Tadano TT-800XXL1, Service Manual

Page: 118 / 267

9
W536-0760E
G-2 G-2
Boom (Five-Section Boom)
[NOTICE]
Before loosening the nut, measure the length of the
wire rope protrusion (L3) as a guide for reassembly.
IW536-0620E 11
Nut
2nd boom section
Wire rope (for 4th boom section extension)
Support
L3
9. After removing the retainer on the top of the 2nd
boom section head and removing the slide plate,
pull out the 3rd boom section by approx.
1 m.
1 0. While lifting the 3rd boom section slightly, remove
the retainer from the bottom of the 2nd boom
section head.
11 . Lift and pull out the 3rd boom section using a
crane, and place it on a level platform.
2.3 Removing the 4th boom section
1 . Remove the nut for the wire rope (for 4th boom
section extension) located on the rear end of the
4th boom section, loosen the hexagon head bolt,
and remove the plate and support.
[NOTICE]
Before loosening the nut, measure the length of the
wire rope protrusion (L4) as a guide for reassembly.
IW536-0620E 1 2
4th boom section
Nut
Nut
Plate
Support
Support
Wire rope (for 4th boom section extension)
Hexagon
socket head bolt
L4
2. Lift up the rear end of the telescoping cylinder
slightly using a crane and pull out the connecting
pin that connects the 3rd boom section and the
No. 2 telescoping cylinder by removing the
retaining ring.
3. Lift up the telescoping cylinder using a crane and
pull it out rearward together with the wire rope for
4th boom section extension.
3rd boom section No.2 telescoping cylinder
Wire rope (for 4th boom section extension)
Connecting pin
IW536-0620E 1 3
4. After removing the retainer on the top of the 3rd
boom section head and removing the slide plate,
pull out the 4th boom section by approx.
1 m.
5. While lifting the 4th boom section slightly, remove
the retainer from the bottom of the 3rd boom
section head.
6. Lift and pull out the 4th boom section using a
crane, and place it on a level platform.
2.4 Removing the top boom section
1 . Remove the four bolts and detach the guide.
2. Remove support by loosening the bolts 2 (4
pieces) on both sides of the 4th boom section
head, draw out the wire rope forward by approx.
0.5 m, remove the retaining ring, detach the pin
and separate the wire rope from the support.