Cessna SKYMASTER 337 Series Guide

REPRINT
AVIONIC
SERVICE/PARTS
MANUAL
1979
THRU
1980
MODEL
337
SERIES
D4592-2-13
THIS
REPRINT
CONSISTS
OF
THE
BASIC
MANUAL,
DATED
15
SEPTEMBER
1979,
AND INCORPORATES
REVISION
1,
DATED
15 JANUARY
1980,
AND
REVISION
2, DATED
15
JANUARY
1982.

Cessna
Avionic
Installations
Service/Parts
Manual
1979
thru
1980
MODEL
337
SERIES
Member of GAMA
FAA APPROVAL HAS BEEN OBTAINED ON TECHNICAL
DATA IN THIS PUBLICATION THAT AFFECTS
AIRPLANE TYPE DESIGN.
THIS REPRINT
INCORPORATES REVISION
1, DATED 15 JANUARY 1980, AND
REVISION
2,
DATED 15 JANUARY
1982. THIS MANUAL
SUPERSEDES
AND REPLACES
D4587-13,
DATED 15 OCTOBER 1978.
COPYRIGHT c 1983
CESSNA AIRCRAFT COMPANY
WICHITA,
KANSAS,
USA
15 SEPTEMBER 1979
D4592-2-13-RPC-50-10/83

LIST OF EFFECTIVE PAGES NOTE The portion of the text affected by the revision Indicated by a vertical 1ine in
The outer margins of the page Revisions to illustration are indicated by miniature
pointing hands.
Dates of issue for original and revised pages are:
Original. . . 0 ... 15 September 1979
Revision. . . 1 . . .15 January 1980
Revision. . . 2 ... 15 January 1982
TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 422 CONSISTING OF THE FOLLOWING:
Page Revision
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Upon receipt of the second and subsequent revisions to this book, personnel
responsible for maintaining
this publication in current
status should ascertain
that all previous revisions have been received and incorporated.
* The asterisk indicates
pages revised, added, or deleted
by the current revision.
A Revision 2

AVIONICS
SERVICE/PARTS
MANUAL
FOREWORD
This manual provides
the radio service technician with service
information, illustrated parts breakdown
and wiring
diagrams pertaining to avionics equipment
installed in Cessna 337 series aircraft.
The catalog
is seperated
into the
following
eight sections:
Section
I -
Cessna-Crafted
Avionics
Equipment
Section II
- Vendor-Crafted
Avionics Equipment
Section
III - Antenna
Systems
Section
IV -
Audio Systems
Section V -
Miscellaneous Avionics
Equipment
Section VI - Autopilot Rigging Procedures
Section VII - Avionics Wiring Diagrams
Section VIII - Numerical Index
The table
of contents
will enable
the readers
to find
the information
necessary
to check
wiring
installa-
tions and
parts
required
for
any particular
radio.
i

AVIONICS
SERVICE/PARTS
MANUAL
IMPORTANT INFORMATION
CONCERNING
KEEPING
CESSNA
PUBLICATIONS
CURRENT
This Publication
is
kept current
in three
ways:
1.
REVISIONS/CHANGES.
Revisions/changes
are
issued
for this publication
as required
and
include only pages
that require updating.
2. REISSUE.
A
reissue is
issued as
required,
and is a complete
manual
incorporating
all the
latest information
and
outstanding
revisions/changes.
It super-
sedes
and
replaces
previous
issue(s).
3.
PUBLICATION NOTICES.
Publication
notices are
issued,
as required,
to announce
when
publica-
tions
(revisions/changes,
new and/or
reissues)
become
available.
This
notice
provides
a description
of the
publication,
part number,
and
pricing
information.
REVISIONS/CHANGES
and REISSUES
can be
purchased
from your
Cessna
Dealer or
directly from
the Cessna
Supply
Division,
SPA Dept.
703. Cessna
Aircraft
Company,
5800 East Pawnee,
Wichita,
Kansas 67201.
PUBLICATION
NOTICES
can be obtained
by owners
and operators
by purchas-
ing a Service
Information
Letter
subscription.
For
more information
concern-
ing this
program, contact your
Cessna Dealer
or request
a Service Information
Letter
subscription
form
directly from
the Customer
Services
Department,
Cessna Aircraft
Company,
5800
East
Pawnee, Wichita,
Kansas
67201.
A Customer
Care Supplies
Catalog
is available
from
your Cessna
Dealer
or
directly
from the
Cessna
Supply Division,
SPA Dept.
703,
Cessna Aircraft
Company.
5800
East Pawnee, Wichita,
Kansas
67201. This
catalog lists
all
publications
and
Customer
Care Supplies
available
from Cessna
for
prior year
models as
well as new
products.

