Hydraulic Circuit - Kubota GZD15 Workshop Manual

GZD15, WSM

1. HYDRAULIC CIRCUIT

(1) PTO Clutch
(2) PTO Clutch Valve
(3) Hydraulic Control Valve
Assembly
(4) Grass Collector Lift
Cylinder (RH)
The hydraulic system of this machine is composed of a hydraulic pump (17), control valve assembly (3), grass
collector lift cylinder (4), (5) and other components.
This system has the following functions.
Oil is supplied by hydraulic pump (17) which is driven by engine.
Power from the input shaft (pump shaft) is distributed right and left with the bevel gears and drives each hydrostatic
transmission (15), (16).
Moreover, oil from the hydraulic pump (17) is sent to the transmission centre case through the control valve. On
the other hand, oil is regulated with the regulator valve (13) to constant pressure and sent to the hydrostatic
transmission (15), (16) and PTO clutch (1).
(5) Grass Collector Lift
Cylinder (LH)
(6) Grass Collector Dump
Cylinder
(7) Grass Collector Lifting
Control Valve
4-M1
(8) Grass Collector Dumping
Control Valve
(9) Mower Lifting Control Valve
(10) Check Valve
(11) Relief Valve
(12) Mower Lift Cylinder
HYDRAULIC SYSTEM
(13) Regulator Valve
(14) Oil Filter
(15) HST (LH)
(16) HST (RH)
(17) Hydraulic Pump
(18) Oil Strainer
0000001566E
KiSC issued 04, 2006 A