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
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business