Charging New R-134a Refrigerant

1999 Mazda 626 ES, 2.5 D, StandardSECTION Charging New R-134a Refrigerant
WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the manifold gauge set.
  2. Connect the tap pin side of the charging hose to the air purge valve of the manifold gauge.
  3. Connect the vacuum pump hose to the center joint of the manifold gauge.
  4. Connect the vacuum pump hose to the vacuum pump.
  5. Connect the charging hose to the refrigerant tank.
  6. Place the refrigerant tank on the scale.
    Fig 1: Connecting Tap Pin Side Of Charging Hose To Air Purge Valve Of Manifold Gauge
    G01346041Courtesy of MAZDA MOTORS CORP.
  7. Open all the valves of the manifold gauge.
    CAUTION:
    • Close the manifold gauge valve immediately after stopping the vacuum pump. If the valve is left open, the vacuum pump oil will back flow into the refrigeration cycle and cause a decrease in the efficiency of the air conditioner.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.