Sinoboom GTJZ0612E, Maintenance Manual

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© Jul.2020 5-6 GTJZ0612E&0812E&1012E&1212E Maintenance Manual
MAINTENANCE PROCEDURES
1. Open the right door of the chassis and locate the
hydraulic valve block.
2. Disconnect and plug the hoses and fittings on the
valve block, and tag the machine.
3. Remove the screws installed at the bottom of the
valve block.
4. Remove the valve block.
Installing the Cartridge Valve
NOTICE
When installing the removed hose and fitting, it must
be tightened according to the specified torque. See
Hydraulic Hose and Fitting Specifications, page
1-9
.
1. Immerse the valve into clean oil and lubricate the O-
ring.
2. Screw in the cartridge valve by hand until the O-ring
contacts the valve block. Tighten as per the speci-
fied torque.
3. Install the solenoid coil of the valve on the valve
rod. Properly install the coil nut and tighten as per
the specified torque if necessary.
Figure 5-7
Table 5-1
No
Description
Function
Tightening Torque
1
Pressure port Measuring pressure 40 Nm (30 ft-lb)
2
2-position 4-way solenoid valve Platform lifting 34 Nm (25 ft-lb)
3
3-position 4-way solenoid valve Left/right steering 34 Nm (25 ft-lb)
4
Lifting overflow valve Lifting overflow 27 Nm (20 ft-lb)
5
Steering overflow valve Steering overflow 24 Nm (18 ft-lb)
旧底图总号
日 期
签 字
校 描
描 图
借通用件登记
1 2
A
B
1
2
3
4
5