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[ADJUSTMENT OF BOOM TELESCOPING WIRE ROPE]
CAUTION
When adjusting each wire rope, be careful of overtension of the wire ropes.
One boom extending wire rope and one retracting wire rope are used in this machine.
Adjustment of these two wire ropes must conform to the specified procedure. Be sure to follow
the following adjustment procedure.
1. With the booms fully retracted in a horizontal position, extend the telescoping booms for
approx. 2 m.
2. Retract the booms slowly and completely.
Measure the clearance (a) in this condition to check the
following for proper adjustment.
• If the clearance (a) is 5 mm or more, adjust the No.5
boom retracting wire rope (5).
• If the clearance (a) is “0 (zero)”, adjust according to
step 5 “Adjustment of No.5 boom extending wire
rope (8)”.
3. Remove the mounting bolts (1) (3 bolts) on the boom tip
and then remove the cover (2).
When it sags, refer to the section, “Adjustment of Wire
Rope”.
4. Adjustment of No.5 boom retracting wire rope (5)
(1) With the lock nut (3) loose, tighten the right and
left adjusting nuts (4) evenly in a direction where
the retracting wire rope (5) becomes tight
(clockwise) until the clearance (a) is closed.
(2) If the clearance (a) is 5 mm or more, or the
retracting wire rope is slacked after performing
operation and measurement in steps 1 and 2,
readjustment is required.
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