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UD Trucks. Owner’s Manual (2011-2013) - page 8

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HEATER OR AIR CONDITIONER CONTROL

Heating

z

Moving the mode dial to the Foot

position will blow warm air on the

feet.

z

The temperature control dial is

used to adjust the air temperature,

and the fan dial is used to adjust

the fan speed as desired.

z

When you want to heat up the cab

quickly or when you are in a dusty

location, push the Fresh/Recircula-

tion switch to select the inside air.

z

When the windshield fogs up eas-

NOTE:

ily, set the air vents to Foot &

z Mode dial Foot & Defrost

1

Defrost.

blows more air through the foot

vents than the defrost vents,

and Foot & Defrost

2 blows

more air through the defrost

vents than through the foot

vents.

9 - 5

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HEATER OR AIR CONDITIONER CONTROL

When resting in the seat

Use the heater as instructed below when idling the engine to heat the cab during cold weather.

No.

Operation method and description

Illustration

Adjust the air conditioner temperature higher than normal.

z The air temperature in the cabin rises according to the adjustment of the tem-

perature control dial.

1

NOTE:

z The air temperature in the cabin tends to decrease because the tempera-

ture of the engine coolant becomes low. Set the air conditioner tempera-

ture higher beforehand to keep the air temperature comfortable.

Push the air conditioner switch and turn off the position light (heater mode).

z The air conditioner compressor stops.

NOTE:

2

z When the position light is on (dehumidifier mode), the air conditioner

cools the incoming air before warming it. Thus, the air temperature from

the vent becomes low.

Push the fresh/recirculation switch to illuminate the position light of the inside air recir-

culation mode.

z The intake vent is fixed at inside air recirculation.

3

NOTE:

z The air temperature from the vent becomes low when the outside air mode

is selected because the cold outside air is warmed. However, the air tem-

perature from the vent becomes high when the inside air recirculation

mode is selected because the warm inside air is warmed again.

If the air temperature in the cabin is cool after performing steps 1 to 3 above, perform the following step.

9 - 6

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HEATER OR AIR CONDITIONER CONTROL

No.

Operation method and description

Illustration

Turn the warm-up switch to the ON position.

z The exhaust brake operates, and the idle speed increases and then the temper-

ature of engine coolant rises.

NOTE:

4

z While parking the vehicle for a long period of time, the temperature of the

engine coolant tends to decrease. However, using the warm-up switch

allows sufficient performance of the heater.

z For details on how to use the warm-up switch, refer to the “VEHICLE

OPERATION” chapter.

If it is still cold, even when the warm-up switch is turned on, operate the engine

throttle control knob to turn idle speed up with the warm-up switch in the ON posi-

tion.

5

<When resting in the seat after driving>

Push the fresh/recirculation switch to illuminate the position light of the inside air recir-

culation mode.

z The intake vent is fixed at inside air recirculation.

NOTE:

z The heater utilizes heat from the engine coolant. While idling, the engine coolant temperature gauge may indicate a

lower value because the temperature of engine coolant tends to decrease. However, performing the steps above will

allow sufficient performance of the heater.

9 - 7

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HEATER OR AIR CONDITIONER CONTROL

Vent & Foot (Cool head, warm feet)

Defrost

Switching between inside and

outside air

z Moving the mode dial to the Vent &

Putting the mode dial in the Defrost

position will blow warm air from the

Normally, the intake vents use out-

Foot eliminates the discomfort

defroster on the inside of the wind-

side air, but when you want to

caused by the warm air making the

shield.

avoid dust, exhaust fumes, etc.,

heat too hot, etc.

push the Fresh/Recirculation

z The temperature control dial is

switch to switch to inside air recir-

used to adjust the air temperature,

culation.

and the fan dial is used to adjust

the fan speed as desired.

NOTE:

z When the mode dial is moved to

the Defrost position, the com-

pressor begins to run and the

intake vents are set to outside

WARNING

air. Note that the compressor

might not turn on due to certain

z Do not use inside air recircula-

conditions, such as the outside

tion for a long time. Doing so

air temperature.

will cause the air inside the

z When the mode dial is moved to

cab to become foul or the

the Defrost position, the mini-

windshield to fog up, etc.

mum amount of air will blow

even if the fan dial is set to OFF.

