CONTROLS AND INSTRUMENTS.

b . Pull back on parking brake lever to make

certain truck will remain in a stationary position

while it is being started.

c . Make certain the direction shift lever is in

neutral (central) position.

d. At initial starting, or if engine is cold, pull

choke control all the way out.

e. Press down on accelerator pedal approximately

3-20. DRIVE AXLE. The drive axle is mounted

one-third the distance from its normal position.

directly to the transmission and is driven by the

s p i r a l bevel pinion on the ` r a n s m i s s i o n output

shaft. The differential assembly is of the bevel gear,

full floating type and is mounted in the carrier on

Do not operate the starter motor

tapered roller bearings. The differential case is

continuously for more than 30 seconds. If

secured to the ring gear which is in mesh with the

the engine fails to start after 30 seconds,

drive pinion. The axle shafts are splined into the

allow the starter motor to cool for at least

differential side gears. Final gear reduction in the

two (2) minutes before attempting to start

axle is accomplished by a ring and pinion gear; the

the engine again.

pinion gear being on the end of the axle shaft and

the ring gear being a part of the wheel hub. The

f. Turn the ignition switch to START position.

service brakes are mounted inside the wheel hubs;

The starter motor will crank the engine. When the

the backing plate mounted to the axle housing and

e n g i n e s t a r t s , r e l e a s e s w i t c h a n d it

will

the drums being turned by the wheel hubs.

automatically return to ON position.

3-21. CONTROLS AND INSTRUMENTS.

Note

3-22. The following paragraphs explain the

function and proper use of all controls and

engine

becomes

over-choked

instruments furnished on the truck.

carburetor floods, push choke control in,

depress accelerator pedal fully, and engage

3-23. Refer to figure 3-2 for an illustration of all

starter. If all equipment is in working

controls and instruments. The table accompanying

order, the engine should start.

the illustration explains the function of each

control and gives the normal reading for each gage.

g. Hold accelerator pedal steady and allow engine

to warm up at a fast idling speed. Immediately

3-24. OPERATING INSTRUCTIONS.

observe engine oil pressure gage and ammeter for

normal readings. As engine begins to warm up,

3-25. Personnel required to operate this vehicle

should become thoroughly familiar with all

g r a d u a l l y push in on choke control; as soon as

controls and instruments as described in preceding

engine is warm, push choke control all the way in.

p a r a g r a p h s and illustrations, and should also

become acquainted with the specific handling and

h. Warm engine until it will idle smoothly with

operating characteristics of this vehicle prior to

the choke control pushed all the way in. Check for

actual

loading/unloading

performance of

proper reading on ammeter, engine oil pressure

operations.

gage, engine temperature indicator, and fuel

indicator. Be sure hour meter is operating properly.

3-26. STARTING THE ENGINE.

i. Remove foot pressure from accelerator pedal.

a. Perform the daily preventive maintenance

Report any malfunctions to the proper authority.

services, indicated in figure 4-1.

3-3