Tadano TT-800XXL1, Service Manual

Page: 117 / 267

8
W536-0760E
G-2 G-2
Boom (Five-Section Boom)
2.2 Removing the 3rd boom section
1 Remove the wire rope for top boom section
extension/4th boom section retraction located on
the top of the 2nd boom head by loosening the
nut.
[NOTICE]
Before loosening the nut, measure the length of the
wire rope protrusion (L 1 ) as a guide for reassembly.
L 1
IW536-0620E06
Wire rope
Nut
2. Remove the wire rope for top boom section
located on the top of the 2nd boom head by
loosening the nut.
[NOTICE]
Before loosening the nut, measure the length of the
wire rope protrusion (L2) as a guide for reassembly.
3. Remove the adjuster assy from the 2nd boom
section by loosening the bolt.
IW536-0620E07
L2
Nut Bolt Adjuster assy 2nd boom section
Wire rope (for top boom section retraction)
4. Remove the supports (on both sides of the rear
end of the 3rd boom section) by loosening the bolt
1 , and remove the pin and sheave assy by
loosening the nut.
5. Remove the pin from the rear end of the top boom
section by loosening the bolt 2 and remove the
wire ropes for top boom section retraction (2
pieces).
IW536-0620E08
Bolt 1
Pin 1
Pin 2
Sheave assy
Bolt 2
Support
Nut
Wire rope (for top boom section retraction)
Top boom section
3rd boom section
6. Remove the support assy of the No. 1 telescoping
cylinder located at the rear end of the 3rd boom
section by loosening the hexagon socket head
bolt.
IW536-0620E09
Hexagon socket head bolt
Support assy
No. 1 telescoping cylinder
7. After removing the retaining ring, remove the pin
that secures the No. 1 telescoping cylinder and
No. 2 telescoping cylinder to the 2nd boom
section. Then loosen the nut and remove the bolt.
8. Remove the nut for the wire rope (for 4th boom
section extension) located on the rear end of the
2nd boom section, then loosen the bolt and
remove the support.