Part No. 1268494
S-100 • S-105 • S-120 • S-125
3 - 87
March 2017
Section 3 • Repair Procedures
MANIFOLDS
10-5
Function Manifold Components, S-120 and S-125 Models
(to serial number 430)
The function manifold is mounted to the turntable next to the ground controls.
Index
Schematic
No.
Description
Item
Function
Torque
1
Relief valve, 1800 psi / 124.1 bar ........BA ..........
Boom extend pressure limit
...............18-20 ft-lbs / 24-27 Nm
2
Proportional solenoid valve ................ BB ..........
Boom extend/retract
proportional speed control .................
33-37 ft-lbs / 45-50 Nm
3
Solenoid valve, 3 position 4 way
........
BC
..........Turntable rotate left/right ...................
25-27 ft-lbs / 34-37 Nm
4
DO3 valve, 3 position 4 way
............... BD ..........Boom up/down .......................................
30-35 in-lbs / 3-4 Nm
5
Priority flow regulator valve,
0.1 gpm / 0.38 L/min
.......................... BE ..........Bleeds off differential
sensing valves to tank .......................18-20 ft-lbs / 24-27 Nm
6
Proportional solenoid valve ................ BF ..........Boom up/down proportional
speed control .....................................
33-37 ft-lbs / 45-50 Nm
7
Proportional solenoid valve ................ BG ..........Turntable rotate proportional
speed control .....................................18-20 ft-lbs / 24-27 Nm
8
Counterbalance valve,
3200 psi / 220.6 bar
........................... BH ..........Boom down circuit .............................
30-35 ft-lbs / 38-41 Nm
9
Relief valve, 2600 psi / 179.3 bar
....... BI ...........Turntable rotate, boom lift and
boom retract pressure limit ................
25-27 ft-lbs / 34-37 Nm
10
Check valve
........................................ BJ ...........Load sensing circuit,
boom up/down ...................................12-14 ft-lbs / 16-19 Nm
11
Orifice - plug,
0.040 inch / 1.02 mm...........................
BK
..........Differential sensing dampening
This list continues. Please turn the page.
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