Second brake piston

1. Remove 2nd brake piston return spring sub-assembly

1. 1
   Place sst on the return spring and compress.
2. 2
   Using a screwdriver, pry out the snap ring.
3. 3
   Remove the piston return spring.
4. 4
   Inspect 2nd brake piston return spring sub-assembly (see page ax-223)

   

3. Remove 2nd brake piston

1. 1
   Hold the 2nd brake piston and apply compressed air (392 kpa, 4.0Kgf/cm2, 57 psi) to the 2nd brake cylinder to remove the 2nd brake piston.
2. 2
   Remove 2nd brake piston o-ring

   

1. Remove the 2 o-rings from the 2nd brake piston.

1. Inspect 2nd brake piston return spring sub-assembly

1. Using a vernier caliper, measure the free length of the spring together with the spring seat.

1. Install 2nd brake piston o-ring

1. 1
   Coat the 2 new o-rings with atf, and install them into the 2nd brake piston.
2. 2
   Install 2nd brake piston

   

1. 1
   Press in the 2nd brake piston into the 2nd brake cylinder with your hands.
2. 2
   Install 2nd brake piston return spring sub-assembly

   

1. 1
   Install the piston return spring.
2. 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.

Be sure the end gap of the snap ring is not aligned with the piston return spring claw.