TM 5-4310-354-14
Section XVIII. MAINTENANCE OF INSTRUMENT PANEL GROUP
4-51. General. The instrument panel group consists of
necessary, tag wire leads as removed to
the unit controls and gauges that are mounted on the
aid in reassembly.
instrument panel assembly. The controls and gauges
can be categorized into three basic groups: the
(2) Disconnect air, oil, and fuel pressure hose
operation indicating group; unit control group; the safety
assemblies from gauge connections.
group. The operation indicating group consists of the
gauges that show engine speed in revolutions per
(3) Disconnect and remove tachometer drive
minute and elapsed running time, receiver air pressure,
cable from engine and tachometer drive
compressor oil temperature, engine oil pressure, fuel
adapter.
Remove the adapter from
level, fuel pressure, engine water temperature, and the
tachometer-hour-meter.
ammeter. Also, included in this group are the engine
and compressor air cleaner restriction indicators and the
(4) Drain engine coolant to a level below the
instrument panel lamp. The unit control group consists
cylinder head and remove the water
of the engine idle control, compressor unloader control,
temperature sensing bulb from engine
ignition switch, start pushbutton, safety override
cylinder head.
pushbutton, and the quick start assembly control "T"
handle. The safety group consists of the air pressure
(5) Disconnect and remove the compressor
switch and oil pressure switch mounted on the rear of
oil temperature sensing bulb from air
the instrument panel. Included in the safety group, but
discharge elbow.
not mounted on the instrument panel, are: engine water
temperature shutdown switch, engine overspeed switch,
(6) Disconnect the two air cleaner restriction
compressor oil temperature shutdown switch, and the
indicator hoses from the restriction
engine fuel injection pump solenoid.
indicators.
(7) Disconnect the Quick-Start control cable
4-52. Instrument Panel Assembly.
from quick start assembly actuating valve
a. Removal.
lever.
(1) Disconnect the negative (ground) battery
(8) Disconnect the compressor unloader
terminal cable clamp and remove clamp
control cable and the idle control cable as
from battery terminal; then, disconnect
necessary for removal of instrument panel
wiring harness leads and fuel level
assembly.
sending
unit
wire
assembly
from
instrument panel switches and gauges
(9) Remove the instrument panel assembly
(refer to wiring diagram, figure 1-3). As
from the unit as shown in figure 4-33.
4-62