AVIONICS
SERVICE/PARTS
MANUAL
CROSS REFERENCE
LISTING OF POPULAR NAME
VS. MODEL NUMBERS AND SERIALS
NOTE
All aircraft,
regardless of manufacturer, are certificated
under model number designations.
However,
popular names are often used for marketing
purposes. To provide a consistent
method
of referring to the various aircraft,
model numbers will be used in this publication
unless names
are required to differentiate
between versions of the same basic model.
The following table pro-
vides a cross-reference
listing of popular
vs. model numbers.
POPULAR NAME
SKYMASTER or SKYMASTER II
TURBO SKYMASTER or
TURBO
SKYMASTER
II
PRESSURIZED SKYMASTER or
PRESSURIZED SKYMASTER II
MODEL
YEAR
1979
1980
1979
1980
1979
1980
MODEL
337H
337H
T337H
T337H
P337H
P337H
BEGINNING
33701875
33701922
33701875
33701922
P3370319
P3370342
SERIALS
ENDING
33701921
33701921
P3370341
iii

AVIONICS SERVICE/PARTS MANUAL
STANDARD PARTS.
Many parts having standard usage have been incorpo-
rated into the Cessna
Standard System. Parts
in this
group are designated with the part number prefix "S."
For standard
hardware items
such as Tinnerman
nuts,
clamps, etc., "AN" and
"NAS" numbers
have
been used.
USABLE ON CODES. .. Serial listings in this catalog
are noted by a letter code located in the usable on
code column which is the extreme right hand column
of the parts list page. Usable on codes are applic-
able only to the
figure on which they
appear. The
code letters
and the serials
to which they apply are
listed at the end of the figure.
If no usable on code appears opposite a first column
listing of the figure,
the usage is applicable
to all
models and serials covered by this catalog. If no
usable
on code appears opposite
any indented list-
ing, the usage is applicable to all models and serials
covered by the figure on which it appears.
NON-INTERCHANGEABLE PARTS.... When parts
are not interchangeable with earlier models, all
parts applicable to the particular usage are listed.
The letter code for the individual part usage is
listed in the usable on column opposite each part.
Care should
be exercised
in determining proper
serial
when ordering to ensure
receipt of correct
part.
INTERCHANGEABLE PARTS.... When a later design
part is completely interchangeable with the part it re-
places, both parts will be serialized and the notation
"when exhausted use " will be entered following
the listing of the earlier design part. This means
that the earlier design part should be used on air-
planes to which they apply until the supply of these
parts is exhausted---after which time the later de-
sign part must be used. This is done to simplify
stocking of parts by our distributors and dealers.
The earlier part is as
good, physically and
function-
ally, as the later design part---the difference being
the later design
part can be used on
more than one
block of airplane
serials.
SYMBOLS & PART NUMBER TERMS.
NP - The symbol "NP" appearing in the units per
assembly column denotes that
the item
it appears
opposite is not procurable.
AR - The symbol "AR" appearing in the units per
assembly column denotes "As Required" and is used
to indicate bulk
quantity when an indefinite
amount
is used.
ALT - The
symbol "ALT" following
the nomenclature
of an item is used to denote an alternate part.
LH
& RH - The symbols
either LH or RH are
used
following
the part nomenclature
to denote either left
hand or
right hand
parts.-
Other key letter symbols spaced apart from and fol-
lowing the part nomenclature
are for cataloging
and
manufacturing purposes only and are not to be con-
sidered by the customer.
A blank entry in the part number column appears be-
fore an unprocurable
part or installation
which is
also denoted in the "Units Per Assembly" column
by the use of the symbol "NP."
GROUP ASSEMBLY PARTS LIST ARRANGE
MENT.
This section lists all replaceable items in the air-
plane and these items are detailed on illustrations
throughout the
section. The index numbers
on the
illustration are keyed
to each accompanying
parts
list. The purpose
of the index
numbers is to pro-
vide complete and
positive identification
of the arti-
cle, but
should not be-used
for procurement-pur-
poses.
a. The figure and index number column of the
parts list shows the figure number once at
the beginning of the list. The figure number
is followed by a dash and the indexed number.
The remaining index numbers are preceded
by dash only.
b. The part number column identifies the item
by part number.
c. In the description column, relationship of
items covered is shown by the degree of in-
dention
of each item,
for example: The
radio installation
(Figure
1-1) is listed in
column (1) of the description column. The
receiver is the next lower assembly and is
therefore
listed in column
(2).
d. If two or more assemblies contain a major-
ity of identical parts or the assemblies are
left or right hand, the assemblies are listed
together and
the next lower assemblies
or
detail parts are listed as common for both
assemblies, with the differing parts coded
for usage on the
correct major assembly.
e. Attaching parts are listed immediately be-
neath the item to be attached and preceding
any detail
parts of the item.
They are listed
in the same column
as the item
they attach
and are preceded
by the caption "Attaching
Parts." The end of the attaching parts list-
ing is followed by a separating symbol
--- *---
f. The quantity listed in the "Units Per Assem-
bly" column for attaching parts denotes the
total quantity necessary to attach only one
part. Total quantity necessary to attach
more than one part is obtained by multiply-
ing the attaching
parts quantity
by the number
of parts attached.
iv

