1992 MAZDA PROTEGE radiator

E ENGINE COOLANT
SPECIFIC
GRAVITY COOLANT PROTECTION
l.OOd ’ ’ I I I I I
0, I I
-10 0 i 10 20 30 40 50 60
70 60 90
(14) (32) (50) (66) (66)(104)(122)(140)(158~176)(194)
COOLANT TEMPERATURE OC (OF)
Coolant Protection
Caution
l Do not use alcohol- or methanol-based coolant.
l Use only soft (demineralized) water in the coolant
mixture.
1. Measure the coolant temperature and specific gravity with
a thermometer and a hydrometer.
2. Determine the coolant protection by referring to the graph
shown.
If the coolant protection is not proper, add water or coolant.
Antifreeze solution mixture percentage
~1
05UOEX-010
REPLACEMENT
Warning
l Never open the radiator cap while the engine is hot.
l Wrap a thick cloth around the cap when loosening.
. Use caution when draining hot coolant.
Caution ..-
l Do not use alcohol- or methanol-based coolant.
l Use only soft (demineralized) water in the coolant
mixture.
1. Remove the radiator cap and loosen the drain plug.
2. Drain the coolant into a suitable container.
3. Flush the cooling system with water until all traces of color
are gone; then let the system drain completely.
4. Install the drain plug.
5. Fill with the proper amount and mixture of ethylene glycol
based coolant by referring to the table above.
Coolant capacity
MTX: 5.0 liters (5.3 US qt, 4.4 Imp qt)
ATX: 6.0 liters (6.3 US qt, 5.3 Imp qt)
6. Run the engine with the radiator cap removed until the up-
per radiator hose is hot.
7. With the engine idling, add coolant to the radiator until it
reaches the bottom of the filler neck.
8. Install the radiator cap.
03UOEX-010 -
E-6

RADIATOR CAP E
RADIATOR CAP
PREPARATION
I I 05UOEX-014
INSPECTION
Radiator Cap Valve
1. Remove foreign material (such as water residue) from be-
tween the radiator cap valve and the valve seat.
2. Attach the radiator cap to a radiator cap tester (commer-
cially available) with the
SST. Apply pressure gradually to
74-103 kPa (0.75-l .05 kg/cm , 11-15 PSI).
3. Wait about 10 seconds. Verify that the pressure has not
decreased.
Negative Pressure Valve
1. Pull the negative pressure valve to open it. Verify that it
closes completely when released.
2. Check for damage on the contact surfaces and for cracked
or deformed seal packing.
3. Replace the radiator cap if necessary.
E-7

E RADIATOR
RADIATOR
REMOVAL / INSTALLATION
Caution
l Position the hose clamp in the original location on the hose, and squeeze the clamp lightly
with large pliers to ensure a good fit.
1. Disconnect the negative battery cable.
2. Drain the engine coolant.
3. Remove in the order shown in the figure.
4. Install in the reverse order of removal.
7.8-11 N.m (80-110 cm-kg, 69-95 in-lb)
-...__--- --- i
771 InFu.nnc; cvyILII ..,.,..
6. Oil cooler hose (ATX)
7. Radiator bracket
8. Radiator
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page E-9
9. Cooling fan and radiator cowling assembly 1. Resonance chamber
2. Cooling fan connector
3. Radiator thermoswitch connector (BP ATX)
4. Coolant reservoir hose
5. Radiator hose i
Y’
E-8

RADIATOR, THERMOSTAT t
THERMOSTAT
REMOVAL / INSTALLATION INSPECTION
Check for the following and repair or replace as necessary.
1. Cracks, damage, and water leakage.
2. Bent fins (repair with a screwdriver).
3. Distorted or bent radiator inlet.
Steps After Installation
1. Fill the radiator with the specified amount and type of en-
gine coolant. (Refer to page E-6.)
2. Connect the negative battery cable.
3. Start the engine and check for leaks.
Caution
l Position the hose clamp in the original location on the hose, and squeeze the clamp lightly
with large pliers to ensure a good fit.
1. Disconnect the negative battery cable.
2. Drain the engine coolant.
3. Remove in the order shown in the figure.
4. Install in the reverse order of removal.
SOHC AND BP SOHC : \,
19-26 N&6.9-2.6 m-kg, 14-19 ft-lb) 19-26 N-m (l.S--2&m-kg, 14-Wft-lb)
23UOEX-006
1. Water thermoswitch connector
2. Radiator hose upper
3. Thermostat cover
4. Thermostat gasket 5. Thermostat
Inspection . . . . .., .., ,.. ,.. . . . ,.. . . . . . . . . . . . . . . . . . . . . . . below
Installation Note ..,....................... page E-10
Installation Note . . . . . . . . . . . . . . . . . . . . . . . . . .
page E-10
INSPECTION
1. Visually check that the thermostat valve is airtight.
2. Place the thermostat and a thermometer in water.
3. Heat the water and check the following:
Initial-opening temperature
Main: 86.5-89.5°C (188-193OF)
Sub : 83.5-86.5OC (182-188OF)
Full-open temperature: 1 OOOC (212OF)
Full-open lift
OSUOEX-019
Main: 8.0mm (0.31 In) min.
Sub : 1.5mm (0.06 in) min.
E-9

