Remove the cap from the filler neck of the
Charge the battery at 30 amperes for 30
test stand reservoir.
minutes only if it is to be installed during
Connect the 1/2 inch outlet hose assembly
to the 1/2" OUTLET port at the front end
(7) Install the battery in the test stand, noting
of the test stand. Remove the coupling
from the free end of the hose assembly.
(a) Inspect the battery cables, clamps,
Insert the free end of the hose assembly
and hold- down. Clean, if dirty: re-
in the reservoir filler neck. Take care
place, if worn or corroded. New bat-
not to damage the strainer screen.
tery cables insure efficient battery
Start up the engine of the test stand, using
the procedures of paragraph 2-3.
(b) Install the battery in the test stand.
Turn FLOW CONTROL VALVE (12, fig-
Make sure that terminal posts and
battery connections are clean and
ure 2-1) fully counterclockwise to open.
tight, and that connections are not
Set VOLUME control (14) to the position
that produces a 2 GPM indication on FLOW
reversed, Reversed battery connec-
INDICATOR GPM (11).
tions will damage the charging system.
Set HIGH PRESS BYPASS VALVE control
Check with a DC voltmeter.
(8) After the battery has cooled, or within one
(19) to CLOSED.
Turn COMPENSATOR SHUTOFF VALVE
month of installation, check the battery
(17) clockwise to close until some pres-
liquid level. If necessary, add clean,
sure is shown on FLUID PRESSURE GAGE
cold tap water through the flip cap vent
(5). Check the fluid flow until there is no
tubes to bring the liquid to the right level.
trace of air in the fluid.
Shut down the test stand. Set HIGH PRESS
BYPASS VALVE (19) to OPEN. Turn
Before filling the fuel tank of the test stand,
VOLUME control (14) counterclockwise to
the fully closed setting. Turn FLOW CON-
always ground the fuel tank and the fuel
TROL VALVE (12) clockwise to the fully
container. This prevents sparking. Do not
fill the fuel tank near flames or hot glowing
Remove the 1/2 inch outlet hose assembly
from the reservoir. Install the cap on the
g. Fuel System. Fill the fuel tank of the test
filler neck of the reservoir. Install the
coupling removed from the hose assembly.
stand with fuel, Specification MIL-G-3056 or MIL-
Disconnect the hose assembly from the
F-5572. Make sure that fuel shutoff cock (figure
3-2) is open. Check the fuel strainer for leaks.
1/2" OUTLET port of the test stand, and
install the dust plugs on the cable assembly.
h. Hydraulic System. Prepare the hydraulic
Check the test stand for hydraulic leaks.
system as follows:
3-2. PREPARATION FOR STORAGE.
(1) Remove the drain plug from the low pres-
sure filter and drain any corrosion pre-
a. Fuel System. Drain the gasoline from the
ventive compound from the hydraulic sys-
engine fuel system as follows:
tem. Then, install the drain plug.
(2) Set all test stand valves according to
(3) Fill the hydraulic reservoir of the test
To prevent sparks, always ground the fuel
stand with about 20 gallons of hydraulic
container and the test stand fuel tank be-
fore draining gasoline. Do not drain
(4) Remove the 1/2 inch cap from the 1/2
gasoline near flames or glowing hot objects.
inch tee going to the hydraulic pump case.
This tee is behind the left rear access
(1) Make sure that the engine of the test stand
door of the test stand near the reservoir
drain valve. Fill the hydraulic pump case
(2) Make sure that engine shutoff cock (figure
with hydraulic fluid. Install the 1/2 inch
3-2) is open.
cap on the tee.
(3) Drain the gasoline into a suitable container.
(5) Open the bleed valve on low pressure
(4) Leave the fuel tank cap off for about 15
filter assembly (1, figure 1-3). When a
minutes to let gasoline fumes escape.
steady flow of hydraulic fluid shows that
Start up the engine and let it run until it
all traces of air have been removed, close
stops by itself.
the bleed valve.
(6) Install the cap on the fuel tank.
b. Hydraulic System. Drain the hydraulic system
If you have trouble bleeding the hydraulic
system, check the filter element of the
(1) Get a container that can hold about 30
l o w pressure filter assembly.