1987 MAZDA 626 lock

1C ASSEMBLY (CYLINDER BLOCK)
Pilot Bearing
1. Apply engine oil to the outer circumference of the
bearing.
2. Set a piece of pipe (outer diameter 30—34 mm,
1.18—1.34 in) against the outer race of the bear-
ing, then tap it evenly into the crankshaft.
3. Lubricate the bearing with grease.
76G01C-156
Piston and Connecting Rod Assembly
1. Apply a liberal amount of clean engine oil to the
cylinder walls, piston, and rings.
2. Check the piston rings for the end gap alignment.
3. Insert each piston assembly into the cylinder block
with the "F" mark facing the front of the engine.
Use a piston installer tool (commercially available).
86U01X-128
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:
65—69 N-m (6.6—7.0 m-kg, 48—51 ft-lb)
Oil clearance:
0.027—0.055 mm (0.0011—0.0022 in)
Maximum: 0.08 mm (0.0031 in)
76G01C-157
Caution
Align the alignment marks on the cap and on
the connecting rod when installing the con-
necting rod cap.
If the oil clearance exceeds the maximum, grind
the crankshaft and use undersize bearings. (Re-
fer to page 1C—60.)
76G01C-158
1C-66

ASSEMBLY (CYLINDER BLOCK) 1 C
3. Check the side clearance of each connecting rod
without the cap installed.
Side clearance:
0.11—0.262 mm (0.0043—0.0103 in)
Maximum: 0.30 mm (0.012 in)
If the clearance exceeds the maximum, replace the
connecting rod.
76G01C-159
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:
65—69 Nm (6.6—7.0 m-kg, 48—51 ft-lb)
86U01X-130
Oil jet
Install the oil jet into the cylinder block.
Tightening torque: 12—18 N-m
(1.2—1.8 m-kg, 104—156 in-lb)
76G01C-160
1C-67

1 C ASSEMBLY (CYLINDER BLOCK)
CYLINDER BLOCK—II
Torque Specifications
179—193 N m (18.3—19.7 m-kg, 132—142 ft-lb)
—
I iu
uii-nn, 69—95 in-tb)
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
1C-68

ASSEMBLY (CYLINDER BLOCK) 1 C
86U01X-131
86U01X-132
76G01C-161
3. Install the rear cover and a new gasket.
Tightening torque:
8—12 Nm (80—120 cm-kg, 69—104 in-lb)
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.
End Plate
Install the end plate.
Tightening torque:
19—26
N
m (1.9—2.6 m-kg, 14—19 ft-lb)
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
1C-69

1 C ASSEMBLY (CYLINDER BLOCK)
86U01X-133
76G01C-162
76G01C-163
3. Apply engine oil to the oil seal lip.
4. Remove any dirt or other material from the con-
tact surfaces.
5. Apply a continuous 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:
Bolt A:
19—26 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
Bolt B:
37—52 Nfli (3.8—5.3 m-kg, 27—38 ft-lb)
8. Remove any sealant which has been squeezed
out.
Stiffener (RF-CX)
1. Remove any dirt or other material from the con-
tact surface.
2. Apply a continuous bead of silicone sealant to the
stiffener along the inside of the bolt holes, and over-
lap the ends.
3. Install the stiffener.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
Oil Strainer
Install the oil strainer and a new gasket.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)

76G01C-171

1C-70

ASSEMBLY (CYLINDER BLOCK) 1 C
76G01C-165
76G01C-166
Oil Pan
Remove any old sealant from the bolts and bolt holes.
If old sealant can not be removed from the bolt, re-
place it.
Without gasket
(1) Remove any dirt or grease from the contact
surfaces with a rag.
(2) Apply continuous bead of silicon sealant to the
oil pan along the inside of the bolt holes, and
overlap the ends.
(3) Install the oil pan.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
With gasket
(1) Apply sealant to the shaded areas in the figure.
(2) Install the gasket and the oil pan.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
Flywheel
1. Remove any old sealant from the bolts and bolt
holes. If old sealant can not removed from the bolt,
replace it.
2. Apply sealant to the bolt threads.
76G01C-167
Apply the lock
bolt threads
sealant
3. Install, and tighten the flywheel with the SST.
Tightening torque: 176—186 N-m
(18.0—19.0 m-kg, 130—137 ft-lb)

76G01C-172

1C—71

1 C ASSEMBLY (CYLINDER BLOCK)
Clutch Disc and Clutch Cover
Install the clutch disc and clutch cover using the SST.
(Refer to Section 6.)
Tightening torque:
18—26 Nm (1.8—2.7 m-kg, 13—20 ft-lb)
76G01C-169
Timing Belt Pulley
1. Install the timing belt pulley with the semicircular
(woodruff) key.
Tightening torque:
179—193 Nm (18.3—19.7 m-kg,
132—142 ft-lb)
4BG01B-180
2. Release the ring gear brake, turn the flywheel,
move the No.
1
piston to the top position, and then
turn it approximately 45° in the forward direction.
Caution
This is to prevent damage to the pistons and
valves when the cylinder head is installed.
4BG01B-181
1C—72

1 C ASSEMBLY (CYLINDER
BLOCK)

76G01C-170
Adjusting
disc
Tappet -
Apply engine oil
4BG01B-150
4BG01B-182
Apply engine oil
1.
Cylinder head bolt
below head length
Valve and Valve Spring
1. Install the lower spring seat.
2. Apply molybdenum disulphide grease to the valve
stem.
3. Install the valve.
4. Install the valve springs and the upper spring seat.
5. Compress the valve spring with the SST; then in-
stall the valve keepers.
6. 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.
Tappet and Adjusting Disc
1. Apply engine oil to the tappets.
2. Install the tappets in the hole.
3. Install the adjusting discs.
Cylinder Head
1. Thoroughly remove all dirt and grease from the top
of the cylinder block with a rag.
2. Place the new cylinder head gasket in position.
3. Remove any dirt or grease from the bottom sur-
face of the cylinder head.
4. Place the cylinder head in position.
5. Measure the length of the cylinder head bolt be-
low the head. If the length exceeds the maximum,
replace the bolt.
Length: 113.2—113.8 mm (4.457—4.480 in)
Maximum: 114.5 mm (4.508 in)
76G01C-171
1C-74