Updated specs are available.
Center-support rear brake piston stroke (SB4A-EL 4AT)
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Not yet checked against the factory manual for your car's year. It's verified in the Mazda SB4A-EL Automatic Transmission Workshop Manual; later manuals may differ.
Air pressure ≈56.565 psi (390 kPa) max. Piston stroke ≈0.04055—0.06496 in (1.03—1.65 mm)Air pressure 390 kPa max. Piston stroke 1.03—1.65 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 rear 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 rear 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-99Page 05–13Y–52 (PDF p. 64)Printed: “Air pressure 390 kPa {4.0 kgf/cm², 57 psi} max. Piston stroke 1.03—1.65 mm {0.05—0.06 in}”
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