Komatsu PC210-8, Shop Manual

Page: 27 / 1200

00 Index and foreword UEN00094-00
PC210, 230, 240-8
11
3) Disconnections in wiring
If the wiring is held and the connectors are
pulled apart, or components are lifted with
a crane with the wiring still connected, or a
heavy object hits the wiring, the crimping
of the connector may separate, or the sol-
dering may be damaged, or the wiring
may be broken.
4) High-pressure water entering connector
The connector is designed to make it diffi-
cult for water to enter (drip-proof struc-
ture), but if high-pressure water is sprayed
directly on the connector, water may enter
the connector, depending on the direction
of the water jet. Accordingly, take care not
splash water over the connector. The con-
nector is designed to prevent water from
entering, but at the same time, if water
does enter, it is difficult for it to be drained.
Therefore, if water should get into the con-
nector, the pins will be short-circuited by
the water, so if any water gets in, immedi-
ately dry the connector or take other
appropriate action before passing electric-
ity through it.
5) Oil or dirt stuck to connector
If oil or grease are stuck to the connector
and an oil film is formed on the mating sur-
face between the male and female pins,
the oil will not let the electricity pass, so
there will be defective contact. If there is
oil or grease stuck to the connector, wipe it
off with a dry cloth or blow it dry with com-
pressed air and spray it with a contact
restorer.
a
When wiping the mating portion of the
connector, be careful not to use
excessive force or deform the pins.
a
If there is oil or water in the com-
pressed air, the contacts will become
even dirtier, so remove the oil and
water from the compressed air com-
pletely before cleaning with com-
pressed air.