Geely Emgrand X7. Manual part — 387

Installation procedure:

1. Align marks of brake disc and axle wheel hub, and

install brake disc.

NL06-0026b

2. Install brake caliper support and tighten bolt.

Torque: 40Nm (Metric) 29. 6lb-ft(English system)

3. Install brake pad.

4. Install parking brake cable.

5. Install the rear wheels

6. Lower the vehicle.

Notes:

Similarly disassembly method of left/right rear brake
disc.

NL06-0027b

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6.4 Hydraulic Brake

6.4.1 Specifications

6.4.1.1 Fastener specifications

Torque Range

Fastener Name

Model

Metric (N.m)

English system

(lb-ft)

Brake Master Cylinder Retaining Nut

M8

16 - 22

11.8 - 16.3

Brake hose connector nut

M8

16 - 22

11.8 - 16.3

Vacuum Booster Retaining Nut

M8

16 - 22

11.8 - 19.2

The fixing bolt of brake pedal assembly

M8×20

16 - 26

11.8 - 19.2

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6.4.2 Description and operation

6.4.2.1 Description and operation

The hydraulic brake system comprises the following parts:

Brake pedal: receiving, amplifying and transmitting the input force of the brake system from the driver.

Brake pedal push rod: transmitted to the vacuum booster through the amplified output force of the brake pedal.

Vacuum booster: the input force of the brake system is increased through the brake pedal, and then transmitted to
the vacuum booster through the brake pedal push rod, and applied to the hydraulic brake master cylinder through
the assistance of the vacuum booster. The vacuum booster utilizes the vacuum source for assistance to reduce the
control force of the brake pedal applied by the driver.

Vacuum hose: used for transporting the vacuum source needed to the vacuum booster.

Brake master cylinder fluid reservoir: the inside is equipped with brake fluid used for hydraulic brake system.

Brake master cylinder: the mechanical input force is converted into the hydraulic output pressure which is
distributed to two hydraulic oil paths from the master cylinder for providing oil to the diagonal wheel brake oil
path.

Brake hard tube and brake hose: transmit the brake fluid to flow through various parts of the hydraulic brake
system.

Brake wheel cylinder: converting the hydraulic input pressure into the mechanical output force.

System operation:

The mechanical force from the brake pedal is converted into the oil pressure via the master cylinder, which is
conveyed to the brake cylinder through the brake hard tube and the hose after the adjustment of the hydraulic
electronic control unit (i.e., HECU), then the oil pressure is converted into the mechanical force through the brake
cylinder so that the brake pad compresses the brake disc to brake the vehicle.

Brake fluid level too low warning lamp

When detecting that the brake fluid level is too low (signal circuit is low potential), the combination instrument
will turn on the warning lamp on low brake fluid level.

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6.4.3 Component position

6.4.3.1 Component position

1

2

3

NL06-1003b

1. Brake master pump fluid reservoir

2. Vacuum booster

3. Brake main pump.

1550