1987 MAZDA 626 ECU

ASSEMBLY (TIMING BELT) 1 C
63G01D-431
76G01C-191
76G01C-192
Timing Belt Tensioner
1. Install the tensioner spring onto the tensioner.
2. Install the tensioner assembly.
3. Temporarily secure it so the tensioner is shifted
outward.
Timing Belt
1. Return the crankshaft about 45° to the timing mark
on the oil pump housing.
2. Check that the timing marks of the camshaft pul-
ley and the injection pump pulley align with the tim-
ing marks on the seal plate.
3. Install the timing belt in the sequence shown in the
figure.
Caution
The timing belt must be reinstalled in the same
direction of rotation for continued durability.

76G01C-200

1C—83

1C INSTALLATION
ENGINE INSTALLATION
Install the engine and transaxle assembly.
Warning: Be sure the vehicle is securely supported.
Torque Specifications
67-93 N-m {6.6—9.5 m-kg, 49—69 ft-Sb)
8—11 Nm (80—110 cm-kg,„ 69—95 in-lb)
85—117 N m (8.7—11.9 m-kg, 63—G6 ft-lb) S—11 N-m (80—110em-kg, 69—95 In-lb)
5—7 N-m (50—70 cm-kg, 43—61 in-lb)
67—93 N-m (6,8—9,5 m-kg, 49—69 ft-lb)
55—80 N-m (5.6—8.2 m-kg, 41—59 ft-lb)
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
43—62 N-m (4.3—6.3 m-kg, 14—22 ft-lb)
7—10 N-m (70—100 cm-kg, 60—86 in-lb)
37—52 N-m (3.6—5.3 m-kg, 27—38 ft-lb)
34—49 N-m (3.5—5.0 m-kg, 25—36 ft-lb)
31—40 N-m 9 (3.2-4.1 m-kg, 23—30 ft-lb)
'8—11 N-m (80—110 cm-kg, 69—95 in-lb)
19—26 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
29—44 N-m (3.0—4.5 m-kg, 22—33 ft-lb)
43—54 N-m (4.4—5.5 m-kg, 32—40 ft-lb)
-IS* 88—118 N-m ^-(9.0—12.0 m-kg, 65—87 ft-lb) 8—11 N-m (80—110 cm-kg, 69—95 In-lb)
86U01X-180
1C—92

1C INSTALLATION
Driveshaft
1. Apply grease to the end of the driveshaft.
2. Install the driveshaft and a new clip.
Caution
a) When installing the driveshaft, be careful
not to damage the oil seal.
b) After installation, pull the front hub outward
to confirm that the driveshaft is securely
held by the clip.
Water Hose
Connect the water hose.
76G01C-220
Lower Arm
Install the lower arm ball-joint to the knuckle; then tight-
en the lock nut.
Tightening torque:
43—54 N-m (4.4—5.5 m-kg, 32—40 ft-lb)
86U01X-185
Tie-Rod End
1. Install the tie-rod end to the knuckle.
Tightening torque:
29—44 N-m (3.0—4.5 m-kg, 22—33 ft-lb)
2. Install the cotter pin.
86U01X-186
76G01C-255
Stabilizer Control Rod
Install and adjust the front stabilizer control rods.
Dimension A: 20.1 mm (0.79 in)
Tightening torque: 16—23 N-m (1.6—2.3 m-kg, 12—17 ft-lb)
Front Wheel
Install the front wheel.
Tightening torque:
88—118 N-m (9.0—12.0 m-kg, 65—87 ft-lb)
1C—94

INSTALLATION 1C
76G01C-227
P/S Oil Pump
1. Install the P/S oil pump.
Tightening torque:
37—52 Nm (3.8—5.3 m-kg, 27—38 ft-lb)
2. Install the P/S oil pump pully. (Refer to section 10)
Tightening torque:
55—59 Nm (5.6—6.0 m-kg, 41—43 ft-lb)
3. Set the pipe bracket in position.
Tightening torque:
8—11 Nm (80—110 cm-kg, 69—95 in-lb)
4. Install the drive belt and adjust the belt deflection.
(Refer to page 1C—7)
5. Install the drive belt cover.
Tightening torque:
8—11
N
m (80—110 cm-kg, 69—95 in-lb)
76G01C-228
Fuel Hose
Install the fuel hose.
Note
Be careful of the red marks on the hose.
76G01C-229
76G01C-230
Intercooler Pipe and Hose
1. Install the intercooler pipe and hose.
Tightening torque:
19—26 Nm (1.9—2.6 m-kg, 14—19 ft-lb)
2. Install the brake vacuum pipe.
Tightening torque:
8—11
N
m (80—110 cm-kg, 69—95 in-lb)
3. Connect the brake vacuum hose securely and
squeeze the clamp lightly with pliers to ensure a
good fit.
1C-97

