Subaru 2009 IMPREZA Service Manual page 2584

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C: DISASSEMBLY

1) Remove mud and foreign matter from the caliper

body assembly and the support.

Be careful not to allow foreign matter to enter

the brake hose connector.

2) Place a wooden block in the caliper body as

shown in the figure to prevent the piston from jump-

ing out and being damaged.

3) Gradually apply compressed air via the brake

hose installation hole to push the piston out.

(1) Place a wooden block of 30 mm (1.18 in) width.

4) Remove the piston boot.

5) Remove the piston seal from caliper body cylin-

Do not damage the cylinder and piston seal

(1) Piston seal

Front Disc Brake Assembly

6) Remove the guide pin and boot from caliper

1) Clean the inside of the caliper body using brake

2) Apply a coat of brake fluid to piston seal and in-

stall piston seal in the groove on caliper body.

3) Apply a coat of brake fluid to the inner surface of

cylinder and the entire outer surface of the piston.

4) Apply NIGLUBE RX-2 (Part No. 000041000) or

grease contained in the piston seal kit to the boot,

and install it to the groove at the end of the cylinder.

5) Insert the piston into cylinder.

Do not force the piston into cylinder.

(2) Piston boot

6) Position the boot in the grooves on cylinder and

(2) Piston boot

(3) Caliper body

(4) Piston seal

7) Apply NIGLUBE RX-2 (Part No. 000041000) or

grease contained in the piston seal kit to the lock

pin, guide pin outer surface, cylinder inner surface,

and boot grooves.