Mazda Transaxle FN4A-EL. Manual — part 14

K1–48

AUTOMATIC TRANSAXLE

Caution

••••

Do not use an impact wrench. Hold the manual shaft lever when removing the manual shaft nut, or
the transaxle may be damaged.

(7) Install the manual shaft lever and the washer.

(8) Set the adjustable wrench as shown to hold

the manual shaft lever, and tighten the
manual shaft nut.

Tightening torque

32—46 N·m

{3.2—4.7 kgf·m, 24—33 ft·lbf}

62. Remove the transaxle from the SST.
63. Apply ATF to the new O-ring and install it to the oil

filler tube.

64. Install the oil dipstick and oil filler tube to the

transaxle.

Tightening torque

7.9—10.7 N·m

{80—110 kgf·cm, 70—95.4 in·lbf}

65. Drain any ATF remaining in the torque converter.
66. Pour in solvent (approx. 0.5 L {0.53 US qt, 0.44 lmp qt}),
67. Shake the torque converter to clean the inside.
68. Pour out the solvent.
69. Pour the ATF.
70. Install the torque converter by aligning its gap to

the oil pump inner rotor gap as shown in the
figure.

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AUTOMATIC TRANSAXLE

K1–49

K1

71. To ensure that the torque converter is installed

accurately, measure distance A between the end
of the torque converter and the end of the
converter housing.

(A): 15.5 mm {0.609 in} (ZL, ZM)

21.5 mm {0.846 in} (FP, LF,L3)

End Of Sie

AUTOMATIC TRANSAXLE INSPECTION

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Torque Converter Inspection

1. Inspect the outer surface of the torque converter for damage or cracks, and replace it if necessary.
2. Inspect for rust on the pilot hub of the torque converter or on the boss. If there is any, remove the rust

completely.

Oil Pump Preinspection

1. Measure the bushing of the oil pump.

Bushing inner diameter

Torque converter side
Standard: 40.015—40.040 mm

{1.57539—1.57637 in}

Maximum: 40.060 mm {1.57716 in}

Forward clutch side
Standard: 19.000—19.021 mm

{0.74803—0.74885 in}

Maximum: 19.041 mm {0.74964 in}

2. If not as specified, replace the oil pump housing

and oil pump cover. (See Section K.)

Forward Clutch Preinspection
Clutch operation

1. Set the forward clutch onto the oil pump.

Caution

••••

Applying compressed air to the assembled clutch pack for longer than 3 seconds at a time will
damage the seal.
Do not apply compressed air for more than the aforementioned time when testing the system.

2. Inspect the clutch operation by applying

compressed air through the fluid passages
shown.

Air pressure

392 kPa {4.0 kgf/cm

2

, 57 psi} max.

3. If not as specified, replace parts as necessary.

(See Section K.)

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K1–50

AUTOMATIC TRANSAXLE

Clutch clearance

1. Measure the forward clutch clearance.

(1) Install the forward clutch in the oil pump, and set the dial gauge.
(2) Secure the forward clutch by lightly pressing

down with a press, etc.

(3) Apply compressed air to the part indicated in

the figure and let the forward clutch piston
stroke three times.

Air pressure

392—441 kPa {4.0—4.5 kgf/cm

2

, 57—63 psi}

(4) Apply compressed air and operate the

forward clutch piston. Read the value when
the indicator of the dial gauge stops.

(5) Release the compressed air and read the dial

gauge when the forward clutch piston is not
operating.

(6) Calculate the forward clutch clearance

according to the following formula:
Step (4) value – Step (5) value = Forward clutch clearance.

(7) Measure the clearances at four locations (90

°

apart) by following the steps from (3) to (6).
Verify that the average value is within the
specification below.

Forward clutch clearance

1.50—1.80 mm {0.059—0.071 in}

2. If not as specified, replace parts as necessary.

(See Section K.)

Clutch Component Preinspection
Clutch operation

1. Set the clutch component onto the end cover.

Caution

••••

Applying compressed air to the assembled clutch pack for longer than 3 seconds at a time will
damage the seal.
Do not apply compressed air for more than the aforementioned time when testing the system.

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AUTOMATIC TRANSAXLE

K1–51

K1

2. Inspect the clutch operation by applying

compressed air as shown.

Air Pressure

392 kPa {4.0 kgf/cm

2

, 57 psi} max.

3. If not as specified, replace parts as

necessary.(See

K1–18 CLUTCH COMPONENT

DISASSEMBLY/ASSEMBLY

.)

Reverse clutch clearance

1. Measure the reverse clutch clearance.

(1) Install the reverse clutch into the end cover, and set the dial gauge.
(2) Secure the reverse clutch by lightly pressing

down with a press, etc.

(3) Apply compressed air to the part indicated in

the figure and let the reverse clutch piston
stroke three times.

Air Pressure

392—441 kPa {4.0—4.5 kgf/cm

2

, 57—63 psi}

(4) Apply compressed air and operate the

reverse clutch piston. Read the value when
the indicator of the dial gauge stops.

(5) Release the compressed air and read the dial

gauge when the reverse clutch piston is not
operating.

(6) Calculate the reverse clutch clearance

according to the following formula: Step (4) value – Step (5) value = Reverse clutch clearance.

(7) Measure the clearances at four locations (90

°

apart) by following the steps from (3) to (6).
Verify that the average value is within the
specificatin below.

Reverse clutch clearance

1.00—1.30 mm {0.039—0.051 in}

2. If not as specified, replace parts as

necessary.(See

K1–18 CLUTCH COMPONENT

DISASSEMBLY/ASSEMBLY

.)

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