Manitowoc CD25, Руководство оператора, Страница: 112 / 160

MAINTENANCE CD25
6-2 Published 1-06-2017 Control # 579-01
INTRODUCTION
Preventive maintenance is necessary to keep the crane in
good condition as long as possible. Adjust the maintenance
schedule to your operation, according to the type of work,
size of loads, temperature conditions and frequency of
equipment use.
The intervals in the Maintenance Schedule are for average
operating conditions, and must be understood as the
MINIMUM
maintenance necessary for the machine.
Decrease these intervals if the machine is operated in
conditions that are below average (for example, in dust, in
high or low temperatures, with heavy loads or frequent
starting and stopping).
Use the hourmeter and a calendar to make sure that all
necessary maintenance is done according to the schedule.
NOTE: When performing service on the crane, put a tag on
the key switch or remove the key to prevent
operation of the crane.
Spark Arresting Mufflers
NOTE: Codes of some states or provinces may require
that this crane be equipped with a
S PA R K
ARRESTING MUFFLER
. The State of California
as an example, is one state which has such
r e g u l a t i o n s f o r a g r i c u l t u r a l a n d f o r e s t r y
applications, plus a regulation for construction
applications in forest covered, brush covered, or
grass covered lands.
WIRE ROPE
General
The following information is a compendium of information
from various wire rope manufacturers and includes
inspection, replacement, and maintenance guidelines for
wire rope as established by
ANSI/ASME B30.5 , federal
regulations, and Manitowoc. The inspection interval shall be
determined by a qualified person and shall be based on such
factors as expected rope life as determined by experience on
the particular installation or similar installations, severity of
environment, percentage of capacity lifts, frequency rates of
operation, and exposure to shock loads. Periodic
Inspections need not be at equal calendar intervals and
should be performed at shorter time intervals as the wire
rope approaches the end of its useful life. A periodic
inspection shall be performed at least once a year. The
following provides inspection and maintenance procedures
for wire ropes used on Manitowoc products (e.g. wire rope
used as load lines [hoisting cables], boom extension and
retraction cables, pendant cables, tow winch cables, and
hook block tie down cables).
Environmental Conditions
The life expectancy of wire rope may vary due to the degree
of environmental hostility and other conditions to which these
mechanical devices are subjected. Variation in temperature,
continuous excessive moisture levels, exposure to corrosive
chemicals or vapors or subjecting the wire rope to abrasive
material may shorten normal wire rope life. Frequent/
periodic inspections and maintenance of your wire rope is
recommended for preventing premature wear and to insure
long-term satisfactory performance.
Dynamic Shock Loads
Subjecting wire rope to abnormal loads beyond the
endurance limit will shorten the wire rope’s life expectancy.
Examples of this type of loading are listed below.
• High velocity movement e.g.; hoisting or swinging of a
load followed by abrupt stops.
• Suspending loads while traveling over irregular surfaces
such as railroad tracks, potholes, and rough terrain.
• Moving a load that is beyond the rated capacity of the
lifting mechanism, i.e.; overloading.
Lubrication
A wire rope cannot be lubricated sufficiently during
manufacture to last it’s entire life. Therefore, new lubricant
must be added throughout the life of a rope to replace factory
lubricant which is used or lost. It is important that lubricant
applied as part of a maintenance program shall be
compatible with the original lubricant, and to this end, the
rope manufacturer should be consulted. Lubricant applied
shall be of the type which does not hinder visual inspection.
Those sections of rope which are located over sheaves or
otherwise hidden during inspection and maintenance
procedures require special attention when lubricating rope.
The object of rope lubrication is to reduce internal friction and
to prevent corrosion.
WARNING
Personnel Injury Hazard!
Do not use gasoline or other flammable fluids to clean
component parts. Fire or explosion may occur causing
bodily burns.
Use eye protection when performing service or
maintenance tasks. Propelled and/or dropped items can
cause eye injury.
If maintenance or adjustments must be performed with
the engine running, have a person at the controls while
another person performs the work to prevent accidental
movement which could cause injury or death.
Reference Only