When the engine starts, release the starter
The air brake system is so designed that an
switch and pull throttle back to idle speed. Let
automatically brake application is made when the
engine idle until the engine temperature reaches
service reservoir pressure falls between 40 psi. If
160F. Do not allow the engine to exceed 2,700
the emergency pressure should drop below 60 psi,
rpm at any time.
the emergency- part situation results automatically.
This same situation can be produced by actuating
NOTE
the emergency part brake control manually. A brake
For starting the engine in ambient temperatures
application may also occur on a vehicle being towed.
below 40 F., use the quick starting aid (3, fig. 2-14).
Be sure the towing vehicles air brake pressure has
sufficient pressure and capacity (120 psi) to release
2-11. Starting the Carrier Engine
the emergency park brake before attempting towing
(Model 2385)
operation.
a. Place transmission gear range selector control
CAUTION
Do not attempt to move the equipment until the
b. Turn all electrical accessory and light switches to
air pressure gage indicates sufficient air
OFF position.
pressure (120 psi) to operate the brakes. Partial
c. Turn battery disconnect switch (21) to ON
release of the emergency brake will generate
position.
heat and could cause tire and axle failure.
d. Turn main switch (27), to ON position.
e. Push hand throttle (16), forward to MID position.
(3) If the utility blade is down, pull the utility blade
f Press starter switch (34).
control lever (14) back and lock the blade by pulling up
on the utility blade lock control (5), and turning 1/4 turn
CAUTION
counterclockwise.
Do not operate the cranking motor more than 30
(4) Position the front axle declutch control (12) in the
seconds at one time. Allow at least 2 minutes for
two-wheel drive position by pushing the control lever
forward.
cranking motor to cool.
NOTE
When the engine starts, release the starter
The crane carrier should not be operated in four
switch and pull the throttle back to idle speed.
wheel drive at high speeds, over the road. The
Let the engine idle until the engine temperature
front axle may be engaged for mud, snow, or on
reaches 1600F.
ice or rough terrain to afford more traction.
NOTE
For starting the engine in ambient temperature
(5) Position the directional control lever (13) in the
below 40 F, use the quick-starting aid (fig. 2-16,
direction desired (forward or reverse) and the trans-
(46)).
mission gear range selector (11) in number one position
2-12. Stopping the Carrier Engine (Model 2380)
and depress the foot throttle (15) slowly. Shift the
a. Pull hand throttle (fig. 2-16, (16)) back to IDLE
transmission through all four gear ratios. Do not skip
position. and allow engine to run for 5 minutes to cool
shift the transmission.
before stopping.
NOTE
b. Turn off main switch to stop engine.
The lockout position of the transmission gear
2-13. Stopping the Carrier Engine (Model 2385)
range selector (11) provides means to lock the
a. Pull hand throttle (fig. 2-16, (16) back to IDLE
transmission and torque converter in third and
position and allow engine to run for 5 minutes to cool
fourth gears only. Do not attempt to shift
before stopping.
b. Turn off main switch to stop engine.
transmission on down grades. Do not use
c. Turn battery disconnect switch to OFF position.
lockup (third and fourth gears) on off-road
2-14. Operating the Crane Carrier (Model 2380)
travel).
a. Operating the Crane Carrier Over the Road.
b. Operating the Crane Carrier Over Rough Terrain,.
(1) Start the carrier engine (para 2-10) and
(1) Start the carrier engine (para 2-10).
allow brake air pressure to reach 120 psi.
(2) Raise the utility blade and lock in TRAVEL
(2) Push down emergency brake park control
position.
(4, fig. 2-14) and make a pedal brake application; hold
(3) Release the parking brake control as described
for 4 seconds, release brake pedal, and allow the air
in a above.
pressure to build up to 120 psi once more. Repeat this
(4) The carrier is equipped with a three-position
procedure once more. This procedure is necessary to
steering selector control (10, fig. 2-14) which can be
insure positive release of the park brakes.
used to place the crane carrier in a precise position.
Placing the steering selector control in four-wheel steer
position provides steering on both front and back wheels,
NOTE
allowing a reduced turning radius. When moving the
steering selector control back to
2-31
