Mazda B4000 4WD Truck (2004 year). Manual — part 15

10. Tire Ply Composition and Material Used: Indicates the number

of plies or the number of layers of rubber-coated fabric in the tire
tread and sidewall. Tire manufacturers also must indicate the ply
materials in the tire and the sidewall, which include steel, nylon,
polyester, and others.

11. Maximum Load: Indicates the maximum load in kilograms and

pounds that can be carried by the tire. Refer to the tire label or the
safety certification label, located on the B-Pillar or the driver’s door,
for the correct tire pressure for your vehicle

12. Treadwear, Traction and Temperature Grades
• Treadwear: The treadwear grade is a comparative rating based on the

wear rate of the tire when tested under controlled conditions on a
specified government test course. For example, a tire graded 150
would wear one and one-half (1

⁄

) times as well on the government

course as a tire graded 100.

• Traction: The traction grades, from highest to lowest are AA, A, B,

and C. The grades represent the tire’s ability to stop on wet pavement
as measured under controlled conditions on specified government test
surfaces of asphalt and concrete. A tire marked C may have poor
traction performance.

• Temperature: The temperature grades are A (the highest), B and C,

representing the tire’s resistance to the generation of heat and its
ability to dissipate heat when tested under controlled conditions on a
specified indoor laboratory test wheel.

13. Maximum Permissible Inflation Pressure: Tire manufactures

maximum permissible pressure and/or the pressure at which the
maximum load can be carried by the tire. This pressure is normally
higher than the manufacturer’s recommended cold inflation pressure
which can be found on either the tire label or certification label
which is located on the structure by the trailing edge of the driver’s
door or the edge of the driver’s door. The cold inflation pressure
should never be set lower than the recommended pressure on the
label.

Note: You may not find this information on all tires because it is not
required by federal law.

The tire suppliers may have additional markings, notes or warnings such
as standard load, radial tubeless, etc.

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232

Additional information contained on the tire sidewall for “LT” type
tires

“LT” type tires have some additional
information than those of “P” type
tires; these differences are
described below:

1. LT: Indicates a tire, designated

by the Tire and Rim Association
(T&RA), that is intended for
service on light trucks.

2. Load Range/Load Inflation

Limits: Indicates the tires
load-carrying capabilities and its
inflation limits.

3. Maximum Load Dual kg

(lbs.) at kPa (psi) cold:
Indicates the maximum load and
tire pressure when the tire is
used as a dual; a dual is defined as when four tires are put on the
rear axle (a total of six or more tires on the vehicle).

4. Maximum Load Single kg (lbs.) at kPa (psi) cold: Indicates the

maximum load and tire pressure when the tire is used as a single; a
single is defined as when two tires (total) are put on the rear axle.

Maintenance and Specifications

233

Information on “T” type tires

T145/80D16 is an example of a tire
size.

Note: The temporary tire size for
your vehicle may be different than
this example.

1. T: Indicates a type of tire,

designated by the Tire and Rim
Association (T&RA), that is
intended for temporary service
on cars, SUVs, minivans and
light trucks.

2. 145: Indicates the nominal

width of the tire in millimeters
from sidewall edge to sidewall
edge. In general, the larger the
number, the wider the tire.

3. 80: Indicates the aspect ratio

which gives the tires ratio of height to width. Numbers of 70 or
lower indicate a short sidewall.

4. D: Indicates a “diagonal” type tire.

R: Indicates a “radial” type tire.

5. 16: Indicates the wheel or rim diameter in inches. If you change

your wheel size, you will have to purchase new tires to match the
new wheel diameter.

Location of the tire label

You will find a tire label containing tire inflation pressure by tire size and
other important information located on the B-Pillar or the driver’s door.

TIRE CARE

Improper or inadequate vehicle maintenance can also cause tires to wear
abnormally. Here are some of the important maintenance items

Tire inflation pressure

Use a tire gauge to check the tire inflation pressure at least monthly
(check the tire inflation in the spare tire every 6 months) and before
long trips. You are strongly urged to buy a reliable tire pressure gauge, as
automatic service station gauges may be inaccurate. Mazda recommends
the use of a digital or dial type tire pressure gauge rather than a stick
type of tire pressure gauge.

PARE TIRE

FLA

P .S

T14

5/80D16 105M

Maintenance and Specifications

234

Use the recommended cold inflation pressure for optimum tire
performance and wear. Under-inflation or over-inflation may cause
uneven treadwear patterns.

NOTE: If you are driving the vehicle at its maximum weight load, make
sure the tire inflation pressure is correct for the weight load on the tires.

