Isuzu Q Series User manual

FOREWORD
We would like to take this opportunity to thank you for choosing an Isuzu product and assure you of our
continuing interest in your motoring pleasure and satisfaction.
This manual has been prepared to acquaint you with the operation and maintenance of your Isuzu vehicle, and
to provide important safety information. We urge you to read it carefully and follow the recommendations to help
assure the most enjoyable and trouble-free operation of your vehicle.
When it comes to service, remember that your Isuzu dealer knows your vehicle best and is interested in your
complete satisfaction.
This manual should be considered a permanent part of the vehicle, and must remain with the vehicle at time of
resale.
Cautionary statements
1. Statements concerning the possibility of personal injury are titled "WARNING" and appear within a
shaded block.
2. Statements concerning the possibility of mechanical damage to the vehicle are titled "CAUTION".
3. Other information which needs to be emphasized but which does not concern the possibility of
personal injury or mechanical damage is titled "NOTE".
4. This symbol means "Do not", "Do not do this" or "Do not let this happen".
All information, illustrations and specifications contained in this manual are based on the latest product
information available at the time of publication. The right is reserved to make changes at any time
without notice.
Due to differences in vehicle specifications, the illustration used for description may not match your
vehicle.
Isuzu Motors Limited
Tokyo, Japan
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ABBREVIATIONS USED IN THIS MANUAL
V................................................ Variation (optional on some
models).
OPT ................................................ Optional equipment.
RHD ................................................ Right-hand drive.
LHD ................................................ Left-hand drive.
4JB ................................................ 4JB1, 4JB1-TC engine
models only.
4JB1 ............................................. 4JB1 engine model only.
4JB1-TC .......................................... 4JB1-TC engine model only.
4JH ................................................ 4JH1-TC engine models
only.
TRB ................................................ Turbo charged engine model
only.
All rights reserved. This material may not be reproduced or
copied, in whole or in part, without permission in writing from
Isuzu Motors Limited.
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1.
2.
3.
4.
5.
6.
TABLE OF CONTENTS
IMPORTANT INFORMATION
CONTROLS AND INSTRUMENTS
BEFORE DRIVING YOUR VEHICLE
DRIVING
SERVICE AND MAINTENANCE
MAIN DATA AND SPECIFICATIONS
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IMPORTANT INFORMATION
- 1–1 -
IMPORTANT INFORMATION
• Location of chassis and
engine number ............................. 1–1
• Correct cargo loading.................. 1–2
• Operation of new vehicle............. 1–6
• Operation and care of vehicle ..... 1–7
• Maintenance ................................. 1–7
• Before driving............................... 1–8
• When the vehicle runs ............... 1–12
• When stopping / parking
the vehicle................................... 1–17
• To avoid damage to
the vehicle................................... 1–19
The following information is important for
proper care and economical operation of
your Isuzu vehicle and should be
thoroughly understood before operating it
into service.
LOCATION OF CHASSIS AND
ENGINE NUMBER
It is advisable to record the chassis and
engine number as they are required when
contacting your Isuzu dealer for repair
services.
Chassis number:
The chassis number is stamped on the
front right-hand side face of the chassis
side member.
Engine number:
The engine number is stamped on the left
side of the cylinder body.
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IMPORTANT INFORMATION
- 1–2 -
Vehicle identification plate:
The vehicle identification plate is attached
to the interior side of the cab side panel
on the right side.
CORRECT CARGO LOADING
Overloading and uneven loading are very
dangerous. Please use the correct loading
based on the standard maximum load.
Wrong loading may cause unstable
operation, overload on one of the axles,
and an excessive load on the wheel bolts.
This is a major factor of the accident that
a wheel comes off due to wheel bolt
breakage. Also, the cargo bed and frame
will be damaged.
WARNING
Overloading not only shortens the
service life of your vehicle, but also
creates serious potential safety
hazards.
The weight of the payload must be
limited within the GVM rating and
distributed over the front and rear
axles so as not to exceed the axle
capacities.
Wrong loading may cause unstable
operation, overload on one of the
axles, and an excessive load on the
wheel bolts. This is a major factor of
the accident that a wheel comes off
due to wheel bolt breakage. Also,
the cargo bed and frame will be
damaged.
Refer to "MAIN DATA AND
SPECIFICATIONS" for GVM and Axle
capacities.
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IMPORTANT INFORMATION
- 1–3 -
Never apply unnecessarily large force.
Fix the load securely using a load cover or
rope to prevent it from falling, but do not
apply unnecessarily large force as this
could break or otherwise damage the side
drop, tail gate and guard frame, etc.
