Milton CAT 938H - Manual (Page 8)

• Hydraulics are easy to control with
low effort
• Differential locks provide maximum
traction in varying underfoot
conditions
• Constant net horsepower across
various applications
• Standard and optional features that
maximize productivity
LOAD SENSING HYDRAULICS. The 938H
features a load sensing hydraulic system
that supplies flow and pressure for the
implements only upon demand, and only
in the amounts necessary to perform the
needed work thus providing a more
efficient loader.
With the new S3PC Priority Proportional
Pressure Compensation Valve, implement
control is improved over the previous
system – raise/lower and rack back/dump
can be operated simultaneously.
Operators will notice enhanced ease
of operation, more rimpull into the pile
and a 16% increase in lift force.
NEW! DIFFERENTIAL LOCK. Maximize
productivity with the new hydraulic
locking front differential. This standard
feature provides operators with the
confidence to maneuver through poor
underfoot conditions with ‘on the fly’
engagement.
A Caterpillar exclusive, the optional
automatic front/rear locking differential
collects input from sensors throughout
the loader and adapts tractive effort
to meet operating requirements.
CONSTANT NET HORSEPOWER.
On many competitive machines, gross
horsepower is constant, meaning that
net engine power available for actual
work will vary based on demands made
from parasitic sources, such as air
conditioning or cooling fans.
The Cat C6.6 engine is electronically
configured to provide constant net
horsepower at full parasitic load
enhancing productivity and improving
fuel efficiency.
On-Demand Fan. With electronic control
of the variable speed on-demand fan,
temperature levels of the engine coolant,
transmission oil, hydraulic oil and air
inlet manifold are constantly monitored.
This data is used to control and maintain
fan speed at the level necessary to
maintain normal system temperatures.
Controlled fan speed improves fuel
efficiency, lowers noise levels and
reduces radiator plugging.
Isolated Cooling System. The 938H
cooling system is isolated from the
engine compartment by a non-metallic
shield. The hydraulically driven, variable
speed fan draws in clean air from the
rear of the machine and exhausts it out
the sides and top of the hood. The end
results are optimal cooling efficiency,
increased fuel efficiency, less radiator
plugging and reduced operator sound
levels.
COUNTERSHAFT POWERSHIFT
TRANSMISSION. The electronic
countershaft powershift transmission
with automatic shift capability is
designed and built by Caterpillar.
The very responsive, full-power speed
and directional changes provide excellent
cycle times and productivity.
Fuel Economy Mode. Match transmission
shifting patterns to machine application
requirements. The Fuel Economy Mode
(within Messenger) provides operators
with the ability to choose between three
different shift modes in order to maximize
shift quality and fuel efficiency.
RIDE CONTROL. The optional Ride
Control System improves ride,
performance and load retention when
traveling over rough terrain. Operators
gain confidence moving at higher
speeds in load and carry operations
decreasing cycle times and increasing
productivity.
AUTOLUBE. The optional Caterpillar
Autolube System provides precise,
automatic lubrication of pins and
bushings – during loader operation.
Automatic lubrication reduces time spent
on daily maintenance and downtime for
unplanned repairs due to inadequate
greasing – improving productivity.
8
PRODUCTIVITY
Work Smart and Move More