Showing specs for all NA & NB Miatas

First and reverse brake plate-to-case clearance (SB4A-EL 4AT)

Standard clearance ≈0.02402—0.07598 in (0.61—1.93 mm)Standard clearance 0.61—1.93 mm

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

After installing planetary gear component and aligning brake plate/disc/backing plate lugs into case grooves, measure clearance between reverse brake plate and transmission case lugs. If below range inspect installation/contamination; if above replace specified pack parts. Pack has 5 drive/4 driven plates. Procedure lower inch bound 0.03 differs from table 0.02; metric agrees and controls.

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 (2)

View 2 source citations
  • Mazda SB4A-EL Automatic Transmission Workshop ManualTier 1
    Page 05–13Y–44 (PDF p. 56) · Printed value & notes
    Part no. 9999-95-422H-99
    Page 05–13Y–44 (PDF p. 56)
    Printed: “Standard clearance 0.61—1.93 mm {0.03—0.07 in}”
  • Mazda SB4A-EL Automatic Transmission Workshop ManualTier 1
    Page 05–50–1 (PDF p. 87) · Printed value & notes
    Part no. 9999-95-422H-99
    Page 05–50–1 (PDF p. 87)
    Printed: “1st and reverse brake Number of drive/driven plates 5/4 Reverse brake clearance (mm {in}) 0.61—1.93 {0.02—0.07}”

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