AVIONICS SERVICE/PARTS MANUAL
g.
Component parts
of the complete airplane
which are not included in
any assembly,
but
which are used
in conjunction with,
or attach
to certain assemblies,
are listed either
pre-
ceding
the first detail or
following the last
detail of the assembly or installation, and
in the same column as the major assembly
or installation.
h. The quantities
listed in the "Units
Per As-
sembly" column are the quantity used per
figure.
ACCESSORY KITS.
This catalog describes the factory installation of the
equivalent field installation AK Kit and the factory
installation is considered standard and illustrated
as such.
For information regarding peculiarities of field in-
stallation kits consult the applicable AK Kit instal-
lation called out in the Accessory Kit Catalog.
BULK ITEMS.
Certain items such as coaxial cable, antenna wire,
clamps, etc., are noted in the catalog listings as
bulk items. When an
item is listed as a
bulk item,
it will be supplied to the dealer in the most conven-
ient bulk length or quantity. Reference to the cut
length or quantity per installation provides for the
most satisfactory disbursement to the customer.
HOW TO ORDER.
USE YOUR CATALOG
TO ORDER PARTS.
Use Parts
and Accessories
Order Form
Number P-101A, P-102,
or P-103, whichever applies and which will be sup-
plied by Cessna on
request. Give complete
infor-
mation on addresses
and make sure the
part number
and part name are as shown in the catalog. Be sure
to specify quantities. Specify how the order is to be
shipped, otherwise it will be sent out in the manner
that seems best to the shipper.
SERIAL, COLOR, & CORROSION PROOFING.
Be sure to indicate model and serial number of the
airplane. Serial number is very important to prop-
erly identify parts used on each airplane, when color
is involved. Be sure to specify what color. If cor-
rosion proofing is desired add the letters "CP" fol-
lowing the part number.
DISTRIBUTION ORDERS.
Distribution will send all orders to the factory with
instructions as to the shipping destination. The
factory prefers not to make C.O.D. shipments for
the distributor and all billing will be made to the
distributor in the case of direct shipments.
DEALER ORDERS.
Dealers
will place all of
their parts order require-
ments with their distributor. The factory will not
honor orders received directly from a dealer. It
will be necessary for us to forward it to the dis-
tributor for his action. Therefore, dealer orders
sent direct to the distributor will result in much
faster delivery on any parts that are required.
RETAIL ORDERS.
Retail orders will not be honored by the factory.
They are to be placed with the dealer or distributor
in the owner's territory and when received directly
by the factory
will be forwarded
to the distributor
from
whose territory it was
received. Considerable
saving
in time will result
to the owner if his orders
are placed with his dealer or distributor.
NOTE
Cessna
Aircraft Company
reserves the right
to
cancel, add or change
the parts and assem-
blies described in
this catalog without
notice.
v

