Komatsu SK820-5 turbo, Operation & Maintenance Manual

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MAINTENANCE PROCEDURE
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4.8.2.f CHECKING THE WATER SEPARATOR
FOR SEDIMENTS AND WATER
WARNING
q
Fuel is flammable; neither use naked flames, nor smoke
while draining it.
q
If some fuel should inadvertently be spilled, clean the
dirty area immediately.
The water separator can be reached after opening the engine
hood (see "3.5.1 ENGINE HOOD"), lifting the loader arm and
securing it with the safety lock (see "3.1.1 LOADER LOCKS").
The check must be carried out by means of the red ring (1) in-
stalled on the water separator.
When the red ring floats on the surface of the water present in
the water separator, it is necessary to drain it. Proceed as fol-
lows:
1 - Turn the cock (2) to close the fuel flow.
2 - Loosen the wing cap (3) and drain the condensate until
clear Diesel oil flows out.
3 - Open the fuel cock (2).
4 - Drain the fuel tank as described in paragraph "4.8.1.c
DRAINING THE FUEL TANK".
5 - Bleed the fuel supply circuit as described in paragraph
"4.8.8.a CHANGING THE FUEL FILTER".
IMPORTANT
q
If the filtering element is considerably clogged or dam-
aged, change it.
4.8.2.g CHECKING THE WIRING SYSTEM
WARNING
q
If the fuses are corroded, oxidized or they are not perfectly held in their seat, replace them only with fus-
es having the same capacity; before changing a fuse, make sure that the ignition key is in position « ».
q
If there are signs of short circuit on the cables, find out the cause and repair them; always contact your
Komatsu Dealer for the troubleshooting.
q
Before checking the wiring, take all the necessary precautions to ensure safety.
Make sure that there are no disconnected cables or signs of short circuits in the electrical system.
Make sure that all the cables are well tightened in the corresponding terminals; tighten any loose cables.
RWAB0050
RWA36740
1
2
3
RKAB1690
2
3