Mazda MX-5 NA silhouetteMX-5 NA

HEATER UNIT

U-20parts diagram

Disassembly / Assembly

Disassemble and assemble as shown in the figure.
Parts DiagramFig. fig1
Parts diagram
#Part NameNotes
1Heater core
2Temperature blend door
3Airflow mode door

Inspection

Heater core

Heater core inspection

  1. 1
    Check the heater core fins for blockage.
  2. 2
    If the fins are clogged, clean them.
  3. 3
    Check the fittings for cracks or other damage. Replace the heater core if necessary.
    Heater core unit shown in isolation for inspection, with two coolant hose stubs visible on the left side and the finned heat-exchanger matrix on the right.
    05U0UX-035

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