E THERMOSTAT
Installation Note JIGGLE PIN Thermostat
6 8 8
1. Install the thermostat into the cylinder head with the jiggle
pin at the top. ..__
Thermostat gasket
1. Install a new gasket with the seal print side facing the cylin-
der head.
03UOEX-014
Steps After Installation
1. Fill the radiator with the specified amount and type of engine coolant. (Refer to page E-6.)
2. Connect the negative battery cable,
3. Start the engine and check for leaks.
03UOEX-015
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E-IO

BP DOHC
L 7.8-11 N-m (60-110 cm-kg, 69-95 in-lb)
E WATER PUMP
157-167
I
(W-17, 116-123) I
I
/
I
I
I
---N-w------
---------------
----_---_
-I
N.m (m-kg, ft-lb) 1
^^, *--., ^^^
1. Timing belt
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 5. Water pump assembly
B2
2. Water inlet pipe and gasket Inspect for cracks, damaged mounting
3. Water bypass pipe and O-ring surface, bearing condition, and leakage
4. Oil dip stick pipe bracket 6. Water pump gasket
Steps After Installation
1. Fill the radiator with the specified amount and type of engine coolant. (Refer to page E-6.)
2. Connect the negative battery cable,
3. Start the engine and check for leaks.
03UOEX-018
E-12

ELECTRIC COOLING FAN SYSTEM E
ELECTRIC COOLING FAN SYSTEM
SYSTEM CIRCUIT
I
SINGLE-SPEED TYPE
WITH A/C
r __________ -------- ------..---- i
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r,
, II
I 1
P ’
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:”
IGZ
b CONNECTOR
WATER
THERMOSWITCH
ABOVE 97% (207OF): ON WO-SPEED TYPE
WITH AK
r--------
l
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L-
No.2
FAN
RELAY
ADDITIONAL
FAN
MOTOR - -_-_---
A-- 1- A/C SWITCH
_________ - -.--- -- _ .- .- - LDIAGNOSIS
CONNECTOR
WATER
THERMOSWITCH
ELAY ABOVE 97% (207“F): ON
RADIATOR SWITCH
ABOVE 105-Z (221°F): ON
03UOEX-019
E-13

E ELECTRIC COOLING FAN SYSTEM, FAN MOTOR
03UOEX-02
I
1
I
‘4
.

2
.:
)
SYSTEM INSPECTION
1. Jump across the fan test (TFA) terminal and the ground
(GND) terminal of the diagnosis connector.
2. Turn the ignition switch ON and verify that the fan operates.
If the fan does not operate, inspect the cooling fan system
components and wire harness. -.-
3. Remove the radiator cap and place a thermometer in the
radiator filler neck.
4. Start the engine.
5. Verify that the fan operates when the coolant temperature
reaches approx. 97OC (207OF).
If it does, check the water thermoswitch.
(Refer to page E-16.)
FAN MOTOR
INSPECTION
Single-Speed Type
1. Check that the battery is fully charged.
2. Disconnect the fan motor connector.
3. Connect the battery and an ammeter to the fan motor con-
nectar.
4. Verify that current is as specified.
Current (A)
B6 SOHC
BP SOHC
BP DOHC MTX ATX
6.6 f 1 6.6 f 1
6.6 f 1 -
6.6 f 1 -
5. If current is not within specification and/or the fan does not
turn smoothly, replace the fan motor.
Two-Speed Type
1. Check that the battery is fully charged.
2. Disconnect the fan motor connector.
3. Connect the battery and an ammeter to the fan motor con-
nectors for low-speed inspection. 4. Verify that the fan motor operates smoothly at the standard
current.
Current (A): 8.8 + 10% MAX

I
03UOEX-022
E-14