MIL-DTL-62267B(AT)
3.4.18.3 Operator and assistant operator's seat. With the operator or assistant operator
in seated position, the force required to actuate the fore and aft seat adjustment lever shall not
exceed 12 lbs (5.5 kg) at the end of the lever (see 4.5.4.18.3).
3.4.18.4 Fuel shutoff valve. Engine shall stop firing and rotating within a maximum of
30 seconds after the manual fuel shutoff valve is actuated to the "OFF" position (see 4.5.4.18.4).
3.4.19 Fire extinguisher. The fixed fire extinguisher system, when installed in accordance
with applicable drawings, shall be readily accessible for operation internally or externally.
Actuating the internal controls shall simultaneously stop the supply of fuel to the engine. The
maximum effort required to discharge the system either internally or externally shall be not more
than 55 lbs (25 kg). A time delay of more than 6 seconds but less than 11 seconds shall occur on
the first shot between actuating of the release mechanism and entrance of C02 into the engine
compartment (see 4.5.4.19).
3.4.20 Personnel heater. The heater shall be capable of starting with the switch in either
high or low position. The blower motor shall operate at reduced speed when the heater is turned
on. The burner shall ignite within 4 minutes of heater turn-on. Subsequent to ignition, the heater
shall be capable of generating high or low heat and the blower motor shall run at full speed.
Turning the heater "off" shall cause both the burner to extinguish and the blower motor to shut
off within 3.5 minutes (see 4.5.4.20).
3.4.20.1 Heater fuel pressure. With either of the fuel system pumps and the heater pump
operating, the chassis fuel system shall produce a minimum pressure of 7 pound per square inch
(psi) (48 kilopascals (kPa)) at the outlet of the heater pump line (see 4.5.4.20).
3.4.21 Engine smoke generator. The chassis shall discharge smoke from both exhaust
pipes when the engine is running and the smoke generator switch is in the "on" position
(see 4.5.4.21).
3.4.21.1 Smoke grenade discharger circuits.
3.4.21.1.1 Arming. The power-on (ready) lamp in the grenade power box shall illuminate
when the master battery switch and the grenade system power switch are both ON
(see 4.5.4.21.1.1).
3.4.21.1.2 Circuit voltage. Voltage at the smoke grenade discharger firing pins shall be
indicated at table I when the power-on (ready) lamp in the grenade power box is illuminated and
the appropriate firing pushbutton is actuated (see 4.5.4.21.1.2).
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