Danfoss MCV108C Installation guide
MCV108C
Hydraulic Displacement Control-PV
BLN-95-8994-3 |
Issued: August 1999 |
DESCRIPTION
TheMCV108CVariablePumpHydraulicDisplacementControl is a single stage hydraulic pump stroke control using mechanical feedback to establish closed loop swashplate anglecontrolofDanfoss46ccmediumdutypumps.
TheMCV108Cusesadifferentialhydraulicinputpressureto drive its piston and rotary valve arrangement and port oil to the pump servo cylinders. The rotary 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 • Minimum long term shift. deadband: offers safety combined with accurate and re-
sponsive control. |
• Configured to accept most hydraulic input signals. |
• Withstands rugged environmental testing. |
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ORDERING INFORMATION |
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OrderyourHDC-PVbychoosingtheinputpressurefromthe |
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INPUT PRESSURE RANGE |
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DESCRIPTION |
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control source using the information in Table A. |
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19-170 psid nominal |
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TABLE A. INFORMATION NECESSARY TO SPECIFY |
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44-200 psid nominal |
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THE HDC-PV. |
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15 |
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70-220 psid nominal |
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MCV108C30 |
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Order MCV108s factory installed on pumps from |
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Danfoss Ames, Iowa or as a separate component from |
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STANDARD CASTING |
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Danfoss Minneapolis, Minnesota. |
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PRESSURE RANGE |
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SPARE PARTS |
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MCV108C replaces MCV108A and MCV108B. |
Danfoss provides spare parts for the MCV108C. |
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See the Spare Parts drawing. |
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TECHNICAL DATA |
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OPERATING CHARGE PRESSURE |
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FLUID TEMPERATURE |
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150-500 PSI above case pressure |
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The valve will be functional and undamaged at oil |
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OIL VISCOSITY |
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temperatures of -40° to 121 ° C (-40 ° to 250 ° F). |
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The valve will meet performance specifications with a |
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40-6000 SSU |
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fluid temperature of 21° to 82 ° C (70 ° to 180 ° F). |
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FILTRATION |
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FLUID |
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Thesystemhydraulicswillhaveafiltrationratingofbeta |
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Automatic transmission fluid or hydraulic oil such as |
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sub 10 = 2 or better. |
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Mobil DTE 24 or equivalent. |
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© Danfoss, 2013-09 |
BLN-95-8994-3 |
1 |
TECHNICAL DATA (continued)
THRESHOLD |
SENSITIVITY |
19± 7 psi/side (38± 14 psi total) (Model 01) |
A1%ofmodulatingrangechangeininputdeltapressure |
44± 14 psi/side (88± 28 psi total) (Model 04) |
will cause a detectable output change. |
70± 10 psi/side (140± 20 psi total) (Model 05) |
MAXIMUM HYSTERESIS |
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RATED MODULATING PRESSURE |
25 psi when cycled at .01 Hz |
170± 16 psi (Model 01) |
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200± 20 psi (Model 04) |
NEUTRAL LEAKAGE |
220± 20 psi (Model 05) |
.10 gpm maximum across the valve with oil of 145-160 |
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SUS at 100° F. |
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SPARE PARTS |
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I T E M |
P A R T |
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N U M B E R |
N U M B E R |
Q T Y |
D E S C R I P T I O N |
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1 |
K13340 |
1 |
LINK COVER |
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2 |
K13341 |
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COVER GASKET |
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3 |
K07006 |
2 |
O-RING (.49 I.D. X .07) |
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4 |
9004101-1190 |
1 |
O-RING (.93 I.D. X .103) |
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5 |
K07057 |
2 |
SOC. HD CAP SCREW (1/4-20 X 5/8) |
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6 |
K11615 |
1 |
HEX NUT (5/16 - 24) |
1452B |
7 |
K10057 |
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SOCKET SET SCREW (5/16 - 24 X .875) |
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8 |
K08131 |
1 |
NULL ADJUST GASKET |
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9 |
K00944 |
1 |
NULL ADJUST COVER |
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10 |
K09305 |
4 |
SOC. HD CAP SCREW (10 - 32 X .31) |
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11 |
K08388 |
1 |
SEAL WASHER |
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12 |
9009625-0163 |
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WASHER * |
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13 |
K22539 |
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SLEEVE WITH SNAP RING |
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** |
KK05602 |
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MOUNTING HARDWARE BAG ASSY |
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KK05601 |
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MOUNTING HARDWARE BAG ASSY |
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* Purchase from Danfoss Ames, Iowa
**Bag assembly includes items 4, 13 and mounting screws
***Bag assembly for MCV108A and MCV108B
BLN-95-8994-3 |
2 |
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