When loading with a heavy cargo:
In case of heavyweight cargo, use pads
under the cargo to prevent it from moving
and fix it firmly with wire rope, etc. Do not
fix cargo using excessive force.
Keep flammable materials away from
the gap between the cab and the guard
frame.
Make certain the load cover or rope ends
are tucked in tight and not hanging free in
the gap behind the cab, as the engine
heat may cause a fire while driving.
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IMPORTANT INFORMATION
- 1–4 -
Loading farming equipment
CAUTION
The frame may become deformed
when farming equipment is loaded
from the rear of the cargo bed. In
addition, the frame may become
deformed even when loading farming
equipment that has a weight under
the maximum loading capacity.
NOTE
When loading farming equipment, a
device for securing the cargo bed is
required. Use a car carrier or attach
a rear support stand. If you have any
questions, contact an Isuzu dealer.
Loading methods NO GOOD
GOOD
Do not leave a large space between
loads.
Distribute the load evenly.
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IMPORTANT INFORMATION
- 1–5 -
NO GOOD
GOOD
When using supports under a load,
distribute them evenly.
NO GOOD
GOOD
Place supports underneath when carrying
an extra-long item. Do not support it with
the guard frame or the rear end of the
bed.
NO GOOD
GOOD
Secure the load with a load cover and
rope to prevent it from falling. Tuck the
fixing material with rubber bands or other
appropriate material.
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IMPORTANT INFORMATION
- 1–6 -
NO GOOD GOOD
Avoid high loading.
Minimize the height to prevent the vehicle
from rolling due to crosswind or when
turning.
OPERATION OF NEW VEHICLE
The subsequent performance and the
service life of your vehicle are under the
direct influence of the care and treatment
that your vehicle will receive during the
initial break-in period. It is therefore
always recommended that during the
initial 1,000 km (600 miles) break-in
period, the following few simple
precautions are carefully observed.
1. It is recommended that your speed
during initial 1,000 km (600 miles) be
confined to the following:
Without tachometer:
The shift speed label is attached to the
inside of the driver's door.
Shift each gear at 10 km/h (6 mph) lower
than the recommended shift speed.
With tachometer:
The shift speed label is not attached.
It is recommended that engine speed is
restricted to the following:
4JB1, 4JB1-TC : 2,800rpm
4JH1-TC : 4,000rpm
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IMPORTANT INFORMATION
- 1–7 -
2. Avoid engine racing, abrupt starting
and needless hard stops by popping
the clutch.
3. Always let the engine idle until it
becomes thoroughly warmed up.
OPERATION AND CARE OF
VEHICLE
Every component and system of your
vehicle should be checked with the aid of
"CONTROLS AND INSTRUMENTS" and
"DRIVING" sections in this manual.
MAINTENANCE
In order to maintain safe and dependable
vehicle operation, inspection and
adjustments should be performed as
outlined in the "SERVICE AND
MAINTENANCE" section. Your Isuzu
dealer is trained to perform regular
maintenance operation on your vehicle.
WARNING
When performing work on the
electrical system, begin by turning
the starter switch to the "LOCK"
position, wait at least 1 minute, and
then disconnect the negative cable
WARNING (Continued)
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IMPORTANT INFORMATION
- 1–8 -
WARNING (Continued)
from the negative terminal on
battery. If the negative cable is
disconnected within 1 minute, the
engine control module may
malfunction.
BEFORE DRIVING
Do you use the specified fuel? (low
sulfur diesel fuel only)
CAUTION
Always use diesel fuel.
Use of low quality fuel may adversely
affect to the engine parts, and cause
failure.
Use of other than specified fuel may
adversely affect to the engine or
emission control system and cause
failure. For models conforming to Euro
IV emission standards, be sure to use
low-sulfur diesel fuel (containing
sulfur of 50 ppm or lower) or extra-
low-sulfur diesel fuel (containing
sulfur of 10 ppm or lower).
NOTE
The specification of fuel varies
depending on seasons and regions.
Do not bring fuel containers, spray
cans, etc. into the vehicle
WARNING
It is dangerous that a fire or
explosion may occur when the
containers catch fire or get
damaged.
MAP
Clear the driver’s footwell
WARNING
It is dangerous that you cannot
operate the brake pedal when an
object in the driver’s footwell moves
behind the pedal. To ensure
operation of each pedal, place the
floor mat properly.
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IMPORTANT INFORMATION
- 1–9 -
Do not keep the engine running
indoors
WARNING
In a place with poor ventilation,
carbon monoxide poisoning may
occur. Starting or warming-up the
engine should be performed in a
well-ventilated place.
