Diagnostic Manual, Chassis and Drivetrain,
Volume 2
Hydraulic Test Program - Test
 |
 |
Test scope |
Test connection
|
Test condition |
Nominal value |
Possible cause/Remedy |
| 1.0 |
|
ASR charging pump (M15)
|
 250 bar at "SP" |
Ignition: ON
(max. 60 seconds) |
1.8 - 11 bar
All: OFF
|
Wiring,
Hydraulic connections leak,
ASR charging pump (M15).
|
1
20
33 |
|
11
27
34 |
| 2.0 |
|
Return/pressure
pump motor (A7/3m1) |
250 bar at "SP"
 Warning
High Pressure
|
Engine: START
|
Pressure rises quickly to 50 - 110 bar, proceed to increase slowly to 150 - 200 bar.
Charging time:
max. 60 seconds.
|
3.0,
 23 38.0, 39.0,
Hydraulic connections leak,
Hydraulic unit (A7/3). |
| 3.0 |
|
Pressure reservoir |
250 bar at "SP"
Warning
High Pressure
|
Engine: START
|
Pressure rises quickly to 50 - 110 bar, proceed to increase slowly to 150 - 200 bar.
Charging time:
max. 60 seconds.
|
Hydraulic connections leak,
Presure reservoir. |
|
Printable version
