1987 MAZDA 626 AUX

ENGINE
(SOHC)
OUTLINE 1A— 2
STRUCTURAL VIEW 1A— 2
SPECIFICATIONS 1A— 4
TROUBLESHOOTING GUIDE 1A— 4
TUNE-UP PROCEDURE 1A— 6
ON-VEHICLE INSPECTION 1A-13
COMPRESSION 1A—13
ON-VEHICLE MAINTENANCE 1A—14
TIMING BELT 1A—14
CYLINDER HEAD 1A—20
VALVE SEAL 1A—26
REMOVAL 1A—34
DISASSEMBLY 1A—36
AUXILIARY PARTS 1A—36
TIMING BELT 1A—38
CYLINDER HEAD 1A—40
CYLINDER BLOCK 1A—44
INSPECTION AND REPAIR 1A—48
ASSEMBLY 1A—62
CYLINDER BLOCK 1A—62
CYLINDER HEAD 1A—73
TIMING BELT 1A—82
AUXILIARY PARTS 1A—86
INSTALLATION 1A—91
TRANSAXLE ASSEMBLY 1A—91
ENGINE INSTALLATION 1A—92
76G01A-001

1 A DISASSEMBLY (AUXILIARY PARTS)
DISASSEMBLY
1. Remove in the sequence shown in the figure referring to the disassembly note for specially marked
parts.
2. Code all identical parts (such as pistons, piston rings, connecting rods, and valve springs) so that
they can be reinstalled in the cylinder from which they were removed.
3. Clean the parts with steam, blow off any remaining water with compressed air.
Note
Care should be taken during the disassembly of any part or system to study its order of
assembly. Any deformation, wear, or damage should also be noted.
AUXILIARY PARTS
76G01A-119
1A—36

DISASSEMBLY (AUXILIARY PARTS) 1 A
1. Oil level gauge
2. P/S oil pump bracket
3. Secondary air pipe assembly (except
General)
4. EGR pipe (Fl, Unleaded carb.)
5. Exhaust manifold insulator
6. Exhaust manifold assembly
7. Coolant inlet pipe and bypass pipe
8. Engine hanger
9. Alternator
10. Alternator strap and bracket
11. Engine mount bracket
12. Distributor and high-tension lead
13. Spark plug
14. Thermostat and thermostat cover
15. Intake manifold bracket (Fl)
16. Intake manifold assembly
17. Oil filter
18. Oil cooler (8-valve...only ECE, 12-valve)
19. Oil pressure switch
76G01A-047
Disassembly Note
Engine hanger
Remove the exhaust manifold; then connect the SST
to the engine.
76G01A-120
69G01X-000
1A—37

1 A ASSEMBLY (AUXILIARY PARTS)
AUXILIARY PARTS
Torque Specifications
37—63 N m (3.8—6.4 m-kg, 27—46 ft-lb)
19—30 N m (1.9—3.1 m-kg, 14—22 ft-lb)
19—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)
85—117 N m (8.7—11.9 m-kg, 63—86 ft-lb)
19—25 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
37—63 N m (3.8—6.4 m-kg, 27—46 ft-lb)
37—52 N-m (3.8—5.3 m-kg, 27—38 ft-lb)
i-kg, 25—33 ft-lb)
i-kg, 14—22 ft-lb)
15—23 N m (1.5—2.3 m-kg, 11—17 ft-lb)
34—49 N-m (3.5—5.0 m-kg, 25—36 ft-lb)
1S—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)
16—23 N-m (1.6—2.3 m-kg, 12—17 ft-lb)
86U01X-164
1A—86

