Case 580SR, Руководство по обслуживанию

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SECTION 55 - ELECTRICAL SYSTEM 3
1. GENERALITIES
1.1 TEMPORARY WIRING HARNESS REPAIR
The following method to repair wiring is a temporary
expedient only. Wiring should be replaced as soon
as possible. Replacement of temporary repaired ca-
bles with new is particularly important if the loader
backhoe is to be used for spraying as chemicals can
enter the repaired area, travel up the cable and dam-
age electrical components. Do not attempt to repair
the wire on any system sensors as these are sealed
and should only be replaced with a new component.
NOTE: when conducting a cable repair it is impor-
tant that only RESIN CORED SOLDER is used. Use
of other types of solder ma result in further cable
damage.
To carry out a temporary repair, proceed as follows:
Z
Locate damaged portion of cable then cut away
outer protective cover on both sides of the dam-
aged area.
Z
Peel back the cable from both ends of the dam-
aged area and carefully cut away the inner cable
cover at the damaged area and strip about 13 mm
of insulation from the wires. Do not cut away any
wire strands.
Z
Using a suitable solvent, clean about 50 mm from
each cover end. Clean the grey cable cover and
the individual leads.
Z
Twist two bare leads together for each damaged
lead, being careful to match wire colours, then sol-
der the leads using resin cored solder. Tape each
repaired lead with vinyl insulation tape.
Z
Wind a layer of vinyl insulation tape up to the grey
cable cover at each end of the repair section. Make
a paper trough, then apply silicon rubber com-
pound (non hardening sealant) over the repaired
section up to the cover ends. Sufficient sealant
must be used to fill the ends of the cut away area.
Z
Allow the compound to cure then cover the area
with insulating tape taking the tape well over each
end of the repair. An overlap of at least 50 mm of
tape at each end is necessary.
Z
Check to ensure the repair is satisfactory and se-
cure the repaired cable so that repeat damage is
avoided.
NOTE: this is a temporary repair only. Ensure the
damaged cable is replaced as soon as possible to
prevent ingress of water or chemicals.
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