FUEL SYSTEM 4B
REPLACEMENT
Caution
a) Before performing the following procedure,
release the fuel pressure from the fuel sys-
tem to reduce the possibility of injury or fire
(Refer to page 4B—45).
b)When servicing the fuel system, keep
sparks, cigarettes, and open flames away
from the fuel.
76G04B-077
86U04A-101
M Fuel pump
Fuel filter
Bracket
86U04A-102
Fuel Pump
1. Remove the rear seat and disconnect the fuel
pump connector.
2. Remove the service hole cover.
3. Disconnect the fuel hoses.
4. Remove the fuel pump and fuel tank gauge as-
sembly.
5. Replace the fuel pump.
Caution
Secure the fuel pump terminals and fuel hoses
securely.
6. Install in the reverse order of removal.
4B—57

4B FUEL SYSTEM
Pressure Regulator
1. Disconnect the vacuum hose and fuel return hose.
2. Remove the pressure regulator.
3. Install in the reverse order of removal.
Tightening torque:
8—11 N-m (0.8—1.1 m-kg, 69—95 in-lb)
76G04B-084
Pulsation Damper
1. Loosen the pulsation damper and remove it.
2. Install in the reverse order of removal.
76G04B-085
^-Fuel hose
ML*? ^-Fuel pump
^silntank filter
ti* e
76G04B-086
h
tS

Is o
Sjfbj
Fuel Filter
Low pressure side
Refer to page 4B—57.
86U04A-116
High pressure side
The fuel filter must be replaced at the intervals out-
lined in the maintenance schedule.
Warning
Always work away from sparks or open
flames.
1. Disconnect the fuel hoses from the fuel filter.
2. Remove the fuel filter and the bracket.
3. Install a new filter and the bracket.
4. Connect the fuel hoses.
Note
When installing the filter, push the fuel hoses
fully onto the fuel filter and secure the hoses
with spring clamps.
4B-60

4C INTAKE AIR SYSTEM
Installation Note
Water hose spring clamps
Face the clamp end as shown in the figure.
Gasket
Use new gaskets at the intake manifold, dynamic
chamber, and throttle body.
86U04A-056
• . v 1
Engine 1 Ml' ' •-
hanger ^ •
• i::£?^Solenoid valve bracket
Air cleaner. r^I. ^jUvW;
Th V
Ground harnesses
Make sure that the ground harnesses are tightened
securely at the following positions.
(1) Air cleaner upper case
(2) Solenoid valve braket
(3) Engine hanger
76G04C-062
Solenoid valve connectors
Connect the solenoid valve connectors at the posi-
tions shown in the figure.
76G04C-063
Inspection after installation
1. After completing installation, fill up the engine with
the specified engine coolant.
2. Warm up the engine and run it at idle.
3. Check for any vacuum, coolant, or fuel leaks.
76G04C-064
4C-38

4C FUEL SYSTEM
BW B
11. If not correct, check the voltage at terminals of the
fuel pump control unit.
76G04C-109
76G04C-110
86U04A-101
Fuel pump
Fuel filter
Bracket
76G04C-111
Terminal (wire) Voltage
A(B) Approx. 12V
C (BW) OV
12. If the voltages are correct, replace the fuel pump
control unit.
13. If not correct, repair the power supply circuit or the
ground circuit for the fuel pump control unit.
REPLACEMENT
Caution
A)Before performing the following procedure,
release the fuel pressure from the fuel sys-
tem to reduce the possibility of injury or fire.
(Refer to page 4C—52.)
b)When servicing the fuel system, keep
sparks, cigarettes, and open flames away
from the fuel.
Fuel Pump
1. Remove the rear seat and disconnect the fuel
pump connector.
2. Remove the service hole cover.
3. Disconnect the fuel hoses.
4. Remove the fuel pump and fuel tank gauge as-
sembly.
5. Replace the fuel pump.
Caution
Secure the fuel pump terminals and fuel hoses
tightly.
6. Install in the reverse order of removal.
4C—60