WARNING: Under-inflation is the most common cause of tire
failures and may result in severe tire cracking, tread separation
or

(blowout(, with unexpected loss of vehicle control and

increased risk of injury. Under-inflation increases sidewall
flexing and rolling resistance, resulting in heat buildup and
internal damage to the tire. It also may result in unnecessary
tire stress, irregular wear, loss of vehicle control and accidents.
A tire can lose up to half of its air pressure and not appear to
be flat!

When weather temperature changes occur, tire inflation pressures also
change. A 10 degree temperature change causes a corresponding drop of
7 kPa (1 psi) in inflation pressure. Check your tire pressures frequently
and adjust them to the proper pressure which can be found on the tire
label or certification label.

If checking tire pressure when the tire is hot, (i.e. driven more than 1.6
km [1mile]), never “bleed” or reduce air pressure. The tires are hot from
driving and it is normal for pressures to increase above recommended
cold pressures. A hot tire at or below recommended cold inflation
pressure could be significantly under-inflated.

To check the pressure in your tire(s):

1. Make sure the tires are cool, meaning they are not hot from driving

even a mile.

Note: If you have to drive a distance to get air for your tire(s), check
and record the tire pressure first and add the appropriate air pressure
when you get to the pump. It is normal for tires to heat up and the air
pressure inside to go up as you drive. Never “bleed” or reduce air
pressure when tires are hot.

2. Remove the cap from the valve on one tire, then firmly press the tire

gauge onto the valve.

3. Add air to reach the recommended air pressure

Note: If you overfill the tire, release air by pushing on the metal stem in
the center of the valve. Then recheck the pressure with your tire gauge.

Maintenance and Specifications

235

4. Replace the valve cap.

5. Repeat this procedure for each tire, including the spare.

Note: Some spare tires require higher inflation pressure than the other
tires.

6. Visually inspect the tires to make sure there are no nails or other

objects embedded that could poke a hole in the tire and cause an air
leak.

7. Check the sidewalls to make sure there are no gouges, cuts, bulges

or other irregularities.

Tire and wheel alignment

A bad jolt from hitting a curb or pothole can cause the front end of your
vehicle to become misaligned or damage to your tires. If your vehicle
seems to pull to one side, vibrate or shake when you’re driving, the
wheels may be out of alignment. Have a qualified technician at a
reputable repair facility check the wheel alignment periodically.

Wheel misalignment in the front or the rear can cause uneven and rapid
treadwear of your tires and should be corrected by a qualified technician
at a reputable repair facility. Front wheel drive (FWD) vehicles, and
those with independent front suspension require alignment of all four
wheels.

The tire should also be balanced periodically. An unbalanced tire and
wheel assembly may result in irregular tire wear.

NOTE: When it is time to replace front tires with new ones, this is an
ideal time to perform an alignment. New tires should be balanced at the
time they are installed.

Tire rotation

Rotating your tires at the recommended interval (as indicated in the
Service Maintenance Guide that comes with your vehicle) will help your
tires wear more evenly providing better tire performance and longer tire
life. Unless otherwise specified, rotate the tires approximately every
8,000 km (5,000 miles).

Maintenance and Specifications

236

• Front Wheel Drive (FWD)

vehicles (front tires at top of
diagram)

• Rear Wheel Drive (RWD)

vehicles/Four Wheel Drive (4WD)
vehicles (front tires at top of
diagram)

Sometimes irregular tire wear can be corrected by rotating the tires.

Note: If your tires show uneven wear ask a qualified technician at a
reputable repair facility to check for and correct any wheel misalignment,
tire imbalance or mechanical problem involved before tire rotation.

Tire wear

Measure and inspect the tire tread on all your tires periodically.
Advanced and unusual tire wear can reduce the ability of tread to grip
the road in adverse (wet, snowy, etc.) conditions. Visually check your
tires for uneven wear, looking for high and low areas or unusually
smooth areas. Also check for signs of tire damage.

When the tread is worn down to 4
mm (1/16th of an inch), tires must
be replaced to prevent your vehicle
from skidding and hydroplaning.
Built-in treadwear indicators, or
“wear bars”, which look like narrow
strips of smooth rubber across the
tread will appear on the tire when
the tread is worn down to 4mm (1/16th of an inch). When you see these
“wear bars”, the tire is worn out and should be replaced.

Inspect your tires frequently for any of the following conditions and
replace them if one or more of the following conditions exist:
• Fabric showing through the tire rubber
• Bulges in the tread or sidewalls
• Cracks or cuts on the sidewalls
• Cracks in the tread groove
• Impact damage resulting from use
• Separation in the tread
• Separation in the sidewall
• Severe abrasion on the sidewall
If your vehicle has a leak in the exhaust system, a road tire or the spare
tire may be exposed to hot exhaust temperatures requiring the tire to be
replaced.

