engine MAZDA 626 1987 Owners Manual

ASSEMBLY (CYLINDER BLOCK) 1 B
Connecting Rod Cap
1. Check the connecting rod bearing clearances us-
ing the same procedure as used for the main bear-
ing oil clearance.
Connecting rod cap tightening torque:
69—73 Nm (7.0—7.4 m-kg, 51—54 ft-lb)
Oil clearance:
0.027—0.067 mm (0.0011—0.0026 in)
Maximum: 0.10 mm (0.0039 in)
76G01B-076
Caution
Align the alignment marks on the cap and on
the connecting rod when installing the con-
necting rod cap.
2. If the oil clearance exceeds specification grind the
crankshaft and use undersize bearings. (Refer to
page 1B—46.)
76G01B-077
3. Check the side clearance of each connecting rod
without the cap installed.
Side clearance:
0.110—0.262 mm (0.004—0.0103 in)
Maximum: 0.30 mm (0.012 in)
If the clearance exceeds the maximum, replace the
connecting rod.
69G01B-139
4. Apply a liberal amount of engine oil to the crank-
pin journal and connecting rod bearing.
5. Install the connecting rod cap with the alignment
marks aligned.
Tightening torque:
69—73 Nm (7.0—7.4 m-kg, 51—54 ft-lb)
76G01B-078
1B—53

1 B ASSEMBLY (CYLINDER BLOCK)
CYLINDER BLOCK—II
Torque Specifications
19—25 N m (1.9—2.6 m-kg, 14-19 ft-lb)
7—12 N'm (70—120 cm-kg, 61—104 in-lb)
69G01A-166
Rear Cover
1. Apply engine oil to the rear cover, oil seal and oil
seal lip.
2. Press the oil seal into the rear cover.
4BG01A-158
1B—54

ASSEMBLY (CYLINDER BLOCK) 1 B
3. Install the rear cover and a new gasket.
Tightening torque:
8—12 N-m (80—120 cm-kg, 69—104 in-lb)
86U01X-131
4. Cut away the portion of the gasket that projects out
from the rear cover assembly toward the oil pan
side.
Caution
Do not scratch the rear cover assembly.
86U01X-132
End Plate
Install the end plate.
Tightening torque:
19—30 Nm (1.9—3.1 m-kg, 14—22 ft-lb)
4BG01A-160
Oil Pump
1. Apply engine oil to a new oil pump oil seal and the
oil pump body.
2. Press the oil seal into the oil pump body.
79G01C-085
1B—55

1 B ASSEMBLY (CYLINDER BLOCK)
3. Apply engine oil to the oil seal lip.
4. Remove any dirt or other material from the con-
tact surfaces.
5. Apply a continuos bead of silicon sealant to the
contact surface of the oil pump.
Caution
Do not allow any sealant to get into the oil
hole.
86U01X-133
6. Install a new O-ring into the pump body.
7. Install the oil pump.
Tightening torque

(A):
19—25
N
m
(1.9—2.6 m-kg, 14—19 ft-lb)
(§): 37—52
N
m
(3.8—5.3 m-kg, 27—38 ft-lb)
8. Remove any sealant which has been squeezed
out.
76G01A-137
Oil Jet
Install the oil jet as shown in the figure.
Tightening torque: 12—18 Nm
(1.2—1.8 m-kg, 104—156 in-lb)
Caution
The shapes of the No.1, 3 cylinders jet valves
and No.2, 4 jet valves are different.
76G01B-079
Oil Strainer
Install the oil strainer and a new gasket.
Tightening torque:
8—12 Nm (80—120 cm-kg, 69—104 in-lb)
86U01X-136
1B—56

ASSEMBLY (CYLINDER
BLOCK)
1 B
CYLINDER HEAD
Torque Specifications
18—26 N-m (1.8—2.7 m-kg, 13—20 ft-lb)
8—12 Nm (80—120 cm-kg, 69—104 in-lb)
4—6 Nm (40—60 cm-kg, 35—52 In-lb)
69G01B-152
49 G012 002
Valve Seal
1. Apply engine oil to the inside of the new valve seal.
2. Install the valve seal onto the valve guide with the
SST