9 - 8

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HEATER OR AIR CONDITIONER CONTROL

Cooling and dehumidifying

Information regarding automobile

refrigerant

z

Cooling and dehumidifying can be

z The cooling performance could

done by pushing the air condi-

drop causing poor cooling if there

tioner switch.

is insufficient refrigerant or the

z

The temperature control dial is

refrigerant compressor belt is

used to adjust the air temperature,

loose.

the fan dial is used to adjust the

z If refrigerant is leaking, have it

fan speed, and the mode dial is

inspected by the nearest autho-

used to select the air vents as

rized UD Trucks dealer. Also, if the

desired.

belt is loose, have it adjusted.

z

When you want to quickly cool

down the cab, push the Fresh/

Recirculation switch to switch

CAUTION

inside air recirculation.

z Use Freon HFC134a to help

protect the environment. Only

use the specified refrigerant to

charge the cooling system.

z To protect the global environ-

ment, do not discharge refrig-

erant into the atmosphere.

9 - 9

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VEHICLE OPERATION

Cold weather conditions (Vehicle

cate that the anti-overheating

with intake air heater system: If so

function is operating.

equipped):

This message displays the cool-

1.When the engine coolant tempera-

ing time (10 to 15 minutes regu-

ture is low, turn the ignition key to

larly) that is required for the

ON position. The indicator light

starter to operate again.

turns on and pre-heating is carried

out.

2.After the indicator light turns off,

turn the ignition key to the START

position and start the engine. After

starting the engine, the indicator

z

Turn the ignition key to ON posi-

light will illuminate again and after-

tion before depressing the

heating will be performed for a set

accelerator pedal. When the

time.

ignition key is at LOCK or ACC

position, the fuel system func-

NOTE:

z

When the PTO engine start inter-

tion for cold weather will not

z The engine start control system

rupt warning is operated, a

operate.

is equipped with an automatic

warning and a warning message

z

Right after stalling the engine,

anti-overheating device. (Gener-

will be displayed. These warn-

the engine start control system

ally, when attempting to start the

ings indicate that the engine is

inhibits the cranking for about 1

engine for about

15 seconds

unable to start because the PTO

second to avoid the damage for

and doing so three or four times

switch is in the ON position.

the starter.

in a row, this will cause the

If this occurs, turn the PTO

z

When the engine does not start

operation of the automatic anti-

switch to the OFF position, and

on the first attempt, wait approx-

overheating device.)

then start the engine.

imate 30 seconds before trying

When the anti-overheating

again.

device is operated, a warning

and a warning message will be

displayed. These warnings indi-

10 - 5

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VEHICLE OPERATION

z

Do not keep the starter engaged

for more than 15 seconds at a

WARNING

time.

z

Do not start or idle the engine

in inadequately ventilated

areas. Carbon monoxide poi-

soning can cause uncon-

sciousness and is potentially

lethal.

z

Avoid breathing exhaust

fumes. If you suspect that

exhaust fumes are entering the

cab, stop the vehicle immedi-

3.When the engine starts, make sure

ately. Open all windows, and

the gearshift lever is still in neutral

have the vehicle inspected and

If the vehicle is equipped with

repaired immediately. Do not

automatic transmission, the selec-

drive the vehicle if you notice

tor lever is still in the N (Neutral) or

the presence of any exhaust

fumes in the cab.

P (Parking) position, and release

z

Do not use ether or other start-

the clutch pedal (Not available with

ing aids which are flammable.

automatic transmission).

z

Avoid attempting to start your

vehicle by pushing or towing.

Instead, use the jump starting

procedure or tow your vehicle,

as described in this manual, to

the nearest service station.

