MIL-V-62008B(AT)
3.4.9.18 Main gun and machine gun circuit controls. The firing circuit controls shall be arranged and interlocked to allow the commander to fire the main gun, coaxial machine gun, and the cupola machine gun and to allow the gunner to fire the main gun and the coaxial machine gun. The main gun shall be provided with production against accidental firing by a loader's safety switch which interrupts the commander and gunner firing circuits automatically during gun recoil. The switch shall thereafter remain in the safe (open circuit) position until manually returned to the fire (closed circuit) position by the loader. The blasting machine shall provide an alternate source of electrical power for emergency firing of the main gun through the loader safety switch.
3.4.9.19 Smoke grenade discharger circuits.
3.4.9.19.1 Arming. The power-on (ready) lamp in the grenade power box shall illuminate when the master battery switch, turret power switch, and the grenade system power switch are all on.
3.4.9.19.2 Circuit voltage. Voltage at the smoke grenade discharge firing pins shown in figure 6 shall be as indicated in table I when the power-on (ready) lamp in the grenade power box is illuminated and the appropriate firing pushbutton is actuated.
TABLE I - Grenade discharger circuit voltage.
Firing pushbutton |
Left discharger firing pins |
Right discharger firing pins |
Voltage |
Right Right Left Left |
1, 2, 5 3, 4, 6 3, 4, 6 1, 2, 5 |
3, 4, 6 1, 2, 5 1, 2, 5 3, 4, 6 |
Vehicle (Ref. 3.4.9.7) 0 0.5 VDC Vehicle (Ref. 3.4.9.7) 0 0.5 VDC |
3.4.10 Vision devices and receptacles. Provisions shall be made to assure that receptacles incorporated in the vehicle will except applicable vision devices without binding or interference. The gunner and commander periscope receptacles shall accept the periscopes, and when installed, removed, and reinstalled the line of sight shall not deviate more than 0.2 mil from the line of sight of initial installation setting. When installed, the periscope receptacles, vision devices, and vision blocks shall prevent the entrance of water into vehicle.
3.4.11 Welding repairs. Welding repairs of any type or class shall be made only when specifically authorized by the acquisitioning activity.
3.5 Break-in run.
3.5.1 Preparation. Prior to break-in run, the vehicle shall be completely assembled and adjustments completed. Vehicle, including all components requiring lubrication shall be lubricated and serviced with fuel as directed (see 6.4). Lubricants and fluids shall be as specified in Production Lubrication Drawing D10940135 detail of EPL 8736334. Engine oil conforming
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