Technical information

DRAGLINE ELECTRICAL SYSTEM
Hand start engines and 415 volt electric
motor driven mixers:
Up to serial numbers:
0842 for 300R & 400R,
0312 for 500R
Voltage setting instructions
Set the voltage as follows:
(to be read in conjunction with the
illustration on the following page)
Start the machine.
Plug in loading shovel to machine.
Remove solenoid valve cover and
regulator adjusting screw rubber plug.
Connect a D.C. voltmeter to the two
way terminal block inside the valve
body. With the aid of a second person
to operate the loading shovel, by
depressing the shovel control unit push
button, note the reading on the
voltmeter.
The correct figure should be 12 volts. If
the voltmeter reads in the reverse
direction, interchange the voltmeter
leads.
If voltage is incorrect, then with the
meter still connected and the loading
shovel working, turn voltage regulator
adjusting screw (8) (situated above
connection point 'A') with a small short
screwdriver, either clockwise or
anticlockwise until meter reads 12 volts
constantly.
After adjustment, replace valve cover
and regulator plug.
Note: Do not interfere with adjusting
screw above connection point 'E'.
3.20 SERVICING