Parts for your 1986 Mitsubishi Pajero-Power steering pump

1986 Mitsubishi Pajero Power Steering Pump

Technical sources confirm the 1986 Mitsubishi Pajero is equipped with a hydraulic power steering pump on models specified with power steering. The Mitsubishi Pajero (L040) Factory Service Manual (Group 37A – Power Steering), the Mitsubishi ASA/CAPS electronic parts catalogue for 1986 L040 chassis, and Gregory’s/Haynes Pajero/Montero 1983–1996 workshop manual all describe a belt‑driven power steering “oil pump” feeding a recirculating ball steering box. That makes a power steering pump relevant to servicing a 1986 Pajero sold in Australia and New Zealand, where power steering was standard or common on most trims by 1986.

The power steering pump on a 1986 Pajero does the hard yakka of pushing fluid through the steering system so the wheel feels light at low speeds and steady on the open road. Driven by a V‑belt off the crank pulley, it draws fluid from the reservoir and sends it under pressure to the steering box, then back to the tank. When it’s healthy, steering effort is consistent and quiet, when it’s crook, there’s groaning, heavy feel, or leaks around the pump, hoses, or front seal.

As part of routine servicing, it’s smart to check belt condition and tension, inspect hoses and clamps for weeping, and keep the fluid clean. Most manuals of the era specify ATF meeting Dexron II for the power steering system, if the fluid looks dark or smells burnt, a flush is due. A good rule of thumb is to refresh the fluid every 40,000–60,000 km, especially if the vehicle tows or sees off‑road work.

Replacement is straightforward for a home mechanic with basic tools: disconnect the battery, drain or syringe the reservoir, crack the pressure and return lines, remove the drive belt and mounting bolts, then swap in the new or rebuilt pump. Always replace the O‑rings, set belt tension to spec, and bleed the system by turning the wheels lock‑to‑lock with the front tyres off the ground while topping the reservoir. Don’t run the pump dry—it’ll score the internals quick smart.

If noise persists after bleeding, look for aeration (foamy fluid), a kinked return hose, or a misaligned pulley. On older Pajeros, worn steering box seals can mimic pump leaks, so give the box and pitman area a once‑over before ordering parts.

• Fluid choice: ATF Dexron II (or a compatible modern equivalent).
• Watch‑outs: leaks at front seal, whining on cold start, metal glitter in fluid.
• Helpful tip: consider a quality reman pump and fresh hoses to avoid repeat jobs.

Popular questions about 1986 Mitsubishi Pajero power steering pumps

What fluid should go in a 1986 Pajero power steering system?
Most factory literature for first‑gen Pajero specifies ATF meeting Dexron II for the power steering. A modern Dexron II/III compatible ATF is typically used today. Keep the reservoir topped to the mark and avoid mixing fluid types. If changing fluid, bleed air out with the front wheels off the ground.

How can someone tell if the pump is failing?
Classic signs include groaning or whining that rises with engine revs, heavy steering at low speeds, or visible leaks from the pump body, front seal, or hose fittings. Burnt‑smelling, dark fluid or metal flecks in the reservoir also point to pump wear. Rule out a loose or glazed drive belt before condemning the pump.

Can a base‑model 1986 Pajero without power steering be upgraded?
Yes—retrofits are common. The usual kit list includes the pump and brackets, reservoir, pressure and return hoses, crank and pump pulleys, and the matching steering box. It’s a bolt‑on job with basic fabrication in some cases, but sourcing the correct L040‑series parts makes the process much easier.