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|  MIL-Q-48555A(AR)
"200 MILS",
"0000
MILS",
"400 MILS", "600 MILS", "800 MILS", "1000
MILS", "1200 MILS", and "1400 MILS" elevation when the correction
counter indicates "00 MILSW.
The recorded readings shall indicate
the elevation counter settings within the values specified in
3.11.1, as measured on the inspection aid.
B a c k l a s h . With the quadrant mounted and oriented as
4.7.1.3.2
specified in 3. 9, set the elevation counter to "0000" by turning the
elevation knob clockwise. Do not over travel the "0000" setting.
Adjust fixture elevation to center quadrant level vial bubble within
the requirement of 3.9c. Measure and record angular setting with
gunner quadrant on the gunner quadrant seat of fixture, 11747194.
Rotate the elevation knob a minimum of one-half turn clockwise and
reset the elevation counter to "0000" by turning knob counter-
clockwise. DO not overtravel the "0000" setting. Adjust elevation
fixture to center the quadrant level vial bubble within the
requirements of 3.9c. Measure and record the angular setting the
same as above. The backlash is the difference between the two
readings, and shall meet the requirements of 3.11.2. In addition,
the above test shall be performed at -200, +200, 400, 600, 800,
1000, 1200 and 1400 roils, and can be performed in conjunction with
4.7.1.3.1.
(There shall be no undue pressure exerted on the housing
or the worm shaft, up or down, as the wormshaft is being turned to
perform the above tests.)
I
4.7.1.3.3 correction counter setting, affect on elevation
counter . This test shall be performed utilizing the method indicated
in 4.7.1.3.l. Position the quadrant as specified in 4.7.1.1.
Rotate the correction counter to +50 roils setting. The elevation
counter reading shall decrease an equal amount within the limits
specified in 3.11.3, as measured on the inspection aid. Rotate the
correction counter to -50 roils setting. The elevation counter
reading shall increase an equal amount within the limits specified
in 3.11.3, as measured on the inspection aid.
4.7.1.3.4 Correction counter setting, affect on elevation level
bubble. The position of the elevation level bubble shall conform to
the requirements of 3.11.4 when observed during the test specified
in 4.7.1.3.3.
The running torque required to rotate the knobs
4.8.1 Torque.
specified in 3.12.1, at standard ambient and extreme operating
temperatures, shall be determined with a standard torque measuring
The torque measuring device shall be equipped with the
device.
The
following adapters to fit the respective knobs being tested.
measured torque values shall be within the limits specified in
3.12.1.
13
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