Zoomlion ZT20J, Service And Maintenance Manual

Page: 60 / 113

5-1
SECTION 5 BOOM AND PLATFORM
5.1 Platform and Jib
5.1.1 Load cell
5.1.1.1 Disassembly
Figure 5-1 Load cell disassembly diagram
a. Disconnect the wiring harness at the platform's electrical control box and load cell, disconnect the
tubing at the platform valve, collect the hydraulic oil in the pipeline with a suitable container, block
the port of the pipeline after the collection, and Make a mark.
After the hydraulic line is disconnected, the port of the pipeline should be blocked immediately to
prevent dust and other pollutants from entering the hydraulic system.
b. Remove the connecting bolts 1, 6 of the bracket and the platform component, and use a suitable
lifting device to remove the platform component from the bracket.
c. Remove the connecting bolts 4 and 5 of the swing cylinder and the transition base, and use
appropriate lifting equipment to remove the bracket and the transition base from the swing cylinder;
d. Remove the bolt 3 at the protective hook and remove the protective hook.
e. Remove the connecting bolt 7 between the pressure plate, the bracket and the transition base, and
then the pressure plate can be removed.
f. The load cell can be removed by removing the connection bolt 2 between the load cell and the bracket
and the transition seat.
5.1.1.2 Inspection
Rotary
Transit Platform
Protec Load cell Pressing Tray
3
2
1 1
4 5
6
7