TM 55-4920-384-13&P
the engine compartment. These doors are provided
d. Hydraulic Pump. The hydraulic pump incor-
with a fastening device to hold doors in a fully
porates the following features; a fluid volume con-
opened position.
trol providing regulation of pump delivery from 0 to
10 gpm (gallons per minute) at operating pressures
i Engine Access Side Doors. The engine access
ranging from 400 to 5000 psi (pounds per square
side doors permit entry to the engine compartment
inch) output, and adjustable compensating control
and supply ventilation to the engine.
(16, fig. 1-9) mounted on the control panel, which at
the predetermined pressure, reduces pump delivery
to the minimum requirements to maintain pressure
j. Fuel Tank Access Door. The fuel tank access
door allows access to the fuel tank (15) and fuel
in the system. The pump is protected from over-
filler spout. Mounted on the inside of the access door
heating by a preset thermoswitch mounted in the
is a holder for storing the test stand instruction
low pressure filter which stops the engine when the
manual and related literature.
fluid to the pump exceeds 160 degrees F.
k. Housing Assembly. The housing assembly is
NOTE
removed by unsnapping ten fasteners and lifting
For the purpose of explanation the
from frame.
front of the unit is considered the tow.
1-5. Identification Plate. The manufacturer's
bar end and the right and left are ref-
erenced to an operator standing at the
identification plate is located on the front of
rear of the unit and facing towards
the housing assembly and specifies type, speci-
the tow bar end.
fication, contract number, National stock
number, manufacturers part number, serial
e. Service Hoses. The rear compartment of the
number, weight, towing speed, and rating of
test stand contains the service hoses and related
hose accessories. This compartment is accessible
1-6. Engine Data Plate. The engine data plate.
f. Control Panel. A control panel access door (1,
mounted on the engine air shroud inside the
fig. 1-2) gives access to the
control panel which
engine compartment, specifies the make, mod-
houses the fluid high pressure gage, low pressure
el, serial number and operating instructions of
gage, fluid temperature gage, ammeter, engine fuel
gage, engine oil gage, engine tachometer and hour-
meter, high pressure filter warning light, low pres-
sure filter warning light, fuel tank level indicator
stand is a self contained mobile testing unit,
and hydraulic reservoir (fluid) level indicator. This
capable of delivering a continous flow of hy-
panel is shock mounted on to the major control
draulic fluid at the rate of 0 to 10 gpm (gallons
indicator, reservoir selector valve, low pressure fil-
per minute) at pressures from 400 to 5000 psi.
ter selector valve, fluid bypass valve, high pressure
The test stand is also capable of maintaining a
relief valve, flow control valve, gage shutoff valve
rated output of 10 gpm at 3000 psi or 5 gpm at
and pressure compensator control.
5000 psi at the same time that the inlet fluid
pressure to the stand is varied throughout the
g. Major Start Panel. Attached to the major
control panel, the engine start panel houses the
range of 16 inches HG absolute to 110 psig
choke control, starter `switch, engine throttle con-
pressure. The test stand will operate effi-
trol, ignition switch and the fuse and fuse holder
ciently within an ambient temperature range
from -20 degrees F to +125 degrees F, Table 1-
1 lists outstanding facts concerning test stand.
h. Engine Overhead Access Doors. The engine
overhead access doors allow entry and ventilation to
1-9