Milton CAT 525C - Manual (Page 5)

Five-Speed Transmission. The field
proven Cat power shift countershaft
transmission easily matches engine
power to the load size and ground
conditions. Electronic control makes
fingertip controls possible, reducing
operator fatigue and improving comfort.
Gear Application. Gear ratios are
carefully designed to maximize
productivity in specific cycle segments
and under specific loads.
• Gear 1 provides highest rimpull
capability for heavy load
applications.
• Gears 2, 3 for normal loads and
higher speed operations.
• Gears 4, 5 provide excellent empty
return and roading speeds.
Electronic Clutch Pressure Control.
The C-Series Skidders have an
additional transmission feature for
added performance and operator comfort
– the Electronic Clutch Pressure Control
(ECPC). This unique feature provides
smoother shifting and increases skidding
performance by regulating and modulating
the individual clutches based on current
operating conditions.
Torque Converter. The large, heavy-
duty torque converter maximizes the
productivity of the entire drive train.
The torque converter is matched to the
Cat C7 engine for excellent rimpull and
skidding performance. This lock-up
torque converter has proven its
durability over thousands of hours
of punishing loads.
Improved Productivity. The torque
multiplication capability of the torque
converter reduces the need for the
operator to continually shift the
transmission to maintain good skidder
performance, as is required on
competitive skidders. This reduces
operator effort and improves machine
productivity.
Lock-up Clutch. The integral lock-up
clutch allows the machine to operate in
converter drive for greater rimpull, or
direct drive for high efficiency hauling
and faster travel speeds. Direct drive
capability allows up to 15% higher
travel speeds when the lock-up clutch
is engaged.
Auto Lock-up. The lock-up clutch
automatically engages according
to ground speed and engine speed
conditions. This feature is handled
electronically and allows for increased
travel speeds in the same gear.
Reduced Operating Costs. Torque
converter direct drive capability,
combined with the lock-up differential,
reduces wheel slip. This minimizes
rutting and soil damage in straight-
ahead pulls on weaker soil. In turn, it
minimizes tire wear, component stress
and fuel consumption, reducing total
operating costs.
Differential Locks. Normal operation is
with the differential locks in both axles
disengaged, meaning the all four wheels
are free to drive independently. Locking
a differential forces both wheels on an
axle to turn in sync with each other.
Both front and rear differential locks are
easily engaged and disengaged with a
conveniently located switch on the right
hand console. Hydraulically actuated
differential locks allow for on-the-go
engagement or disengagement.
Axles. Axles feature a full length oil sump
with splash lubrication for excellent
heat rejection and long component life.
The 525C is available with two axle
options – Standard Duty axles are used
for most applications and tire sizes up
to 30.5
ן 32. A Wide Axle option is
available for use in moderate to severe
applications, or when using dual tires,
wide flotation tires or chains.
Front Axle. The front axle features a
pinion-mounted design and a heavy-duty
housing, eliminating the need for the
front axle guard.
Pivot Design. The oscillation pivot design
provides industry leading ride comfort.
• 15° oscillation absorbs minor shock
loads caused by stumps and holes
and helps isolate the cab from axle
movement for a smoother, more
comfortable ride.
• Front axle oscillation also provides
excellent fore-aft stability for large
capacity grapples and dual function
arches.
Brake Components. Brake components
are housed inside the axles, protecting
them from dirt, dust and wet ground
conditions. Inboard brakes allow for
splash lubrication and cooling. They are
virtually maintenance free, and provide
reliable brake performance in the most
demanding logging applications.
5
Power Train
The integrated Cat power train delivers dependable, relentless pulling power.
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