Milton CAT 972H - Manual (Page 6)

• ACERT™ Technology maintains
engine performance, efficiency and
durability while reducing emissions
• Heavy duty components withstand
all operating conditions
• Strong, solid structures built to last
EPA TIER III, EU STAGE III COMPLIANT
C13 ENGINE. ACERT Technology
combines proven systems with
innovative new technologies to precisely
deliver fuel to the combustion chamber.
It maintains engine performance,
efficiency and durability while
dramatically reducing emissions.
The Cat C13 with ACERT technology
is a 12.5 L displacement, 6-cylinder,
electronically governed engine.
Electronic fuel injection is provided
through the well-proven Caterpillar
mechanically actuated, electronically
controlled unit injection (MEUI) system.
A wastegate turbocharger, equipped with
a titanium wheel for improved durability,
combined with air-to-air aftercooling
(ATAAC) provides consistent high
horsepower with increased altitude
capability.
Electronic Controller. The engine is
governed by an electronic control module
designated the A4:E4V2. The controller
continually adjusts engine output based
on load demand using a series of sensors
located on the machine and engine.
Mechanically Actuated Electronic Unit
Injectors (MEUI). The MEUI system has
been at work in Cat engines across the
product line with a proven track record of
consistent, durable, reliable performance.
Engine Block and Pistons. The gray,
cast iron engine block is made of the
same material as the cylinder heads.
Wall diameters are thicker than in
previous designs while adjustments have
been made to reduce sound levels and
increase rigidity. One-piece all-steel
pistons are housed within a wet,
replaceable cast iron cylinder liner
constructed of high-strength, heat-treated
castings. Steel-forged connecting rods
are larger in diameter and are connected
to the crankshaft with two bolts.
RADIATOR. Brazed aluminum
construction provides a stronger joint
for maximum durability and resistance
to leaks. The 6-fins-per-inch, square-
wave core design decreases the chance
of blockage and plugging.
POWERSHIFT TRANSMISSION.
The 972H continues to use heavy-duty
powershift transmission technology
proven on previous models and currently
used up through the largest wheel loader
built by Caterpillar – the 994F.
The planetary powershift transmission
features heavy-duty components to handle
the toughest applications. Built-in
electronic controls enhance productivity
and durability.
Control Throttle Shifting. Control Throttle
Shifting regulates engine speed during
high-energy directional changes for
smoother shifting and longer
component life.
Electronic Clutch Pressure Control.
Electronic Clutch Pressure Control
(ECPC) system modulates clutches
individually to improve shift quality,
component life and operator comfort.
Adjustment is simplified with all solenoid
valves externally mounted on top of the
transmission housing.
AXLES. The 972H axles are designed by
Caterpillar for durability in all operating
conditions. The front axle is rigidly
mounted to the frame to support the
weight of the wheel loader and withstand
internal torque loads as well as external
forces encountered throughout operation.
The rear axle is designed to allow ± 13°
oscillation. All four wheels remain on
the ground over uneven terrain providing
excellent stability and traction.
Integrated Braking System. The Cat
exclusive Integrated Braking System
reduces axle oil temperatures and
improves transmission neutralizer
smoothness. IBS has a direct impact
on durability of the axles and brakes
especially in applications involving
long distances and/or heavy braking.
6
Built Strong And Tough
DURABILITY