Parts for your 1997 Mitsubishi Pajero-Receiver driers

1997 Mitsubishi Pajero receiver-drier: what it does and when to replace it

Based on technical references — Mitsubishi Pajero/Montero 1997 Workshop Manual (Group 55: Heating, Ventilation & Air Conditioning), the Mitsubishi ASA electronic parts catalogue for the 1991–1999 Pajero range (V2–V7), and DENSO A/C system fundamentals — the 1997 Mitsubishi Pajero uses a thermal expansion valve (TXV) R‑134a air‑conditioning system with a receiver‑drier mounted at or near the condenser. So yes, a receiver‑drier is fitted and relevant to this model.

On a ’97 Pajero, the receiver‑drier is the A/C system’s moisture and debris bouncer. Its desiccant absorbs water vapour (which otherwise forms ice and corrosive acids), the internal filter traps fine particles after compressor or hose wear, and the canister acts as a small liquid reservoir to keep the expansion valve fed with stable, bubble‑free liquid refrigerant. That all adds up to cooler air from the vents, steadier pressures, and longer component life — exactly what you want on a big wagon that sees plenty of kilometres under the Aussie or Kiwi sun.

Because the desiccant has a finite capacity and the system is hygroscopic, Mitsubishi’s service literature treats the receiver‑drier as a routine replacement item whenever the A/C circuit is opened. It’s also smart preventative maintenance if the system’s been exposed to air, stored unsealed, or is more than a few years old.

• Replace the receiver‑drier any time the system is opened (condenser, hose, compressor or evaporator work), after a compressor failure, or as preventative care every 4–5 years.
• Common warning signs: poor cooling at idle, pressure fluctuations on gauges, short‑cycling, or contamination found in removed components.
• Location: typically bolted to the condenser side tank or nearby under the bonnet, some variants place it inside a protective bracket.

When fitting a new unit, always use new compatible O‑rings, a light smear of A/C oil, and add the correct amount/type of PAG oil (Mitsubishi specifies ND‑OIL 8/PAG‑46 for many R‑134a systems — confirm against the under‑bonnet label or workshop manual). After installation, evacuate thoroughly (30–45 minutes), leak‑test, then recharge to the specified R‑134a mass. For Pajeros with rear air (dual A/C), ensure the charge spec you use matches the dual‑evaporator setup.

A good quality receiver‑drier is cheap insurance. Swap it as part of any major A/C service and the Pajero’s system will stay frosty without dramas.

Popular questions about 1997 Mitsubishi Pajero receiver-driers

Where is the receiver‑drier located on a 1997 Pajero?
It’s usually mounted on or beside the condenser at the front of the vehicle, under the bonnet on the passenger side. Look for a small cylindrical canister with two A/C lines and a pressure switch or service port nearby. Some variants hide it behind a bracket or splash panel.

How often should the receiver‑drier be replaced?
Replace it any time the A/C system is opened, after a compressor or condenser replacement, or as preventative maintenance every 4–5 years. If the system’s been open to air for more than a few hours, fit a new drier before evacuation and recharge.

What are the symptoms of a blocked or saturated receiver‑drier?
Expect weak cooling, rapid cycling, erratic high‑side pressure, or a noticeable drop in performance at idle. After a compressor failure, debris caught in the drier can starve the expansion valve — gauges will show unusual pressure behaviour and vent temps won’t stabilise.