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Rolls-Royce Silver Shadow II - Page 25

Rolls-Royce Silver Shadow II
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12 10
76
2
of
8
SY/C8
DESCRIPTION:
To
adjust
the
expansion
valve
it
is
necessary
to
discharge
the
refrigeration
system
and
detach
the
inlet
and
outlet
pipes
of
the
valve.
This
allows
the
valve
body
to
be
inverted
for
adjustment
to
be
carried
out.
PROCEDURE:
Expansion
valve
-
to
adjust
1.
Discharge
the
automatic
air
conditioning
system
(see
TSD
2939
-
Workshop
Manual
- Camargue -
Chapter
C -
Section
CS).
2.
Detach
the
outlet
and
inlet
pipes
of
the
expansion
valve
and
carefully
invert
the
valve.
This
allows
access
for
the
adjustment
to
be
carried
out.
Ensure
absolute
cleanliness
during
these
operations.
3.
Obtain
or
manufacture
a
9/32
AF
Allen
key
as
shown
in
Figure
2
and
mark
with
two
scribe
marks,
the
first
scribe
mark
representing
one
revolution
of
the
key,
the
second
representing
6
and
1/8
revolutions
of
the
key
{1/8
turn
represents
45
travel).
4.
Insert
the
Allen
key
into
the
valve
outlet
port
as
shown
in
Figure
2
so
that
the
key
engages
into
the
hexagonal
adjuster.
Scribe
a
mark
on
to
the
valve
outlet
port
outer
periphery
to
correspond
with
the
scribed
line,
Item
5
of
Figure
2.
Rotate
the
Allen
turn
and
then
an
item
4
of
figure
outlet
port.
fey
in
a
clockwise
direction
one
full
/8
of
a
turn
so
that
the
scribed
line
2
corresponds
with
the
mark
on
the
valve
This
operation
means
the
hexagonal
adjuster
has
been
rotated
1
and
1
/8
turns
clockwise.
Should
the
adjuster
be
rotated
more
than
land
1
;a
turns
the
valve
must
be
renewed~
on
no
account
should
the
valve
adjuster
be
turned
anti-clockwise.
5.
Assemble
the
valve
to
its
original
position,
renewing
the
'O'
rings
as
necessary.
Paint
a
white
identification
spot
where
indicated
in
Figure
l.

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