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E88 Complete Vehicle
Convertible Top Hydraulic Circuit Components
The convertible top hydraulic control unit consists of the electric motor with hydraulic
pump, fluid reservoir, valve block and relays. The hydraulic control unit powers all the
movements of the convertible top using 3 cylinder pairs.
Each cylinder pair controls either:
• the convertible top main pillars
• the convertible top roll bar
• the top storage compartment cover or (lid).
Index Explanation Index Explanation
1
Hydraulic control unit
3
Cylinder pair for the top storage
compartment
lid
2
Cylinder pair for the main pillars
4
Cylinder pair for the roll bar
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