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Home >> Mazda >> 2019 >> 3 Base, 4D Hatchback, AWD >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Basic System - HVAC >> A/C Unit Disassembly/Assembly [(Us)] >> Notes
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A/C Unit Disassembly/Assembly [(Us)]: Notes

Replacement Part 

O-ring (expansion valve)
Quantity: 2
Location of use: expansion valve
  1. Remove the A/C unit short-cord. (See A/C UNIT SHORT-CORD REMOVAL/INSTALLATION [(US)] .)
  2. Disassemble in the order indicated in the table.
    CAUTION:
    • If a non-specified grease is used, it may result in abnormal noise or improper operation of the links. Apply only the specified grease to each link.
    Fig 1: Exploded View Of A/C Unit Components With Torque Specification
    G13177370Courtesy of MAZDA MOTORS CORP.

    X: Applicable - : Not applicable

    PART NAME DESCRIPTION

    Step Part name Disassembly/assembly of main parts
    Heater core Evaporator temperature sensor Evaporator
    1 Polyurethane foam - X X
    2 Rubber - X X
    3 Expansion valve - - X
    4 Drain hose - - -
    5 Driver-side air mix actuator (full-auto air conditioner) X X X
    6 Driver-side air mix link (full-auto air conditioner) - - -
    7 Airflow mode actuator - - -
    8 Airflow mode link set - - -
    9 Passenger-side air mix actuator - - -
    10 Passenger-side air mix link - - -
    11 Polyurethane foam X X X
    12 Rubber X X X
    13 Plate (1) X X X
    14 Plate (2) X X X
    15 Cover X X X
    16 Heater core X X X
    17 Case - - -
    18 Dash-electrical supply unit - - -
    19 A/C case (1) - X X
    20 A/C case (2) - X X
    21 Polyurethane foam - - -
    22 Evaporator temperature sensor (See EVAPORATOR TEMPERATURE SENSOR ASSEMBLY NOTE .) - X X
    23 Case (without refrigerant system) - - -
    24 Evaporator (with refrigerant system) - - X
    25 Adhesive polyurethane - - -
    26 A/C case assembly - - -
  3. Assemble in the reverse order of disassembly.