TM 5-3805-255-14
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EQUIPMENT DESCRIPTION
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1. Overview.
THe H100C is a commercial 4.5 or 5.0 cu. yd. capacity Loader, Scoop Type, DED, 4 x 4, Articulated Frame
Steering: International Harvester Company Model H100C, rubber-tire mounted. When equipped with the
4.5 cu. yd. spade nose rock bucket it is referred to as the Type I Loader (NSN 3805-01-052-9042). When
equipped with a 5.0 cu. yd. general purpose bucket it is referred to as the Type II Loader (NSN 3805-01-052-
9043). The loader will be identified by the CCE Manufacturer's Serial Number and the United States Army
(USA) Number.
The loader is powered by an International Harvester Engine DT-817C which develops 290 Net HP at the fly-
wheel and 320 maximum horse power at 2,100 RPM. The powertrain consists of a single stage, single phase,
three element torque converter, an input charging pump and a power take-off to drive the loader system pump
and the combination power steering-cooling circuit pump. The torque converter drives a full power shift trans-
mission. The transmission has four speeds in both forward and reverse and full power shift in all ranges. Both
axles are full floating, double reduction type. The axles are rigidly attached to their supporting members; the
front main frame is the case for the front axle and an oscillating cradle called a bolster for the rear. By allowing
the rear axle to oscillate, the tractor is assured greater stability in rough terrain. The first gear reduction takes
place in the differential; the second in the planetaries. Each wheel revolves on two tapered roller bearings
mounted on the axle spindle. The axles are full floating. None of the weight is supported by, or transmitted to,
the axle shafts. All weight on the axle is supported by the wheels, bearings, and axle housings. The differential
assemblies are rigidly mounted, one on the forward side of the rear axle housing and one on the rear side of
the front axle housing. The differentials are connected by splined yokes on the propeller shafts from the trans-
mission.
The brake system is a combination of air over hydraulic. An engine driven compressor supplies compressed
air for the system. The compressed air is stored in the air reservoir and the output is regulated by a governor
between the compressor and the reservoir at 90 to 105 psi (620.5 - 723.9 kPa). The hydraulic system is a
closed system with controlled pressure and vacuum relief. The reservoir has a capacity of approximately
54 gal. (204.4 L). The loader has a speed of 21.4 mph (34.4 kph). The fuel tank capacity is 115 gal. (435.3 L),
and the equipment will use approximately 50.4 gallons (190.7 liters) of diesel fuel with the engine operating at
2,100 RPM, for a period of 5 hours. With the engine lubrication oil levels filled as prescribed, lubrication oil
pressure will be maintained on a 30 percent side slope and a 60 percent longitudinal slope.
2. Bucket. The general purpose bucket (Type II) has an SAE nominal heaped rating of 5.0 cu. yd., and eight (8)
bolt-on teeth with replaceable tooth tips. Measured width of bucket is 130.5 in. (331.5 cm). 10 ft 10-1/2 in.
3. Rock Bucket. The spade nose rock bucket (Type I) has an SAE nominal heaped rating of 4.5 cu. yd.
Measured width of bucket 130 in. (330.2 cm). 10 ft 8 in.
4. Steering System. The loader has articulated frame steering with 38 degrees of articulation in each direction.
5. Tires. Standard tire size 26.5 x 25. Optional tire size is 29.5 x 25. Tire ply rating range is 14-22 ply. Sufficient
clearance is provided to mount the L-5 type tires without removal of any components.
6. Electrical System. The loader has a 24VDC electrical starting and lighting system with necessary fuses and
circuit breakers. All control switches are located on the dash within reach of operator. The system has a nega-
tive ground circuit.
7. Alternator. The loader is equipped with an engine-driven alternator and self-contained compatible regulator.
The alternator is 24VDC with 45 amp rating.
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