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Rock Scraping. Scraping rock and
finishing work is easy and fast.
SmartBoom simplifies the task and
allows the operator to concentrate
on stick and bucket, while boom
freely goes up and down without
using pump flow.
Hammer Work. The front parts auto-
matically follow the hammer while
penetrating the rock. Blank shots or
excessive force on the hammer are
avoided resulting in longer life for
the hammer and the machine. Similar
advantages with vibratory plates.
Truck Loading. Loading trucks from
a bench is more productive and fuel
efficient as the return cycle is reduced
while the boom down function does
not require pump flow.
SmartBoom. Reduces stress and vibrations transmitted to the machine and provides a more
comfortable environment.
Hydraulics
Cat hydraulics deliver power and precise control to keep material moving.
Component Layout. The 329D hydraulic
system and component locations have
been designed to provide a high level
of system efficiency. The main pumps,
control valves and hydraulic tank
are located close together to allow
for shorter tubes and lines between
components, which reduce friction loss,
and pressure drops in the lines.
The layout further provides greater
operator comfort by placing the radiator
on the cab side of the upper structure.
This allows incoming air to enter the
engine compartment from the operator
side and hot air and corresponding
engine sound to exit on the opposite
side away from the operator.
This reduces engine compartment
heat and sound being transmitted to
the operator.
Heavy Lift Mode. Maximizing lifting per-
formance and boosting the lifting capability.
Heavy loads can be easily moved in the full
working range of the machine maintaining
excellent stability.
Hydraulic Cross Sensing System. The hydraulic
cross sensing system utilizes each of two
hydraulic pumps to 100%, under all operating
conditions. This improves productivity with
faster implement speeds and quicker, stronger
pivot turns.
Pilot System. The pilot pump is independent
from the main pumps and controls the front
linkage, swing and travel operations.
Boom and Stick Regeneration Circuit. Boom
and stick regeneration circuit saves energy
during boom-down and stick-in operation which
increases efficiency, reduces cycle times and
pressure loss for higher productivity, lower
operating costs and increased fuel efficiency.
Electronic Control System.
Ten hydraulic pump flow and pressure
settings can be preset, eliminating
the need to adjust the hydraulics each
time a tool is changed.
Auxiliary Valve. The auxiliary valve
is standard. Control circuits are
optional, allowing for operation of
high and medium pressure tools
such as shears, grapples, hammers,
pulverizers, etc.
Hydraulic Cylinder Snubbers.
Located at the rod-end of the boom
cylinders and both ends of the stick
cylinders to cushion shocks while
reducing sound levels and extending
component life.