BOOM RT530E-2 SERVICE MANUAL
4-34 Published 4-22-15, Control # 556-00
HOOK BLOCK
Description
A 27 metric ton (30 ton) hook block, a 30 metric ton (33 ton)
hook block, and a 6.8 metric ton (7.5 ton) headache ball are
available for the crane. The hook blocks utilizes a one-piece
pivot block and the hook is equipped with a safety latch. Both
hook blocks are the quick reeve design. Grease fittings are
provided to ensure lubrication of all moving parts.
Maintenance
Periodic Maintenance
It is recommended that the hook block and/or headache ball
be inspected every 50 hours. A complete disassembly
inspection should be conducted every quarter or 500 hours
in the area of the hook, hex nut, and threaded areas for
corrosion and proper fit. After assembly of the hook, a liberal
coating of multipurpose grease should be applied to the nut
and threaded areas by brush or hand to prevent corrosion.
For hook blocks and other load handling devices not
manufactured by Grove Worldwide; follow the
manufacturer’s inspection and testing recommendations to
assure an adequate preventative maintenance program is
established.
CAUTION
Do not use a swivel type headache ball with 18 x 19 wire
rope.
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