Maintenance and Specifications

238

Safety practices

Driving habits have a great deal to do with your tire mileage and safety.
• Observe posted speed limits
• Avoid fast starts, stops and turns
• Avoid potholes and objects on the road
• Do not run over curbs or hit the tire against a curb when parking
If you vehicle is stuck in snow, mud, sand, etc., do not rapidly spin the
tires; spinning the tires can tear the tire and cause an explosion. A tire
can explode in as little as three to five seconds.

WARNING: Tire explosions can cause death, personal injury or
property damage. Do not allow anyone to stand near, or directly
ahead or behind the spinning tire.

WARNING: Never spin the tires in excess of the 55 km/h (35
mph) point indicated on the speedometer.

Highway hazards

No matter how carefully you drive there’s always the possibility that you
may eventually have a flat tire on the highway. Drive slowly to the
closest safe area out of traffic. This may further damage the flat tire, but
your safety is more important.

If you feel a sudden vibration or ride disturbance while driving or you
suspect your tire or vehicle has been damaged, immediately reduce your
speed. Drive with caution until you can safely pull off the road. Stop and
inspect the tire for damage. If the tire is under-inflated or damaged,
deflate it, remove wheel and replace it with your spare tire and wheel. If
you cannot detect a cause, have the vehicle towed to the nearest repair
facility or tire dealer to have the vehicle inspected.

SNOW TIRES AND CHAINS

WARNING: Driving too fast for conditions creates the
possibility of loss of vehicle control. Driving at very high speeds
for extended periods of time may result in damage to vehicle
components.

NOTE: Snow tires must be the same size and grade as the tires you
currently have on your vehicle.

Maintenance and Specifications

239

The tires on your vehicle have all weather treads to provide traction in
rain and snow. However, in some climates, you may need to use snow
tires and chains. If you need to use snow tires and chains, it is
recommended that steel wheels are used of the same size and
specifications as those originally installed.

Follow these guidelines when using snow tires and chains:
• Do not use tire chains on aluminum wheels. Chains may chip the

wheels.

• Use only SAE Class S chains.
• Install chains securely, verifying that the chains do not touch any

wiring, brake lines or fuel lines.

Drive cautiously. If you hear the cables or chains rub or bang

Fluid

Mazda Part
Name

Application

Capacity

Transmission
fluid

Mazda
MERCON

t ATF

5-speed manual

2.65L (2.8
quarts)

Mazda
MERCON

ATF

4x2 vehicles
with automatic
and 2.3L I4
engine

9.4L (9.9
quarts)

4x2 vehicles
with automatic
and 3.0L or 4.0L
engines

9.5L (10.0
quarts)

4x4 vehicles
with automatic
and 3.0L or 4.0L

9.8L (10.3
quarts)

Engine coolant

Premium Engine
Coolant

2.3 L I4 engine
with manual
transmission

10.0L (10.5
quarts)

2.3L I4 engine
with automatic
transmission

9.7L (10.2
quarts)

3.0L V6 engine
with manual
transmission

14.3L (15.1
quarts)

3.0L V6 engine
with automatic
transmission

14.0L (14.8
quarts)

4.0L V6 engine
with manual
transmission

13.0L (13.7
quarts)

4.0L V6 engine
with automatic
transmission

12.5L (13.2
quarts)

Maintenance and Specifications

241

Fluid

Mazda Part
Name

Application

Capacity

Fuel tank

N/A

Regular cab
(Short wheel
base)

64.4L (17
gallons)

SuperCab

73.8L (19.5
gallons)

Transfer Case
Fluid

Mazda
MERCON

t ATF

4x4 Vehicles

1.2L (1.25
quarts)

Front axle
lubricant

Mazda SAE
80W-90
Premium Rear
Axle Lubricant

4x4 Vehicles

1.7L (3.6 pints)

Rear axle
lubricant

Mazda SAE
80W-90
Premium Rear
Axle Lubricant

All

2.4-2.5L (5.0-5.3
pints)

Windshield
washer fluid

Ultra-Clear
Windshield
Washer
Concentrate

All

2.6L (2.75
quarts)

Ensure the correct automatic transmission fluid is used. Transmission

fluid requirements are indicated on the dipstick or on the dipstick
handle. MERCON

t and MERCONt V are not interchangeable. DO NOT

mix MERCON

t and MERCONtV. Refer to the service maintenance

section to determine the correct service interval.

Service refill capacity is determined by filling the transmission to the

bottom of the filler hole with the vehicle on a level surface.

Indicates only approximate dry-fill capacity. Some applications may vary

based on cooler size and if equipped with an in-tank cooler. The amount
of transmission fluid and fluid level should be set by the indication on
the dipstick’s normal operating range.

