99903514:TELESCOPIC CRANE:
2-9 SECTION 2: MAINTENANCE
In either case, the hydraulic oil must be replaced
for the system to function properly.
NOTES:
Keep system operating temperatures below
130°F, using oil coolers or heat exchangers.
Keep the system full to avoid sloshing and
overheating.
Use 10-micron filters or better.
Change fluid as specified.
Inspect oil regularly, and use lab testing to
determine oil quality.
Replace hydraulic components before they
contaminate the system.
2-6: WIRE ROPE & HOOK MAINTE-
NANCE
2-6-1: WIRE ROPE INSPECTION
OSHA requires regular inspections and perma-
nent, signed record-keeping on wire rope
inspections. These inspections help the crane
operator determine whether the rope can be
safely used. Inspection criteria, including
number and location of broken wires, wear and
elongation, have been established by OSHA,
ANSI, ASME and similar organizations.
WIRE ROPE INSPECTION
1. INSPECTOR - The wire rope inspector
must keep written reports of the rope condition
on file at the work site and must have the
authority to order wire rope replacements and
keep unsafe wire rope from being used.
2. PERIODS OF INSPECTION - Set up in-
spection periods for each material hoist wire
rope. Determine inspection frequency by
considering environment, degree of hazard to
materials, frequency of operation and the
frequency with which the wire rope is subjected
to its capacity limits. Inspect at least every 30
days.
3. METHODS OF INSPECTION - To inspect,
unwind the working length of the wire rope from
the hoist drum. Thoroughly inspect the rope
sections that pass over sheaves, drums or
contact saddles or which make opposing turns.
Inspect the rope close to the end attachments.
DO NOT open the rope for inspection.
4. USED WIRE ROPE - Thoroughly inspect
used wire rope prior to installation.
5. IDLE EQUIPMENT - Inspect wire rope on
idle equipment prior to operation.
Wire Rope Daily Inspection:
Inspect for kinking (sharp bends), crushing,
unstranding, birdcaging, core protrusion, rope
diameter loss, rope strand uneveness, general
corrosion, broken or cut strands, heat damange,
and integrity of end attachments.
Wire Rope Monthly Inspection:
Each month, inspect the entire length of the
rope, the wire rope eye, and the sheaves,
drums and other apparatus with which the rope
makes contact.
When a wire rope has been removed from
service because it is no longer suitable for use,
it must not be re-used on another application.
Every wire rope user should be aware of the
fact that each type of fitting attached to a wire
rope has a specific efficiency rating which can
reduce the working load of the rope assembly or
rope system, and this must be given due con-
sideration in determining the capacity of a wire
rope system.
2-6-2: WIRE ROPE LUBRICATION
Wire rope used on IMT cranes does not have
continuous lubrication replenishment. Use open
gear lubricant to protect the wire rope on your
crane. The areas of rope which experience the
most wear are located over sheaves or are
otherwise hidden, and these areas require the
most rope lubrication.
Lubricate the wire rope using ChainMate (TM)
Chain and Wire Rope lubricant or equivalent. To
lubricate the rope:
1. Clean dirt, dust, and foreign matter from the
rope.
2. Apply ChainMate lubricant or equivalent,
penetrating the strands of the rope. Apply
according to the lubricant specifications.
3. Apply lubricant heavily to portions which
encounter bending such as at the sheave and
winch.
20030115
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