10-21
DS35-W00 May. 2007
CLUTCHCLUTCH
CLUTCHCLUTCH
CLUTCH
TRANSMISSIONTRANSMISSION
TRANSMISSIONTRANSMISSION
TRANSMISSION
ENGINEENGINE
ENGINEENGINE
ENGINE
HSTHST
HSTHST
HST
FRONT AXLEFRONT AXLE
FRONT AXLEFRONT AXLE
FRONT AXLE
STEERINGSTEERING
STEERINGSTEERING
STEERING
BARKEBARKE
BARKEBARKE
BARKE
ELECTRICELECTRIC
ELECTRICELECTRIC
ELECTRIC
INDEXINDEX
INDEXINDEX
INDEX
HYDRAULICHYDRAULIC
HYDRAULICHYDRAULIC
HYDRAULIC
GENERALGENERAL
GENERALGENERAL
GENERAL
REAR AXLEREAR AXLE
REAR AXLEREAR AXLE
REAR AXLE
CK22/CK22H
C. LIFTING
Lifting:
When the control spool (1) is pushed up and starts to
open, the fluid drawn through the (b) port passes the
spool and then joins the fluid drawn through the (a)
port.
Meanwhile, the oil from the (a) port is supplied to the
top of the pilot valve (5) and the bottom of the regulator
(2) through the passage (c) and (d) as soon as the
control spool opens.
Consequently, the pilot valve (5) is lowered and the
drain passage (e) of the pilot valve closes. Then, the
regulator piston (2) is lifted and the drain passage (f)
on the bottom of the regulator piston is blocked.
As all the drain passages are blocked, the fluid passed
through the control spool from the (b) port joins the
fluid drawn through the (a) port. Then, as the fluid pres-
sure rises, it pushes up the check valve (3) and this
fluid is supplied to the hydraulic cylinder (4) to lift the
lifting arm.
T46WA31A
4
3
a
c
d
5
f
2
e
b
1
HYDRAULIC SYSTME - OPERATING PRINCIPLE
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