ASSEMBLY (AUXILIARY PARTS) 1 A
76G01A-087
76G01A-088
86U01X-167
Oil Pressure Switch
Install the oil pressure switch.
Tightening torque: 12—18 N-m
(1.2—1.8 m-kg, 104—156 in-lb)
Oil Cooler (8-valve...only ECE, 12-valve)
Install the oil cooler.
Tightening torque:
29—39 N-m (3.0—4.0 m-kg, 22—29 ft-lb)
Oil Filter
1. Apply engine oil to the rubber gasket of the new
filter.
2. Install the oil filter, and tighten it by hand only. Do
not use a wrench.
Intake Manifold Assembly
1. Place the new gasket in position.
2. Install the intake manifold assembly.
3. Tighten the nuts in two or three steps.
Tightening torque:
19—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)
Intake Manifold Bracket (Fl)
Install the intake manifold bracket.
Tightening torque:
19—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)

76G01A-092

1A—87

1 A ASSEMBLY (AUXILIARY PARTS)
86U01X-169
86U01X-219
76G01A-035
Thermostat and Thermostat Cover
1. Install the thermostat into the cylinder head with
the jiggle pin at the top.
2. Position a new gasket with the printed side facing
the cylinder head.
3. Install the thermostat cover.
Tightening torque:
19—30 Nm (1.9—3.1 m-kg, 14—22 ft-lb)
Spark Plug
1. Apply anti-seize compound or molybdenum-based
lubricant to the spark plug threads.
2. Install the spark plugs.
Tightening torque:
15—23 Nm (1.5—2.3 m-kg, 11—17 ft-lb)
Distributor
1. Apply engine oil to the O-ring, and position it on
the distributor.
2. Apply engine oil to the blade or gear.
3. Align the mating marks as shown in the figure
...8-valve.
4. Install the distributor with the marks facing straight
up.
5. Loosely tighten the distributor mounting bolt.
High-Tension Lead
Install the high-tension leads.
Engine Mount Bracket
Install the engine mount.
Tightening torque:
85—117 Nm (8.7—11.9 m-kg, 63—86 ft-lb)

86U01X-178

1A—88

ASSEMBLY (AUXILIARY PARTS) 1 A
86U01X-171
76G01A-090
76G01A-091
Alternator
1. Install the alternator strap and bracket.
Tightening torque:
37—63 Nm (3.8—6.4 m-kg, 27—46 ft-lb)
2. Install the alternator.
Tightening torque
(A): 31—46 Nm
(3.2—4.7 m-kg, 23—34 ft-lb)
(§): 37—52 N-m
(3.8—5.3 m-kg, 27—38 ft-lb)
3. Install the alternator drive belt, and adjust the belt
deflection. (Refer to page 1A—7.)
Coolant Inlet Pipe and Bypass Pipe
1. Install the coolant inlet pipe.
Tightening torque:
19—25 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
2. Apply vegetable oil to the O-ring.
3. Install the coolant bypass pipe.
Tightening torque:
37—63
N
m (3.8—6.4 m-kg, 27—46 ft-lb)
Engine Hanger
Install the front and rear engine hangers.
Tightening torque:
19—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)
76G01A-092
1A—89

1 A ASSEMBLY (AUXILIARY PARTS)
76G01A-093
76G01A-094
76G01A-095
Exhaust Manifold Assembly
1. Place the new gaskets in position with the ridge
facing the cylinder head.
2. Install the exhaust manifold assembly.
3. Tighten the nuts in two or three steps.
Tightening torque:
34—49
N
m (3.5—5.0 m-kg, 25—36 ft-lb)
Exhaust Manifold Insulator
Install the exhaust manifold insulator.
Tightening torque:
19—30
N
m (1.9—3.1 m-kg, 14—22 ft-lb)
EGR Pipe
Install the EGR pipe.
Tightening torque:
34—44 Nm (3.5—4.5 m-kg, 25—33 ft-lb)
Secondary Air Pipe Assembly
Install the secondary air pipe assembly.
Tightening torque:
16—23 Nm (1.6—2.3 m-kg, 12—17 ft-lb)
P/S Oil Pump Bracket
Install the P/S oil pump bracket.
Tightening torque:
37—63 Nm (3.8—6.4 m-kg, 27—46 ft-lb)
86U01X-178
1A—90