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  TM 55-4920-231-14
reading on instrument being tested and time for
valve (10) at 20 psig reading on fuel pressure
excessive leakage. (Refer to table 3.)
gage (5, figure 7). Observe reading on instru-
(9) When case leak test is completed, turn
ment being tested and time for excessive leak-
knob (8, figure 4) to fully open external case
age. (Refer to table 3.)
leak valve (10).
h. When leak test is completed, turn knob
(10) Turn pressure INCREASE knob (12,
(8, figure 4) to fully open external case leak
valve (10).
CREASE knob (11) to open valve, allowing
i. Turn pressure INCREASE KNOB (12, fig-
readings to return to normal when tests have
ure 7) to close valve and turn pressure DE-
been completed.
CREASE knob (11) to open valve, allowing
(11) Stop the tester (paragraph 37).
readings to return to normal when tests have
been completed.
a. Perform the master instrument test (para-
graph 39f).
CAUTION
to close valves.
c. Turn PRESSURE selector knob (10) in
Do not permit oil to enter the lines as
FULL PRESSURE position and turn knob (11
it will damage the control and instru-
and 19) to close valves.
ments.
a. The tester can be carried from one work
and start the tester (paragraph 36).
area to another when the accessories are neatly
e. Turn pressure INCREASE knob (12, fig-
and compactly stowed in the cover compartment
ure 7) to open valve and adjust pressure DE-
(2, figure 3), which is installed on the tester,
CREASE knob (11) to provide the required sta-
and all access panels latched. Keep the tester in
bilized readings (figure 17) on fuel pressure
an upright position at all times when there is
gage (5, figure 7).
oil in the reservoir.
f. Observe reading on instrument being tested
b. Instructions relevant to shipment within the
at eaeh check point and record reading on cali-
continental United Statas and overseas are con-
bration card (8, figure 7).
tained in chapter 6.
g. Perform the case leak test by turning knob
(8, figure 4) to fully close external case leak
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