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Home >> Mazda >> 2003 >> MX-5 Miata LS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Overhaul >> Automatic Transmission >> Control Valve Body Disassembly/Assembly >> Assembly Procedure

Assembly Procedure

  1. Measure the spring free length.
    VALVE BODY SPRING SPECIFICATIONS

    Spring Outer Diameter - (mm {in}) Free Length - (mm {in})
    Secondary Regulator Valve Spring 17.43 {0.686} 71.27 {2.806}
    Cut Back Valve Spring 6.85 {0.27} 23.00 {0.906}
    Throttle Valve Secondary Spring 7.16 {0.28} 19.24 {0.757}
    Throttle Valve Primary Spring 10.90 {0.429} 39.55 {1.557}
  2. If not within the specification, replace the control valve body component.
  3. Install the throttle valve.
  4. Install the throttle valve keep plate.
  5. Install the throttle valve compensating ring and secondary valve spring.
    Fig 1: Installing Throttle Valve Compensating Ring & Secondary Valve Spring
    G03186906Courtesy of MAZDA MOTORS CORP.
  6. Install the throttle valve primary spring and shift down plug.
    Fig 2: Installing Throttle Valve Primary Spring & Shift Down Plug
    G03186907Courtesy of MAZDA MOTORS CORP.
  7. Install the throttle valve cam.
    Fig 3: Installing Throttle Valve Cam
    G03186908Courtesy of MAZDA MOTORS CORP.
  8. Install the throttle valve cam to the valve body.

    Tightening Torque 

    1. 5.9-8.8 N.m {60-90 kgf.cm, 52-78 in.lbf} 

  9. Install the secondary regulator spring, secondary regulator valve, and front valve end cover.

    Tightening Torque 

    1. 4.9-5.8 N.m {50-60 kgf.cm, 43-52 in.lbf} 

    Fig 4: Installing Secondary Regulator Spring, Secondary Regulator Valve & Front Valve End Cover
    G03186909Courtesy of MAZDA MOTORS CORP.
  10. Install the spring, cutback valve, cut back plug, and cut back retainer.
    Fig 5: Installing Spring, Cutback Valve, Cut Back Plug & Cut Back Retainer
    G03186910Courtesy of MAZDA MOTORS CORP.


  1. Measure the spring free length.
    UPPER REAR VALVE BODY SPRING SPECIFICATIONS

    Spring Outer Diameter - (mm {in}) Free Length - (mm {in})
    Clutch Sequence Valve Spring 9.10 {0.36} 37.55 {1.478}
    1-2 Shift Valve Spring 8.90 {0.35} 29.15 {1.148}
    2-3 Shift Valve Spring 8.90 {0.35} 29.15 {1.148}
    3-4 Shift Valve Spring 8.90 {0.35} 215 {1.148}
  2. If not within the specification, replace the control valve body component.
  3. Install the shift valve spring, 3-4 shift valve, shift valve plug, and retainer.
    Fig 1: Installing Shift Valve Spring, 3-4 Shift Valve, Shift Valve Plug & Retainer
    G03186912Courtesy of MAZDA MOTORS CORP.
  4. Install the shift valve spring, 1-2 shift valve, Shift valve spring, 2-3 shift valve, shift valve plug, and retainer.
    Fig 2: Installing Shift Valve Spring, 1-2 Shift Valve, Shift Valve Spring, 2-3 Shift Valve, Shift Valve Plug & Retainer
    G03186913Courtesy of MAZDA MOTORS CORP.
  5. Install the gasket and plate.
  6. Tighten the bolt.

    Tightening Torque 

    1. 4.9-5.8 N.m {50-60 kgf.cm, 43-52 in.lbf} 

  7. Install the reverse brake sequence valve spring, clutch sequence valve, 3-2 kickdown control valve plug, and needle roller.
    Fig 3: Installing Reverse Brake Sequence Valve Spring, Clutch Sequence Valve, 3-2 Kickdown Control Valve Plug & Needle Roller
    G03186914Courtesy of MAZDA MOTORS CORP.


  1. Measure the spring free length.
    LOWER VALVE BODY SPRING SPECIFICATIONS

    Spring Outer Diameter - (mm {in}) Free Length - (mm {in})
    Pressure Relief Valve Spring 13.14 {0.517} 32.14 {1.265}
    TCC Control Valve Spring 11.40 {0.449} 32.60 {1.283}
    Valve Damping Spring 4.97 {0.20} 20.00 {0.787}
    Primary Regulator Ball Valve Spring 6.00 {0.24} 16.45 {0.648}
  2. If not within the specifications, replace the control valve body component.
  3. Install the primary regulator valve, spring, primary regulator valve plunger, primary regulator valve sleeve, and retainer.
    Fig 1: Installing Primary Regulator Valve, Spring, Primary Regulator Valve Plunger, Primary Regulator Valve Sleeve & Retainer
    G03186916Courtesy of MAZDA MOTORS CORP.
  4. Install the spring, torque converter clutch control valve, torque converter clutch valve sleeve, and pin.
    Fig 2: Installing Spring, Torque Converter Clutch Control Valve, Torque Converter Clutch Valve Sleeve & Pin
    G03186917Courtesy of MAZDA MOTORS CORP.
  5. Install the pressure relief valve ball, spring and pressure relief valve retainer.
  6. Tighten the bolt

    Tightening Torque 

    1. 5.0-5.8 N.m {50-60 kgf.cm, 44-52 in.lbf} 

    Fig 3: Installing Pressure Relief Valve Ball, Spring & Pressure Relief Valve Retainer
    G03186918Courtesy of MAZDA MOTORS CORP.
  7. Install the new gasket and lower valve body plate and tighten the bolts.

