Second Brake Piston: Reassembly

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

INSTALL 2ND BRAKE CYLINDER O-RING
1. Coat 2 new 2nd brake cylinder O-rings with ATF, and install them into the 2nd brake cylinder.
  NOTE: Do not damage the O-rings.
  
  Fig 1: Identifying 2nd Brake Cylinder O-Rings
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL 2ND BRAKE PISTON
1. Coat the 2nd brake piston with ATF, and install it into the 2nd brake cylinder.
  CAUTION: Do not damage the O-rings when pressing the 2nd brake piston into the 2nd brake cylinder by hand.
  
  Fig 2: Identifying 2nd Brake Piston
  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.
3. Using a screwdriver, install the snap ring.
  NOTE: Make sure that the end gap of the snap ring is not aligned with the piston return spring claw.
  
  Fig 4: Identifying Snap Ring
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002