GZD15, WSM
HYDRAULIC SYSTEM
4-M4
B
Mower Lift Cylinder "NEUTRAL"
1) Since the hydraulic lift pedal is not pushed, the
spool (2) is not pushed in and is not pulled out from the
control valve(1).
2) High-pressured oil is forced through "C" port to the
second and the third spool port in the control valve (1).
3) Oil passage between the spool (2) and the control
valve (1) is not formed. Hydraulic oil from the mower lift
cylinder is kept in delivery hose and in the control valve
(1).
4) While the control valve keeps "NEUTRAL"
position, mower does not lower down.
B
Mower Lift Cylinder "LIFT"
1) When the hydraulic lift pedal is pushed to the
"LIFT" position, the spool (2) is pushed into the control
valve (1).
2) Oil passage between the spool (2) and the control
valve (1) is formed. High-pressured oil delivered from
"P" port is forced through the orifice (3) of the spool (2)
to "A1" port.
3) Since the oil is forced through the mower delivery
hose to the mower lift cylinder, the mower is lifted up.
B
Mower Lift Cylinder "DOWN"
1) When the hydraulic lift pedal is pushed to the
"DOWN" position, the spool (2) is pushed out from the
control valve (1).
2) High-pressure oil delivered from the hydraulic
pump is forced to the second and the third spool ports.
3) Oil passage between the spool "A1" port side and
the control valve (1) is formed.
Oil in the mower lift cylinder is returned though "A1"
port and the spool orifice (3) to "T" port.
4) While the hydraulic lift pedal is pushed to the
"DOWN" position, the mower is lowering down with its
weight.
(1)
Control Valve
(2)
Spool
0000001569E
(1)
Control Valve
(3)
Orifice
(2)
Spool
0000001570E
(1)
Control Valve
(3)
Orifice
(2)
Spool
0000001571E
KiSC issued 04, 2006 A
Summary of Contents for GZD15
Page 1: ...GZD15 WORKSHOP MANUAL KiSC issued 04 2006 A ...
Page 7: ...GZD15 WSM SAFETY INSTRUCTIONS 5 KiSC issued 04 2006 A ...
Page 8: ...GZD15 WSM SAFETY INSTRUCTIONS 6 KiSC issued 04 2006 A ...
Page 9: ...GZD15 WSM SAFETY INSTRUCTIONS 7 0000001495E KiSC issued 04 2006 A ...
Page 12: ...GZD15 WSM DIMENSIONS 10 DIMENSIONS KiSC issued 04 2006 A ...
Page 13: ...GZD15 WSM DIMENSIONS 11 0000001694E KiSC issued 04 2006 A ...
Page 14: ...G GENERAL KiSC issued 04 2006 A ...
Page 72: ...1 ENGINE KiSC issued 04 2006 A ...
Page 140: ...2 TRANSAXLE KiSC issued 04 2006 A ...
Page 183: ...3 FRONT AXLE KiSC issued 04 2006 A ...
Page 184: ...CONTENTS 1 STRUCTURE 3 M1 KiSC issued 04 2006 A ...
Page 194: ...4 HYDRAULIC SYSTEM KiSC issued 04 2006 A ...
Page 223: ...5 ELECTRICAL SYSTEM KiSC issued 04 2006 A ...
Page 226: ...GZD15 WSM ELECTRICAL SYSYTEM 5 M2 0000001510E KiSC issued 04 2006 A ...
Page 227: ...GZD15 WSM ELECTRICAL SYSYTEM 5 M3 0000001511E KiSC issued 04 2006 A ...
Page 255: ...6 MOWER KiSC issued 04 2006 A ...
Page 256: ...CONTENTS 1 POWER TRANSMISSION 6 M1 2 LIFTING MECHANISM 6 M2 KiSC issued 04 2006 A ...