Carrier Controls and Instruments - TM-5-3810-227-150054

Section III. CONTROLS AND INSTRUMENTS - TM-5-3810-227-150053

Air Pressure Gage - TM-5-3810-227-150055

TM-5-3810-227-15 Crane-Shovel Basic Unit Truck Mounted: 20 Ton 3/4 Cu.Yd. Gasoline Engine 6x6 Manual
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part of the dial, the batteries are properly charged for

f. Accelerator Pedal (A, fig. 13). The accelerator

normal operation.

pedal is located on the floorboard to the right of the brake

pedal and controls the carburetor accelerator mechanism

l. Warning Lights (B, fig. 13). There are two

which regulates the fuel-air mixture fed to the engine.

warning lights on the instrument panel. The one on the

Depress the pedal to increase the speed. When pressure

left, next to the oil pressure gage gives a red light when

is released the pedal will return to its normal position.

the oil pressure is below the operating minimum. The

light on the lower right of the instrument panel, next to the

g. Brake Pedal (A, fig. 13). The brake pedal is

water temperature gage gives a red light when the water

located on the floorboard immediately to the right of the

temperature is above the safe operating maximum.

steering column and actuates the air brake valve and

controls the air being delivered to, or released from the

m. Oil Pressure Gage (B, fig. 13). The oil pressure

brake chambers.

gage is located to the left of the speedometer and

indicates the engine lubricating oil pressure. Normal oil

h. Clutch Pedal (A, fig. 13). The clutch pedal is

pressure at operating temperature and speed is 50 to 60

located on the floor directly to the left of the steering

pound per square inch. With a cold engine, the pressure

column. The clutch is used to engage or disengage the

will exceed this. This gage should show pressure as soon

engine from the transmission to permit shifting gears.

as the engine is started. Failure of the oil pressure gage

The clutch pedal is pushed in to disengage and let out to

to operate is a danger signal.

Stop the engine

engage the clutch.

immediately and check the cause.

i. Panel Light Rheostat. (B, fig. 13). The panel

n. Turn Indicator Lights (B, fig. 13). The Turn

light rheostat is located at the extreme left of the carrier

indicator lights are mounted near the top of the instrument

control panel and provides control of the instrument panel

panel. The one on the left comes on when the turn signal

lights. They can be turned up or down to the desired

lever is moved for a left turn. The one on the right comes

illumination required.

on when the turn signal lever is moved for a right turn.

j. Light Switch (B, fig. 13). The light switch

o. Speedometer (B, fig. 13). The speedometer is a

assembly is located at the left side of the carrier control

circular, needle-type indicator calibrated from 0 to 60. It

panel and is used to control the lights on the crane carrier.

indicates the speed the vehicle is traveling and registers

The switch assembly has three lever type switches. The

the miles traveled. It is located near the left center of the

lower left lever controls the instrument panel lights and

instrument panel.

the parking lights. The lower right lever is a two position

lock lever.. The top control lever controls the service and

p. High Beam Indicator Light (B, fig. 13). The high

blockout lights. Lever positions are marked on the switch.

beam indicator light is located in the center, near the top,

of the instrument panel. It gives a red light if the

k. Battery-Generator Indicator (B, fig. 13). The

headlights are on high beam and goes off when the lights

indicator is located on the instrument panel to the left of

are switched to low-beam.

the speedometer. This instrument indicates the condition

of the batteries when the engine is running or stopped.

q. Tachometer-Hourmeter (B, fig.

13).

The

The ignition switch must be in the ON position, before the

tachometer-hourmeter is located to the right of the

indicator will show battery condition. If the needle is in

speedometer and shows the engine revolutions per

the RED part of the dial batteries are dangerously low and

minute and registers the number of hours the engine

need immediate attention.

If the needle is in the

operates.

YELLOW area the batteries are in a weakened condition

r. Air Pressure Gage (B, fig. 13). The air pressure

and should be serviced or charged during the next regular

gage is located on the instrument panel to the right of the

maintenance period. When the needle is in the GREEN

AGO 6819A

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