BMW 5 series E39

Since 1996-2001 of release

Repair and car operation



BMW E39
+ Introduction
+ The maintenance instruction
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ The power supply system and release
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
- Brake system
   Antiblocking system
   Removal and installation of lobbies brake колодок
   Removal and installation of a brake disk / of a support of a forward brake
   Removal and installation back brake колодок
   Removal and installation of back brake supports
   Removal and installation of a brake disk of back wheels
   Measurement of a thickness of a brake disk
   Brake liquid
   Removal of air from brake system
   Replacement of brake pipelines
   Replacement of a forward brake hose
   Check of the vacuum amplifier of a brake
   Removal and installation brake колодок a lay brake
   Adjustment of a lay brake
   Removal and installation of the lever of a lay brake
   Removal and installation of a cable of a lay brake
   Check and replacement of the switch of a stoplight
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes
+ System of onboard diagnostics



Check of the vacuum amplifier of a brake

If for achievement of necessary brake effort it is necessary to make considerable effort a brake pedal, it is necessary to check up the vacuum amplifier of a brake.

 PERFORMANCE ORDER

1. Press a brake pedal at the idle engine not less than 10 times. Then, without releasing a pedal, start the engine. Thus pressure of a pedal of a brake under effort of a foot should weaken. In this case the vacuum amplifier is serviceable.
2. Otherwise disconnect a vacuum hose from the amplifier and start the engine. Put a finger to the end of a vacuum hose and check up, whether there is a vacuum.
3. If the vacuum is not present: Check up tightness of a vacuum hose and presence of damages. If necessary replace. Tighten all collars.
4. The diesel engine: Disconnect a vacuum hose from the vacuum pump and check up a finger vacuum presence.
5. If the vacuum is: Measure value of vacuum. If necessary replace the vacuum amplifier (work HUNDRED).

Thus necessarily replace the return valve in the vacuum pipeline, since. The diaphragm in the amplifier can be damaged owing to penetration of steams of fuel (at the petrol engine and the damaged return valve). Arrows on the return valve should specify in a direction of the inlet pipeline.