vision microsystems VM1000 - 1.7 AIR TEMP SYSTEM INSTALLATION; Air Temperature Transducer Installation and Wiring

SECTION
I INSTALLATION I9
I.7 AIR TEMP
SYSTEM INSTALLATION
1.7.1
ArR TEMP INDICATOR
INST.
(P/N
4010010)
\r'
The indicator is
simply installed
by following
instructions
in section
titled DPU,
INDICATOR and MODE
SWITCH installation.
1.7.2
O.A.T. TRANSDUCER
INST.
(P/N
3010020)
Mount
the
transducer
in an area of
outside
air
that is undisturbed
and
not
affected by
engine or
cabin heat. The
transducer thread
is
114-28
UNF-2A. Do
not over
tighten the
transducer
or damage will result.
1.7.3
C.A.T.
TRANSDUCER
INST.
(P/N
30100201
The
transducer
is mounted
in the
forward side
of the carburetor
via
an
access hole
that is
cast into the
carb body
(see
SECTION
5
ILLUSTRATIONS).
lf this
hole is filled
with
a lead
ball
plug,
it
will
have
to
be removed,
counter-bored
and
tapped. The transducer
thread
size
is 114-28
UNF-2A.
Consult
a licensed A&P mechanic
for
this
operation.
lf
it
has a
lhreaded
plug,
remove
it. lnstall an
internal
lock
washer
over the
lransducer
(not
included)
and insert
the
transducer.
lnsure that
it turns
completely
into the
threads and
\---l
'bottoms
out'against
the flat surface
on
the carburetor.
Remove
again
and apply
a thread
qealant
with light
locking
properties
on only
the
last three
threads
nearest
the hex head
of the
probe
and re-
install.
Do not
over tighten
the
transducer
or damage will
result. We
recommend
finger
tightening
the transducer,
then
carefully tightening
a max of 1/6 to 1/4
additionalturn.
***CAUTION***
Always
discharge
yourself
to
ground
before
wiring.
DPU
TERM.
CABLE
COLOR
XDUCER
WIRE
XDUCER
FUNCTION
XDUCER
PART
NO.
J4-3 RED
RED
O.A.T
301 0020
J4-4
BLK
BLK
ll
J4-5 RED
RED
c.A.T.
301
0020
J4-6
BLK
BLK
lt
NOTE:
Shield
wire
not
connected
5010002
REv
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