Rear Disc Brake Assembly: Installation

WARNING: This page is about a different car, the 2015 Subaru XV Crosstrek and 2015 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before installation, remove the pad clip and remove mud, foreign matter and rust from the caliper body assembly and the support - rear disc brake.

Before installation, check each part. < Ref. to INSPECTION , Rear Disc Brake Assembly.>
Apply a thin coat of grease contained in the pad kit to the support - rear disc brake.
Grease:

An item contained in the pad kit, Molykote M7439 or equivalent

Fig 1: Identifying Grease Applying Area On Rear Disc Brake Support Pad Kit
Courtesy of SUBARU OF AMERICA, INC.
Install the support - rear disc brake to the housing assembly - rear axle.
Tightening torque:

Mounting bolt: 66 N.m (6.73 kgf-m, 48.7 ft-lb)
Apply a thin coat of grease to the pad clip.
Grease:

An item contained in the pad kit, Molykote M7439 or equivalent

Fig 2: Identifying Grease Applying Area On Rear Axle Of Housing Assembly
Courtesy of SUBARU OF AMERICA, INC.
Apply a thin coat of grease to the shim - disc brake rear inner (a) and the shim - disc brake rear outer (b).
Grease:

Grease contained in the pad kit or WAKO grease V160

Fig 3: Identifying Grease Applying Area On Disc Brake Shim
Courtesy of SUBARU OF AMERICA, INC.
Install the pad clip.
Press back the piston with a disc brake piston tool as needed.
CAUTION: When pressing back the piston, the clearance between pad and disc rotor becomes large, which makes the brake pedal effort softer.
After the installation of rear wheel, be sure to perform the adjustment of the clearance and the pedal effort by depressing the brake pedal several times.
Install the brake pad to the support - rear disc brake.
Install the caliper body assembly to the support - rear disc brake.
Tightening torque:

Caliper bolt: 27 N.m (2.75 kgf-m, 19.9 ft-lb)
Install the brake hose bracket.
Tightening torque:

Brake hose bracket: 33 N.m (3.36 kgf-m, 14.3 ft-lb)
Connect the brake hose using a new brake hose gasket.
Tightening torque:

Union bolt: 26 N.m (2.65 kgf-m, 19.2 ft-lb)
Bleed air from the brake system. < Ref. to BRAKE LINE , PROCEDURE, Air Bleeding.>
Install the rear wheels.
Tightening torque:

Except for C4 model: 120 N.m (12.24 kgf-m, 88.5 ft-lb)

C4 model: 100 N.m (10.20 kgf-m, 73.8 ft-lb)