76G01 B-083

1B—59

1 B ASSEMBLY (CYLINDER HEAD)
Valve spring
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Cylinder head side
76G01B-084
86U01X-145
76G01B-085
Valve and Valve Spring
1. Install the lower spring seat.
2. Install the valve.
3. Install the valve springs and the upper spring seat.
Note
Install the outer and inner valve spring with
the closer pitch toward the cylinder head.
4. Compress the valve spring with the SST; then in-
stall the valve keepers.
5. Tap the end of the valve stem lightly two or three
times with a plastic hammer to confirm that the
keepers are all fully seated.
Hydraulic Lash Adjuster (HLA)
1. Apply engine oil to the sliding surface.
2. Install the HLA in the position from which they were
removed.
3. Check for free movement.
76G01B-086
1B—60

ASSEMBLY (CYLINDER HEAD) 1 B
86U01X-146
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86U01X-147
86U01X-148
Cylinder Head
1. Thoroughly remove all dirt, oil, or other material
from the top of the cylinder block.
2. Place the new cylinder head gasket in position.
3. Install the cylinder head.
4. Apply engine oil to the bolt threads and seat faces.
5. Tighten the cylinder head bolts in two or three steps
in the order shown in the figure.
Tightening torque:
80—86 Nm (8.2—8.8 m-kg, 59—64 ft-lb)
Camshaft
1. Apply a liberal amount of engine oil to the journals
and bearings.
2. Place the camshaft in position with the dowel pin
facing straight up.
Camshaft Oil Seal
1. Apply liberal amount of clean engine oil to the cam-
shaft oil seal and cylinder head.
2. Install the camshaft oil seal.
76G01B-087
1B-61

1 B ASSEMBLY (CYLINDER HEAD)
76G01B-088
Camshaft Cap
1. Apply liberal amount of clean engine oil to the cam
lobes and journals.
2. Apply silicon sealant to the front camshaft cap
surface.
3. Position the camshaft caps according to the cap
number and mark.
4. Install the camshaft caps. Tighten the bolts in two
or three steps in the order shown in the figure.
Tightening torque:
18—26 Nm (1.8—2.7 m-kg, 13—20 ft-lb)
Seal Plate
Install the seal plate.
Tightening torque:
8—12
N
m (80—120 cm-kg, 69—104 in-lb)
1B—62

ASSEMBLY (AUXILIARY PARTS) 1 B
Oil Pressure Switch
Install the oil pressure switch.
Tightening torque: 12—18 N-m
(1.2—1.8 m-kg, 104—156 in-lb)
76G01A-087
Oil Cooler
Install the oil cooler.
Tightening torque:
29—39 N-m (3.0—4.0 m-kg, 22—29 ft-lb)
Oil Filter
1. Apply a small amount of engine oil to the rubber
seal of the new filter.
2. Install the oil filter and tighten it by hand until the
rubber seal contacts the base.
3. Then tighten the filter
1
and 1/6 turn with a wrench.
76G01B-099
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)
86U01X-167
Intake Manifold Bracket
Install the intake manifold bracket.
Tightening torque:
19—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)
86U01X-168
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1B-69

1 B ASSEMBLY (AUXILIARY PARTS)
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)
86U01X-169
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
N
m (1.5—2.3 m-kg, 11—17 ft-lb)
86U01X-219
1B—70
Distributor
1. Apply engine oil to the O-ring, and position it on
the distributor.
2. Apply engine oil to the blade.
3. Install the distributor.
4. Loosely tighten the distributor mounting bolt.
High-Tension Lead
Install the high-tension leads.
Center Cover
Install the center cover.
Tightening torque:
8—12 Nm (80—120 cm-kg, 69—104 in-lb)
Engine Mount Bracket
1. Install the engine mount bracket.
Tightening torque:
85—117
N m
(8.7—11.9 m-kg, 63—86 ft-lb)
2. Install the stay to the engine mount bracket.
Tightening torque:
37—52
N
m (3.8—5.3 m-kg, 27—38 ft-lb)