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Servicing - A/t: Other Mazda MX-5 NA

Automatic Trans 5 illustrations ~648 words

Transmission

Park vehicle on level ground. Apply parking brake. Warm engine to normal operating temperature. Briefly place selector lever in all gears and return it to "P" position. Clean dipstick and insert it in tube. Remove dipstick. Level should be between "L" and "F" marks. Check fluid for discoloration and unusual smell. If necessary, add fluid. DO NOT overfill.

Use Dexron-II or M-III ATF.

OVERDRIVE BRAKE BAND

  1. Remove overdrive band servo cover and gasket. (Scheme 2) Loosen overdrive adjustment screw lock nut while holding piston stem stationary. Tighten piston stem to 61-87 INCH lbs. (7-10 N.m).
  2. Back off piston stem 2 turns. While holding stem in this position, tighten lock nut to 11-30 ft. lbs. (15-40 N.m). Install overdrive bandservo cover with NEW gasket. Tighten cover bolts to 44-62 INCH lbs. (5-7 N.m).

Scheme 2

Scheme 2
Scheme 2

Scheme 3

Scheme 3: KICKDOWN & 4-3 SWITCH
Scheme 3: KICKDOWN & 4-3 SWITCH
  1. Kickdown and 4-3 switch is located on upper part of accelerator pedal. To adjust kickdown section of switch, use steps 2) and 3). To adjust 4-3 section of switch, use steps 4) and 5).
  2. Connect voltmeter between terminal "C" and ground. (Scheme 3) Turn ignition on. Depress accelerator pedal fully. Voltmeter should read less than 1.5 volts until pedal is at least 7/8 depressed. Battery voltage should be present at or after 7/8 pedal travel.
  3. If voltage is not correct, disconnect switch and check continuity between terminals "C" and "D" when tip of switch is depressed.24-.26" (6.0-6.5 mm). If continuity is not present, replace switch. If continuity is present, adjust switch until battery voltage is present at 7/8 of pedal travel.
  4. Connect voltmeter between terminal "A" and ground. (Scheme 3) Turn ignition on. Depress accelerator pedal to limit. Voltmeter should read less than 1.5 volts until pedal is at least 3/4 depressed. Battery voltage should be present at or after 3/4 of pedal travel.
  5. If voltage is not correct, disconnect switch and check continuity between terminals "A" and "B" when tip of switch is depressed.14-.18" (3.5-4.5 mm). If continuity is not present, replace switch. If continuity is present, adjust switch until battery voltage is present at 3/4 of pedal travel.

GEARSHIFT LINKAGE

  1. Disconnect negative battery cable. Remove upper panel, selector sleeve and indicator panel. Remove boot plate. Place gearshift lever in "P" position. Loosen lock nut on side of gearshift lever. (Scheme 4) Move adjustment lever forward to set transmission in "P" position.
  2. Adjust the lever so clearance between the guide plate and the guide pin with the lever in position "P" is as specified. Refer to specifications in the «GEARSHIFT LEVER ADJUSTMENT SPECIFICATIONS»(ref-56673-S24934884742001032600000) table. (Scheme 5) Tighten rear lock nut to 14-21 ft. lbs. (19-28 N.m).
  3. Place gearshift lever in "N" and "D" positions to ensure clearances are correct. See «GEARSHIFT LEVER ADJUSTMENT SPECIFICATIONS»(ref-56673-S24934884742001032600000) table. (Scheme 5) Adjust lever if necessary. Install boot plate, center console, indicator panel, selector sleeve, selector knob and upper panel. Connect negative battery cable.
Application(1) In. (mm)
Gearshift In Position "P"
Clearance "A".035-.039 (.89-.99)
Clearance "B".020-.024 (.51-.61)
Gearshift In Position "N" Or "D"
Clearance "C".024-.028 (.61-.71)
Clearance "D".059-.063 (1.50-1.60)
(1) Clearance between guide plate and guide pin. (Scheme 5)
(1)Clearance between guide plate and guide pin. (Scheme 5)

GEARSHIFT LEVER ADJUSTMENT SPECIFICATIONS

Scheme 4

Scheme 4
Scheme 4

Scheme 5

Scheme 5
Scheme 5

VACUUM DIAPHRAGM ROD

  1. If vacuum diaphragm (modulator) is replaced, vacuum diaphragm rod length (depth) must be checked for new rod length. Proper length rod should be installed after measurement.
  2. Unscrew vacuum diaphragm from case. Remove diaphragm, diaphragm rod and rubber "O" ring. Measure dimension "N" using Adjusting Gauge (49-G032-355). Use «VACUUM DIAPHRAGM ROD SELECTION»(ref-56673-S35996132802001032600000) table to select proper length rod. Also (Scheme 6)
Dimension "N" - In. (mm)Rod Length - In. (mm)
1.0099 (25.650) Or Less1.14 (29.0)
1.0099-1.0197 (25.650-25.900)1.16 (29.5)
1.0197-1.0394 (25.900-26.400)1.17 (29.7)
1.0394-1.0492 (26.400-26.650)1.18 (30.0)
1.0492-1.0689 (26.650-27.150)1.20 (30.5)
1.0689 (27.150) Or More1.22 (31.0)

VACUUM DIAPHRAGM ROD SELECTION

Scheme 6

Scheme 6
Scheme 6

NEUTRAL SAFETY SWITCH

  1. Place gearshift lever in "N" position. Ensure gearshift linkage is adjusted correctly. See «GEARSHIFT LINKAGE»(ref-56673-S23643907602001032600000) under ADJUSTMENTS. Loosen neutral safety switch mounting bolts at transmission. Remove screw from alignment pin hole at bottom of switch (if equipped).
  2. Insert a 5/64" (2.0 mm) alignment pin (or drill bit) through alignment holes.
  3. On all models, tighten mounting bolts to specification. See «TORQUE SPECIFICATIONS»(ref-56673-S12636463232001032600000) . Remove alignment pin. Install alignment pin hole screw (if equipped), and check switch operation. Vehicle should start only with gearshift in "P" or "N" position.

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