MIL-P-53108(ME)
lubrication shall not require energizing the engine starter motor. Engine oil to be at operational level; this control shall be mounted in the instrument panel.
l. Heavy duty cooling system, shall be capable of maintaining the manufacturer's
recommended coolant temperature while operating at rated capacity and head in an ambient temperature of 120 F. The radiator shall have provisions for cleaning from the front, using air.
m. Instrumentation consisting of lubricating oil pressure gage, coolant temperature gage,
tachometer-hourmeter, battery charging indicator and an air cleaner restriction indicator.
n. Engine mounting equipped with a minimum of 4 axial and 4 lateral jacking screws to facilitate alignment of the pump and engine under field conditions.
3.12.1 Engine enclosure. The engine shall be provided with a sheet metal, noise abating enclosure that shall enclose the engine sides, top (except for the exhaust connections), and ends (except for openings for cooling air). The enclosure shall be designed for maximum accessibility for ease of maintenance or replacement of components. Doors or access panels shall be provided as necessary and shall be fitted with flush-type latches, clamps, or hinges and shall be
self-supporting in the open position. Spring-loaded side panels shall not be used. The enclosure
shall be utilized to the maximum extent in control of temperatures around pump unit components and in noise control. Ambient temperatures around engine accessories, batteries, and electrical components shall not exceed 160 F for any load in an ambient temperature of 120 F. Covers shall be provided for air intake and exhaust if necessary. The pump shall be mounted externally to the enclosure. All doors and access panels which should be closed or in place when the pump unit is operating shall be conspicuously marked to indicate this requirement as specified in 3.8.
3.12.2 Connect/disconnect clutch. The engine shall be equipped with a connect/disconnect clutch that will permit operation of the engine without the pump operating to allow for engine warmup.
3.13 Automatic engine/pump controller. The pump unit shall be equipped with an automatic engine/pump controller. Throttle control for the pump unit shall be provided exclusively by the automatic engine/pump controller. The automatic engine/pump controller shall provide for two modes of operation: (1) Manual engine speed control, (2) Discharge and suction pressure
control.
3.13.1 Operator controls. The operator controls shall be located on the instrument panel, similar to the one shown in figure 3, and shall consist of an adjustable two-position selector switch and a set point adjustment. The operator's controls shall be labeled as to function as specified in 3.8. The adjustable two-position selector switch shall provide operation in either of the two modes "manual engine speed control" or "automatic discharge pressure control". Engine starting shall be possible only when the two-position switch is in the manual engine speed
control position. The second operator control shall be an adjustable device that will function as a set point adjustment. When the two-position switch is in the manual engine speed control position, the set point adjustment shall establish the operating speed of the engine selected by the
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