1987 MAZDA 626 engine

ASSEMBLY (CYLINDER BLOCK) 1 A
3. Install the rear cover and a new gasket.
Tightening torque:
8—12 N-m (80—120 cm-kg, 69—104 in-lb)
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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.
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End Plate
Install the end plate.
Tightening torque:
19—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)
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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.
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1
A—69

1 A ASSEMBLY (CYLINDER BLOCK)
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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.
6. Install a new O-ring into the pump body.
7. Install the oil pump.
Tightening torque
(A): 19—25 Nm
(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.
Stiffener (FE 8-valve...only ECE, 12-valve)
1. Remove any dirt or other material from the con-
tact surface.
2. Apply a continuous bead of silicon sealant to the
stiffener along the inside of the bolt holes, and over-
lap the ends.
3. Install the stiffener.
Tightening torque:
7—12
N
m (70—120 cm-kg, 61—104 in-lb)
Oil Strainer
Install the oil strainer and a new gasket.
Tightening torque:
8—12 N-m (80—120 cm-kg, 69—104 in-lb)
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1A—70

ASSEMBLY (CYLINDER HEAD) 1A
CYLINDER HEAD (12-valve)
Torque Specifications
19—25 N.m (1.9—2.6 m-kg, 14—19 ft-lb) 18—26 N-m (1.8—2.7 m-kg, 13—20 ft-lb)
80—86 N-m (8.2—8.8 m-kg, 59—64 ft-lb)
19—25 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
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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
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1
A—73

ASSEMBLY (CYLINDER HEAD) 1 A
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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 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.
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)
1A—74

ASSEMBLY (CYLINDER HEAD) 1 A
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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.
Hydraulic Lash Adjuster (HLA)
1. Pour engine oil into the oil reservoir in the rocker
arm.
2. Apply engine oil to the new HLA.
3. Carefully install the HLA into the rocker arm.
Caution
Be careful not to damage the O-ring when in-
stalling the HLA.
Camshaft Cap, Rocker Arm and Shaft Assembly
1. Assemble the rocker arm and shaft assembly as
shown in the figure.
Note
a) The intake side shaft has twice as many oil
holes as the exhaust side shaft.
b)The stepped ends are the rear of the shafts.
2. Apply silicon sealant to the shaded areas shown
in the figure.
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1 A—75

ASSEMBLY (CYLINDER HEAD) 1 A
3. Apply liberal amount of clean engine oil to the cam
lobes and journals.
4. Position the camshaft caps according to the
mark.
Note
The No. 3 camshaft cap has an oil passage
from the cylinder head, be certain it is in-
stalled correctly.
5. Install the rocker arm and shaft assemblies. Tight-
en 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)
Oil passage
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Caution
Be careful that the rocker arms or spacers do
not get caught between the shaft and cam-
shaft cap.
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Front Housing
1. Apply engine oil to the front housing and a new
oil seal.
2. Press the oil seal into the front housing.

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1A—76

ASSEMBLY (CYLINDER HEAD) 1 A
3. Apply engine oil to the oil seal lip.
4. Install the front housing and a new gasket.
Tightening torque:
19—25 Nm (1.9—2.6 m-kg, 14—19 ft-lb)
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Rear Housing
Install the rear housing and a new gasket.
Tightening torque:
19—25
N
m (1.9—2.6 m-kg, 14—19 ft-lb)
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1A—77

ASSEMBLY (CYLINDER HEAD) 1 A
CYLINDER HEAD (8-valve)
Torque Specifications
19-25 N m (1.9—2.6 m-kg. 14-19 ft-lb)
18—26 N m (1.8—2.7 m-kg, 13—20 tt-lb)
80—86 N-m (8.2—8.8 m-kg, 59—64 ft-lb)
19—25 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
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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

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1A—78