Showing specs for all NA & NB Miatas

Center-support front brake piston stroke (SB4A-EL 4AT)

Air pressure ≈56.565 psi (390 kPa) max. Piston stroke ≈0.03071—0.05197 in (0.78—1.32 mm)Air pressure 390 kPa max. Piston stroke 0.78—1.32 mm

Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Use a dial indicator while applying and releasing compressed air through the indicated passage of the center-support front brake assembly. Maximum air pressure 390 kPa; never apply air for longer than 3 seconds at a time because this damages the seal. The procedure also calls this the front clutch test. No identification with the differently named technical-table brake rows is assumed.

Applies to
  • NB 2001–2005 (BP-Z3, 4AT) — 2003–2005 factory references identify this component manual; 2001–2002 inferred within NB2 non-turbo family.
  • Verified in: Mazda SB4A-EL Automatic Transmission Workshop Manual

Sources (1)

View 1 source citations
  • Mazda SB4A-EL Automatic Transmission Workshop ManualTier 1
    Page 05–13Y–52 (PDF p. 64) · Printed value & notes
    Part no. 9999-95-422H-99
    Page 05–13Y–52 (PDF p. 64)
    Printed: “Air pressure 390 kPa {4.0 kgf/cm², 57 psi} max. Piston stroke 0.78—1.32 mm {0.04—0.05 in}”

Related service specs

Browse all transmission specs