Parts for your 1993 Mitsubishi Pajero-Receiver driers

1993 Mitsubishi Pajero receiver‑drier: what it does, where it fits, and how to look after it

Drawing on Mitsubishi’s factory workshop manuals for the NH/NG series (early 1990s) and the Mitsubishi ASA/CAPS electronic parts catalogue, the 1993 Mitsubishi Pajero runs a TXV-style air‑conditioning system that uses a receiver‑drier mounted in the high‑pressure liquid line near the condenser. Major aftermarket catalogues (e.g. Denso, Nissens) also list direct‑fit receiver‑driers for the 1993 Pajero, confirming the part is fitted and relevant to servicing.

The receiver‑drier on a ’93 Pajero is the system’s moisture trap, filter, and small storage bottle in one. It stores liquid refrigerant so the thermal expansion valve gets a steady, air‑free feed, it filters out fine debris that could jam the valve, and its desiccant absorbs moisture that would otherwise turn into ice or corrosive acids inside the system. Whether the vehicle is still on R12 (where legal) or has been converted to R134a, the drier is essential to protect the compressor and keep cabin temps nice and chilly.

Replacement is recommended any time the A/C system is opened to atmosphere, after a compressor or condenser change, or if the car has sat for months with lines uncapped. As preventive maintenance, many techs in Aussie and Kiwi conditions replace the drier every 5–7 years to stay ahead of desiccant saturation. Clues it’s due include weak cooling, rapid cycling, unstable high‑side pressures, or signs of contamination.

When fitting a new drier on a Pajero:

• Match the unit to the vehicle’s build (port sizes, bracket, pressure switch and/or sight glass provision as applicable).
• Replace all O‑rings with HNBR, lightly lubricated with the correct oil: mineral for R12 systems, PAG or ester oil for R134a conversions per compressor spec.
• Keep ports capped until the last moment, observe flow direction arrows, support the drier so vibration doesn’t crack the lines.
• Evacuate under deep vacuum for 30–45 minutes before recharging to boil off residual moisture, then charge by weight.

If there’s evidence of “black death” or heavy debris, lines and condenser should be flushed or replaced, and the TXV inspected. Refrigerant recovery and re‑gas must be done by a licensed technician in accordance with Australian and New Zealand regulations.

FAQs

Where is the receiver‑drier on a 1993 Pajero?
On most 1993 Pajero models it’s mounted up front by the condenser, typically on the passenger‑side (RHD) chassis area or radiator support. You’ll see two hard lines attached, and some versions have a pressure switch or a small sight glass on top. Exact placement can vary slightly by engine and market spec.

Do I need a new drier when converting from R12 to R134a?
Yes. A fresh, R134a‑compatible receiver‑drier is a must during conversion. Replace the O‑rings with HNBR, use the compressor‑specified oil (often PAG or ester), fit R134a service ports, evacuate thoroughly, and label the vehicle for the new refrigerant and charge amount.

How often should a Pajero receiver‑drier be replaced?
Always replace it whenever the system is opened or major A/C parts are changed. As preventive care, many technicians suggest every 5–7 years in our climate. If the A/C has been open to air or the compressor failed, replace the drier immediately.