Infiniti G37 Coupe. Manual - part 626

REAR TIMING CHAIN CASE

EM-79

< DISASSEMBLY AND ASSEMBLY >

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Disassembly and Assembly

INFOID:0000000001547553

DISASSEMBLY

1.

Remove front timing chain case and timing chain. Refer to 

EM-49, "Removal and Installation"

.

2.

Remove water pump. Refer to 

CO-19, "Exploded View"

.

3.

Remove oil pan (upper). Refer to 

EM-75, "Exploded View"

.

4.

Remove rear timing chain case as follows:

a.

Loosen mounting bolts in reverse order as shown in the figure.

b.

Cut liquid gasket using the seal cutter [SST: KV10111100
(J37228)] and remove rear timing chain case.

CAUTION:

• Never remove plate metal cover (1) of oil passage.
• After removal, handle rear timing chain case carefully so

it does not tilt, cant, or warp under a load.

10.

Slack guide

11. Crankshaft sprocket

12.

Camshaft sprocket (INT)

13.

Tension guide

14.

Intake valve timing control cover 
gasket (bank 1)

15.

Seal ring

16.

Intake valve timing control cover 
(bank 1)

17. O-ring

18.

Camshaft position sensor (PHASE) 
(bank 1)

19.

Oil level gauge

20. Oil level gauge guide

21.

O-ring

22.

Intake valve timing control solenoid 
valve (bank 2)

23.

Intake valve timing control cover 
(bank 2)

24.

Camshaft position sensor (PHASE) 
(bank 2)

25.

Intake valve timing control cover 
gasket (bank 2)

26. Front oil seal

27.

Crankshaft pulley

28.

Crankshaft pulley bolt

29.

Intake valve timing control solenoid 
valve (bank 1)

30.

Power steering oil pump bracket

31.

Idler pulley bracket

32. Alternator bracket

33.

Water outlet (front)

34.

Front timing chain case

35. Rear timing chain case

36.

O-ring

37.

O-ring

38. O-ring

A.

Refer to 

EM-49

B.

Refer to 

EM-79

C.

Oil filter 

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

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REAR TIMING CHAIN CASE

5.

Remove O-rings (1) from cylinder block.

6.

Use a scraper to remove all traces of liquid gasket from rear timing chain cases and opposite mating sur-
faces.

7.

Remove old liquid gasket from bolt hole and thread.

ASSEMBLY

1.

Install rear timing chain case as follows:

a.

Install new O-rings (1) onto cylinder block.

b.

Apply liquid gasket with the tube presser (commercial service tool) to rear timing chain case back side as
shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to 

GI-15, "Recommended Chemical Prod-

ucts and Sealants"

.

CAUTION:

• For 

 in the figure, completely wipe off liquid gasket extended on a portion touching at engine

coolant.

• Apply liquid gasket on installation position of water pump and cylinder head completely.

: Engine front

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A

: Remove old liquid gasket that is stuck

B

: Bolt hole

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: Engine front

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REAR TIMING CHAIN CASE

EM-81

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c.

Align rear timing chain case with dowel pins (bank 1 and bank 2) on cylinder block and install rear timing
chain case.
• Check that O-rings stay in place during installation to cylinder block.

d.

Tighten mounting bolts in numerical order as shown in the fig-
ure.
• There are three types of mounting bolts. Refer to the following

for locating bolts.

e.

After all bolts are tightened, retighten them to the specified torque in numerical order shown in the figure.
• If liquid gasket protrudes, wipe it off immediately.

C.

Protrusion

D.

Clearance 1 mm (0.04 in)

E.

Do not protrude in this area

F.

Run along bolt hole inner side

G.

Protrusions at beginning and end of 
gasket

h.

3.4 - 4.4 mm (0.134 - 173 in) dia

i.

2.6 - 2.8 mm (0.102 - 0.110 in) dia

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

Bolt length:

Bolt position

20 mm (0.79 in)

: 1, 2, 3, 6, 7, 8, 9, 10

16 mm (0.63 in)

: 4, 5, 11, 12, 13

: 12.7 N·m (1.3 kg-m, 9 ft-lb)

16 mm (0.63 in)

: Except the above

: 15.0 N·m (1.5 kg-m, 11 ft-lb)

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REAR TIMING CHAIN CASE

f.

After installing rear timing chain case, check the surface height
difference between the following parts on the oil pan (upper)
mounting surface.

• If not within the standard, repeat the installation procedure.

2.

Install water pump with new O-rings. Refer to 

CO-19, "Exploded View"

.

3.

Install timing chains, camshaft sprockets and front timing chain case. Refer to 

EM-49, "Removal and

Installation"

.

• After installing front timing chain case, check the surface

height difference between the following parts on the oil pan
(upper) mounting surface.

• If not within the standard, repeat the installation procedure.

4.

Install in the reverse order of removal after this step.

1

: Rear timing chain case

2

: Lower cylinder block

Standard

Rear timing chain case to lower cylinder block:

–0.24 to 0.14 mm (–0.0094 to 0.0055 in)

1

: Front timing chain case

2

: Rear timing chain case

3

: Lower cylinder block

Standard

Front timing chain case to rear timing chain case:

–0.14 to 0.14 mm (–0.0055 to 0.0055 in)

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