Convertible Top Hydraulic Fluid: Testing and Inspection

54 34 ... - Topping up/extracting fluid, checking fluid level





Note:
No changing of the hydraulic fluid necessary.
- The hydraulic fluid does not have to be changed because the system is filled with life-time fluid.
- Only the approved hydraulic fluid may be used in the event of leaks.
- All hydraulic cylinders must be completely extended.
- The hydraulic system is automatically bled by repeated actuation.





Necessary preliminary tasks:
- Remove hydraulic control unit Service and Repair (hydraulic system closed / do not disconnect lines)

Important!
Protect components and work area with suitable materials (e.g. cloths).
Use only Aral Vitamol ZH-M fluid (refer to BMW Parts Service).
Do not allow fluid to flow over components.





Checking fluid level:
- Convertible top closed
- Close convertible top compartment lid
- To release, remove hydraulic control unit without lines from foam inlay.





Fluid level must be within the markings convertible top is closed and the control unit is horizontal.
1. Maximum
2. Minimum





Topping up fluid:
- Convertible top closed
- Close convertible top compartment lid
- To release, remove hydraulic control unit without lines from foam inlay.
- Total filling quantity: 450 - 500 ml





Open oil filler plug.
Tightening torque: 54 34 11AZ 54 34 Motor-Driven Convertible Top (Electrical Components).
Set down hydraulic control unit as pictured and pour in fluid quantity from fluid bottle (use a funnel if necessary).
Check fluid level in the meantime.

Important!
Do not overfill.





Extracting fluid:
- Convertible top closed
- Close convertible top compartment lid
- To release, remove hydraulic control unit without lines from foam inlay.
Open oil filler plug.
Tightening torque: 54 34 11AZ 54 34 Motor-Driven Convertible Top (Electrical Components).
Tilt hydraulic unit and let fluid flow out or draw off with a suitable auxiliary apparatus.