Mazda Engine SKYACTIV-G 2.5. Manual — part 6

MECHANICAL

01-10–8

1. Disassemble in the order indicated in the table.

.

R

1

A

3

A

2

13

17

16

15

14

24

18

19

21

20

SST

SST

12

4

5

22

23

9

10

8

7

11

6

SST

R

R

R

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1

Dipstick

2

Cylinder head cover

3

Oil shower pipe

4

Spark plug

5

Water pump pulley

(See 01-10-9 Water Pump Pulley Disassembly Note.)

MECHANICAL

01-10–9

01-10

Water Pump Pulley Disassembly Note

Caution

• Be careful not to damage the belt groove and surface of the water pump pulley when using tools,

otherwise it will cause wear, breakage, abnormal noise of the drive belt (stretch belt), damage to

the pulley, and rust.

1. Align the water pump pulley hole with the water

pump hole as shown in the figure.

2. Insert an appropriate bolt (length

approx. 70 mm

{2.8 in}) into the water pump hole as shown in the

figure, and lock the water pump pulley against

rotation.

3. Remove the water pump pulley.

4. Remove the bolt used for locking the water pump

pulley against rotation.

6

Crankshaft pulley lock bolt

(See 01-10-10 Crankshaft Pulley Lock Bolt

Disassembly Note.)

7

Crankshaft pulley

8

Electric variable valve timing motor/driver

9

Oil pan

(See 01-10-10 Oil Pan Disassembly Note.)

10 Engine front cover

(See 01-10-10 Engine Front Cover Disassembly

Note.)

11 Front oil seal

(See 01-10-11 Front Oil Seal Disassembly Note.)

12 Chain guide (No.1)
13 Chain tensioner

(See 01-10-11 Chain Tensioner Disassembly Note.)

14 Tensioner arm

15 Timing chain
16 Chain guide (No.2)
17 Crankshaft sprocket
18 Oil pump chain tensioner

(See 01-10-12 Oil Pump Chain Disassembly Note.)

19 Balancer shaft sprocket

(See 01-10-12 Oil Pump Chain Disassembly Note.)

20 Oil pump chain

(See 01-10-12 Oil Pump Chain Disassembly Note.)

21 Oil pump driven sprocket

(See 01-10-12 Oil Pump Chain Disassembly Note.)

22 Oil pump chain guide
23 Oil pump drive sprocket
24 Key

WATER PUMP PULLEY

WATER PUMP

HOLE

HOLE

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WATER PUMP PULLEY

BOLT

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MECHANICAL

01-10–10

Crankshaft Pulley Lock Bolt Disassembly Note

1. Hold the crankshaft using the

SST.

2. Remove the crankshaft pulley lock bolt.

Oil Pan Disassembly Note

1. Remove the oil pan using a separator tool.

Engine Front Cover Disassembly Note

1. Remove the engine front cover installation bolts.

2.

Using a screwdriver wrapped in a cloth, peel the

sealant away a little at a time, and remove the

engine front cover.

Caution

• Do not apply excessive force to the

screwdriver. Otherwise, the engine front

cover could be damaged.

• Be careful not to scratch or damage the

seal surface. Otherwise, it could cause

oil leakage.

49 E011 1A0

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CLOTH

CLOTH

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CLOTH

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MECHANICAL

01-10–11

01-10

Front Oil Seal Disassembly Note

1. Remove the oil seal using a flathead screwdriver

with the tip protected by a clean cloth.

Chain Tensioner Disassembly Note

1. While moving the exhaust camshaft back and

forth in the direction of the arrow using a wrench

on the cast hexagon, press down the link plate of

the timing chain tensioner using a precision

screwdriver and release the plunger lock.

Note

• When moving the exhaust camshaft back

and forth, the timing chain pushes the

plunger in the chain tensioner making it

easier to operate the link plate.

2. Push back the plunger slowly in the direction

shown in the figure with the link plate still pushed

down.

3. Remove the screwdriver from the link plate with

the plunger still pushed down.

4. Release the force slightly from the plunger, and

move it back and forth

2—3 mm {0.08—0.11 in}.

CLOTH

FRONT OIL SEAL

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LINK PLATE

PLUNGER

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