Lesson 4/Learning Event 2
Once access to the control panel components has been gained, the following
items can be replaced.
Fuel quantity gage. Disconnect and tag the wires from the rear of the fuel
quantity gage.
Remove the nuts that fasten the gage to the mounting
bracket.
Remove the faulty gage from the mounting bracket and pull it
through the front of the control panel.
Position the new gage in the
control panel. Fasten the gage to the mounting bracket at the rear of the
control panel. Connect the wires to the terminals on the gage.
Fuel indicator switch. Disconnect and tag the wires from the rear of the
fuel indicator switch.
Remove the hex nut and bushing from the switch
through the front of the control panel. Remove the faulty switch from the
rear of the control panel. Position the new switch in the control panel.
Install the bushing and the hex nut on the switch from the front of the
control panel. Connect wires to the rear of the switch.
Oil-pressure switch. Disconnect and tag the wires from the rear of the oil-
pressure switch.
Remove the hex nut and bushing from the switch at the
front of the control panel. Remove the faulty switch from the rear of the
control panel.
Position a new switch in the control panel.
Install the
bushing and hex nut on the switch from the front of the control panel.
Connect the tagged wires to the rear of the switch.
Oil-pressure gage. Disconnect and tag the wires from the rear of the faulty
Remove the nuts that
fasten the gage to the mounting bracket. Pull the gage through the front of
the control panel. Position the new gage in the control panel. Install the
nuts to fasten the gage to the mounting bracket. Connect the tagged plug
connectors to the socket connectors on the gage.
Generator warning light. Disconnect and tag the wires from the rear of the
Remove the hex nut and washer that fasten the
light receptacle to the control panel. Pull the light through the opening
and out the front of the control panel.
Position the new light in the
control panel from the front. Install the washer and hex nut on the light
and draw the light up tightly against the back of the control panel.
Connect the tagged wires to the rear of the light.
Inspect to make sure
that the bulb and lens are satisfactory.
Vacuum gage. Disconnect the tubing from the pipe nipple at the rear of the
control panel beneath the gage. Remove the nut washers, spacers, and screws
that fasten the gage to the control panel. Remove the bezel from the front
of the control panel. Remove the gage from the back of the control panel
and remove the elbow. Install the elbow on the new gage and position the
new gage in the
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