Service Manual User Manual

Hydraulic System
9-27
Figure 9– 16. Boom hoist/lower hydraulic circuit schematic.
XX
HOIST/LOWER
SOLENOID VALVE
(Part of Pilot Select Manifold)
T
1
FWD.
BACK
3
A
B
a
b
4000
PSI
TANK
LOAD SENSE
OUT
INLET
HOIST/LOWER
SECTION
(Part of Main Control Valve Assy)
SPOOL
3500
PSI
65
PSI
250
PSI
INLET
25
PSI
3.0 IN
4
BYPASS TO TANK
RELIEF
VALVE
5 PSI
HOIST/LOWER CYLINDER
2500 RPM
32.5 GPM
P
2500
PSI
550
PSI
PPG
PB
.090
DIA
PSG
PS
P
PBG
T
650
PSI
UNLOADER VALVE
AUXILIARY FUNCTION MANIFOLD
0.5 PSI
P
P
JOYSTICK
MS0020
Model 3606 • Origin 10/99