1987 MAZDA 626 engine coolant

INSTALLATION 1C
Accelerator Cable
Install the accelerator cable.
76G01C-235
76G01C-236
Engine Oil
Add the specified amount and type of engine oil. (Re-
fer to Section 2B)
Coolant
Close the drain plug, fill the radiator and reservoir tank
with the specified amount and type of coolant. (Re-
fer to Section 3B)
Check Engine Condition
1. Check for leaks.
2. Perform engine adjustments if necessary.
3. Perform a road test.
4. Recheck the oil and coolant levels.
1C—99

OIL
COOLER AND
OIL
FILTER BODY 2B

OIL
COOLER AND
OIL
FILTER BODY
REMOVAL
1. Disconnect the battery negative cable.
2. Drain the engine oil and coolant.
3. Remove in the sequence shown in the figure.
76G02B-012
76G02B-013
1. Idler pulley
2. Water hose
3. Connector bolt
4. Oil cooler
5. Oil filter
6. Oil filter cover
7. Oil filter body
8. Plug
9. Pressure spring
10. Plunger control
11. Relief valve spring
12. Steel ball
INSPECTION
1. Inspect the oil cooler body for cracks or corrod-
ed. If necessary replace it.
2. Check the valves for damage or scoring if neces-
sary replace it.
3. Measure free length of each valve spring. If neces-
sary replace it.
Free length
Relief valve spring: 45.5 mm (1.79 in)
Pressure spring : 54.6 mm (2.15 in)
76G02B-014
2B-7

2B
OIL
COOLER AND
OIL
FILTER BODY
76G02B-015
76G02B-016
INSTALLATION
1. Apply a coat of engine oil to the valve holes.
2. Install the relief valve spring and pressure spring.
Tightening torque:
20—29 Nm (2.0—3.0 m-kg, 14—22 ft-lb)
3. Clean the contact surfaces of the cylinder block
and oil filter body.
4. Install new O-rings and apply a coat of engine oil.
5. Install the oil filter body.
Tightening torque:
Bolt A: 8—11 N-m
(80—110 cm-kg, 69—95 in-lb)
Bolt B: 37—52 N-m
(3.8—5.3 m-kg, 27—38 ft-lb)
76G02B-017
6. Apply a coat of engine oil to the O-rings.
7. Install the oil cooler with new O-ring on the con-
nector bolt.
Tightening torque:
25—34 N-m (2.5—3.5 m-kg, 18—25 ft-lb)
8. Connect the water hoses.
9. Install the oil filter cover.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
10. Install the oil filter. (Refer to page 2B—6)
11. Install the idler pulley.
Tightening torque:
19—26 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
12. Install the Comprex supercharger drive belt and
adjust the belt deflection. (Refer to page 1C—7)
13. Add specified amount of coolant and engine oil.
14. Check for leaks.
76G02B-018
2B—8

OIL PAN 2B
OIL PAN
REMOVAL
1. Disconnect the negative battery cable.
2. Drain the engine oil and coolant.
3. Remove in the sequence shown in the figure referring to the removal note for specially marked parts.
76G02B-019
1. Sub frame
2. Gusset plate
3. Clutch housing
under cover
4. Water pipe
5. Oil pan
6. Oil strainer
7. Stiffener (RF-CX)
36—54 N-m (3.7-5.5 m-kg, 27—40 ft-lb)"
8—11 Nm (80—110 cm-kg 69—95 In-lb)
N-m (3.6—5.3 m-kg, 27—38 ft-lb)
(80—110 cm-kg, 69—95 in-lb)
76G02B-020
Removal Note
Oil pan
1. Remove the oil pan mounting bolts.
2. Insert a scraper or a suitable tool between the oil
pan and the stiffener to separate them.
3. Remove the oil pan.
4. Remove the oil strainer and stiffener from the
engine.
Caution
Do not bend the oil pan when prying loose.
76G02B-021
2B-9

2B OIL PUMP
OIL PUMP
REMOVAL
1. Disconnect the negative battery cable.
2. Drain the engine oil and coolant.
3. Remove in the sequence shown in the figure referring to the removal note for specially marked parts.
76G02B-026
6. Oil pan (Refer to page 2B—9)
7. Stiffener (RF-CX)
8. Oil strainer
9. Oil pump
Removal Note
Timing belt pulley lock bolt
Hold the timing belt pulley with the SST and remove
the lock bolt.
1. Timing belt (Refer to page 1C—11)
2. Camshaft pulley (Refer to page 1C—36)
3. Injection pump pulley (Refer to page
1C—36)
4. Seal plate
5. Timing belt pulley
2B-12

