Table of Contents
Advertisement
Service and Repair Manual
Manifolds
8-1
Function Manifold Components – View 1
The function manifold is mounted next to the hydraulic tank on the ground control side of the machine.
Index
Description
No.
Solenoid operated 2 position 2 way
1
directional valve
2
Orifice, 0.025 in / 0.635 mm
3
Orifice, 0.025 in / 0.635 mm
Solenoid operated 2 position 2 way
4
directional valve
5
Differential sensing valve, 150 psi / 10.3 bar
Proportional solenoid operated 2 position
6
2 way directional valve normally closed
Solenoid operated 3 position 4 way
7
directional valve
Solenoid operated 3 position 4 way
8
directional valve
Proportional solenoid operated 2 position
9
2 way directional valve normally closed
Proportional solenoid operated 2 position
10
2 way directional valve normally closed
11
Check valve, 5 psi / 0.34 bar
12
Check valve, 5 psi / 0.34 bar
13
Check valve, 5 psi / 0.34 bar
14
Check valve, 5 psi / 0.34 bar
102
Schematic
Item
T
Primary boom cylinder retract
X
Z
U
Secondary boom cylinder extend
Primary boom extend/retract
circuit, regulates pressure drop
I
across secondary boom
extend/retract proportional valve
Primary boom extend/retract,
J
proportional speed control
W
Primary boom extend/retract
X
Primary boom lift/ cylinder up/down
Primary lift cylinder up/down high
L
speed control
Primary lift cylinder up/down low
K
speed control
Prevents the draining of hydraulic
V
oil from the jib manifold and
platform manifold
A
Pressure Circuit #2
B
Pressure Circuit #1
Prevents hydraulic pressure from
D
flowing back into auxiliary pump #2
SX-180
December 2018
Function
25.7-28.5 Nm
25.7-28.5 Nm
25.7-28.5 Nm
25.7-28.5 Nm
25.7-28.5 Nm
25.7-28.5 Nm
Part No. 1268497
Torque
33-37 ft-lbs /
45-50 Nm
33-37 ft-lbs /
45-50 Nm
33-37 ft-lbs /
45-50 Nm
33-37 ft-lbs /
45-50 Nm
19-21 ft-lbs /
33-37 ft-lbs /
45-50 Nm
33-37 ft-lbs /
45-50 Nm
19-21 ft-lbs /
19-21 ft-lbs /
19-21 ft-lbs /
19-21 ft-lbs /
19-21 ft-lbs /
Advertisement
Table of Contents
