FFP
COOLANT HEATER-FUEL FIRED
equal strength to that of the
When code FFP is specified, for
specified steel.
diesel engine driven vehicles, a
FHD
HEAVY DUTY FRAME
diesel fuel fired engine water
When code FHD is specified, a
heater shall be provided to
heavy-duty frame having the
preheat the engine. The heater
following minimum RBM shall be
shall include a timer, a
provided.
thermostat and a circulating
Heavy Duty Frame Requirements
pump, and shall be connected to
RBM
the engine coolant system. The
CLASS
MINIMUM IN LB
heater shall be capable of
C
590,000
starting and operating at -51°C
(-60°F) and shall heat the
D
850,000
engine to 4°C (40°F) from -51°C
E
900,000
(-60°F) in not more than 1 hour.
F
1,300,000
The system shall be equipped
G
1,600,000
with a start light, visible to the
FJP
JET FUEL COMPATIBLE ENGINE
seated driver, to indicate that the
(DIESEL ONLY)
preheater is operating.
When code FJP is specified, the
engine
shall
operate
FFS
FUEL/WATER SEPARATOR,
satisfactorily using grade JP-5
HEATED
When code FFS is specified, a
fuel conforming to MIL-T-5624
heated fuel and water separator
under emergency, short duration
shall be the supplied.
conditions and on grade JP-8
fuel conforming to MIL-T-83133
FFP
FUEL FIRED ENGINE
under normal conditions.
A
PREHEATER
power loss when operating on
When code FFP is specified, for
JP-5 or JP-8 is acceptable.
diesel engine driven vehicles, a
diesel fuel fired engine water
FLU
FORK LIFT USE
heater shall be provided to
When code FLU is specified, a
preheat the engine. The heater
reinforced
floor
shall
be
shall include a timer, a
provided. The reinforced floor
thermostat and a circulating
shall withstand concentrated
pump, and shall be connected to
loads imposed by forklifts having
the engine coolant system. The
a 6350 kg (14,500 lbs.) axle load
heater shall be capable of
supported by 180 mm (7 inch)
starting and operating at -51°C
wide tires spaced 760 mm (30
(-60°F) and shall heat the
inches) apart on the tire
engine to 4°C (40°F) from -51°C
centerline. Floor design shall
(-60°F) in not more than 1 hour.
permit vehicle operation at
The system shall be equipped
speeds up to and including 121
with a start light, visible to the
km/h (75 mph), over improved
driver, to indicate that the
roads.
preheater is operating.
In addition to the above when
code FLU is specified for a
FG
FIBERGLASS BODY
refrigerated van, sides and front
When code FG is specified, the
of reinforced floor shall have an
maintenance/line body shall be
inverted skirt extending upwards
constructed of fiberglass having
for a distance of not less than
Page 46 of 79
to verify that this 7 4Y
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