10 - 6

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VEHICLE OPERATION

WARMING UP ENGINE

CAUTION

z

Do not attempt to start the

To avoid shortening engine life,

engine with a power source of

engine warm-up is necessary. The

more than 12 volts.

warm up is performed by adjusting

z

After the engine starts, do not

the engine throttle control knob.

turn the ignition key to the

START position. This could

Adjusting engine idling speed

cause damage to the starter

The automatic adjustment of engine

motor and/or engine.

idling speed.

z

Do not attempt to start the

z

When the engine throttle control

vehicle until the intake air

knob is turned all the way to the

heater indicator light goes out.

left, automatic idling mode will be

reached, and the idling speed will

be adjusted automatically accord-

ing to the temperature of engine

coolant.

Refer to "Engine throttle control

knob" on page 7-53.

z

Normally, the knob should be

turned all the way to the left (coun-

terclockwise).

z

When the knob

is

turned

to the

right

(clockwise), the

mode

changes from automatic

idling

mode to manual adjustment mode,

the engine speed will increase,

and adjustment up to about 980

rpm will become possible.

10 - 7

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VEHICLE OPERATION

Deactivation

STOPPING THE ENGINE

Turn the warm-up switch to OFF to

After vehicle operation, idle the

turn off the indicator lights and can-

engine for

3 to

5 minutes before

cel engine warm-up.

stopping the engine. After the engine

is cooled by idling, stop the engine.

Follow the instructions in the "Engine

stop" on page 7-4. Turn the ignition

key to the OFF position.

NOTE:

z For information regarding pre-

cautions when using the

warm-up switch, refer to the

"Engine warm-up switch" on

page 7-54.

10 - 9

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VEHICLE OPERATION

DRIVING IN DIFFICULT

improperly inflated tires provide

OPERATING WITH MANUAL

CONDITIONS

poor traction and increase the haz-

TRANSMISSION

1.Ice, snow, loose sand, mud or wet

ards of driving on slippery sur-

Your UD Trucks vehicle is equipped

surfaces present hazardous driv-

faces.

with a manual transmission with 6

ing conditions. Tire traction is

4.A loaded vehicle handles differ-

forward and 1 reverse gears. The

ently from an empty one. Be pre-

gear shift pattern is shown on the

decreased, stopping distance

pared for

longer

stopping

shift lever knob.

becomes unpredictable and heavy

braking, sudden maneuvers or

distances, slower acceleration,

excessive speeds can result in

more leaning on curves, different

loss of vehicle control.

steering response. A vehicle

should be evenly loaded.

5.When driving on slippery surfaces

CAUTION

or on curves, be sure to use the

service brake together with the

z When a wheel spins when trac-

tion is poor, do not spin the

exhaust brake.

wheels for a long time or the

differential could seize up.

CAUTION

2.On slippery surfaces, avoid quick

Familiarize yourself and others oper-

z Never drive the vehicle

movements of the steering wheel

ating the vehicle with the manual

through a flooded area. If the

transmission, the gear shift pattern

or transmission shift lever. Gently

water is deep enough to reach

and clutch operation. When using

apply the brakes steadily and

the bottom of the oil pan, this

the clutch, be sure that the clutch is

evenly to avoid skidding and wheel

will cause failure of the cooling

fully engaged or disengaged. Never

lockup. Decrease your vehicle

fan, slippage of the drive belts,

operate the vehicle with the clutch

or failure of the engine due to

speed and allow for extra stopping

partially engaged.

water sucked into the air

distances.

intake.

3.Always make sure your tires are in

good condition. Badly worn or

10 - 11

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VEHICLE OPERATION

CAUTION

WARNING

z

Do not ride the clutch pedal.

To avoid engine and clutch fail-

“Riding the clutch” by resting

ure which may result in serious

your foot on the clutch pedal

injury:

while driving can lead to pre-

z Do not operate your vehicle

mature clutch failure.

with a worn or damaged

z

Avoid shifting the transmis-

clutch.

sion into first gear while the

z Do not operate the vehicle with

vehicle is moving. Shifting into

your foot resting on the clutch

first gear while moving may

pedal.

damage the transmission.

z Do not use the clutch to hold

z

Stop the vehicle completely

your vehicle on a grade.

before shifting from forward to

reverse or from reverse to for-

To reduce the possibility of loss

ward.

of vehicle control:

z

When shifting down or up, shift

z Do not allow the vehicle to

the lever being careful not to

coast with the clutch pedal

pass the correct shift gate.

depressed or with the trans-

When shifting from 6th to 5th

mission in neutral.

gear, push the shift lever to the

z Do not operate the vehicle with

right. If this is not done during

the clutch partially engaged.

shifting 6th to 5th, a misdown-

z Always use

1st gear when

shift to

3rd gear may occur,

starting to move the vehicle.

resulting in engine overspeed-

ing and possible engine or

clutch damage.