AVIONICS SERVICE/PARTS MANUAL
TABLE OF
CONTENTS
SECTION 1
-
CESSNA-CRAFTED
AVIONICS
EQUIPME NT
Figure
Equipment
Page
1-1 Cessna 300
ADF (Type R-546E)
Radio Installations ................. 1-2
1-2
Cessna 300
Nav/Com (Type
RT-385A) Radio
Installations
....
..
1-5
1-3 Cessna
300 Transponder
(Type RT-359A) Installations
- 1979 337 Model
Only .. .
1-8
1-4 Cessna 400
ADF (Type R-446A)
Radio Installations ...................
1-10
1-5 Cessna 400
Nav/Com (Type RT-485A) Radio
Installations with
300 Series Indicators
............ ..
1-13
1-6 Cessna 400 Nav/Com
(Type RT-485A) Radio Installations
with
400 Series Indicators
............
.. 1-16
1-7
Cessna 400 Area
Nav (Type RN-478A)
Installations .. ..
1-19
1-8
Cessna
400 Glide Slope
(Type R-443B)
Installations
.........
1-21
1-9 Cessna 400
Marker Beacon (Type
R-402A) Installations
thru 1979 Models Only
.... 1-23
1-9A Cessna
400 Marker Beacon (Type R-402A) Installations
- 1980 & On Models Only ...
1-26
1-10
Cessna 400 DME
(Type R-476A) Installations
.................
1-31
1-11
Cessna 400 Transponder
(Type R-459A) Installations
................
1-33
1-12
Cessna
400 Encoding
Altimeter (Type
EA-401A) Installations
............
1-35
1-13
Cessna 403
Radio Magnetic
Indicator (RMI)
(Type IN-404A)
Installations
.......
1-37
1-14
Cessna Unslaved
Horizontal Situation
Indicator (Type IG-832C)
Installations ......
1-39
1-15 Cessna Slaved
Horizontal Situation
Indicator (Type IG-832A)
Installations .......
1-41
1-16
Cessna
400 Navomatic
(Type AF-420A)
Autopilot Installations
337 & T337 Models Only ........................
. 1-43
1-17
Cessna 400 Navomatic
(Type
AF-420A) Autopilot
Installations
1979
P337 Models
Only ...........
.. 1-49
1-18
Cessna
400A Navomatic
(Type AF-530A)
Autopilot Installations
1979 &
On 337 Series
Models Only
.........
.. 1-55
1-19 Cessna 400A Integrated
Flight Control System (Type AF-530
BFD) Installations
1979 337 Series
Models Only ...........
..
1-70
1-20 Cessna Altitude Encoder
(Type EA-801A) with Cessna 800
Altitude Alerter
and Pre-Select
(Type AA-801A) Installations
................
. 1-84
SECTION
II - VENDOR
CRAFTED AVIONICS EQUIPMENT
Figure
Equipment
Page
2-1 Altitude Encoder
(Blind) Installations ......................
2-2
2-2
Bendix Weather
Radar (Type
RDR-160)
Installations
................
2-4
2-2A RCA
Weatherscout II Radar
Installations .....................
2-9
2-3 Emergency
Locator
Transmitter
Installations
...................
2-14
2-4 Foster Area
Navigation (Type 511) Installations ..................
2-16
2-5
Pantronics
HF Transceiver
(Type PT10-A)
Radio Installations
............
2-18
2-6
Sunair Single Side-Band
(Type ASB-125)
Radio Installations
............
2-20
SECTION III - ANTENNA SYSTEMS
Figure
Equipment
Page
3-1
VHF Antenna Installations ............................
3-2
3-2 Omni
Antenna Installations .........................
3-4
3-3 UHF
Glide Slope Antenna
Installations ................ ....
3-5
3-4 Marker Beacon Antenna Installations
....................
. 3-7
3-5
Medium and High
Frequency Fixed Wire
Antenna Installations
............
3-9
3-6 ADF Sense Antenna
Installations .........................
3-12
3-7
Anti-Precipitation
ADF (Sense) Antenna Installations
................
3-16
3-8 Cessna
300 & 400 Transponder
Antenna Installations
................
3-18
3-9 Cessna 400 DME Antenna Installations
......................
3-20
vi

