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|  MIL-T-52843C
adjustment range. Belts shall be accessible for easy replacement.
Provisions shall be made for disconnecting the fan when necessary for
water fording operations without affecting coolant circulation within
the engine. Fan disengagement, shall be controlled from the
operator's compartment with a control labeled "Fan ON-OFF". A welded
wire or expanded metal fan guard shall be provided.
3.10.2.6.2 Water pump. When utilized, the water pump(s) shall be
of the centrifugal type, shall be replaceable, and shall be equipped
with shaft seals that will prevent leakage. The shaft shall be
corrosion resistant when exposed to water and a mixture of ethylene-
glycol and water. Either a lifetime lubrication system or accessible
pressure lubrication fittings shall be provided.
3.10.2.6.3 Thermostat. When utilized, the thermostat shall be in
accordance with the engine manufacturer's recommendations. The
thermostat shall be removable.
3.10.2.6.4 Radiator. When utilized, the radiator assembly shall be
a heavy duty type and shall consist of a core with an expansion tank
and sediment tank. Where the top of the radiator is lower than the
top outlet of the engine, a surge tank may be used. The radiator cap
shall meet the requirements of SAE J164 and be accessible without
removal of the engine hood. The radiator shall be mounted to prevent
its being damaged due to shock and racking experienced in normal
operation of the forklift. The radiator shall be protected by a heavy
grilled guard or by the counterweight. A shield shall be provided, if
necessary, to protect the radiator from mud and gravel thrown by the
tires. Hoses shall clear the forklift structure and other components
under all operating conditions specified herein. The cooling system
shall include baffles and shroud to prevent recirculation of cooling
air. A sign warning "CAUTION -DO NOT OPEN WHEN HOT" shall be placed
near the radiator cap.
3.10.2.6.5 Gaskets, seals, and packing When utilized, gaskets,
.
seals, and packing used in the cooling system shall be made of
materials capable of resisting deterioration from mixtures of water
and ethylene-glycol-base antifreeze conforming to SAE J1034 or MIL-A-
46153.
3.10.2.6.6 Engine coolant hose. When utilized, all engine coolant
hoses shall be SAE J20, heavy-duty type. All hose clamps shall be of
the double wrap stainless steel type in accordance with SAE J536,
type F, style 1, 2, or 4.
3.10.2.7 Governor. A governor shall be provided to limit the
engine speed to not more than the intermittent duty speed recommended
by the engine manufacturer when the forklift is operated under any
condition specified herein.
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