1 Series 120i (N43) Convertible
54 34 ...
Repair instructions for convertible top hydraulic system
1.
Definitions of terms
Hydraulic system
(untensioned state):
•
Turn ignition lock to "0" position.
•
Convertible top slowly collapses in
extreme position under its own weight
•
Open shut-off valve for emergency
opening
Short circuit in hydraulic system
Observe Point 3
Mechanical actuation:
Emergency actuation:
•
Convertible top is opened or closed by
hand
•
Always move convertible top with aid of
a second person
Observe Point 3
Closed system:
•
All lines are connected
Function Test:
•
Open and close convertible top several
times (min. 3 times)
•
Check can be carried out on convertible
top while removed
•
Check fluid level in hydraulic unit; if
necessary, top up fluid
refer to Owner's Handbook
Convertible top stowed:
•
Convertible top fully open (folded
together)
When convertible top is installed, it
rests on the stowage shelf
2.
When working on hydraulic system, observe the following
-
After it has been removed, the convertible top must be safely set down or spread out.
The special tool must be used.
The universal lifter is absolutely required here.
-
When the hydraulic system is open (unscrewing of lines, topping up of fluid, etc.), always provide sufficient
cloths to catch leak-off fluid.
Also provide an adherent protective cover to cover/protect fittings.
-
When opening the hydraulic system, make absolutely sure that no dirt, dust or chips can get into the hydraulic
circuit.
-
Disconnect feed and return lines if possible at a later stage, when the convertible top is stowed and
untensioned (check fluid, see also Point 3).
-
Once the hydraulic system has been opened, first check the fluid level after completing the tasks before
carrying out a function test.
-
After disconnecting the hydraulic lines from hydraulic components, do not move the convertible top if at all
RA Repair instructions for convertible top hydraulic system
BMW AG - TIS
15.01.2013 20:47
Issue status (12/2007) Valid only until next DVD is issued
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