WIRE ROPE AND REEVING
MAINTENANCE
All wire ropes in active service should be inspected daily
along with spooling, sheaves, wedge sockets, and any other
wire rope fittings for damage. Once weekly a thorough wire
rope inspection should be made by a competent inspector. A
record should be kept of the inspection on the form provide
in section 4.
Refer to ANSI Standard B30.5 for guidelines covering the
inspection, maintenance, repair, and replacement of wire
rope. Worn, kinked, birdcaged, fatigued, or otherwise dam-
aged wire rope must be removed immediately. Wire rope,
when properly installed, lubricated, and employed, will give
many hours of satisfactory use. Whereas, a new piece of wire
rope can be immediately ruined if misused. Replace any wire
rope found to be in unsatisfactory condition.
In addition to damage such as kinking, crushing and broken
wires, factors such as corrosion, abrasion, pitting, peening,
and scrubbing of outside tires, reduction of rope diameter,
the condition of other components, and proper lubrication
are considered. Refer to section 4 for wire rope lubricating
procedures.
Before installing a new or replacement rope, make certain
the rope to be used is the proper type and size. The wrong
rope will not function properly and may even be dangerous.
Refer to Section 9 for instructions on inspecting and replac-
ing sheaves.
WIRE ROPE SPECIFICATIONS
MAIN & AUXILIARY WINCH
3/4” (19 mm) dia. 6 x 19 or 6 x 37
IWRC regular lay wire rope
Minimum Breaking Strength 25.6 Tons (23.3 MT)
MAIN & AUXILIARY WINCH
OPTIONAL HOIST LINE
3/4” (19 mm) rotation resistant
compacted strand 34 x 7 Grade 2160
Minimum Breaking Strength 34.5 Tons (31.4 MT)
The use of non-rotating 18 x 7 class wire rope is not rec-
ommended in multiple reeving applications and, if used
for applications involving single part line, must not be
used with loads exceeding one fifth (1/5) the rated break-
ing strength. The inner wires are generally the first to fail
on this class of rope making it very difficult to inspect as
broken wires cannot be seen. Refer to ANSI B30.5, Sec-
tion 5-2.4 for the necessary inspection procedure and
replacement criterion.
If non-rotating or spin resistant rope is used on this crane, the
rope must be replaced if two or more wires are found broken
in one lay of the rope.
CABLE REEVING
When reeving the machine for any job, remember that hoist-
ing and lowering speeds decrease as the number of parts of
line increases. For the most efficient use of the machine, it is
desirable to use the minimum number of required parts for
lifting the anticipated loads.
Never use less than the number of parts called for by the
load rating chart. The minimum required number of
parts is determined by referring to the load rating chart.
This machine incorporates a “Quick Reeving” boom head
and block which do not require removal of the wedge and
socket from the rope in order to change the reeving.
Removal of two pins in the boom head and three in the hook
block will allow the wedge and socket to pass through.
If a socket is changed or replaced, or if you are changing
hook block weights; it is important to use the correct
socket.
SERVICE AND ADJUSTMENTS
Issued: August 20036 - 22RT700 Series
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