Infiniti FX35, FX50 (S51). Manual - part 939

EM-56

< REMOVAL AND INSTALLATION >

[VQ35HR]

TIMING CHAIN

c.

Remove rear cover plate and set the ring gear stopper [SST:
KV10118600 (J-48641)] (A) as shown in the figure.

d.

Loosen crankshaft pulley bolt and rotate bolt seating surface at
10 mm (0.39 in) from its original position.

CAUTION:

Never remove crankshaft pulley bolt as it will be used as a
supporting point for suitable puller.

e.

Place suitable puller tab on holes of crankshaft pulley, and pull
crankshaft pulley through.

CAUTION:

Never put suitable puller tab on crankshaft pulley periphery,
as this will damage internal damper.

26. Remove oil pan (lower). Refer to 

EM-46, "Exploded View"

.

27. Loosen two mounting bolts in front of oil pan (upper) with power

tool in reverse order as shown in the figure.

28. Remove front timing chain case as per the following:

1

: Oil pan (upper)

2

: Drive plate

: Vehicle front

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1

: Crankshaft pulley

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: Engine front

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TIMING CHAIN

EM-57

< REMOVAL AND INSTALLATION >

[VQ35HR]

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a.

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

b.

Insert a suitable tool (A) into the notch at the top of front timing
chain case as shown.

c.

Pry off case by moving the suitable tool as shown.
• Use the seal cutter [SST: KV10111100 (J-37228)] to cut liquid

gasket for removal. 

CAUTION:

• Never use a screwdriver or something similar.
• After removal, handle front timing chain case carefully so

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

29. Remove front oil seal from front timing chain case using a suit-

able tool.
• Use a screwdriver for removal.

CAUTION:

Be careful not to damage front timing chain case.

30. Remove O-rings (1) from rear timing chain case.

31. Remove timing chain tensioner (primary) as per the following:

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A

: Bank 1

B

: Bank 2

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EM-58

< REMOVAL AND INSTALLATION >

[VQ35HR]

TIMING CHAIN

a.

Remove lower mounting bolt (A).

b.

Loosen upper mounting bolt (B) slowly, and then turn timing
chain tensioner (primary) (1) on the upper mounting bolt so that
plunger (C) is fully expanded.
NOTE:
Even if plunger is fully expanded, it is not dropped from the body
of timing chain tensioner (primary).

c.

Remove upper mounting bolt, and then remove timing chain ten-
sioner (primary).

32. Remove internal chain guide (1), and slack guide (2).

33. Remove timing chain (primary) and crankshaft sprocket.

CAUTION:

After removing timing chain tensioner (primary), never turn crankshaft and camshaft separately, or
valves will strike the piston heads.

34. Remove timing chain (secondary) and camshaft sprockets as per the following:

a.

Attach suitable stopper pin (2) to the timing chain tensioners
(secondary) (1).

NOTE:
• Use approximately 0.5 mm (0.02 in) dia. hard metal pin as a

stopper pin.

• For removal of timing chain tensioners (secondary), refer to

EM-70, "Exploded View"

. [Removing camshaft bracket (No. 1)

is required.]

b.

Remove camshaft sprocket mounting bolts (INT and EXH).

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A

:  Bank  1

B

:  Bank  2

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TIMING CHAIN

EM-59

< REMOVAL AND INSTALLATION >

[VQ35HR]

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• Secure the hexagonal portion of camshaft using a wrench to

loosen mounting bolts.

c.

Remove timing chain (secondary) together with camshaft
sprockets.

CAUTION:

• Never loosen the mounting bolts with securing anything

other than the camshaft hexagonal portion or with ten-
sioning the timing chain.

• Never disassemble. [Never loosen bolts (A) and (B) as

shown in the figure.]

35. Remove timing chain tensioners (secondary) from cylinder head as per the following, if necessary.

a.

Remove camshaft brackets (No. 1). Refer to 

EM-70, "Exploded View"

.

b.

Remove timing chain tensioners (secondary) with a stopper pin attached.

36. Use a scraper to remove all traces of old liquid gasket from front

and rear timing chain cases and oil pan (upper), and liquid gas-
ket mating surfaces.

CAUTION:

Be careful not to allow gasket fragments to enter oil pan.

37. Remove old liquid gasket from bolt hole and thread.

INSTALLATION

NOTE:
The below figure shows the relationship between the matching mark on each timing chain and that on the cor-
responding sprocket, with the components installed.

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A

: Remove sticking old liquid gasket

B

:  Bolt  hole

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