A
C
C
BC D B D
B
192
6.8 Installing Drive Unit (BDU310/350)
Fastening the drive
unit with screws
1. Insert the mounting plate (A) in
such a way that the cable are
led from below and not pinched
or trapped.
2. Lightly screw in the three nuts
(B) along with their wash
ers
(C), but do not tighten.
3. Screw down the mounting plate
on the drive unit with two
screws (D) (M6 x 16).
4. Tighten the three nuts (B).
5. Connect the cable connections.
Cable routing
X Fix excessive cable lengths
using cable ties. Use the holes
in the adapter plate for this
purpose.
X Torx wrench T30
X Socket wrench insert size 13
X Torque wrench
X Drive unit on the frame inter-
face (size 13): 28-32 Nm
X Mounting plate on the drive unit
(Torx T30, self-tapping screws):
– Initial assembly (self-tapping):
13-15 Nm
– Subsequent assemblies
(thread already exists):
9-11 Nm
Work steps Tool
Tightening
torques
Information about the mounting plate screw connection
X New drive units do not include threads in the
mounting for the mounting plate screws when deliv-
ered from the factory. The threads must first be
produced by using self-tapping screws.
Always make sure that the screws are correctly
seated and that the specified tightening torque is
used.
X If the threads are damaged: Repair is possible using
a thread insert. For instructions, see e.g.:
&
boellhoff.de → Products and Services → Special
fasteners → Thread inserts for metals HELICOIL® →
Downloads → HELICOIL® Plus – Repairing of dam-
aged threads
6.8 Installing Drive Unit
(BDU310/350)
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