Parts for your 1991 Mitsubishi Pajero-Steering rack

1991 Mitsubishi Pajero steering-rack — is it actually used on this model?

For the 1991 Mitsubishi Pajero, a steering-rack isn’t fitted. Technical references including the Mitsubishi Pajero NH–NJ Factory Service Manual (e.g., PWEE9310 series), Gregory’s Pajero 1991–1996 manual, and the Haynes Mitsubishi Montero/Pajero 1983–1999 manual all specify a recirculating-ball power steering gearbox, not a rack-and-pinion assembly. Mitsubishi’s ASA electronic parts catalogue for these years further lists a steering gear (box), pitman arm, idler arm, centre link and tie-rod ends—no steering-rack in the bill of materials.

Why no steering-rack? The Pajero of this era sits on a robust ladder frame and was engineered for serious off-road work. A steering box with a pitman arm and idler arrangement offers excellent impact resistance, generous ground clearance around the front crossmember, and strong mechanical leverage—handy when tyres are aired down on rough tracks. That geometry also suits the Pajero’s double-wishbone, torsion-bar IFS and heavy-duty front-end loads better than many period rack-and-pinion solutions.

What does that mean for servicing? While a steering-rack isn’t part of the 1991 Pajero, its steering still deserves regular attention. Typical wear points are the idler arm bushing, pitman arm, centre link and tie-rod ends, plus the steering box input/output shaft seals. Excess play at the wheel, front-end shimmy, wandering on the highway and uneven tyre wear are all red flags.

• Check and top up power steering fluid (commonly ATF Dexron II/III spec). Look for aeration, burnt smell or metal flecks.
• Inspect the idler arm and pitman arm for looseness, any slop here multiplies at the wheel.
• Examine tie-rod ends and the centre link for play, replace in pairs where practical and get a wheel alignment after.
• Assess steering box lash, slight adjustment is possible, but excessive free play often points to internal wear.
• Look over the steering column coupling (rag joint/universal) and chassis/IFS bushes that can mimic steering issues.

If the steering box is leaking or feels notchy, a quality seal kit or a professionally reconditioned unit usually brings it back to form. Off-roaders should schedule more frequent checks—corrugations and mud baths are tough on joints and seals.

Popular questions

Does a 1991 Mitsubishi Pajero have a steering-rack?
No. Technical sources such as the Mitsubishi Factory Service Manual, Gregory’s and Haynes manuals show a recirculating-ball power steering gearbox with a pitman and idler arm, not a rack-and-pinion assembly.

What should be serviced instead of a steering-rack on a 1991 Pajero?
Focus on the steering gearbox, idler arm, pitman arm, centre link and tie-rod ends. Keep the power steering fluid (ATF) fresh, check for leaks, and have free play and alignment sorted to prevent tyre wear and wandering.

Can a steering-rack be retrofitted to a 1991 Pajero?
It’s not a practical bolt-on. Converting from a steering box to a rack-and-pinion would require custom fabrication, geometry changes and certification. The original steering box setup is tough, serviceable and well matched to the vehicle’s off-road brief.