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|  MIL-T-62531(AT)
of no less than 3.5. The rigging block (snatch-block) will have at least a 2.0 safety factor based
on the maximum anticipated force applied to it (see 4.4.4).
3.4.5 Engine diesel. The diesel engine furnished shall be the latest series or standard model,
tailored to meet the minimum performance and RAM-D requirements of this specification for the
________ metric ton vehicle (series and model). The vehicle shall be equipped with a liquid
cooled compression ignition two-stroke or four-stroke cycle diesel engine, with not less than
_______ cylinders, with a minimum gross horsepower rating of ______, and a no-load governed
speed not to exceed _____ RPM. The engine assembly shall include the following accessory
equipment. The vehicle throttle and engine accelerator shall comply with MIL-STD-1180,
Requirement No. 24 (see 4.4.5).
a.
Alternator and belts.
b.
Air compressor.
c.
Power steering pump and belts.
d.
Cooling fan and belts.
e.
Starter.
f.
Injection pump and nozzles.
g.
Lube filter.
h.
Water pump and belt.
i.
Tachometer drive adapter
j.
Temperature and pressure sending units.
k.
Primary positive fuel shut-off.
1.
Emergency, immediate positive fuel shut-off.
m.
Flywheel housing.
n.
Flexplate and starter ring gear assembly.
o.
Cold weather starting aid for minus 4 Celsius (C) (complete with piping and
electrical harness(s))
p. Fuel filter system.
3.4.5.1 Production engine settings and requirements. The engine assembly with alternator,
air compressor, and power steering pump operating unloaded and corrected to standard
conditions as established in SAE J816 shall meet the following requirements (see 4.4.5.1):
a. Net horsepower, ______-_______ observed horsepower with engine operating at
________ + ________ percent rpm.
b. Peak torque, _______ Newton-meters (N m) observed.
c. Fuel consumption shall not exceed ______ + ______ percent kilograms per observed
brake horsepower per hour (BHP) with the engine operating at full load and speed,
without fan.
d. Oil consumption, ________ kilograms per observed BHP hours maximum at full
load throughout the speed range of the engine.
3.4.5.2 Engine governor. The engine governor provided shall be set to limit engine speed to
not more than _____ rpm, no load. The governor shall be sealed, or constructed so that any
tampering with the setting shall be readily apparent (see 4.4.5.2).
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