Mazda Protege 5. Manual — part 134
LUBRICATION
01–11–16
Pressure Spring Inspection
ZM
1. Measure the free length of the pressure spring.
•
Replace the pressure spring if necessary.
Free length
45.94 mm {1.809 in}
FS
1. Apply pressing force to the pressure spring and
check the spring height.
•
Replace the plunger spring if necessary.
Pressing force
97.7—107.4 N {9.96—10.96 kgf, 21.92—24.11
lbf}
Standard height
33.50 mm {1.319 in}
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COOLING SYSTEM
01–12–1
01–12
01–12
COOLING SYSTEM
COOLING SYSTEM LOCATION INDEX. 01–12–1
COOLING SYSTEM SERVICE
WARNINGS . . . . . . . . . . . . . . . . . . . . . . 01–12–2
ENGINE COOLANT LEVEL
INSPECTION . . . . . . . . . . . . . . . . . . . . . 01–12–2
ENGINE COOLANT PROTECTION
INSPECTION . . . . . . . . . . . . . . . . . . . . . 01–12–2
ENGINE COOLANT REPLACEMENT . . 01–12–3
ENGINE COOLANT LEAKAGE
INSPECTION . . . . . . . . . . . . . . . . . . . . . 01–12–4
RADIATOR CAP INSPECTION. . . . . . . . 01–12–4
RADIATOR REMOVAL/INSTALLATION 01–12–4
THERMOSTAT REMOVAL/
INSTALLATION . . . . . . . . . . . . . . . . . . . 01–12–5
Thermostat Installation Note . . . . . . . . . 01–12–6
Thermostat Cover Gasket Installation
Note. . . . . . . . . . . . . . . . . . . . . . . . . . . 01–12–7
THERMOSTAT INSPECTION . . . . . . . . . 01–12–7
WATER PUMP REMOVAL/
INSTALLATION . . . . . . . . . . . . . . . . . . . 01–12–8
Water Pump Installation Note . . . . . . . . 01–12–9
COOLING FAN MOTOR INSPECTION . . 01–12–9
COOLING FAN MOTOR REMOVAL/
INSTALLATION . . . . . . . . . . . . . . . . . . . 01–12–9
End of Toc
COOLING SYSTEM LOCATION INDEX
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.
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Z3U0112W100
1
Radiator cap
(See 01–12–4 RADIATOR CAP INSPECTION)
2
Radiator
(See 01–12–4 RADIATOR REMOVAL/
INSTALLATION)
3
Thermostat
(See 01–12–5 THERMOSTAT REMOVAL/
INSTALLATION)
(See 01–12–7 THERMOSTAT INSPECTION)
4
Water pump
(See 01–12–8 WATER PUMP REMOVAL/
INSTALLATION)
5
Cooling fan motor
(See 01–12–9 COOLING FAN MOTOR
INSPECTION)
(See 01–12–9 COOLING FAN MOTOR REMOVAL/
INSTALLATION)
6
Cooling fan relay
(See 09–21–5 RELAY INSPECTION)
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COOLING SYSTEM
01–12–2
COOLING SYSTEM SERVICE WARNINGS
A3U011201004W02
Warning
••••
Never remove the radiator cap or the coolant filler cap. Do not loosen the radiator drain plug while
the engine is running, or when the engine and radiator are hot. Scalding coolant and steam may
shoot out and cause serious injury. It may also damage the engine and cooling system.
••••
Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap.
Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while
the pressure escapes.
••••
When you are sure all the pressure is gone, press down on the cap while still using the cloth, turn
it, and remove it.
••••
Hot engines and engine coolant can cause severe burns. Turn off the engine and wait until it and
the coolant are cool before draining the engine coolant.
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ENGINE COOLANT LEVEL INSPECTION
A3U011215001W01
1. Remove the radiator cap.
2. Verify that the coolant level is near the radiator filler neck.
3. Verify that the coolant level in the coolant reservoir is between the FULL and LOW marks.
•
Add coolant if necessary.
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ENGINE COOLANT PROTECTION INSPECTION
A3U011215001W02
1. Measure the coolant temperature and specific gravity with a thermometer and a hydrometer.
Caution
••••
The engine has aluminum parts that can be damaged by alcohol or methanol antifreeze. Do not
use alcohol or methanol in the cooling system. Use only ethylene-glycol-based coolant.
••••
Use only soft (demineralized) water in the coolant mixture. Water that contains minerals will cut
down on the coolant's effectiveness.
2. Determine the coolant protection by referring to
the graph shown.
•
If the coolant protection is not correct, add
water or coolant.
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COOLING SYSTEM
01–12–3
01–12
ENGINE COOLANT REPLACEMENT
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1. Drain the coolant in the coolant reservoir.
2. Remove the radiator cap and loosen the radiator
drain plug.
3. Drain the coolant into a container.
4. Flush the cooling system with water until all
traces of color are gone.
5. Let the system drain completely.
6. Tighten the radiator drain plug.
Caution
••••
The engine has aluminum parts that can
be damaged by alcohol or methanol
antifreeze. Do not use alcohol or
methanol in the cooling system. Use only
ethylene-glycol-based coolant.
••••
Use only soft (demineralized) water in the
coolant mixture. Water that contains
minerals will cut down on the coolant's
effectiveness.
••••
Engine coolant will damage paint. Rinse
it off quickly.
7. Referring to the following chart, select proper
volume percentage of the water and coolant.
Slowly pour the coolant into the radiator up to the
coolant filler port.
Filling pace
1.0 L {1.1 US qt, 0.9 Imp qt}/min. [max]
Antifreeze solution mixture percentage
8. Pour coolant into the reservoir up to the FULL mark on the coolant reservoir.
9. Fully install the radiator cap.
Caution
••••
If the coolant temperature becomes too high, stop the engine to prevent it from overheating.
10. Start the engine and let it idle for approx. 10 min.
11. After engine warms up, perform the following steps:
(1) Run the engine at 2,500 rpm for 5 min.
(2) Run the engine at 3,000 rpm for 5 s: then return to idling. Repeat this several times.
12. Stop the engine and wait until it is cool.
13. Inspect the coolant level. If it is low, repeat Step 7—12.
14. Verify there is no leakage.
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Coolant protection
Volume
percentage
Gravity at
20
°°°°
C {68
°°°°
F}
Water
Coolant
Above –16
°
C {4
°
F}
65
35
1.054
Above –26
°
C {–15
°
F}
55
45
1.066
Above –40
°
C {–40
°
F}
45
55
1.078
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