09pr11 374d hex
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hydraulic power combines with larger digging arm and bucket cylinders to yield 17 percent
higher digging arm forces and 12 percent higher bucket forces on machines with the standard
(reach) boom and arm configuration. For units in the mass excavation configuration, digging arm
forces also are up by 17 percent and bucket forces by 5 percent. The net result is shorter cycle
times and increased bucket fill factors.
Also new in the 374D implement hydraulic circuits are electrically controlled regeneration
valves, which assure positive response from the boom and digging arm cylinders. In addition to
further reducing cycle times, the new valves yield an estimated fuel saving of more than 2
percent. Also saving fuel is the hydraulically driven, variable-speed cooling fan.
Buckets, undercarriage, serviceability
A new line of buckets for the 374D are designed for added strength and durability to
accommodate the higher digging forces of the new machine. Bucket types include general duty,
heavy duty, severe duty and extreme duty. All Cat buckets feature K Series GET (Ground
Engaging Tools). Work tools for the 374D extend the machine application into such operations
as demolition, scrap processing and quarry work.
Undercarriage improvements include redesigned track links that operate with less stress,
improved carrier rollers, longer recoil springs for extended service life and new forged idlers for
improved durability. The new idlers are positioned lower to promote added stability, and a 6-inch
(160-mm) track-gauge increase further enhances the stable work platform.
In addition, the carbody (the structure mounting the machine upper to the track assemblies) is
reinforced at the roller-frame interface, and a new bolt pattern is used at the connection point.
The boom foot, skirt and counterweight mounting area also have been strengthened for longer
service life and increased durability.
To facilitate routine maintenance, the 374D uses protected fluid drain ports and self contained
hoses, spin-on filters, an integral pre-cleaner in the air cleaner (with electronic restriction
sensing), testing ports in all pressure circuits and pressurized fluid sampling ports to assure
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reliable samples. Also, the Electronic Power Control (EPC) is now located in the air-cleaner
compartment, allowing the cab floor to be washed without risk of damage to the EPC, although
the EPC and electrical terminals are weather-proof. For the operator's convenience, fluid levels
can be checked electronically at start-up.
Operator comfort and safety
For the operator's convenience and comfort, the height of the joystick consoles is now adjustable,
and the response of the joystick control levers can be adjusted to the operator's preference
through the monitor. The control pattern changer, also accessible through the monitor, allows
operators to select preferred lever functions.
The monitor provides a full-color graphic display with comprehensive machine information
(including fuel consumption) presented in either an English or ISO format. The monitor also
displays images from the optional rearview camera.
To diminish heat and noise in the cab, the hydraulic control valve, pumps and reservoir are
positioned away from the operator station. Metal-grating catwalks, 20-inches (500-mm) wide,
are located on each side of the upper structure to provide safe access to maintenance points. The
rear window, made of tempered glass, can be removed as a secondary exit.
Standard halogen lights provide exceptional jobsite illumination but can be replaced with
optional High Intensity Discharge lights on the boom and upper cab if more illumination is
required. Lights are time delayed to allow safe exit from the machine at night. As an added
safety measure, travel, swing and implement functions are locked out when the counterweight
removal system is activated.
Basic Specifications
374D 365C
Operating weight 156,819 lb (71 132 kg) 145,000 lb (66 000 kg)
Engine power (net) 476 hp (355 kW) 404 hp (302 kW)Max. hydraulic flow 232 gal (880 L) 218 gal (800 L)
Max. dig depth 31.7 ft (9.65 m) 31.0 ft (9.64 m)
Drawbar pull 110,718 lb (493 kN) 111,056 lb (494 kN)# # #
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CAT, CATERPILLAR, their respective logos, Caterpillar Yellow and the PowerEdge trade dress, as well as corporate and product identity used herein, are
trademarks of Caterpillar and may not be used without permission.
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The 374D combines added
horsepower, stronger hydraulics
and greater operating weight to
boost overall performance,whether trenching, loading,
lifting or handling attachments
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Cat 374D operating in a quarry
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Press Inquiries Americas:
Sharon Holling Amber Santor
Tel: 309-675-8995 Tel: 309-675-4693
Fax: 309-636-2738 Fax: 309-636-2738
Holling_Sharon_L@cat.com Santor_Amber_M@cat.com
Europe, Africa, Middle East:
Mia Karlsson
Tel: +41-22-849-4662
Fax: +41-22-849-9993
Karlsson_Mia@cat.com
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