Nissan Murano: Brake System :: Unit Disassembly and Assembly / Front Disc Brake

Exploded View

1.	Torque member	2.	Bushing	3.	Piston boot
4.	Slide pin boot	5.	Slide pin	6.	Piston
7.	Piston seal	8.	Brake caliper body	9.	Brake hose
10.	Copper sealing washers	11.	Bleeder cap	12.	Inner shim cover
13.	Inner shim	14.	Inner pad	15.	Pad retainer
16.	Anti-rattle clip	17.	Outer pad	18.	Outer shim
19.	Outer shim cover	A.	Nigrove Rx-2	B.	Rubber grease
C.	Molykote® AS-880N
: Apply brake fluid.

DISASSEMBLY

Remove the brake caliper from the vehicle. Refer to Removal and Installation.

Remove slide pins and slide pin boots from torque member.

Place a wooden block in brake caliper body and blow air from union bolt hole to remove pistons and piston boots.

WARNING:

Do not get fingers caught between pistons and brake caliper body.

CAUTION:

Do not reuse piston boots.

Remove piston seals from brake caliper body using suitable tool.

CAUTION:

• Do not damage cylinder inner wall.

• Do not reuse piston seals.

Remove bleeder valve and cap.

INSPECTION AFTER DISASSEMBLY

Brake Caliper Body

Check the inner wall of the brake caliper body for rust, wear, cracks or damage. Replace the brake caliper body if any abnormal condition is detected.

CAUTION:

Always clean with new brake fluid. Do not clean with mineral oil such as gasoline and light oil.

Torque Member

Check the torque member for rust, wear, cracks or damage. Replace the torque member if any abnormal condition is detected.

Piston

Check the surface of the piston for rust, wear, cracks or damage. Replace the piston if any abnormal condition is detected.

CAUTION:

Piston sliding surface is plated. Do not polish with sandpaper.

Slide Pin and Slide Pin Boot

Check the slide pins and slide pin boots for rust, wear, cracks or damage. Replace the parts if any abnormal condition is detected.

ASSEMBLY

Install bleeder valve and cap.

Apply rubber grease to each piston seal (1), and install them to the brake caliper body.

CAUTION:

Do not reuse piston seal.

Apply rubber grease to the piston boots. Cover each piston end with a piston boot, and then install cylinder side lip on piston boot securely into a groove on brake caliper body.

CAUTION:

Do not reuse piston boots.

Apply brake fluid to each piston (1). Push each piston into cylinder body by hand and push piston boot (2) piston-side lip into the piston groove.

CAUTION:

Press the piston evenly and vary the pressing point to prevent cylinder inner wall from being rubbed.

Apply rubber grease to bushing; install bushing to slide pin.

Apply rubber grease to slide pin boots. Install slide pin boots to torque member.

Apply Nigrove Rx-2 to slide pins. Install slide pins to torque member.

Install the brake caliper to the Nissan Murano vehicle. Refer to Removal and Installation.

INSPECTION AFTER INSTALLATION

Check the drag of front disc brake. If any drag is found, follow the procedure described below.

Remove brake pads.

Using a suitable tool, press the pistons into the brake caliper body.

CAUTION:

Do not damage the piston boots.

Install brake pads.

Depress the brake pedal several times.

Check the drag of front disc brake again. If any drag is found, disassemble the brake caliper body.

Burnish contact surfaces after refinishing or replacing disc brake rotors or if a soft pedal occurs at very low mileage. Refer to Brake Pedal.