BMW X5: Overview Of Brake Master Cylinder / Brake Booster
.png)
Fig. 62: Identifying Brake Master Cylinder/Brake Booster Components
- Brake booster
- Expansion tank
- Vacuum hose
- Brake master cylinder
- Bleeding braking system
REMOVING AND INSTALLING / REPLACING EXPANSION TANK FOR HYDRAULIC BRAKE ACTUATION
Necessary preliminary tasks:
- Read and comply with General Information.
- Remove left microfilter housing cover.
NOTE: Extract brake fluid out of expansion tank. Use a suction bottle used exclusively for drawing off brake fluid.
Do not reuse drawn out brake fluid.
Unfasten plug connection (1) and disconnect.
Remove wiring harness from holder (2).
Release screw (3) and lift off expansion tank.
.png)
Fig. 63: Removing Wiring Harness From Holder
IMPORTANT: Check rubber plug in brake master cylinder for damage and replace if necessary.
Push the expansion tank vertically onto the master brake cylinder.
.png)
Fig. 64: Locating Rubber Plug In Brake Master Cylinder
REMOVING AND INSTALLING / REPLACING MASTER BRAKE CYLINDER FOR DSC
READ NEXT:
Removing And Installing / Replacing Master Brake Cylinder For DSC
Special tools required:
32 1 27032 1 270 PLUGS (SET)
Necessary preliminary tasks:
Remove expansion tank.
Read and comply with General Information.
After completing tasks, bleed brake system wit
Brake Lines
OVERVIEW OF BRAKE LINES
1. Brake hose, front.
2. Brake tubes.
3. Brake hose, rear, to body.
4. Brake hose, rear, to wheel brake cylinder.
REPLACING ALL BRAKE PIPES
Special tools required:
34 5 100
Brake Booster
REPLACING VACUUM HOSE FOR BRAKE BOOSTER (N52K)
IMPORTANT: Before beginning work, fully press the brake pedal several
times to reduce the
vacuum pressure in the brake booster. This makes it easier to
SEE MORE:
Depending on equipment
version: emergency brake
function, Active PDC
Principle
The emergency braking function of PDC initiates
an emergency braking in case of acute risk of
collision.
General information
Due to system limits, a collision cannot be prevented
under all circumstances.
The function is available below walking speed
when driving in reverse or rolling back
Removing And Installing/Replacing Chain Module For Oil Pump/Vacuum Pump
(N52K)
Special tools required:
00 9 140
11 0 290
11 0 300
11 4 120
11 4 280
11 4 360
11 4 362
11 4 440
11 5 200
11 9 280
IMPORTANT: Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical
corrosion.
A magnesium crankcase requires aluminium screws/
