Tadano TM-2000-1, Service Manual

Page: 98 / 194

G - 2
Boom (Five-section boom)
23
W536-1040E
G - 2
13. Adjust the clearances for the sheaves (2) for
extending the 4th boom section.
Adjust the clearances to the following by
increasing or decreasing the number of plates that
are placed between the sheave and sheave pin.
- 0.6 mm (3/128 in) or less in total when the
values at right and left are added
Tightening torque of fixing bolts of sheave pin:
- 49.0 – 58.8N
・
m {36.1 – 43.3 ft
・
lbf}
[NOTICE]
After this adjustment, apply thread locker
(ThreeBond 1305) to bolts that are used for fixing
the sheave pins and tighten them.
14. Fix both ends of the wire ropes for extending the
4th boom section at the front end of the 4th boom
section with a wire etc.
[NOTICE]
Fix the wire ropes while pulling them to prevent
them from hanging down.
15. Measure the following internal widthwise
dimension of the 3rd boom section.
- At 1.0 to 1.4 m (3.3 to 4.5 ft)from the front end
[NOTICE]
The measured dimension will be used when the
clearances are adjusted at step 18.
16. Apply grease to the surfaces inside the 3rd boom
section on which the slide plates of the 4th boom
section slide.