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Front Disc Brake Description (Freelander 2)

 
  • Main
  • Freelander
  • Freelander 2
  • Chassis
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  • Front Disc Brake Description
 
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Contents: Arrangement of elements ⇩ Brake disc ⇩ Assembled caliper ⇩ Brake dust shield ⇩

Arrangement of elements


NOTE: Front Disc Brake Shown for I6 Gasoline Engine; the front disc brake of the TD4 diesel engine is similar.


NOTE: Front Disc Brake Shown for I6 Gasoline Engine; the front disc brake of the TD4 diesel engine…


Pos.Spare part numberName
1-Anti-lock Brake System (ABS) Sensor Wire
2-ABS sensor mounting screw
3-Dust shield
4-Dust shield mounting screw (3 pcs.)
5-Brake disc
6-Brake disc mounting screw
7-External gasket that eliminates squealing
8-Outer brake shoe
9-Inner brake lining
10-Internal lining to eliminate squealing
11-Caliper housing spring
12-Fixed holder
13-Caliper piston seal
14-Caliper piston
15-Sliding support
16-Rubber boot for sleeve bolt (2 pcs.)
17-Sleeve bolt (2 pcs.)
18-Dust cover for sleeve bolt (2 pcs.)
19-Caliper Pressure Relief Screw
20-Pressure relief screw cover
21-Flexible hose
22-Fixed holder mounting bolt (2 pcs.)
23-Left front wheel steering knuckle

The front brake assembly is equipped with a ventilated brake disc and a cast iron sliding caliper with a single-acting piston.

Brake disc


Brake disc


Pos.Spare part numberName
A-Front Brake Disc - i6 Petrol Car
B-Front brake disc - TD4 diesel vehicle



The brake disc installed on a car with a 3.2-liter i6 petrol engine has dimensions of 316 x 28 mm.
The brake disc installed on a car with a 2.2L TD4 petrol engine has dimensions of 300 x 28 mm.

The brake disc is secured to the wheel hub with one screw and is also held in place by five wheel nuts.

The front brake discs of both sizes have ventilation channels, which makes the discs highly heat-resistant even under heavy braking. The disc is cooled when air is sucked through the ventilation channels and passes along the disc surfaces as the car moves forward.

Assembled caliper


#img3#


Pos.Spare part numberName
A-Front Brake Caliper - i6 Petrol Car
B-Front Brake Caliper - TD4 Diesel Vehicle


The caliper assembly includes a fixed support bracket and a floating caliper. The fixed support bracket is installed to cover the brake disc. The bracket is secured to the steering knuckle with two bolts. The fixed support bracket is used to accommodate two brake pads, which are installed on both sides of the brake disc. The bracket has guide channels that allow the brake pads to move in the direction of the disc.



NOTE: Two of the bolts in the fixed support bracket are pre-applied with thread locking compound that should not be used during servicing. New fixed support bracket bolts should be used and "old" bolts should be discarded.


A floating caliper is mounted above the fixed support bracket, inside which two brake shoes are held. The floating caliper is secured to the fixed support bracket by two bolts with bushings. It forms a hydraulic chamber, which contains a piston with a diameter of 60 mm and an annular seal.

The floating caliper is connected to the brake system hydraulic drive by a flexible hose. It has a screw for releasing air during maintenance.

The two bushed bolts are machined to a high-quality surface and protected from dirt and moisture by a deformable rubber boot. The bushed bolts allow limited lateral movement of the floating calipers along the fixed support bracket.

On the outer side of the brake disc is a spring housing, which is connected by special hooks between the fixed support bracket and the caliper. When the brakes are applied, the spring is tensioned when the caliper moves toward the brake disc. The spring facilitates the movement of the caliper away from the brake disc when the brakes are released.

The pressure adjusting lining is installed on the outer edge of each brake pad and improves the NVH (noise, vibration and harshness) characteristics of the brake components during system operation. The brake pads are not equipped with pad wear sensors.

Brake dust shield


The brake dust shield is located between the wheel knuckle and the brake disc and is attached to the knuckle with three screws. The brake dust shield faces the appropriate side of the vehicle and protects the brake components from stone impacts across the axle. The brake dust shield also prevents brake dirt and dust from spreading to other parts of the vehicle.


This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
Article review: Roman Mitrofanov


 

Previous articles
Brake system specifications
Description and operating principle of the brake system
Diagnostics and testing of the brake system
Road test of the brake system
Pinpoint tests of the brake system
Element checks
Bleeding the brake system
Front Disc Brake Specification

Current article
Front Disc Brake Description

Next articles
Operating principle of the front disc brake
Front brake pads
Front brake disc
Front Brake Caliper Support Plate
Rear Disc Brake Specification
Description of the rear disc brake
Operating principle of the rear disc brake
Rear brake pads

 
 

Similar articles from Land Rover repair manuals:
• Front Disc Brake Specification Discovery 3 (2004-2009)
• Brake disc (models without ABS) Discovery 1 (1989-1998)
• Checking the wear and runout of the front brake disc Range Rover 3 (2001-2012)
• Front disc brake Defender 2007+ (2007-2016)

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