WARNING: This page is about a different car, the 2007 Subaru Outback and 2007 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

Clean the caliper body interior using brake fluid.
Apply a coat of brake fluid to the piston seal and fit piston seal in groove on caliper body.
Apply a coat of brake fluid to the entire inner surface of cylinder and outer surface of piston.
Apply a coat of specified grease to the boot and fit in to the groove on the ends of cylinder.
Grease:

NIGLUBE RX-2 (Part No. K0779GA102)
Insert the piston into cylinder.
CAUTION: Do not force the piston into cylinder.
Position the boot in the grooves on cylinder and piston.

Fig 1: Positioning Boot In Grooves On Cylinder And Piston (Rear Disc Brake)
Courtesy of SUBARU OF AMERICA, INC.
Apply a coat of specified grease to the guide pin, outer surface, sleeve outer surface, cylinder inner surface, and boot grooves.
Grease:

NIGLUBE RX-2 (Part No. K0779GA102)

Fig 2: Locating Grease Applying Point
Courtesy of SUBARU OF AMERICA, INC.
Install the guide pin boot on support.
Install the lock pin boot on support, and then insert the lock pin sleeve into specified point.

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

Rear Disc Brake Assembly: Assembly

Use the Manual With the Right Hardware

When to See a Mechanic