Second Brake Piston: Reassembly

INSTALL 2ND BRAKE PISTON O-RING
1. Coat 2 new O-rings with ATF and install them into the 2nd brake piston.
  
  Fig 1: Identifying & Coating 2 O-Rings Of 2nd Brake Piston
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL 2ND BRAKE PISTON
1. Press in the 2nd brake piston into the 2nd brake cylinder with your hands.
  
  Fig 2: Pressing 2nd Brake Piston Into 2nd Brake Cylinder
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL 2ND BRAKE PISTON RETURN SPRING SUB-ASSEMBLY
1. Install the piston return spring.
  
  Fig 3: Identifying Piston Return Spring
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Place SST on the piston return spring, and compress the piston return spring with a press.
  SST 09387-00060
3. Using a screwdriver, install the snap ring.
  NOTE: Be sure the end gap of the snap ring is not aligned with the piston return spring claw.
  
  Fig 4: Installing Snap Ring
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002