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TM-55-4920-405-13-P Test Stand Hydraulic System Gasoline Engine Driven Type D-5C Manual
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Figure 1-1. Hydraulic Test Stand, Type D-5C
TM 55-4920-405-13&P
CHAPTER 1
INTRODUCTION
Section I. GENERAL INFORMATION
d. The locations of control panel nameplates
1-1. GENERAL. This technical manual provides
operating aviation unit and aviation intermediate
differ slightly.
maintenance instructions for Gasoline Engine Driven
e. The part number of the control panel is differ-
Hydraulic Test Stand, Type D-5C. The test stand is
ent because mounting holes for the nameplates
manufactured by the United Manufacturing
have been relocated.
Division, UMC Electronics Co., North
Haven, Connecticut. The manufacturer's designa-
1-3. SCOPE. You can use the test stand to check
the performance of aircraft hydraulic system com-
tion is Test Stand, Hydraulic System, Gasoline
Engine Driven, Type D-5C, part number 7469 or
ponents. The test stand is mobile, and contains its
own reservoir, Volume and pressure of hydraulic
7469-1.
fluid can be regulated without using aircraft power.
1-2. MODEL DIFFERENCES. Unless otherwise
1-4. MAINTENANCE FORMS AND RECORDS.
specified, all instructions in this technical manual
Maintenance forms, records, and reports which are to
apply to both test stand, part number 7469, and test
be used by maintenance personnel at all maintenance
stand, part number 7469-1. Test stand, part num-
levels are listed in and prescribed by DA PAM
ber 7469-1 differs from test stand, part number
738-751.
7469, in the following ways:
a. A hose connector adapter assembly is supplied
1-5. REPORTING ERRORS AND RECOMMEN-
with part number 7469-1 only. This adapter
DING IMPROVEMENTS. Refer to Table of Con-
assembly permits you to connect the 1/2" hose
tents.
assembly to the 3/4" hose assembly to form a
closed loop system for self-checking the test
stand.
b. The identification plate is different because of
the difference in part numbers.
c. The capacity nameplates differ in wording.
Section II. DESCRIPTION AND LEADING PARTICULARS
the internal assemblies from the weather. You can
1-6. DESCRIPTION. The test stand (figure l-l) is
get to internal assemblies and operating controls,
a self-contained, mobile, hydraulic test stand. It
and provide needed ventilation during operation by
consists of a steel, weather-resistant cabinet that is
opening doors on the cabinet assembly.
mounted on a trailer assembly. The trailer has
individually suspended wheels, hand operated park-
1-7. FUNCTION OF PARTS AND ASSEMBLIES.
ing brakes, and a hinged tow bar. You can tow the
See figures 1-3 through 1-7 for the locations of
test stand from one operating location to another
major parts and assemblies of the test stand. Refer
with a truck or other suitable vehicle. TWO main
to tables 1-1 through 1-5 for the functions of these
assemblies and assorted hydraulic hose assemblies
parts and assemblies.
make up the test stand. Unit subassembly (2, fig-
ure 1-2) contains all parts and assemblies needed to
1-8. LEADING PARTICULARS. Refer to table 1-6
provide hydraulic fluid at regulated pressure and
for a listing of the main capabilities and limitations
flow, and monitoring devices. Cabinet assembly (1,
of the test stand.
figure 1-2) covers the unit subassembly. It protects
1-1
Change 3

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