Front Planetary Ring Gear: Removal

Remove the No. 3 brake cylinder. Ref. to AUTOMATIC TRANSMISSION>NO. 3 BRAKE CYLINDER>REMOVAL .

Remove the one-way clutch and No. 1 planetary carrier thrust washer.

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(A)	One-way clutch
(B)	No. 1 planetary carrier thrust washer
(C)	Transmission case

Remove the one-way clutch inner race and the front planetary gear.

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(A)	One-way clutch inner race
(B)	Front planetary gear
(C)	Transmission case

Check the one-way clutch.

Install the one-way clutch to the one-way clutch inner race.

Check that when it is turned clockwise it is locked, whereas when it is turned counterclockwise it turns freely.

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If it turns freely when turned clockwise or if it is locked when turned counterclockwise, replace with a new one-way clutch.

Check the front planetary gear.

Measure the pinion gear thrust clearance using a thickness gauge.

Specification:

0.2 - 0.6 mm (0.01 - 0.02 in)

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Measure the front planetary gear inner diameter using a cylinder gauge.

Specification:

48.78 mm (1.920 in)

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If the value exceeds the specification, replace the front planetary gear with a new part.

Remove the front planetary flange rear thrust bearing race, front planetary flange thrust needle roller bearing, and No. 2 planetary carrier thrust washer.

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(A)	Front planetary flange rear thrust bearing race
(B)	Front planetary flange thrust needle roller bearing
(C)	No. 2 planetary carrier thrust washer
(D)	Transmission case

Remove the front planetary ring gear set.

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(A)	Front planetary ring gear set
(B)	Transmission case

Remove the No. 1 brake flange, No. 1 brake discs, and No. 1 brake plates.

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(A)	No. 1 brake flange
(B)	No. 1 brake disc
(C)	No. 1 brake plate
(D)	Transmission case

Check the No. 1 brake flange, No. 1 brake discs, and No. 1 brake plates.

Check for wear, damage, deformation, discoloration and seizure.

Replace with a new part if defective.

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Stack the No. 1 brake flange (A), No. 1 brake disc (B), and No. 1 brake plate (C), and measure and record the thickness "T".

NOTE: Measure at four points at 90° intervals and calculate the average.

Service limit:

14.50 mm (0.571 in)

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If the value is equal to or less than the service limit, perform the following operations. 1) Replace with new No. 1 brake discs and new No. 1 brake plates, and perform the step 3 again to measure and record the thickness.
Initial standard:

14.50 - 15.54 mm (0.571 - 0.612 in)

Check the piston stroke of No. 1 brake piston.

Place the surface plate on a weight scale, and place the transmission case on the surface plate.
Adjust the reading of the weight scale to the zero point.

Place a weight so that the reading value of the weight scale becomes 0.5 kg (1.10 lb) or less. Then measure height "H" from the top of the No. 1 brake piston (A) to the mounting surface of the No. 1 brake flange (B).

NOTE:

Measure at four points at 90° intervals and calculate the average.
If the value is outside the specification, check the No. 1 brake cylinder.

Specification:

15.27 - 15.92 mm (0.601 - 0.627 in)

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Calculate the piston stroke "S" using the following formula.

Specification:

0.42 - 0.72 mm (0.017 - 0.028 in)

S = H - T

S	Piston stroke mm (in)
H	Measured value (mm (in)) of (2)
T	Measured value (mm (in)) of step 8. (3)

If the value exceeds the specification, adjust the thickness of the No. 1 brake flange so that the value is within the initial standard.
Initial standard:

14.50 - 15.54 mm (0.571 - 0.612 in)