Terex RL4000D2 Series User Manual

November 2006
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WIRE ROPE REPLACEMENT
CRITERIA FOR
REPLACEMENT OF WIRE ROPE
– TEREX LIGHT TO
WERS
The wire ropes used
to raise and
lower the masts on a TEREX Light T
ower are probably some of
the most important mechanical parts used in day-to-day oper
ation of the machinery
.
It is there-
fore very important that the cables be inspected on a
frequent basis (once a month) for wear and
tear, and immediately in the event of possible damage due to operator error
in using the winch, or
possible damage from other equipment.
NORMAL WEAR AND TEAR
When used properly, the wire ropes should give years of trouble-free service, depending on how
often the masts are raised and lowered.
The rule of thumb at TEREX is that if the tower is
raised
and lowered an average of
once per day
, that the cables
should be replaced every two
years of service
.
NORMAL
INSPEC
TION
The wire ropes are constructed of
7 strands of 19 plow steel wires
each twisted together, and
then the assembly galvaniz
ed to resist corrosion.
Using a wadded-up cloth or heav
y leather
gloves (to avoid being pricked by a broken
wire), run a hand up and
down a length of the cable.
If any exterior wires are broken, they will lift up
from main body of the cable and
become visible.
For any given 1 foot of cable length; if there are 4 or more wires each, on any 2 or more strands
broken, the suspect rope
should be replaced
immediatel
y
.
DAMA
GE INSPECTIO
N
If any nicks (partial strand cut through), kinks (permanent bends), or weld spatter on the cable
(from field service) are observed, the suspect wire rope
should be changed immediately.
If
there is a crushed spot somewhere on the wire rope, it should be
replaced only
if the width of
the crushed spot exceeds 1-1/4 times the nominal
diameter of the cable (5/16” on
a 1/4” cable,
and 7/32” on a 3/16” cable), or
if there are broken wires at the point of damage.

Terex RL4000D2 Series Specifications

General

Brand	Terex
Model	RL4000D2 Series
Category	Industrial Equipment
Language	English