Check around the rear of the vehicle
before starting the engine
WARNING
Check for flammable materials
around the rear of the vehicle
before starting the engine. These
materials may cause a fire.
Especially, keep the vehicle more
than 30 cm (12 inch) away from any
wood. Otherwise, it is very
dangerous that this may cause
deformation, discoloration or a fire.
Choose your footwear suitable for
driving
CAUTION
Choose footwear that ensures proper
operation of pedals when driving the
vehicle. Use of footwear unsuitable for
driving may cause an accident.
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IMPORTANT INFORMATION
- 1–10 -
Grip
Step
Getting in and out of the vehicle
Carefully check that the area around the
vehicle is safe, hold the grip, and place
your foot on the step when getting in or
out of the vehicle.
WARNING
• When getting in or out of the
vehicle, make sure you use the
grip and step to always support
yourself from at least 3 points.
It is very dangerous to stand on
the tire or wheel when getting in
or out of the vehicle.
Furthermore, do not try to jump in
or out of the vehicle, as doing so
could cause unexpected
accidents or injuries.
• Getting in or out of the vehicle
with oily or greasy hands or
shoes could cause you to slip.
Always thoroughly clean grease
etc. from your hands and shoes
before getting in or out of the
vehicle.
• Rain and snow can cause the
step to become very slippery.
Therefore, always remove snow
and ice from your shoes and the
step, and be careful not to slip
when getting in and out of the
vehicle.
• Exercise caution when opening
or closing doors, as strong winds
or steep slopes may cause doors
to open or close suddenly.
CAUTION
Do not hold parts other than the grip
when getting in or out of the vehicle.
Doing so may cause damage to the
vehicle or injuries to yourself or
others.
Starting engine on the vehicle
CAUTION
• Before starting the engine on the
vehicle, be seated in the driver’s
seat and make sure the parking
brake is pulled securely. Also make
sure the change lever is in "N"
position while depressing the clutch
pedal, and then start the engine.
• If you start the engine through the
window (not seated in the driver’s
seat), it is dangerous that the
vehicle may start to move when the
change lever is in other than "N"
position. Never do that.
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IMPORTANT INFORMATION
- 1–11 -
B
A
a
b
C
c
Adjusting the seat to your proper
driving posture and wearing the seat
belt are fundamental to safety drive
CAUTION
Before driving, be sure to adjust the
positions of the seats and mirrors, and
take a proper driving posture. Then
shake the seat lightly to make sure it is
securely fixed. Wear the seat belt
properly, not only drivers but also
passengers.
Advice on seat adjustment
a Adjust the seat so that you can move the steering wheel easily with your arms bent
slightly.
b Keep your shoulders on the seat-back.
c You can depress each pedal fully.
Precautions for wearing seat belts Why?
A Be sure to wear the lap belt as low on
the hips as possible.
Because it is dangerous in case that
each part of body may be pressured by
the belt.
B Wear the shoulder belt so that it does
rest snugly across the shoulder, but
does not contact the neck, chin or face.
C Make sure that the seat belt does not
have twist.
Because this will maximize its
effectiveness.
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IMPORTANT INFORMATION
- 1–12 -
LOCK
WHEN THE VEHICLE RUNS
Do not turn off the engine while the
vehicle is running
CAUTION
• The engine may get damaged.
• The effectiveness of the brake will
worsen.
• Turning the steering wheel will be
heavy since the power steering
system is disabled.
• It is dangerous that each warning
light or indicator light does not
work.
• If the starter switch is turned to the
"LOCK" position, the key may be
removed. This locks the steering
wheel, therefore it is dangerous that
you cannot turn the steering wheel.
Pulling away in a manual transmission
model
CAUTION
Pull away gently in first gear. Pulling
away in a high gear, pulling away
rapidly or slipping the clutch for a long
time while pulling away would damage
the clutch.
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IMPORTANT INFORMATION
- 1–13 -
Action to be taken when tires get flat
or burst
Do not panic. Hold the steering wheel
firmly and apply brake gradually (It is
dangerous to apply the brake suddenly.
This may cause loss of vehicle’s control.)
to slow down the vehicle. Park it in a safe
place, and replace the tire.
Braking performance after passing
puddles and washing the vehicle
After passing or parking at puddles or
washing the vehicle, depress the brake
pedal lightly to check the braking
performance. If the braking performance
weakens, dry the brake system by
depressing the brake pedal lightly several
times until the performance recovers,
while driving the vehicle at the slow
speed, paying attention to other vehicles
ahead of and behind you.
