Western MVP PLUS Series User Manual

Lit. No. 27366, Rev. 01 February 15, 2008
57
STRIKING AN OBJECT WHILE PLOWING FORWARD – HYDRAULIC
SV08-2004 S3 ON
SV08-2004 S1
MOVEMENT
BLADE
RAISE LOWER SCOOPVEE
SF08-2015 S6
EXTEND
LEFT
S4SVCV08-20 ON ON
SVCV08-20 S2 ON
SV08-2004
SVCV08-20
SVCV08-20
SV08-2004
SVCV08-20
SF08-2015
S5
S8
S11
S9
S7
S10
ON
MOTOR M ONON
ON
ON
ON
ON
ON ON
ON
ONON
ONONON
ON
ON
ONON
ONON
ANGLE
RIGHT
ANGLE
LEFT
RIGHT
RETRACT
ON
ON
ON
ON
RIGHT
EXTEND
ON
ON
ON
LEFT
RETRACT
ON
ON
ON
ON
Relief Valve Settings
Pump
Ram, Base-End
Ram, Rod-End
2250 psi
3700 psi
4600 psi
FORCE APPLIED WHEN PLOWING FORWARD FORCE APPLIED WHEN PLOWING FORWARD
PRESSURE TEST PORT
DRAIN
QUILL
PUMP
RELIEF
VALVE
S10S5
S6
S4
S11
S8
S9
S3
S2
S1
RELIEF
VALVES
DS BASE
RELIEF
VALVES
PS BASE
CHECK
VALVE
DS BASE
RELIEF
VALVE
DS ROD
RELIEF
VALVE
PS ROD
CHECK
VALVE
PS BASE
CHECK
VALVE
DS ROD
CHECK
VALVE
PS ROD
DS
PS
LIFT
M
S7
SECONDARY BLOCK ASSEMBLY
PRIMARY BLOCK ASSEMBLY
System Response
1. Hydraulic fluid is trapped in the
base end of the passenger-side
(PS) ram by the inactivated S10
& S11 solenoid cartridge valves
and the PS base-end check
valve and relief valves.
2. Hydraulic fluid is trapped in the
base end of the driver-side (DS)
ram by the inactivated S6 & S7
solenoid cartridge valves and the
DS base-end check valve and
relief valves.
3. When the snowplow contacts an
object while plowing, force of the
impact increases hydraulic
pressure in the base end of the
ram. When pressure exceeds
4600 psi, the ram's base-end
relief valves open allowing
hydraulic fluid back to the
reservoir. The rod-end check
valve opens to allow fluid to fill
the rod end of the ram.
4. This allows the ram to collapse
and the wing to move rearward.

Western MVP PLUS Series Specifications

General

Brand	Western
Model	MVP PLUS Series
Category	Snow Blower
Language	English