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Figure 2-3. Magneto Control - TM-55-4920-405-13-P0031
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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 3-1. Test Stand Packing/Unpacking - TM-55-4920-405-13-P0034
TM 55-4920-405-13&P
CHAPTER 3
AVIATION UNIT MAINTENANCE INSTRUCTIONS
Section I. PREPARATION FOR INSTALLATION, STORAGE, AND SHIPMENT
NOTE
3-1. PREPARATION FOR INSTALLATION.
If the engine crankcase has been filled with
a. Uncrating. Remove the test stand from its
corrosion preventive compound for storage
shipping container (figure 3-1) as follows:
or shipment, drain all corrosion preventive
(1) Disconnect the tie down straps.
compound before lubrication.
(2) Connect cable slings to the lifting eyebolts
of the test stand. Using a lifting device
f.  Battery Activation. The battery is supplied
that can lift over 2000 pounds, lift the test
with the test stand, but is not activated. The battery
stand out of its shipping container.
must be activated as follows:
b. Unpacking. After uncrating the test stand, do
WARNING
the following:
(1)  Remove all pressure sensitive tape from
The battery generates explosive gas; keep
seams, doors, panel screens, and ventila-
flames, sparks, and hot glowing objects
tion ducts.
away. Ventilate the area while charging
(2)  Remove all barrier material from ventila-
a battery. The battery heats up during
tion ducts and screens.
activation.  Wear protective gloves if you
(3)  Remove all dessicant bags from inside the
have to handle the battery before it can
test stand cabinet.
cool down.
(4)  Remove pressure sensitive tape from all
------ --
sealed openings.
CAUTION
------ --
c. Cleaning. After unpacking the test stand,
Never add acid to the battery. Do not
clean it as follows:
break seals until the battery is to be
(1) Remove preservative from the outside sur-
activated. Do not use mineral water to
faces of the test stand with solvent (item
activate the battery; use fresh, clean
water from the cold water tap.
(2) Blow away dust and loose packing material
from the test stand, using a low pressure
(1) Open the flip cap vents along the center
air source.
line of the battery top. Using the knockout
tool supplied with the battery, break the
d. Preinstallation Inspection. Carefully inspect
seal in each of the six vent tubes. Do not
the test stand for any signs of damage that might
try to retrieve the sealing discs.
have occurred during shipment. Correct all
(2) Close the flip cap vents.
deficiencies. Make certain that:
(3)  Remove the initial fill caps along the edge
(1) All gages and controls on the control
of the battery top. Using the knockout
panels are not damaged, missing, or
tool, break the seal at the bottom of each
loose.
of the six filler tubes. Do not try to re-
(2) All major components (figures 1-2 and
trieve the sealing discs.
1-3) are not damaged, missing, or loosely
mounted.
-- UT.IO--
CA .
N
(3) Hydraulic tubing is not damaged, and all
Keep your fingers out of the filler tubes.
fittings in the hydraulic and fuel line sys-
Newly exposed surfaces may have a film
tems are tightly connected.
of concentrated acid.
(4) All hand operated controls and switches
operate freely.
(4)
Pour clean, cold tap water slowly through
(5) All electrical connections are tight.
the filler tubes until the water level in
(6) All four tires show no signs of deep cuts,
each cell is up to the bottom of the filler
fabric breaks. or excessive wear.
tube.
(7) All tires are inflated to about 60 PSI.
(5)  Install the initial fill cap filler plugs.
Press them down firmly, and make sure
e. Preliminary Lubrication. Check the oil level
that they rest on the cover. These plugs
in the engine crankcase. Make sure that all points
need never be removed again.
listed in table 3-5 are properly lubricated.
3-1

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