CAUTION
When inevitably driving on flooded
road, it is advisable to run slowly at a
constant speed while confirming the
depth of water. Otherwise, water may
intrude in the engine cylinder and
cause damage on the engine (due to
water hammer phenomenon). It is also
advisable to slow down your vehicle
and drive with care. After driving on
flooded roads, it is recommended to
immediately take the vehicle to the
nearest Isuzu dealer to have the
engine, electric parts, transmission,
differential, and clutch parts checked
for water intrusion. Also, have oil
added or lubrication performed in
areas where necessary.
If water-ingress to the clutch bearing
has occurred, or if such water-ingress
is suspected, replace the clutch
release bearing.
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IMPORTANT INFORMATION
- 1–14 -
Park the vehicle in a safe place firstly if
the warning light comes on
Do not continue to drive disregarding the
lighting (blinking) of the warning light. Be
sure to take action for lighting or blinking
lights, referring to the instruction of how to
see the meters, the warning lights, and
the indicator lights.
Refer to the "CONTROLS AND
INSTRUMENTS" section.
Proper shifting
Downshifting has two main purposes.
• To provide the engine brake while
going down a steep or long slope.
• To improve quick response and fuel
economy while going up a slope.
Precautions for downshifting
• Overrunning leads to damage to the
engine. Downshifting must be
performed within the appropriate
speed range of each gear.
• Even when the vehicle runs on other
than a downhill slope, downshifting
must be performed within the
appropriate speed range of each gear.
• On the new vehicle (less than about
1000 km (600 miles) of mileage),
downshifting should be performed at
around 10 km/h below the appropriate
speed range.
When going up a slope
• Downshift early to avoid load on the
engine.
When going down a slope
• When going down a slope, normally
use the same gear that was used for
going up that slope. However, drive the
vehicle at the appropriate speed so
that the tachometer does not indicate
the red zone to prevent the engine
from overrunning (exceeding the
engine speed limit).
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IMPORTANT INFORMATION
- 1–15 -
Red
zone
Drive the vehicle at the appropriate speed
so that the tachometer does not indicate
the red zone.
NOTE
Engine brake is a braking force which
is applied when the accelerator pedal
is released while the vehicle is
running. The lower gears apply the
stronger engine brake force.
When going down a long slope
• When going down a long slope, use
exhaust brake (if equipped) and engine
brake at the same time. Depressing the
foot brake for a long time may lead to
brake fade or vapor lock, causing poor
brake force.
• Use of exhaust brake (if equipped) and
engine brake provided by the low gears
are more effective than use of foot
brake because they reduce the load on
the foot brake and apply more braking
force. However, be careful not to
overrun the engine.
NOTE
Vapor lock
Frequent use of the foot brake makes
the brake system overheat, and the
brake fluid boils due to this heat, then
air bubbles form in the brake hose. In
this case, the hydraulic pressure is not
transmitted to the wheel cylinders
though the brake is depressed
because only air bubbles are
compressed, resulting in a sudden
drop in the braking force.
Brake fade
Frequent use of the foot brake makes
the brake system overheat, and the
friction on the friction surface of brake
system reduces due to this heat,
resulting in a drop in the braking force.
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IMPORTANT INFORMATION
- 1–16 -
Driving on a wet or icy road surface
such as due to rain, freeze and snow
• Avoid sudden steering and sudden
braking, and slow down the vehicle by
using exhaust brake (if equipped) and
engine brake in combination.
(However, sudden use of exhaust
brake (if equipped) or engine brake
may cause the vehicle to skid.) Drive
moderately especially in areas where
puddles are likely to form, as
hydroplaning may occur.
• If you must drive through a water-
covered road, be sure to check the
depth and drive at a constant slow
speed. Otherwise, water may get
inside the engine cylinder and the
engine may get damaged (water
hammer). Drive carefully at a moderate
speed.
NOTE
Hydroplaning
When a vehicle runs on a wet road at a
high speed, a film of water forms
between the tires and the road surface.
The tires will float on water and lose
their grips, resulting in loss of steering
and braking.
Be careful with crosswinds
When crosswinds blow and the vehicle
sways, hold the steering wheel firmly, and
slow down to a moderate speed to get
the vehicle back to stable condition. Be
careful that strong crosswinds may blow
in the following situations.
• When passing through an exit of
tunnel, bridge, embankment or
dugway.
• When a large truck passes by your
vehicle.
• When your vehicle passes by a large
truck.
When high impact on the underbody
occurs
Immediately park the vehicle in a safe
place so that it does not obstruct traffic,
and check for brake fluid, fuel leakage or
damage to each part. If any damage or
fault is found, have your vehicle inspected
or repaired at Isuzu dealer as soon as
possible.
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