AVIONICS
SERVICE/PARTS
MANUAL
TABLE
OF CONTENTS
(cont)
SECTION IV - AUDIO SYSTEMS
Figure
Equipment
Page
4-1 Audio Control Panel & Selector
Switch Installations - All 1979 Models ........
4-2
4-2 1979 Audio Control Box Test Extender Cable Assembly Used for Audio
Sidetone Adjustment
............
..
4-8
4-3 Audio Control Panel &
Selector Switch Installations - All
1980 & On Models
With One or Two Transmitters Only ....................... 4-9
4-4
1980 & On
Potentiometer Adjustment
Procedures
For Audio Control
Panels
Incorporating One or Two Transmitters ..................... 4-17
4-5 Audio Control Panel & Selector Switch Installations - All 1980 & On Models
With Three Transmitters on Dual ADF's Only .................. 4-20
4-5A 1980 & On Potentiometer
Adjustment Procedures For
Audio Control Panels
Incorporating Three Transmitters or Dual ADF's ................ 4-26
4-6 Speaker Installations
..............................
4-27
4-7
Hand-Held Microphone
Installations
........................
4-28
4-8 Headset Installations .......................... . 4-29
4-9 Headset- Microphone
Installations .........................
4-31
4-10 Combination Microphone & Padded
Headset Installations .... ..
4-33
SECTION V - MISCELLANEOUS AVIONICS EQUIPMENT
Figure
Equipment
Page
5-1 Radio Cooling
Installations ............................
5-2
5-2 Radio Noise Filter Installations .......... .. 5-5
5-3 Photocell
Light Dimning Installations - 1979 Models
Only ........
5-9
5-4 Avionics Circuit
Breaker Panel Installations ....................
5-11
5-5 Stationary Instrument
Panel & Removable LH &
RH Instrument Panels
and Covers - 337 Models Only .. ............ .. ..... 5-13
5-6 Stationary Instrument Panels & Removable LH & RH Instrument Panels
and Covers - T337 Models Only ........................ 5-18
5-7 Stationary
Instrument
Panels & Removable
LH & RH Instrument
Panels
and Covers - P337 Models Only ........................ 5-23
5-8
Available Accessory Kit List
- See Accessory Kits Catalog
SECTION VI - AUTOPILOT RIGGING PROCEDURES
Figure
Equipment
Page
6-1
Rigging Procedures for Cessna 400 Autopilot
(Type AF-420A) ............
6-2
6-2 Rigging Procedures for Cessna 400A & 400A IFCS Autopilots ............ 6-7
SECTION VII - AVIONICS WIRING DIAGRAMS Page
Table of Contents ..................................... 7-1
SECTION VIII - NUMERICAL INDEX Page
Title Page ......................................
... 8-1
vii/(viii Blank)