunk on take-up, a rhythmic vibration at speed (often 60–90 km/h), or see rusty dust around the bearing caps.

Most Pajeros of this era left the factory with greasable U-joints. Some aftermarket replacements are sealed-for-life, but plenty still come with grease nipples. Keeping on top of lube makes a big difference, especially for Aussie and Kiwi conditions where gravel, corrugations, and creek crossings are part of life. A quality NLGI #2 lithium complex or moly EP grease is the go.

Servicing tips for Pajero U-joints:

• Grease them every 10,000–15,000 km, or sooner if you’re doing off-road or towing. After water crossings, give them a fresh shot.
• With the vehicle safely supported, check for free play by holding the shaft near each uni and twisting back and forth. Any knock, notchiness, or visible movement at the caps means replacement time.
• Watch for perished seals and flung grease—signs the caps are running hot or dry.
• When replacing, mark flange positions and keep the phasing of the yokes. Refit and torque the flange bolts to the Pajero workshop manual spec and ensure the shaft turns freely without bind.

A well-greased set of U-joints will easily outlast harsh kilometres. If they’ve started protesting, don’t put it off—once a uni lets go, it can damage the shaft or flanges and leave the Pajero stranded far from help.

Popular questions about 1990 Mitsubishi Pajero universal joints

How often should the U-joints be greased on a 1990 Pajero?
For normal mixed driving, every 10,000–15,000 km at a routine service is a solid cadence. If the Pajero works hard—sand, mud, corrugations, towing—grease them more often, and always after deep water crossings. Fresh grease purges grit and moisture that chew out needle bearings.

What are the tell-tale signs a Pajero U-joint is on the way out?
Common giveaways include a clunk when shifting from reverse to drive, a shudder on take-off, or a cyclical vibration that builds with road speed. On inspection you might see rusty dust, a dry or torn seal, or feel tight spots when articulating the joint by hand. Any of these call for replacement.

Can a handy home mechanic replace Pajero U-joints?
Yes, with care. You’ll need basic spanners, a decent vice or press, and patience. Mark the flanges, keep the yokes in phase, and seat the circlips cleanly. If a cap won’t press out or the shaft needs balancing, a driveline specialist is worth the call.