Engine JAC HFC4DA1-2C. Manual - part 137

BR

BR

BR

BR Brake

Brake

Brake

Brake System

System

System

System

- 68 -

Removal/installation

Removal/installation

Removal/installation

Removal/installation of

of

of

of vacuum

vacuum

vacuum

vacuum booster

booster

booster

booster

Caution:

Caution:

Caution:

Caution:

Don’t the make the brake fluid splashing onto the
paint surface. In case of any, please wash the
surface with clean water immediately.

Removal
1.

Disconnect the negative cable of battery.

2.

Disconnect the harness connector of the brake fluid
level warning switch.

3.

Disconnect the brake fluid circuit.

Note:

Note:

Note:

Note:

Plug the pipe orifice to avoid contamination by

dirt.

4.

Remove the brake line from the master cylinder.

5.

Remove the vacuum booster hose connector
carefully.

6.

Remove the clevis pin and spring clip from the
vacuum booster control rod of brake pedal.

BR

BR

BR

BR Brake

Brake

Brake

Brake System

System

System

System

- 69-

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

7.

Remove the brake switch.

�

Remove the harness connector.

8.

Remove the booster and master cylinder assembly.

9.

Separate the booster from the master cylinder.

Installation

1.

Install the vacuum booster.

2.

Install the booster control rod onto the brake pedal.

BR

BR

BR

BR Brake

Brake

Brake

Brake System

System

System

System

- 70 -

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

3.

Reinstall and debug the brake switch.

4.

Reinstall the master cylinder onto the booster.

Ensure proper position and clean joint surface for
sealing washer of vacuum pump.

5.

Reconnect the brake line.

6.

Reconnect the brake line with the master cylinder.

7.

Install the vacuum booster pipe connector.

8.

Connect the brake fluid level warning sensor
connector.

9.

Connect the negative cable of battery.

10. Bleed air out of brake system in accordance with

specification.

BR

BR

BR

BR Brake

Brake

Brake

Brake System

System

System

System

- 71-

Air

Air

Air

Air bleeding

bleeding

bleeding

bleeding for

for

for

for brake

brake

brake

brake system

system

system

system

Caution:

Caution:

Caution:

Caution:

Don’t the make the brake fluid splashing onto the
paint surface. In case of any, please wash the
surface with clean water immediately.

1.

Disconnect the ground wire of battery.

2.

Have the vehicle lifted.

3.

Connect the oil drain pipe to the air vent of four
wheels.

4.

Loosen the bleeder screw.

Note:

Note:

Note:

Note:

Keep the brake fluid reservoir cap clean.

5.

Open the brake fluid reservoir cap.

6.

Bleed air out of the front circuit.

Fill the fluid reservoir with brake fluid with the
brake pedal fully depressed, release the brake pedal
immediately and then hold the brake pedal
depressed. Loosen the bleeder screw of wheel
cylinder to bleed air out of system. Perform air
bleeding for wheels in the order of left rear, right
front, right rear and left front. Tighten the bleeder
screw once no air bubble is observed.