 |
|||
|
|
|||
| ||||||||||
|
|  MIL-T-62222(AT)
3.4.15.2.5 Air cleaner blower motors. Each air cleaner blower motor shall provide a flow of
air through each blower outlet. The air cleaner blower motors shall be wired so they do not
operate unless the engine is running (see 4.6.16.2.5).
3.4.15.2.5.1 Air cleaner outlet system. The air cleaner outlet system (air cleaner to
turbocharger) shall be air tight to the extent that when a vacuum of 25 to 30 inches of water is
applied, the loss of vacuum shall not be more than three inches of water during a three minute
period (see 4.6.16.2.5.1).
3.4.15.2.6 Engine manifold heater. The vehicle wiring for the engine manifold heater shall
provide a switch-actuated vehicle battery circuit to the engine. Operation of the pushbutton
switch on the purge pump handle with the starter switch depressed, shall provide vehicular
battery voltage to pin "a" of the multiple connector at the engine electrical quick disconnect
(see 4.6.16.2.6).
3.4.15.3 Turret electrical.
3.4.15.3.1 Main gun firing circuits. The main gun firing circuits shall be capable of
providing the energy necessary [1.25 A for 100 milliseconds (ms)] to ignite the main round. The
firing circuit shall also provide the following (see 4.6.16.3.1):
a. The probe shall be grounded at all times, except during application of the firing
voltage.
b. The firing control circuits shall include the "dead man" switching feature which
prevents subsequently loaded rounds from detonating until the firing switch "trigger"
has been released after the previous round.
c. Interconnections shall be provided to allow firing circuit activation from the alternate
emergency switch on the manual elevation pump handle, and provide emergency
mode firing per 3.4.15.3.2.
3.4.15.3.2 Emergency mode firing. In the event of a firing circuit failure, the blasting
machine shall be capable of firing the round (see 4.6.16.3.2).
3.4.15.3.3 Coaxial machine gun firing circuit. The machine gun firing circuit shall be
capable of providing the energy necessary (13 A) to operate the machine gun solenoid
(see 4.6.16.3.3).
3.4.15.3.4 Main gun and machine gun circuit controls. The firing circuit controls will be
arranged and interlocked to allow the commander to fire the main gun and the coaxial machine
gun, and the gunner to fire the main gun and the coaxial machine gun. A safety switch, manually
operated from the loader's station, shall open the firing circuits to the main gun from the
commander's and gunner's station with the switch in the SAFE position. These circuits shall be
closed with the switch in the FIRE position (see 4.6.16.3.4).
10
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals