Milton CAT RM 500 - Manual (Page 13)

13 RM-500 specifications
Propel System
All-wheel drive is standard to provide
full-time four-wheel drive for increased
tractive effort.
Features
■ Front wheels are hydrostatically
driven by two dual displacement
piston-type motors. A separate
variable displacement, piston-type
pump with electronic displacement
control supplies pressurized flow.
Planetary gear reduction on each
front wheel end.
■ Rear wheels are hydrostatically
driven by two dual displacement
piston-type motors. A separate
variable displacement, piston-type
pump with electronic displacement
control supplies pressurized flow.
Planetary gear reduction on each rear
wheel end.
■ Drive motors have two swashplate
positions allowing operation at either
maximum torque for work or greater
speed for moving around the job site.
■ Gear selection controlled electrically
by a two-position switch on the
operator’s console.
■ Infinitely variable machine speed and
direction of travel controlled by
propel lever.
■ Speed control dial allows the operator
to set the maximum working speed so
that when the propel lever is placed in
the full forward position, the machine
will return to the pre-set speed.
■ Load sensing system, controlled by
Electronic Control Module (ECM),
matches propel speed to load on the
engine.
■ Each propel system includes a
separate flow divider control valve to
provide equal traction to each drive
motor. Operator can activate by a
switch on the front control console.
Max. speeds (forward and reverse):
Working 3.2 km/h - 2.0 mph
Roading 9.2 km/h - 5.7 mph
Rotor Drive System
Operates direct through a Caterpillar
three-speed, powershift transmission.
Features
■ Choice of three rotor speeds permits
working in a wide range of materials,
depths and applications.
■ Three-position switch determines
rotor speed. Speed selection can be
changed during operation.
■ ON/OFF switch controls clutch pack
engagement in transmission. Disc-
type brake on rotor driveline activates
when switch is in the OFF position.
■ Single strand, high strength rotor
drive chains on both sides are
contained in heavy-duty chain cases
partially filled with oil.
■ Shear disc or optional torque limiter
protect rotor drive components.
Rotor Speeds (@ 2000 engine rpm):
First 110 rpm
Second 152 rpm
Third 205 rpm
Rotor Depth Control
Rotor height and depth is electronic
over hydraulic control. ECM controls
two double-acting hydraulic cylinders
on sides of mixing chamber. Actual
rotor height and depth are displayed on
the electronic control panel.
Features
■ Three-position mode switch allows
rotor depth to be controlled manually or
automatically.
■ MANUAL mode controls depth using
the raise/lower switch. Visual depth
gauges are easily seen from
operator’s station.
■ AUTOMATIC mode automatically
controls rotor depth to a preset cutting
depth. Setting cutting depth is easily
accomplished first in manual mode by
a switch on the operator’s console.
■ TRAVEL mode selection automatically
raises rotor and hood to a preset travel
height.
Brakes
Primary Brake Features
■ Closed-loop hydrostatic drive
provides dynamic braking during
normal operation.
Parking Brake Features
■ Spring-applied/hydraulically released
multiple disc type brake mounted on
each gear reducer. Secondary brakes
are activated by a button on the
operator’s console, loss of hydraulic
pressure in the brake circuit or when
the engine is shut down.
■ Propel pumps are destroked when
parking brake is engaged. Propel
lever must be returned to neutral after
brake is released before machine will
propel.
Steering
A hydraulic power-assist, steering
system provides four steering modes:
front steer only, crab steer, coordinated
and rear steer only.
Features
■ Two double-acting steering cylinders
control the front wheels and are
powered by a pressure-compensated,
piston-type pump. Two double-acting
steering cylinder are attached to the
rear bolster. Constant pressure is
assured in the steering system.
■ Switch on operator’s side console
provides rear wheel steering mode.
Steering Modes
■ Front steer only—controlled by a
hand metering unit, maintained by
closed-loop control. The ECM
automatically aligns rear wheels to the
center position for straight tracking.
■ Rear steer—controlled by a toggle
switch, maintained by closed-loop
control.
■ Crab—front and rear wheels turn
simultaneously in the same direction.
■ Coordinated—front and rear wheels
turn simultaneously in the opposite
direction.
■ Switch on operator’s side console
provides four steering modes.
Turning Radius (minimum):
Inside 3.7 m (12' 1")