AN 01-25CN-2             PARAGRAPH 6
  CAUTION:  
Solvent and cement vapors are somewhat toxic if inhaled over a long period of time. A respirator designed for organic vapors should be worn if the operator is exposed to high vapor concentrations (working inside liners) for more than one hour in twenty-four.

  DANGER:  
Vapors are highly inflammable and should not be allowed to accumulate. No sparks, smoking, or open flames should be allowed near the place where cementing is being done.

  7. FIXED EQUIPMENT GROUP.

    a. INSTRUMENTS. -The instrument board is mounted on two supports at the bottom and braced by two rods at the top which are attached to the front armor plate. The supports and braces are mounted on bushings. The support bushings are 150 P20 (monel) and are installed with the load-rated sides toward each other. Replacement of these bushings and washers should coincide exactly with the original installation.

  (1) LIGHTING.

    (a) INSTRUMENT BOARD.-The dial, indicators, and controls are painted with fluorescent paint, which becomes luminous under light from two small spot lights (type C-5) located on each side of the cockpit.

    (b) COCKPIT-The wing fuel gage on the cockpit floor is individually lighted by a switch on the instrument panel.

    (c) SWITCHES AND RHEOSTATS. - The rheostats for the gun sight and spotlights are on the electrical control panel.

  (2) INSTRUMENT BOARD.-The following instruments are mounted on the instrument board:

  (See figure 56.)

    (a) Turn and bank Indicator.

    (b) Airspeed Indicator.

           (c) Compass.

    (d) Altimeter.

    (e) Clock.

    (f) Manifold Pressure Gage.

    (g) Tachometer.

    (h) Thermometer, Coolant.

    (i) Engine Gage Unit.

    (j) Radio Contactor (provision only).

    (k) Fuel Quantity Indicator.

    1. The fuel quantity indicator for the fuselage tank is of the magnetic coupling type.

    2. The fuel quantity indicator for the main wing tank is of the magnetic Boat type and located in the floor of the cockpit. This gage is individually lighted. The lighting is controlled from a switch on the main switch panel.

    (f) Ammeter.

    (3) PITOT STATIC TUBE.-An electrically heated "spear head" air speed head is installed near the tip of the left wing. The heating unit in this air speed head requires 24 volts for satisfactory operation. The air speed lines are made of 1/4-inch O.D. aluminum &Hoy tubing, with triple solder-less fittings. Drain plugs for the air speed lines are located in the bottom surface of the wing, inside the landing gear fairings.

  b. SURFACE CONTROLS. (See Fig. 91.)

    (1) GENERAL.

    (a) AILERON CONTROL-The control stick and allcron control torque tube are supported as a unit by two bearings bolted to the wing match angle. Each aileron system consists of an adjustable link connected to an arm on the control stick torque shaft, and extending down through the wing to a bell crank. Cables run aft from the beU crank and then outboard to a drum which operates the aileron through an eccentric arm.