    Tighten Torque 

    1. 5.0-5.8 N.m {50-60 kgf.cm, 44-52 in.lbf} 

  8. Install the new gasket and torque converter clutch control valve plate and tighten the bolts.

    Tighten Torque 

    1. 5.0-5.8 N.m {50-60 kgf.cm, 44-52 in.lbf} 



  1. Measure the spring free length.
    CONTROL VALVE BODY SPRING SPECIFICATIONS

    Spring Outer Diameter - (mm {in}) Free Length - (mm {in})
    Ball Valve Spring 6.20 {0.24} 15.00 {0.591}
    Bypass Valve Spring 13.80 {0.543} 28.90 {1.138}
    Low Coast Modulator Valve Spring 9.24 {0.36} 42.35 {1.667}
    Intermediate Coast Modulator Valve Spring 9.04 {0.356} 27.26 {1.073}
  2. If not within the specification, replace the control valve body component.
  3. Install the low coast modulator valve, spring, intermediate coast modulator valve, spring, new gasket, shift solenoid A, and B.
    4. Fig 1: Installing Low Coast Modulator Valve, Spring, Intermediate Coast Modulator Valve, Spring, New Gasket, Shift Solenoid A & B
    G03186920Courtesy of MAZDA MOTORS CORP.
  4. Tighten the bolts.

    Tighten Torque 

    1. 7.9-11.7 N.m {80-120 kgf.cm, 70-104 in.lbf} 

  5. Apply ATF to the new O-ring.
  6. Install the O-ring to the TCC solenoid valve.
  7. Install the TCC solenoid valve to the lower valve body.
    Fig 2: Installing TCC Solenoid Valve
    G03186921Courtesy of MAZDA MOTORS CORP.
  8. Install the valve body balls to the upper rear valve body.
    Fig 3: Installing Valve Body Balls To Upper Rear Valve Body
    G03186922Courtesy of MAZDA MOTORS CORP.
  9. Install the valve body ball, inspect ball, and bypass valve, to the lower valve body.
    Fig 4: Installing Valve Body Ball, Inspect Ball & Bypass Valve To Lower Valve Body
    G03186923Courtesy of MAZDA MOTORS CORP.
  10. Place separator plate and new lower valve body gasket on lower valve body component and tighten installation section of front upper valve body component with 2 bolts temporarily.
    Fig 5: Installing Separator Plate & Lower Valve Body Gasket
    G03186924Courtesy of MAZDA MOTORS CORP.
  11. Place new upper valve body gasket on lower valve body component.
    Fig 6: Installing Upper Valve Body Gasket On Lower Valve Body Component
    G03186925Courtesy of MAZDA MOTORS CORP.
  12. While holding upper valve body gasket and lower valve body component together, install it on rear upper valve body component.
    Fig 7: Installing Upper Valve Body Gasket & Lower Valve Body Component On Rear Upper Valve Body Component
    G03186926Courtesy of MAZDA MOTORS CORP.
  13. Tighten 3 bolts indicated temporarily.
    Fig 8: Identifying 3 Valve Body Bolts
    G03186927Courtesy of MAZDA MOTORS CORP.
  14. Turn over lower valve body component and tighten 4 bolts indicated temporarily.
    Fig 9: Identifying 4 Valve Body Bolts
    G03186928Courtesy of MAZDA MOTORS CORP.
  15. Remove the 2 bolts tightened temporarily in step 5.
    Fig 10: Identifying 2 Valve Body Bolts
    G03186929Courtesy of MAZDA MOTORS CORP.
  16. Install lower valve body component on front upper valve body.
    Fig 11: Installing Lower Valve Body Component On Front Upper Valve Body
    G03186930Courtesy of MAZDA MOTORS CORP.
  17. Tighten 3 bolts indicated in figure at the left temporarily.
    Fig 12: Identifying 3 Valve Body Bolts
    G03186931Courtesy of MAZDA MOTORS CORP.
  18. Turn over lower valve body and tighten 5 bolts indicated in figure at the left temporarily.
    Fig 13: Identifying 5 Valve Body Bolts
    G03186932Courtesy of MAZDA MOTORS CORP.
  19. Tighten bolts on upper valve body side to specified torque.

    Tightening Torque 

    1. 5.0-5.8 N.m {50-60 kgf.cm, 44-52 in.lbf} 

    Fig 14: Tightening Upper Valve Body Side Bolts
    G03186933Courtesy of MAZDA MOTORS CORP.
  20. Tighten bolts on lower valve body inside to specified torque.

    Tightening Torque 

    1. 5.0-5.8 N.m {50-60 kgf.cm, 44-52 in.lbf} 

    Fig 15: Tightening Lower Valve Body Inside Bolts
    G03186934Courtesy of MAZDA MOTORS CORP.
  21. After installing manual valve, install detent spring and plate and tighten detent spring bolt to specified torque.

    Tightening Torque 

    1. 5.0-5.8 N.m {50-60 kgf.cm, 44-52 in.lbf} 

    Fig 16: Installing Detent Spring & Plate
    G03186935Courtesy of MAZDA MOTORS CORP.
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