BEARING POSITION

Fig 1: Checking Bearing Position

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Bearing diameter

BEARING DIAMETER SPECIFICATION

Mark	Front Race Diameter Inside / Outside	Thrust Bearing Diameter Inside / Outside	Rear Race Diameter Inside / Outside
A	73.6 mm (2.898 in.) /102.0 mm (4.016 in.)	71.9 mm (2.831 in.) / 85.6 mm (3.370 in.)	-
B	38.0 mm (1.496 in.) / 57.0 mm (2.244 in.)	43.4 mm (1.709 in.) / 58.3 mm (2.295 in.)	-
C	-	55.7 mm (2.193 in.) / 76.4 mm (3.008 in.)	53.7 mm (2.114 in.) / 74.0 mm (2.913 in.)
D	33.4 mm (1.315 in.)/49.0 mm (1.929 in.)	32.1 mm (1.264 in.) / 49.35 mm (1.943 in.)	32.1 mm (1.2649 in.)/49.0 mm (1.929 in.)
E	-	21.5 mm (0.847 in.) / 40.8 mm (1.606 in.)	-
F	48.5 mm (1.909 in.) / 62.7 mm (2.469 in.)	45.9 mm (1.807 in.) / 64.0 mm (2.520 in.)	-

INSTALL NO. 4 BRAKE PISTON
1. Coat 2 new O-rings with ATF, and install them to the brake reaction sleeve.
2. Coat 2 new O-rings with ATF, and install them to the No. 4 brake piston.
3. Install the No. 4 brake piston to the reaction sleeve.
  
  Fig 2: Identifying No. 4 Brake Piston O-Rings
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL BRAKE REACTION SLEEVE
1. Coat a new O-ring with ATF, and install it to the reaction sleeve.
2. With the No. 1 brake piston underneath (the rear side), install the brake reaction sleeve and No. 1 brake piston to the transmission case.
  NOTE: Be careful not to damage the O-rings.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Automatic Transmission Unit: Reassembly