Figure 9-57.—Aero 33D/E bomb truck with an Aero 62A tray adapter and an Aero 36A outrigger assembly installed.
naval aircraft. The major difference between the Aero
33D and the Aero 33E models is that the Aero 33D
model has both electric and manual controls, while the
Aero 33E model features only manual controls for use
with a hydraulic lift system. Except for the electrical
features on the Aero 33D, the information contained in
the following paragraphs is applicable to both models.
The Aero 33 D/E bomb truck is a high-lift,
heavy-duty truck. The main frame is welded steel. The
hydraulically operated arms have a variable lifting
height between 30 and 63 inches. The truck has an SWL
of 4,000 pounds.
The truck is equipped with
front-wheel mechanical brakes that are normally in the
locked position. You can release the brakes by actuating
the brake release handle on the drawbar or by the
deadman brake lever on the drawbar socket.
The bomb truck is equipped with an Aero 62A tray
adapter (fig. 9-57) attached to the lifting arms. The Aero
62A adapter is a rectangular metal tray, One end is open
so the MHU-191 weapon skid can be easily pushed onto
the bottom plate.
A pair of hooks mounted in two
brackets on the bottom of the tray hold the skid in place.
The brackets have 40 holes spaced 1 inch apart. This
lets you move the hooks to a suitable positions for
holding stores of varying lengths. The hooks are
secured to the brackets by two detent pins and can be
swiveled from a vertical to a horizontal position. A
cable assembly provides control of the hooks from
outside the tray. You can tilt the tray in the fore and aft
vertical plane (20 degrees nose up or 10 degrees nose
down) by turning a tilt control crank, located on either
side of the truck This lets you horizontally match the
store being loaded with the attitude of the aircraft.
The bomb truck is a four-wheel vehicle equipped
with solid rubber tires. By moving the drawbar, you can
rotate the front wheels through an 84-degree arc. When
positioning the bomb truck for store loading, you can
rotate all four wheels through slightly more than a
180-degree arc as the wheel locking pins are pulled up
and disengaged from the wheel swivel.
The hydraulic system is suitable for operation at a
maximum of 3,000 psi hydraulic pressure. This is
required to lift capacity loads with the truck. The
hydraulic manual controls are duplicated on either side
of the truck. A hydraulic control valve is located inboard
and under the left battery box. It actuates part or all of
the hydraulic system.
With the valve in the open
position, you can operate both the left and the right
lifting arm simultaneously if either or both of the
hydraulic pumps are actuated. Closing the control valve
permits manual operation of either the left- or right-hand
lifting arm. This is accomplished by manually operating
the appropriate left- or right-hand hydraulic pump.
When only one lifting arm is being actuated, limit load
movements to a few inches. When the control valve is
open, both of the lifting arms can be lowered
simultaneously by using either the left- or right-hand
manual release valves. The manual release valves will
lower the lifting arms at a variable rate of speed.
Restrict this operation to moving the load only a few
inches.
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