TM 11-6660-218-12
the bare metal to protect it from further
5-10. Touchup Painting
corrosion. Refer to the applicable cleaning and
Remove the rust and corrosion from metal
refinishing practices specified in TM 9213
surfaces by lightly sanding them with fine
--
and TB SIG 364.
sandpaper. Brush two thin coats of paint on
Section II. TROUBLESHOOTING AND REPAIR PROCEDURES
5-11. General
theodolite set will be found in the applicable
Troubleshooting and repair of Meteorologi-
manual covering the equipment (appx A).
cal Station, Manual AN/TMQ4 is based on
Perform the checks and corrective measures
the operational checks contained in the pre-
indicated in the troubleshooting chart for the
ventive maintenance checks and the services
anemometer, the cold weather and tropical
charts. Detailed troubleshooting and repair
thermometers, and the timer, as described in
procedures for the telephone, barometer, head
5-12. Troubleshooting Charts
a. Anemometer.
Checks and corrective measures
Probable trouble
Trouble symptom
I
I
Air bubbles in compass _ _ _ _ _ _ _ _ _ _ _ . Defective gasket_ _ _ _ _ _ _ _ _ _ _ Replace gasket (para 5-15).
Disassemble and repair in accordance with
Erratic movement of velometer Wind vane touching wall of air
procedures given in paragraphs 514
pointer.
passage.
and 515.
Check and repair or replace in accordance
Wind vane unbalanced _ _ _ _ _ _ _ _ _ _ Distortion of vane _ _ _ _ _ _ _ _ _ _ _
with procedures given in paragraph
515.
b. Cold Weather and Tropical Thermometers.
Checks and corrective measures
Probable trouble
Trouble symptom
I
I
Break in thermoteric fluid _ _ _ _ _ _ _ _ _ Tap stem of thermometer against palm of
Indications on identical thermom-
hand. Immerse bulb of thermometer in-
eters do not agree.
to crushed solid carbon dioxide (CO2,
dry ice).
Graduation markings not legible ___ Paint has worn off_ _ _ _ _ _ _ _ _ _ Replace thermometer.
c. Timer. If the timer operates erratically,
5-14. Anemometer ML-433A/PM
the spring motor is defective. Replace the
a. General. Disassembly procedures for the
timer.
anemometer are given below. The velometer
requires special equipment for calibration, and
the compass is a factory-sealed assembly. If
5-13. Organizational Repairs and Adjust-
either of these is defective, the anemometer
ments
must be replaced as a unit.
b. Disassembly of Anemometer.
Instructions for the repair of the anemome-
(1) Unscrew handle H213 from bracket
ter and the psychrometer are given in para-
A207.
graphs 514, 515, and 516. Tools and ma-
(2) Slide off cover assembly A201, and
terials required are listed in paragraph 52.
remove self-tapping screw H211.
AGO 8029A
5-4
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