Add the coolant type originally equipped in your vehicle. DO NOT MIX

different colors or types of coolant. DO NOT USE Mazda Extended Life
Engine Coolant (orange in color). Refer to Adding engine coolant, in
this chapter.

Maintenance and Specifications

242

Traction-Lok axles use 2.2–2.4L (4.75–5.0 pints) of rear axle lubricant.

Add 118 ml (4 oz.) of Additive Friction Modifier meeting Mazda
specifications for complete refill of Traction-Lok axles. Service refill
capacities are determined by filling the rear axle 6 mm to 14 mm (1/4
inch to 9/16 inch) below the bottom of the filler hole.

Brake fluid will drop slowly as the brakes wear and will rise when brake

components are replaced. Fluid levels below the MAX line that do not
trigger the brake warning light are within the normal operating range,
there is no need to add fluid. If the levels are outside the normal
operating range, the performance of your brake system could be
compromised, seek service from your local Mazda dealer immediately.

LUBRICANT SPECIFICATIONS

Item

Mazda part name or equivalent

Front axle (4X4)

SAE 80W-90 Premium Rear Axle
Lubricant

Rear axle

SAE 80W-90 Premium Rear Axle
Lubricant

Brake fluid and clutch fluid (if
equipped)

High Performance DOT 3 Motor
Vehicle Brake Fluid

Door weather strips

Silicone Lubricant

Engine coolant

Mazda Premium Engine Coolant

Engine oil 2.3L I4 and 3.0L V6 engines SAE 5W-20 Motor Oil

Engine oil 4.0L V6 engines

SAE 5W-30 Motor Oil

Hinges, door checks, latches, striker
plates, fuel filler door hinge and seat
tracks

Multi-Purpose Grease

Transmission /steering/parking brake
linkages and pivots, brake and clutch
pedal shaft, clutch pilot bearing and
input shaft spline (manual
transmission).

Premium Long-Life Grease

Power steering fluid, transfer case
fluid (4X4) and transmission fluid
(manual)

MERCON

t ATF

Automatic transmission (5R44E and
5R55E)

MERCON

tV ATF

Windshield washer fluid

Ultra-clear Windshield Washer
Concentrate

Maintenance and Specifications

243

Add 118 ml (4 oz.) of Additive Friction Modifier meeting Mazda

specifications for complete refill of Traction-Lok axles. If submerged in
water, the rear axle lubricant should be changed.

Ensure the correct automatic transmission fluid is used. Transmission

fluid requirements are indicated on the dipstick or on the dipstick
handle. MERCON

t and MERCONt V are not interchangeable. DO NOT

mix MERCON

t and MERCONt V. Refer to your service maintenance

section to determine the correct service interval.

Do not mix different types or colors of engine coolant.

Brake fluid will drop slowly as the brakes wear and will rise when brake

ENGINE SPECIFICATIONS

Engine

2.3L I4 engine 3.0L V6 engine

4.0L V6 engine

Cubic inches

138

182

245

Required fuel

87 octane

Firing order

1-3-4-2

1-4-2-5-3-6

Spark plug gap

1.04-1.19mm
(0.041-0.047
inch)

1.07-1.17mm
(0.042-0.046
inch)

1.3-1.4 mm
(0.052-0.056
inch)

Ignition system

EDIS

Compression
ratio

9.7:1

9.14:1

9.7:1

Maintenance and Specifications

244

VEHICLE DIMENSIONS

Vehicle dimensions

Regular Cab

mm (in)

SuperCab mm

(in)

(1) Overall length

4 786 (188.4)

5 168 (203.4)

(2) Overall width

1 785 (70.3)

(3) Overall height 4x2/4x4

1 651 (65.0) /

1 727 (68.0)

1 651 (65.0) /

1 727 (68.0)

(4) Wheelbase

2 831 (111.4)

3 192 (125.7)

(5) Track - Front

1 486 (58.5)

1 485 (58.5)

(5) Track - Rear

1 455 (57.3)

Maintenance and Specifications

245

Maintenance and Specifications

246

IDENTIFYING YOUR VEHICLE

Certification label

The National Highway Traffic Safety Administration Regulations require
that a Certification Label be affixed to a vehicle and prescribe where the
Certification Label may be located. The Certification Label is located on
the front door latch pillar on the driver’s side.

Vehicle identification number (VIN)

The vehicle identification number is
attached to a metal tag and is
located on the driver side
instrument panel. (Please note that
in the graphic XXXX is
representative of your vehicle
identification number.)

Engine number

The engine number (the last eight numbers of the vehicle identification
number) is stamped on the engine block, transmission, frame and
transfer case (if equipped).

XXXXXXXXXXXXXXXXX

Maintenance and Specifications

247

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Mazda B4000 4WD Truck (2004 year). Manual — part 15

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