Mazda engine MZR–CD. Manual — part 8
B–12
ENGINE
Oil Pan Upper Block Disassembly Note
1. Loosen the oil pan upper block bolts in two or
three steps in the order shown.
2. Remove the oil pan upper block
Rear Cover Disassembly Note
1. Remove the oil seal using a screwdriver protected
with a rag.
Oil Pump Disassembly Note
1. Remove the oil seal using a screwdriver protected
with a rag.
End Of Sie
AME2524E078
AME2522E001
AME2520E001
ENGINE
B–13
B
CYLINDER BLOCK (II) DISASSEMBLY
AME222402000106
1. Disassemble in the order indicated in the table.
2.
.
AME2524E035
1
Connecting rod cap
(See
B–14 Connecting Rod Cap Disassembly Note
2
Connecting rod bearing
3
Connecting rod, piston
(See
B–14 Connecting Rod, Piston Disassembly
4
Piston ring
5
Snap ring
6
Piston pin
(See
B–14 Piston Pin Disassembly Note
)
7
Connecting rod
8
Piston
9
Main bearing cap
(See
B–14 Main Bearing Cap Disassembly Note
10
Lower main bearing, thrust bearing
11
Crankshaft
(See
B–14 Crankshaft Disassembly Note
12
Upper main bearing, thrust bearing
13
Oil jet
14
Cover
15
Cylinder block
B–14
ENGINE
Connecting Rod Cap Disassembly Note
1. Inspect the connecting rod side clearance.
(See
B–25 CONNECTING ROD SIDE CLEARANCE INSPECTION
Connecting Rod, Piston Disassembly Note
1. Before disassembling the connecting rod and piston, remove the carbon on the cylinder wall.
2. Inspect the connecting rod oil clearance.
(See
B–24 CONNECTING ROD OIL CLEARANCE INSPECTION/REPAIR
Piston Pin Disassembly Note
1. Inspect the oscillation torque.
(See
B–25 PISTON AND CONNECTING ROD INSPECTION
2. Remove the piston pin using the SST.
Main Bearing Cap Disassembly Note
1. Inspect the crankshaft end play.
(See
B–24 CRANKSHAFT END PLAY INSPECTION/REPAIR
2. Loosen the main bearing cap bolts in two or three
steps in the order shown.
Crankshaft Disassembly Note
1. Inspect the crankshaft oil clearance.
(See
B–23 CRANKSHAFT OIL CLEARANCE INSPECTION/REPAIR
End Of Sie
CYLINDER HEAD INSPECTION
AME222410100101
1. Carry out color contrast penetrate examination on the cylinder head surface. Replace the cylinder head if
necessary.
2. Inspect for the following and repair or replace if necessary.
(1) Sunken valve seats
(2) Excessive camshaft oil clearance and end play
AME2524E034
AME2524E068
ENGINE
B–15
B
3. Measure the cylinder head for distortion in the
seven directions as shown.
Maximum distortion
X distortion: 0.01 mm {0.0004 in}
Y distortion: 0.04 mm {0.0016 in}
4. If the cylinder head distortion exceeds the
maximum, replace the cylinder head. Do not
attempt to repair the cylinder head by milling or
grinding.
5. Measure the manifold contact surface distortion
as shown.
Maximum distortion
0.06 mm {0.0024 in}
6. If the distortion exceeds the maximum, grind the
surface or replace the cylinder head.
Maximum grinding
0.20 mm {0.008 in}
End Of Sie
VALVE, VALVE GUIDE INSPECTION
AME222412111101
1. Measure the valve head margin thickness of each
valve. Replace the valve if necessary.
Minimum margin thickness
IN: 0.8 mm {0.0315 in}
EX: 1.0 mm {0.0394 in}
2. Measure the length of each valve. Replace the
valve if necessary.
Standard length
IN: 115.01—115.51 mm {4.528—4.547 in}
EX: 114.35—114.85 mm {4.502—4.521 in}
Minimum length
IN: 114.785 mm {4.519 in}
EX: 114.125 mm {4.493 in}
AME2524E038
AME2524E039
AME2511E005
AMJ2224E071
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