Sirona Dental Systems GmbH
5 Installing the Wide Backrest
59 58 470 D 3370
D 3370.031.01.10.02
9
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ATTENTION
The order of installation must be complied with exactly to
guarantee the parallelism of the guide rods on the slide of
the headrest.
1.
Remove the six screws and four washers from the strut.
Remove screws
A
on the side of the strut.
2.
Pull off backrest cover.
3.
Remove two screws from the backrest (for use later at
position
C
).
4.
Pull out the head support to its stop position.
5.
Place the metal bracket, tilted slightly backward, onto
point
B
and tilt the backrest forward.
6.
Retighten the backrest with the six screws removed un-
der
1.
above.
NOTE
i
With the electrical headrest the padding flap
P
is fastened
with the two middle screws.
Never use washers.
7.
Screw in screws
A (see "
ATTENTION
")
and
C
.
ATTENTION
When screwing in screw
A
, make sure that the threaded
spindle is not bent. Use open-end spanner SW10.
ATTENTION
Tighten
all screws. Screws that have not been tightened
can result in malfunctions when the backrest is driven in and
out.
5 Installing the Wide Backrest
B
5.
4.
1.
6.
3.
C
C
A
A
2.
7.
P
i
