4-19
[CHECKING BOOM TELESCOPING WIRE ROPE]
Prompt adjustment is required if the following event appears in the
boom extending wire rope.
1. Retract the boom completely.
2. Remove three mounting bolts (1) at the boom end and remove
the cover (2).
3. Remove lock bolt (6) at the boom telescoping cylinder top, and
turn adjustment bolt (9) of the boom extending wire clockwise.
The boom extending wire rope (8) is adjusted to the correct
tension if boom No.5 extends upon rotating the adjusting bolt (9).
If boom No.5 remains retracted, perform proper adjustment
according to “Adjustment of boom telescoping wire rope”.
4. Check that 5mm clearance is formed between booms No.4 and
No.5, clearance (a) shown at right, with the booms retracted in a
horizontal position.
If check finds clearance of 5mm or more, perform proper
adjustment according to “Adjustment of boom telescoping wire
rope”.
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