23 42 551 Replacing Hydraulic Pump GS6S53BZ (SMG)
WARNING: This page is about a different car, the 2007 BMW 550i and 2006 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
- Disconnect HYDRAULIC PUMP RELAY in electronics box
Do not reconnect relay for entire duration of repair work
- Reduce pressure in hydraulic system by means of Service Function in DIS Tester
Before working on hydraulic system:
Installation:
Replace hydraulic pump relay.
NOTE:
- Check FLUID LEVEL IN HYDRAULIC SYSTEMby means of DIS Tester "Service Function"
- Perform "Bleed hydraulic system" service function by means of DIS Tester
- Perform "Teach in transmission" service function by means of DIS Tester
After completing work:
Necessary preliminary tasks:
- Remove underbody protection
- Remove right heat shield
Release screw (1) and remove grounding strap.
Release screws (1).
Tightening torque 23 41 7AZ . See EXTERNAL GEARSHIFT COMPONENTS for specs.
Remove plate (2).
Unclip cable (1) from mounting (2).
Release plug connection (1) from mounting and disconnect.
Detach line (1).
Release bolts (2).
Tightening torque 23 41 7AZ/12AZ . See EXTERNAL GEARSHIFT COMPONENTS for specs.
Remove hydraulic pump.
Installation:
Replace sealing ring.
Moisten sealing ring (1) with Pentosin and push onto tank fitting.
NOTE:
After completing work:
- Check FLUID LEVEL IN HYDRAULIC SYSTEMby means of DIS Tester "Service Function"
- Perform "Bleed hydraulic system" service function by means of DIS Tester
- Perform "Teach in transmission" service function by means of DIS Tester