10 - 12

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VEHICLE OPERATION

Double-clutch operation

Use the following double-clutch technique when shifting:

1.Fully depress the clutch pedal to

3.Release the clutch pedal. When

6.Release the clutch pedal. When

disengage the clutch.

downshifting, raise the engine

downshifting, wait until engine

2.With the clutch pedal fully

speed using the accelerator pedal.

speed corresponds to the road

depressed, shift the gear shift lever

4.Fully depress the clutch pedal

speed of the next lower gear

to the neutral position.

again.

before shifting. Do not overspeed

5.While holding the pedal down, shift

the engine.

to the next gear.

10 - 13

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VEHICLE OPERATION

OPERATING WITH

ALLISON 1000, 2200 and 2500

AUTOMATIC TRANSMISSION

automatic transmission (1000:

Your UD trucks vehicle may be

Optional for UD1800 and UD2000)

equipped with an optional automatic

(2200: Optional for UD2300 and

transmission. The automatic trans-

UD2600)

mission has the operation flexibility

(2500: Optional for UD3300)

of manual selecting and holding in

The Allison

1000, 2200 and 2500

lower driving ranges.

automatic transmissions have 5 for-

This permits the driving selection of

ward and 1 reverse gear ranges.

the most suitable forward gear range

to match varying road and load con-

1000 and 2200 series

ditions.

2500 series

(P): Park Position —

z This position is used when starting

the engine, for warming up the

engine, and when stopped or

parked. The engine can only be

10 - 14

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VEHICLE OPERATION

started when the shift lever is in

lever will move). At this time the

NOTE:

the P (Park) or N (Neutral) posi-

SHIFT LIMIT warning light comes

z When shifting from Neutral to

tion.

on. If this occurs, stop the vehicle,

any other range, approximately

z When shifting from Park to any

and shift first to P

(Park) or N

1 second is required for the

other range, depress the brake

(Neutral). Then depress the brake

transmission clutch to connect.

pedal while shifting.

pedal and shift to the desired driv-

If

the accelerator pedal is

z Shifting is not done if the engine

ing range.

depressed during this time,

excessive stress is placed on

speed is high (1,000 rpm or more).

(N): Neutral Position —

the transmission. Wait until the

z

This position is used when starting

clutch has connected and then

Use P (Park) for the following.

the engine, for warming up the

gradually depress the accelera-

z to turn on or turn off the engine

engine, and when stopped. The

tor pedal.

z to check vehicle accessories

engine can only be started when

z to operate the engine in idle for

the shift lever is in the P (Park) or

(D): Driving Position —

longer than five minutes

N (Neutral) position.

z

This is the position used during

z for stationary operation of the

z

When shifting from Neutral to a

normal driving.

power takeoff

(if your vehicle is

driving range, depress the brake

Gears will change from 1 - 5 when

equipped with a PTO)

pedal while shifting. At this time

the overdrive (O/D) switch is on,

This position places the transmission

the SHIFT LIMIT warning light illu-

and from 1st to 4th when it is off.

in N (Neutral) and engages the park

minates. If this occurs, return the

pawl.

shift lever to the P

(Park) or N

(R): Reverse Position —

(Neutral) position, then depress

z This position is used when moving

the brake pedal and shift to the

the vehicle backwards. You must

desired driving range.

first stop the vehicle before shifting

z

Shifting will not be done if the

from a forward gear to Reverse, or

engine speed is high (1,000 rpm or

from Reverse to a forward gear.

more).

z This range cannot be shifted to

while driving

(although the shift

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