DECKMASTER
MCV 106AXXXX
Hydraulic Displacement
Control-PV
BULLETIN 95-8972
APPLICATION
The MCV106A Hydraulic Displacement Control (HDC) is
a cost-effective hydraulic pump stroke control which
uses mechanical feedback to establish closed-loop
control of the swashplate angle of Sundstrand Series 2X
and Series 3X pumps.
The HDC accepts a differential hydraulic pressure signal
from a control handle or servovalve and uses the
differential
pressure
to
drive
its
double
spool
arrangement and port oil to the pump servocylinders.
The spool configuration allows a null deadband for
machine safety in the pump's output while maintaining
optimum dynamic response to control commands.
FEATURES
• Servo control deadband independent of signal null
deadband: offers safety combined with accurate and
responsive control
• Resistant to the environment: shock, vibration and
humidity tested
• High porting spool force resists chip plugging
• Swashplate movement can be visually detected at the
feedback shaft
* Low cost
SPECIFICATIONS
HYDRAULIC
OIL VISCOSITY
40-6000 SSU
OIL TEMPERATURE
-40° to 121° C (-40° to 250° F) operating range
21° to 82° C(70" to 180° F) rated performance range-
2X Series
21° to 104" C (70° to 220° F) rated performance
range-3X Series
MINIMUM SYSTEM FILTRATION
10 Microdh
ENVIRONMENTAL
SHOCK
50 g for 11 milliseconds. Three shocks in both
directions of the three mutually perpendicular axes
for a total of 18 shocks.
VIBRATION
Withstands a vibration test designed for mobile
equipment controls consisting of two parts:
1.
Cycling from 5 to 2000 Hz in each of the three
axes.
2.
Resonance dwell for one million cycles for each
resonance point in each of the three axes.
Subject to acceleration levels of 1 g to 46 g.
Acceleration level varies with frequency.
PERFORMANCE
MODULATING RANGE
148 psid (MCV106AXX01)
430 paid (MCV106AXX02)
218 paid (MCV106AXX03)
MAXIMUM HYSTERESIS
.4% of modulating range when cycled at .01 Hz
THRESHOLD PRESSURE
12 psid (MCV106AXX01)
120 psid (MCV106AXX02)
217 psid (MCV106AXX03)
