SkyTrak 6036 Service Manual - Manual (Page 134)

Section 9. Hydraulic System
9-21 Model 6036 S/N 9B0499 and Before
Center Position
When the auxiliary control lever is placed in the
center or neutral position, the directional control
valve spool is positioned so that supply pressure is
applied through ports F to C, Fig. 9.8, to the return
filter and reservoir. If the filter becomes clogged,
hydraulic oil will bypass the filter when the pres-
sure reaches 10 to 15 psi
(0,7 to 1,03 bar).
Forward Position
When the auxiliary control lever is placed in the
forward position, the directional control valve spool
is positioned so that pump applied pressure is
directed through ports E to A, Fig. 9.8, to the
female auxiliary quick connect coupler. Return
pressure is directed through ports B to D to the
return filter and reservoir. If the filter becomes
clogged, hydraulic oil will bypass the filter when
the pressure reaches 10 to 15 psi (0,7 to 1,03
bar).
FEMALE
MALE
TO AUXILIARY
ATTACHMENTS
MAIN CONTROL
VALVE
DIRECTIONAL CONTROL VALVE
POSITIONS
RESERVOIR TANDEM
PUMP
RETURN
FILTER
STRAINER 30
GPM
15
GPM
A B C A B C A B C
FORWARD
D E F D E F D E F
CENTER
Fig. 9.8 Optional Auxiliary Circuit
TO FRAME TILT
CYLINDER
TO GRILLE TILT AND
SLAVE CYLINDERS
TO BOOM EXTEND/
RETRACT CYLINDER
TO BOOM HOIST
CYLINDERS
BACKWARD
FORWARD
BACKWARD
0-4000 psi
PRESSURE
GAUGE
MA0491