Section I. CONTROLS AND INSTRUMENTATION
See figures 2-1 and 2-2 for the locations of the indi-
2-1. LOCATION AND FUNCTION. All controls and
vidual controls and instruments. Refer to tables 2-1
instrumentation used in operation of the test stand
and 2-2 for the functions of these items.
are mounted conveniently on the two control panels.
Section II. OPERATING PROCEDURES
f. Connect the 1/2 inch outlet hose assembly and
the 3/4 inch suction hose assembly to the 1/2"
Keep test stand at least 10 feet away from
OUTLET anti SUCTION RETURN ports at the
aircraft engines and fuel tank areas during
rear end of the test stand. Connect the other
operation. To prevent carbon monoxide
ends of the hose assemblies to the system you
poisoning, never operate the test stand in
are going to test.
a closed building unless the exhaust is
2-3. ENGINE START-UP. To start the engine, do
2-2. PRELIMINARY SETUP. To set up the test
stand for operation, tow it to the operating area and
do the following:
Operation of this equipment presents a
noise hazard to personnel in the area.
a . Set the parking brake at the front end of the
The noise level exceeds the allowable
b. Open all engine compartment and control panel
limits for unprotected personnel; wear
doors and fasten them in the open position.
ear muffs or ear plugs which were fitted
c. Set the hydraulic valves (figure 2-1) as follows:
by a trained professional.
(1) Turn PRESSURE COMPENSATOR (16)
counterclockwise to open.
(2) Turn COMPENSATOR SHUTOFF VALVE
(17) counterclockwise to open.
Make sure that all valves have been set accord-
(3) Turn FLOW CONTROL VALVE (12) clock-
ing to paragraph 2-2c.
wise to close.
Make sure that HIGH PRESS BYPASS VALVE
(4) Turn HIGH PRESS RELIEF VALVE (19)
control (19, figure 2-1) is set to OPEN. This
counterclockwise to open.
setting allows the engine to be started with no
(5) Turn FLUID PRESS GAGE SHUTOFF
valve (22) counterclockwise to open.
Pull out positive action ground switch (3, fig-
(6) Set HIGH PRESS BYPASS VALVE (19) to
ure 2-3) at the bottom of the engine magneto
end cover. Leave the ground switch in the full
(7) Set SUCTION PRESSURE FILTER-OUT
control (21) to FILTER-OUT.
Pull CHOKE control (1, figure 2-2) out about
(8) Turn VOLUME control (14) counterclock-
wise to zero flow.
Pull THROTTLE (3, figure 2-2) and twist it to
(9) Set RESERVOIR valve (15) to IN.
lock at the one-quarter open position.
d. Make sure that the hydraulic system has been
Set IGNITION SWITCH (2, figure 2-2) to ON.
prepared for use as directed in paragraph
Set STARTER switch (5, figure 2-2) to the up
position. Hold the switch in this position until
e. Make sure that there is enough gasoline in the
the engine starts, then release the switch.
fuel tank for the complete test that you intend to
Open the choke slowly by pushing in CHOKE
perform. A full tank (about 20 gallons) will pro-
control (1, figure 2-2) until the engine is run-
vide at least 4 hours of continuous operation.
ning normally with the CHOKE control pushed
all the way in.
Using THROTTLE (3, figure 2-2), adjust the
engine speed to between 1000 and 1400 RPM.
The engine RPM can be read on TACHOMETER
Keep the engine compartment top and side
HOUR METER (1, figure 2-l). Run the engine
doors fastened in the open position whenever
you operate the engine.