COOLING SYSTEM
(GASOLINE ENGINE)
OUTLINE 3A— 2
COOLANT FLOW CHART (DOHC) 3A— 2
COOLANT FLOW CHART (SOHC) 3A— 3
SPECIFICATIONS 3A- 4
TROUBLESHOOTING GUIDE 3A— 4
COOLANT 3A- 5
INSPECTION 3A— 5
REPLACEMENT 3A— 5
RADIATOR CAP 3A— 6
INSPECTION 3A— 6
RADIATOR 3A— 7
REMOVAL AND INSTALLATION 3A— 7
INSPECTION 3A— 7
WATER PUMP 3A— 8
REMOVAL 3A— 8
INSPECTION 3A—10
INSTALLATION 3A—10
THERMOSTAT 3A—11
REMOVAL 3A—11
INSPECTION 3A-11
INSTALLATION 3A—11
COOLING FAN 3A—12
SYSTEM CIRCUIT 3A—12
CIRCUIT INSPECTION 3A—12
FAN MOTOR 3A—13
WATER THERMO SWITCH 3A—14
76G03A-001

3A TROUBLESHOOTING GUIDE i
SPECIFICATIONS
^Engine model
Item ^__
FE-DOHC
FE 8-valve,
F8, F6...except
Middle East
.General
FE 12-valve
FE 8-valve F8, F6...only Middle East General

Cooling system Water cooled, forced circulation
Coolant capacity liters (US qt, Imp qt)
With heater 7.5 (7.9, 6.6) Coolant capacity liters (US qt, Imp qt) Without heater 7.0 (7.4, 6.2)
Water pump Type Centrifugal, timing belt driven Water pump
Water seal Unified seal
Thermostat
Type Wax, 2-stage Wax
Thermostat
Opening temperature °C(°F) Sub
.
83.5-86.5 (182-188) Main: 86.5-89.5 (188-193) 86.5-89.5 (188-193) 80.5-83.5 (177-182) Thermostat
Full-open temperature °C(°F) 100 (212) 95 (203)
Thermostat
Full-open lift
mm
(in) Sub: 1.5 (0.06) min.
Main: 8.0 (0.31) min. 8.5 (0.33) min.
Radiator
Type Corrugated
Radiator Cap valve opening pressure
kPa (kg/cm2, psi) 74-103 (0.75-1.05, 11-15)
Cooling
fan

Capacity
W

MTX 80
Cooling
fan

Capacity
W
ATX 120
Cooling
fan
Number
of
blade 4 Cooling
fan

Outer diameter
of
blade
mm
(in) MTX 320 (12.6)
Cooling
fan

Outer diameter
of
blade
mm
(in)
ATX 340 (13.4)

76G03A-003
TROUBLESHOOTING GUIDE
Problem Possible Cause Remedy Page
Overheating
Insufficient coolant Add 3A—
5

Coolant leakage Repair
—

Radiator fins clogged Clean 3A—
7

Radiator cap malfunction Replace 3A-
6

Cooling fan malfunction Repair 3A-12 Thermostat malfunction Replace 3 A-11
Water passage clogged Clean 3A—
5

Water
DumD
malfunction ReDair
or
replace 3A-
8
Corrosion
Impurities
in
coolant Replace 3A-
5
76G03A-004
3A—4

COOLANT 3A
76G03A-016
69G03A-006
COOLANT
INSPECTION
Coolant Level (Engine cold)
1. Check that the coolant level is near the radiator inlet
port.
2. Check that the coolant level in the coolant reser-
voir is between the FULL and LOW marks.
Add coolant if necessary.
Warning
a) Never remove the radiator cap while the en-
gine is hot.
b)Wrap a thick cloth around the cap when
removing it.
Coolant Quality
1. Check that there is no build-up of rust or scales
around the radiator cap or radiator filler neck.
2. Check that coolant is free from oil.
3. Replace the coolant, if necessary.
Coolant Leakage
1. Connect a tester and SST to the radiator inlet port.
2. Apply 103 kPa (1.05 kg/cm2, 15 psi) pressure
to the system.
3. Check that the pressure is held.
If not, check for coolant leakage.
Warning
When removing either the radiator cap or the
tester, loosen it slowly until the pressure in
the radiator is released, and then remove it.
86U03X-005
REPLACEMENT
1. Remove the radiator cap and loosen the drain plug.
2. Drain the coolant into a suitable container.
Warning
a) Never open the radiator cap while the en-
gine is hot.
b)Wrap a thick cloth around the cap when
loosening.
c) Use caution when draining hot coolant.
86U03X-006
3A-5