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Figure 4-4. Hydraulic System , Schematic Diagram
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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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Hydraulic System.
TM 55-4920-405-13&P
Section III.
through the control panel, Handle the
4-4. REMOVAL AND DISASSEMBLY. Remove
AMMETER  carefully.
and disassemble only those parts authorized at the
(d) Replace the defective AMMETER.
i n t e r m e d i a t e maintenance levels
------  --
(5) Reservoir Fluid Level Indicator Gage. To
--AUTION
C --
--
remove RESERVOIR FLUID LEVEL INDI-
CATOR gage (10, figure 2-1), proceed as
Before making repairs, disconnect both
follows:
battery cables from the battery terminals.
(a) Remove the nuts that attach the elec-
a.  Electrical  System.  Remove and disassemble
trical leadwires to the studs at the
parts of the electrical system as follows:
rear of the gage.  Tag the leadwires
so that you can reconnect them
(1)
Ignition Wire Assembly.
correctly.
(b) Remove the u-clamp from the gage.
(a) Remove the nut that fastens each igni-
Push the gage out of the control panel.
tion wire to a spark plug (2. figure
Handle the gage carefully.
(b) Remove) the nut that fastens each igni-
(c) Replace the defective gage.
tion wire to magneto (1).
( 6 ) Fuel Level Gage. To remove FUEL
(c) Remove the screw and lockwasher
LEVEL gage (4, figure 2-1), proceed as
that attaches the ignition wire clip to
follows:
the engine.  Remove the ignition wire
assembly.
(d) Replace all defective ignition wires.
(a) Remove the nuts that attach the elec-
trical leadwires to the studs at the
rear of the gage.  Tag the leadwires
(2)
Starter Motor.  To remove starter motor
so that you can reconnect them
(9, figure 4-5) proceed as follows:
correctly.
(b) Remove the u-clamp from the gage.
(a)
Disconnect the electrical cable from
Push the gage carefully out of the con-
the starter motor terminal.
trol panel.  Handle the gage with care.
Remove the two nuts and lockwashers
(b)
(c) Replace the defective gage.
that attach support bracket (8) to the
engine.
(c)
( 7 ) Electrical Wiring and Cables. To remove
Hold the starter motor up, and re-
electrical wiring or cables, proceed as
move the three bolts and lockwashers
follows:
that attach the starter motor to the
engine.
(a) For electrical wires or cables that
(d)
Pull the starter motor and support
are not laced or taped into a wiring
bracket free of the engine.
harness, disconnect the wire or cable
Remove the screw and washer that
(e)
at both ends.  Then, remove it from
attach the starter motor to the sup-
the test stand.
port bracket, and remove the starter
motor from the support bracket.
(b) For electrical wires or cables that
are laced or taped into a wiring
(f)
Replace the defective starter motor.
harness, disconnect both ends. Cut
back one end, and try to snake the
(3)
Temperature Switch. To remove the
wire or cable out of the harness. If it
temperature switch from manifold (6, fig-
cannot be snaked out of the harness,
ure 4-6), disconnect the electrical lead-
cut back the other end as well, and let
wire from the temperature switch. Then,
it remain in the harness.
unscrew the temperature switch. Replace
a defective temperature switch.
(8) Starter and Ignition Switches. To remove
(4)
A m m e t e r . To remove AMMETER (3,
STARTER switch (5, figure 2-2) or IGNI-
figure 2-1), proceed as follows:
TION SWITCH (2), proceed as follows:
Remove the nuts that attach the lead-
(a)
Disconnect the electrical leadwire
wires to the studs at the rear of the
(a)
lugs from the switch terminals. Tag
AMMETER.
the leadwires so that you can recon-
(b)
Disconnect the leadwires and tag them
nect them correctly.
so that you can reconnect them
Using a wrench, back off the nex nut
correctly.
(b)
at the rear of the control panel. This
(c)
Remove the u-clamp from the meter.
will loosen the switch.
Push the AMMETER carefully out
4-12

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