Front Disc Brake Land Rover Range Rover L322

SPECIFICATIONS

TORQUE SPECIFICATIONS VEHICLES WITHOUT HIGH PERFORMANCE BRAKES

TORQUE SPECIFICATIONS VEHICLES WITH HIGH PERFORMANCE BRAKES

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GENERAL

The front brakes on all models feature ventilated brake discs with different diameter brake discs dependent on the vehicle variant. See Specifications .

The standard-brakes feature twin-piston sliding calipers and the high-performance brakes feature 6 piston fixed calipers.

On all models the brake caliper is attached to the rear of the front knuckle. The brake pads are made from an asbestos free material. The inboard brake pad of the left front brake incorporates a wear sensor.

With the standard brake sliding calipers, when hydraulic pressure is supplied to the caliper, the pistons extend and force the inner pad against the brake disc. The caliper body reacts and slides on the guide pins to bring the outer pad into contact with the brake disc.

With the high performance fixed calipers, when hydraulic pressure is supplied to the caliper, the three pairs of opposed pistons extend in the caliper. The three pistons in each side of the caliper force their related brake pads against the brake disc.

The front brake pad wear sensor is connected in series with the rear brake pad wear sensor, between the instrument cluster and ground. When a brake pad incorporating a brake pad wear sensor is approximately 75% worn, the brake pad wear sensor goes open circuit. When the instrument cluster detects the open circuit, it illuminates the brake warning indicator, displays an appropriate warning in the message center and sounds a warning chime. Refer to Instrument Cluster .

At the beginning of each ignition cycle, the instrument cluster performs a bulb check on the brake warning indicator.

For additional information. Refer to Brake System .

REMOVAL

Note. LH illustration shown, RH is similar.

Note. Some variation in the illustrations may occur, but the essential information is always correct.

Note. The brake pad wear warning indicator sensor must be replaced each time the brake pads are serviced.

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1. Raise and support the vehicle.
2. Remove the front wheel and tire.
3. See figure CAUTION: The brake pad wear indicator sensor is easily damaged. Do not use a lever to remove the sensor. Use fingers only. LH side front: Disconnect the brake pad wear indicator sensor wiring harness.
4. See figure NOTE: Use an additional wrench to prevent the component from rotating. Remove the brake caliper lower bolt.
5. See figure NOTE: Note the orientation of the brake pads. Remove the brake pads. Rotate the brake caliper upwards. Remove the 2 clips.
6. See figure CAUTION: Do not allow the brake caliper to hang on the brake hose. Remove the brake caliper. Remove the brake caliper anchor bolts. Tie the brake caliper aside.
7. See figure Remove the front brake disc. Remove the Allen screw.

INSTALLATION

1. Make sure the brake disc and hub mating surfaces are clean.
2. Install the brake disc. Tighten the Allen screw to 16 Nm (12 lb.ft).
3. Install the brake caliper. Clean the component mating faces. Tighten the bolts to 275 Nm (203 lb.ft).
4. Clean the brake caliper housing and anchor plate using brake cleaning fluid.
5. Inspect the caliper piston and slide pin seals for damage.
6. Check the slide pins for correct operation.
7. Position a bleed jar containing a small quantity of approved brake fluid. Connect the bleed tube to the bleed screw and loosen the screw.
8. Press the pistons into the caliper housing. Tighten the bleed screw to 10 Nm (7 lb.ft).
9. Disconnect the bleed tube and remove the jar.
10. Install the brake pads. Install the 2 clips. Apply a suitable amount of the supplied grease to the mating faces of the brake pads and brake calipers.
11. Rotate the brake caliper downwards. Tighten the bolt to 32 Nm (24 lb.ft).
12. LH side front: Connect the brake pad wear indicator wiring harness.
13. Install the wheel and tire. Tighten the wheel nuts to 140 Nm (103 lb.ft).
14. Depress the brake pedal several times, check the fluid level in the brake fluid reservoir and top-up with brake fluid if necessary.

Note. LH illustration shown, RH is similar.

