RESTRICTED             SECTION I
                  AN 01-25CN-2             PARAGRAPH 1 & 2
      the lifting bar, one on each side of the fuselage. Do not weight the tail of the airplane by putting sand bags on the fuselage itself.      

An engine hoisting sling is furnished by the engine manufacturer. By attaching the sling to the studs (which hold the cylinder heads to the crankcase), the engine may be raised. Do not attempt, under any cir. curnstances, to hoist the airplane by means of the engJine hoisting sling attached to the engine. This sling is for the installation and removal of the engine only.

2. ERECTION.
     When assembling the fuselage to the wing, a number of men should be available. This operation should proceed slowly. Exercise great care not to damage any of the parts.

     The inside surface of the tee sections on the wing and the corresponding surface of the fuselage should be coated with a light grease before assembly.

     One man should be placed on top of the wing and the fuselage lowered over him. He should watch the front and the rear to see that the various unith in the cockpit are not damaged as the fuselage is lowered onto the wing.

     Units to be watched carefully are:

(1) ELECTRICAL WIRING.
      (a) Make sure that none of the electrical wiring is caught between the "tie" sections of the wing and fuselage.
(2) HYDRAULIC, FUEL, AND OIL LINES.
(a) Watch all hydraulic, fuel, and oil fines to see that they are not pinched or damaged in any way, if the fuselage should swing or sway when it is being lowered onto the wing.
(3) FIREWALL.
(a) The firewall should be watched to m* that it does not strike the wing.
(4) OIL "Y" DRAIN COCK.
(a) Do not let the fuselage swing back far enough so that the "'Y" drain will strike the wing; if it does, the "Y" drain may be bent or tom loose from the other structure.
(5) HEATING AND VENTILATING INTAKE DUCTS.
(a) Be careful that the intake ducts are not dam. aged in any manner while the fuselage is being lowered into position.
(6) MATCH ANGLE.
      (a) Be careful of the small part of the match angle which extends beyond the trailing edge of the wing, that it is not broken off.
          Lower the forward end of the fuselage slightly in advance of the rear, so the front fittings at Station # 1 may be engaged first. Then align and insert the bolts. Next lower the fuselage until the remainder of the holes are aligned. Insert a pair of trailing edge bolts, and the intermediate station (bulkhead) bolts. Insert and tighten evenly the remainder of the bolts. Insert the three bolts attaching the trailing edge of the wing to the fuselage (center).

    Two traveling hoists at least 18 feet high should be available for hoistine the fuselaze. The hoist at the forward end of the fuselage should have a capacity of 2 tons if only the fuselage is to be hoisted, and 4 tons if the complete airplane is to be hoisted. The hoist at the aft end should have a capacity of one ton.

      NOTE:      
      The nut for the last bolt may be tightened through a hole in the surface of the wing by opening the wing flaps.
      

    The tail of the airplani may now be supported from the lift tube bar by two stands, one on each side of the fuselage, leaving the weights in place, and then removing the rear hoist. Next, the front hoist may be removed and the front supported by jacks.

    The following is a list of installations and connections to be made after the wing and the fuselage are assembled.

    NOTE:      
      Complete instructions for installing the following items are contained in Section IV.
    
(1) Install the stabilizers.
(2) Install the fin.
(3) Assemble the rudder and elevators.
(4) Connect the elevator and rudder cables.
(5) Connect the trim tab controls.
(6) Connect the navigation light wires to the fin.
(7) Check all cable tensions after rigging the tail surface controls. (See Fig. 15.)
(8) Connect the hydraulic fines to the hand pumps.
(9) Connect the hydraulic lines to the hydraulic system control valve.
(10) Connect the hydraulic lines from the master brake cylinders to the brakes.
(11) Connect the hydraulic lines from the control valve to the wheel and flap retracting struts.
(12) Fill the hydraulic reserve tank in the fuselage, aft of the fuselage. access door, with Lockheed No. 5