Zoomlion ZT20J, Service And Maintenance Manual

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5-15
Figure 5-15 Disassembly of the pin of the telescopic cylinder
k. Remove the bolt 9 and remove the limit block.
l. Remove the bolt 10 and the stopper pin, and pull out the pin shaft with a suitable tool.
Figure 5-16 Disassembly of the pin of the telescopic cylinder
m. Use suitable lifting equipment to support the piston rod seat, and slowly and carefully lift the
telescopic cylinder up until the cylinder pin leaves the pin slot.
n. With the support of the lifting equipment, slowly and carefully move the telescopic cylinder out
towards the tail of the boom.
o. Use lifting equipment to support the two ends of the telescopic oil cylinder, and slowly move the
telescopic oil cylinder to a suitable support frame.
Extrusion hazard.
If the lifting equipment fails to reliably support the telescopic oil cylinder, the telescopic oil cylinder may
fall when disassembling the telescopic oil cylinder, resulting in personal injury and equipment damage.
When disassembling, keep personnel away from the area near the telescopic cylinder.
5.2.6.2 Inspection
a. Inspect the shaft pin for wear, scratches, taper, ovality or other damage and replace the pin if
necessary.
螺栓9 限位块
螺栓10 止动销 销轴
活塞杆座
缸筒销
Bolt 9
Bolt 10 stop pin Pin
Limit
Piston
rod seat
Cylinder