Note. The brake pad wear warning indicator sensor must be replaced each time the brake pads are serviced.

Scheme 7

1. Raise and support the vehicle.
2. Remove the wheel and tire.
3. See figure CAUTION: Do not allow the brake caliper to hang on the brake hose. CAUTION: LH side: Do not allow the brake caliper to hang on the brake pad wear warning sensor lead. Remove the brake caliper anchor bolts. Release the brake caliper. Tie the brake caliper aside.
4. See figure Remove the brake disc. Remove the Allen screw.

1. Make sure the brake disc and hub mating surfaces are clean.
2. Install the brake disc. Tighten the Allen screw to 16 Nm (12 lb.ft).
3. Install the brake caliper and tighten the bolts to 275 Nm (203 lb.ft) Clean the component mating faces.
4. Install the wheel and tire. Tighten the wheel nuts to 140 Nm (103 lb.ft).
5. Depress the brake pedal several times, check the fluid level in the brake fluid reservoir and top-up with brake fluid if necessary.

Note. Some variation in the illustrations may occur, but the essential information is always correct.

Note. The brake pad wear warning indicator sensor must be replaced each time the brake pads are serviced.

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1. Raise and support the vehicle.
2. Remove the wheels and tires.
3. See figure LH side front: Disconnect the brake pad wear indicator sensor wiring harness.
4. See figure Release the antilock brake system (ABS) junction box cover.
5. See figure LH side front: Release and disconnect the brake pad wear indicator wiring harness.
6. See figure NOTE: Use an additional wrench to prevent the component from rotating. Remove the brake caliper lower bolt.
7. See figure Remove the brake pads. Rotate the brake caliper upwards. Remove the 2 clips.
8. Repeat the above 2 steps for the other side.

1. Clean the brake caliper housing and anchor plate using brake cleaning fluid.
2. Inspect the caliper piston and slide pin seals for damage.
3. Check the slide pins for correct operation.
4. Position a bleed jar containing a small quantity of approved brake fluid. Connect the bleed tube to the bleed screw and loosen the screw.
5. Press the pistons into the caliper housing. Tighten the bleed screw to 10 Nm (7 lb.ft).
6. Disconnect the bleed tube and remove the jar.
7. Install the brake pads. Install the 2 clips. Apply a suitable amount of the supplied grease to the mating faces of the brake pads and brake calipers.
8. Rotate the brake caliper downwards. Tighten the bolt to 32 Nm (24 lb.ft).
9. Repeat the above procedure for the other side.
10. LH side front: Connect and attach the brake pad wear indicator wiring harness electrical connection.
11. Secure the ABS junction box cover.
12. LH side front: Connect the brake pad wear indicator wiring harness.
13. Install the wheels and tires. Tighten the wheel nuts to 140 Nm (103 lb.ft).
14. Depress the brake pedal several times, check the fluid level in the brake fluid reservoir and top-up with brake fluid if necessary.

Note. The brake pad wear warning indicator sensor must be replaced each time the brake pads are serviced.

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1. Raise and support the vehicle.
2. Remove the wheels and tires.
3. See figure LH side front: Disconnect the brake pad wear indicator sensor wiring harness.
4. See figure Release the antilock brake system (ABS) junction box cover.
5. See figure LH side front: Release and disconnect the brake pad wear indicator wiring harness.
6. See figure NOTE: Note the orientation of the brake pads. NOTE: Note the orientation of the anti-rattle spring prior to removal. Remove the front brake pads. Remove the 2 retaining pins. Remove the anti-rattle spring. Remove the bridge bolt from the center of the caliper.
7. Repeat the above step for the other side.

