Sinoboom AB14EJ - Page 74

© May 2023 62 GTZZ14EJ&16EJ Maintenance Manual
HYDRAULIC SYSTEM
Table 7-2 Boom function manifold (PN.202040003489)(Continued)
No. Name
Torque
Function
valve
difference and flow
2
Damper 5Nm (3.7ft-lb)
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3
Switching
solenoid valve
30Nm (22ft-lb) Control the speed of turntable rotating
4–1 Solenoid valve
30Nm (22ft-lb) Control the direction of turntable rotating
4–2 Solenoid valve
30Nm (22ft-lb) Control the direction of steering while traveling
5–1 Overflow valve
40–45Nm (30-33ft-lb) Control the pressure for turntable rotating
5–2 Overflow valve
40–45Nm (30-33ft-lb) Control the pressure for turntable rotating
5–3 Overflow valve
40–45Nm (30-33ft-lb) Control the pressure for steering while traveling
5–4
Overflow valve
40–45Nm (30-33ft-lb) Control the pressure for steering while traveling
5–5
Overflow valve
40–45Nm (30-33ft-lb) Control the pressure of hydraulic system
5–6 Overflow valve
40–45Nm (30-33ft-lb)
Control the pressure for main boom lowering in
emergency
5–7
Overflow valve
40–45Nm (30-33ft-lb) Control the pressure for articulated boom lowering
6–1 Solenoid valve
35–40Nm (26–30ft-lb) Control the direction of main boom elevating
6–2 Solenoid valve
35–40Nm (26–30ft-lb) Control the direction of main boom retracting
7–1 Solenoid valve
30Nm (22ft-lb) Control the direction of platform leveling
7–2 Solenoid valve
30Nm (22ft-lb) Control the direction of platform rotating
7–3 Solenoid valve
30Nm (22ft-lb) Control the direction of jib boom lifting/lowering
8
Hydraulic lock 43–47Nm (32–35ft-lb)
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9 Coil
4Nm (3ft-lb)
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10 Solenoid valve
27Nm (20ft-lb) Control the direction of articulated boom luffing
11
Manual
directional valve
37–40Nm (27–33ft-lb) Change emergency movements
12
Manual pump
valve
37–40Nm (27–33ft-lb) Emergency power unit
13
Damper 5Nm (3.7ft-lb)
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14
Damper 5Nm (3.7ft-lb)
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15 Solenoid valve
30Nm (22ft-lb) Control the main boom lowering in emergency
16
Switching
solenoid valve
30Nm (22ft-lb)
Enable the lifting of main boom, the lifting/lowering
of articulated boom and the lifting/lowering of jib
boom
17 Coil
4Nm (3ft-lb)
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18
Joystick
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19 Coil
4Nm (3ft-lb)
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20 Check valve
40–45Nm (30-33ft-lb) Keep oil flowing in one direction
21
Damper 5Nm (3.7ft-lb)
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