Section II: PREPARATION FOR USE

TM 55-4920-335-14

SECTION II

PREPARATION FOR USE

2-1. PRELIMINARY INSPECTION. Carefully inspect the Test

WARNING

Stand for possible damage during shipment. Make certain

that:

When filling fuel tank, always maintain a

constant metal-to-metal contact between

a. All gages and controls on control panel (3, figure 1-3)

filling neck and spout to prevent sparking

are undamaged and securely mounted.

caused by static electricity.

b. All major components (figures 1-1 through 1-4) are

2-6. HYDRAULIC SYSTEM. To prepare hydraulic system for

undamaged and securely mounted.

use:

c. Plumbing is undamaged and all fittings are tightly

a. Open access door (2, figure 1-2) and remove rear

connected throughout the hydraulic system.

access panel (1). Open drain valve on bottom of reservoir (1,

figure 1-4) to drain preservative fluid from system.

Hand operated controls and switches operate freely.

b. Close drain valve and remove filler cap from neck of

All electrical connections are secure.

reservoir.

Fill reservoir with hydraulic fluid, Military

Specification MIL-H-5606. When hydraulic fluid reservoir level

2-2. PREPARATION FOR USE. The Test Stand is shipped

indicator (8, figure 3-1) registers full, stop pouring fluid.

completely assembled. To prepare Test Stand for operation

proceed as follows:

NOTE

a. Remove tape from seams, doors, panels, louvers,

Ignition switch (25, figure 3-1) must be

and ventilation openings.

ON during this operation. Do not overfill

reservoir. Expansion space in reservoir

b. Remove barrier material from ventilation openings

is necessary for satisfactory Test Stand

and louvers.

operation.

Remove bags of desiccant from inside housing.

Open reservoir shutoff valve (1, figure 3-1).

Check tire pressure. Normal pressure is 65 psi.

d. Open bleed cock on top of low pressure filter (7,

figure 1-3). When hydraulic fluid overflows and all traces of air

2-3. PRELIMINARY LUBRICATION. Check all lubricating

are removed, close bleed cock.

points referred to in Section IV. Be sure initial lubrication exists

at all specified points.

e. Remove dust cap from suction inlet (7, figure 1-2) and

unseat seal in fitting until solid fluid flow indicates all traces of

2-4. BATTERY. The battery (10, figure 1-3) is shipped dry

air are removed. Reseat seal in suction fitting and replace dust

charged and must be filled with electrolyte and charged before

cap.

use. Observe the following procedures:

Connect 1/2 inch hose to 1/2 inch outlet (9, figure

a. Allow battery to stand at least one hour before filling

1-2).

cells with electrolyte using diluted sulphuric acid, Federal

Specification O-A-111.

Fill cells to level indicator or

g. Set outlet selector valve (15, figure 3-1) to 1/2 inch

approximately 3/8 inch over plates.

outlet position. Open 1 /2 inch outlet valve (16, figure 3-1).

b. Charge battery at a rate of approximately 2 amperes

h. Remove filler cap from reservoir. Remove coupling

for at least 12 hours or until four consecutive hourly readings

from other end of 12 inch hose and insert hose-end into

do not indicate a rise in specific gravity or voltage.

reservoir filler.

2-5. FUEL SYSTEM. Open access door (4, figure 1-2) and

i. Start Test Stand (see paragraph 3-3) and circulate

remove filler cap from neck of fuel tank (4, figure 1-4). Fill tank

fluid into reservoir until all traces of air are removed.

with fuel conforming to Military Specification MIL-F-5572 or

MIL-G-3056, grade 70-75. Capacity of tank is 13 gallons.

j. Shut down Test Stand (see paragraph 3-6) and

reconnect coupling removed from hose.

Repeat f thru j with 3 /4 inch hose and 3/4 inch outlet.

2-1