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1. Clean the components.
2. Inspect the caliper piston seals for damage.
3. Position a bleed jar containing a small quantity of approved brake fluid. Connect the bleed tube to the bleed screw and loosen the screw.
4. Press the pistons into the caliper housing. Tighten the bleed screw to 19 Nm (14 lb.ft).
5. Repeat the above process for the other 3 pistons.
6. Disconnect the bleed tube and remove the jar.
7. See figure Apply grease LR020972 (Molykote CU7439 plus) to the areas indicated on the brake pads.
8. Install the brake pads. Tighten the bridge bolt to 30 Nm (22 lb.ft.). Position the anti-rattle spring. Install the pins, making sure the pin collets are fully engaged in the caliper.
9. Repeat the above procedure for the other side.
10. LH side front: Connect the brake pad wear indicator wiring harness electrical connection.
11. Secure the ABS junction box cover.
12. LH side front: Connect the brake pad wear indicator wiring harness.
13. Install the wheels and tires. Tighten the wheel nuts to 140 Nm (103 lb.ft).
14. Depress the brake pedal several times, check the fluid level in the brake fluid reservoir and top-up with brake fluid if necessary.

Note. Removal steps in this procedure may contain installation details.

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1. Raise and support the vehicle.
2. Remove the wheel and tire.
3. See figure CAUTION: The brake pad wear indicator sensor is easily damaged. Do not use a lever to remove the sensor. Use fingers only. LH side only: Disconnect the brake pad wear indicator sensor.
4. See figure NOTE: Use an additional wrench to prevent the component from rotating. Remove the brake caliper lower bolt.
5. See figure WARNING: Be prepared to collect escaping fluid. CAUTION: Before disconnecting or removing components, ensure the area around the joint faces and connections are clean. Plug open connections to prevent contamination. Disconnect the brake hose from the brake caliper. Remove the union. Remove and discard the two sealing washers. Install blanking caps to the exposed ports.
6. See figure NOTE: Note the orientation of the brake pads. Remove the brake pads. Rotate the brake caliper upwards. Remove the two clips.
7. See figure NOTE: Use an additional wrench to prevent the component from rotating. Remove the brake caliper housing. Remove the brake caliper upper bolt. Remove the brake caliper housing.

1. Clean the brake caliper housing and anchor plate using brake cleaning fluid.
2. Check for correct operation. Check the caliper slide pins. Check the condition of the caliper slide pin seals.
3. Install the brake caliper. Tighten the brake caliper upper bolt to 35 Nm (26 lb.ft).
4. Install the brake pads. Install the two clips. Apply a suitable amount of the supplied grease to the mating faces of the brake pads and brake calipers.
5. Rotate the brake caliper downwards. Tighten the brake caliper lower bolt to 35 Nm (26 lb.ft).
6. Connect the brake hose to the brake caliper. Clean the component mating faces. Remove the blanking caps from the ports. Install new sealing washers. Tighten the brake hose union to 32 Nm (24 lb.ft).
7. LH side only: Connect the brake pad wear indicator sensor. Secure in the clip.
8. Bleed the brake caliper. Refer to «Component Bleeding - Vehicles With: Standard Brakes»(/land-rover/range-rover/l322-2009-2012/remont/brakes/#brake-system-general-information__component-bleeding) .
9. Install the wheel and tire. Tighten the wheel nuts to 140 Nm (103 lb.ft).

Note. Removal steps in this procedure may contain installation details.

Note. Some variation in the illustrations may occur, but the essential information is always correct.

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1. Raise and support the vehicle.
2. Remove the wheel and tire.
3. See figure CAUTION: The brake pad wear indicator sensor, which is installed on the left hand side only, is easily damaged. Do not use a lever to remove the sensor.
4. Torque: 32 Nm
5. See «Brake Pads - Vehicles With: High Performance Brakes»(/land-rover/range-rover/l322-2009-2012/remont/mechanical-hydraulic/#front-disc-brake) .
6. Torque: 275 Nm

1. To install, reverse the removal procedure.
2. Bleed the brake system. Refer to «Component Bleeding - Vehicles With: High Performance Brakes»(/land-rover/range-rover/l322-2009-2012/remont/brakes/#brake-system-general-information__component-bleeding-vehicles-with-high-performance) .

See also:
• Instrument Cluster
• Brake System
• Component Bleeding - Vehicles With: Standard Brakes
• Component Bleeding - Vehicles With: High Performance Brakes
• Specifications
• Brake Pads - Vehicles With: High Performance Brakes