(4) Position end of cable in dead end socket
3-38. Instrument Panel
and
Cab
Light
Lamp
of drum and secure by driving cable wedge into the
Replacement
drum dead end socket.
a.
(5) Wind cable length on hoist drum until
preventive maintenance checks and services on
completely off of reel, or out of coil, then begin reeving
operating machinery within cab enclosure is furnished
cable through sheaves as shown on applicable reeving
by lamps in holders on cab ceiling behind operators seat
diagram.
and on left rear side. These lamps are to be augmented
(6) Install remaining cables in a similar
by use of trouble light (para 2-27).
Panel lights
manner.
illuminate instruments on control stand and switches on
c.
Cable Lubrication.
lighting control panel.
(1) General. When cables are removed
b.
Lamp Replacement.
from drums at time of front end attachment conversion,
(1) Panel Lights. Remove cover by turning
the cable that is serviceable should be wiped free of dirt
counterclockwise; remove defective lamp by pressing in
and thoroughly lubricated with HDO engine oil (see
and turning counterclockwise to free prongs. Insert new
current lubrication order LO 5-3810-206-12) as it is
lamp and install cover by reversing this procedure.
placed on reel, or in a coil, for storage.
(2) Cab Lights. Remove lamp by pressing
(2) Method of lubrication at removal.
in and turning counterclockwise to free prongs. Insert
(a) Paint brush application.
For penetration
new lamp, push in, and turn clockwise to engage prongs
between strands, and safety from injury by a single
of lamp in socket of holder.
broken strand of wire, use two paint brushes from
opposite sides of wire. Saturate brushes freely and
3-39. Cable Replacement
frequently in HDO engine oil and cover cable thoroughly
on all sides as it comes off drum toward reel or coil.
a.
Cable Removal. To replace a defective
Use drying brushes to wipe away excess oil as -it goes
cable, from shovel hoist drum or when changing front
on reel, or in coil.
end attachment, proceed as follows:
(b) Rag application. Saturate two large rags in
(1) Remove cable clamps securing cable in
HDO, hold one in each hand, and oil cable plentifully as
dead end socket on right hand boom point sheave (fig.
it comes off drum. Wipe away excess oil before cable
winds on reel, or in coil.
(2) Slowly wind cable on drum through right
WARNING
hand boom point sheave, dipper sheave, and left hand
boom point sheave.
Use heavy leather gloves while
(3) Unwind cable from hoist drum, carefully
holding oily rags on cable, and avoid
coiling slack in a suitable box, or on a reel, then
injury by a broken strand of wire.
disconnect cable from dead end on lagging of drum.
(3) Lubrication at installation.
The
(4) Remove remaining cables in a similar
procedure outlined above should be reversed at
manner.
installation, if cable being installed appears in need of
b.
Cable Installation.
lubrication. Lubricate groove and hub of sheaves as
(1) Refer to table 1-2 and select proper type
cable are reeved also (LO 5-3810-206-12).
and length of cable for required operation.
NOTE
(2) Place reel, or coil, of cable at left side of
Field tests have proved that cables,
crane-shovel near boom foot.
like any machined part, last longer
(3) Pull loose end of cable from reel, or coil,
when they are kept well lubricated.
and lead the end of cable to the proper drum.
Section V. TROUBLESHOOTING
crane-shovel and its components. Malfunctions which
3-40. General
may occur are stated, and followed by a list of probable
causes of the trouble.
The corrective action
This section provides information useful in diagnosing
recommended is described opposite the probable cause.
and correcting unsatisfactory operation or failure of the
3-41
