Mazda engine L8, LF, L3. Manual — part 5

ABBREVIATIONS

GI–15

GI

ABBREVIATIONS

A6E203000011E01

End Of Sie

ABBREVIATIONS

MTX

Manual transaxle

ATX

Automatic transaxle

ATDC

After top dead center

TDC

Top dead center

IN

Intake

EX

Exhaust

EGR

Exhaust gas recirculation

OCV

Oil control valve

SST

Special service tool

B–1

B

B

ENGINE

ENGINE . . . . . . . . . . . . . . . . .. B-2

ENGINE OVERHAUL SERVICE WARNING . ... B-2
ENGINE MOUNTING/DISMOUNTING . . . . B-2
TIMING CHAIN DISASSEMBLY . . . . . . .. B-3
CYLINDER HEAD (I) DISASSEMBLY . . . . . B-5
CYLINDER HEAD (II) DISASSEMBLY . . . . B-7
CYLINDER BLOCK (I) DISASSEMBLY . . . ... B-9
CYLINDER BLOCK (II) DISASSEMBLY . . . B-10
CYLINDER HEAD INSPECTION . . . . . ... B-11
VALVE, VALVE GUIDE INSPECTION. . . ... B-12
VALVE GUIDE REPLACEMENT . . . . . ... B-13
VALVE SEAT INSPECTION/REPAIR. . . . B-15
VALVE SPRING INSPECTION. . . . . . .. B-15
CAMSHAFT INSPECTION . . . . . . . . B-16
TAPPET INSPECTION . . . . . . . . . .. B-17
CYLINDER BLOCK INSPECTION. . . . . . B-18
OIL JET VALVE INSPECTION . . . . . . .. B-19
PISTON INSPECTION. . . . . . . . . ... B-19
CRANKSHAFT INSPECTION. . . . . . . B-20
CONNECTING ROD INSPECTION . . . . ... B-22
BOLT INSPECTION. . . . . . . . . . ... B-22
VARIABLE VALVE TIMING ACTUATOR

INSPECTION . . . . . . . . . . . . .. B-23

OIL CONTROL VALVE (OCV) INSPECTION . B-23
VALVE CLEARANCE INSPECTION. . . . .. B-24
VALVE CLEARANCE ADJUSTMENT . . . ... B-25
CYLINDER BLOCK (I) ASSEMBLY . . . . ... B-29
CYLINDER BLOCK (II) ASSEMBLY . . . . .. B-34
CYLINDER HEAD (I) ASSEMBLY . . . . . . B-37
CYLINDER HEAD (II) ASSEMBLY . . . . . B-39
TIMING CHAIN ASSEMBLY . . . . . . . .. B-41

B–2

ENGINE

ENGINE OVERHAUL SERVICE WARNING

A6E242402000E01

Warning

••••

Continuous exposure with USED engine oil has caused skin cancer in laboratory mice. Protect
your skin by washing with soap and water immediately after this work.

End Of Sie

ENGINE MOUNTING/DISMOUNTING

A6E242402000E02

1. Install the SSTs (arms) to the cylinder block holes

as shown, and hand-tighten the bolts (part No.:
9YA20-1003) or M10

××××

1.5T length 90 mm {3.55

in}.

2. Assemble the SSTs (bolts, nuts and plate) to the

specified positions.

3. Adjust the SSTs (bolts) so that less than 20 mm

{0.79 in} of thread is exposed.

4. Make the SSTs (arms and plate) parallel by

adjusting the SSTs (bolts and nuts).

5. Tighten the SSTs (bolts and nuts) to affix the

SSTs firmly.

Warning

••••

Self-locking brake system of the engine
stand may not be effective when the
engine is held in an unbalanced position.
This could lead to sudden, rapid
movement of the engine and mounting
stand handle and cause serious injury.
Never keep the engine in an unbalanced
position, and always hold the rotating
handle firmly when turning the engine.

6. Mount the engine on the SST (engine stand).
7. Drain the engine oil into a container.
8. Clean the flange surface (seal rubber) of the oil pan drain plug, then install the oil pan drain plug.

Tightening torque

20—30 N·m {2.1—3.0 kgf·m, 15—22 ft·lbf}

DISMOUNTING

•

Dismount in the reverse order of mounting.

End Of Sie

ENGINE

AME2224E065

AME2224E300

AME2224E301

ENGINE

B–3

B

TIMING CHAIN DISASSEMBLY

A6E242402000E04

1. Disassemble in the order indicated in the table.

.

AME2224E337

1

Spark plug

2

Cylinder head cover

3

Crankshaft pulley lock bolt
(See

B–4 Crankshaft Pulley Lock Bolt Disassembly

Note

)

4

Crankshaft pulley

5

Water pump pulley

6

Drive belt idler pulley

7

Engine front cover

8

Front oil seal
(See

B–4 Front Oil Seal Disassembly Note

)

9

Chain tensioner
(See

B–4 Chain Tensioner Disassembly Note

)

10

Tensioner arm

11

Chain guide

12

Timing chain

13

Seal (L3 (with variable valve timing mechanism))

14

Oil pump chain tensioner

15

Oil pump chain guide

16

Oil pump sprocket
(See

B–4 Oil Pump Sprocket Disassembly Note

)

17

Oil pump chain

18

Crankshaft sprocket