Nissan Quest E52. Manual - part 583

TIMING CHAIN

EM-81

< UNIT DISASSEMBLY AND ASSEMBLY >

[VQ35DE]

Tighten mounting bolts to the specified torque in numerical order
as shown in the figure.
• There are two types of mounting bolt. Refer to the following for

locating bolts.

After all bolts tightening, retighten them to the specified torque in
numerical order as shown in the figure.

CAUTION:

Be sure to wipe off any excessive liquid gasket leaking on surface mating with oil pan (upper).

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.

17. Install water pump cover to front timing chain case.

• Apply a continuous bead of liquid gasket with the tube presser

(commercial service tool) to water pump cover (1) as shown in
the figure.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

18. Install intake camshaft sprocket covers as follows:

Install new seal rings in shaft grooves.

Install camshaft sprocket cover to timing chain case (front).

CAUTION:

• To insert, align shaft and the shaft hole center of cam sprocket on the intake side.
• Securely install seal ring to each shaft groove.

Being careful not to move seal rings from the installation grooves, align dowel pins on front timing chain
case with the holes to install camshaft sprocket covers.

M8 bolts

: 1, 2

: 28.4 N·m (2.9 kg-m, 21 ft-lb)

M6 bolts

: Except the above

: 12.7 N·m (1.3 kg-m, 9 ft-lb)

Standard

Front timing chain case to rear timing chain case:

−

0.14 to 0.14 mm (

−

0.006 to 0.006 in)

JPBIA1640ZZ

SEM943G

a :

2.3 - 3.3 mm (0.091 - 0.130 in)

JPBIA1722ZZ

EM-82

< UNIT DISASSEMBLY AND ASSEMBLY >

[VQ35DE]

TIMING CHAIN

Tighten mounting bolts in numerical order as shown in the fig-
ure.

19. Install oil pan (upper and lower) Refer to

EM-38, "Exploded View"

20. Install crankshaft pulley as follows:

Install crankshaft pulley, taking care not to damage front oil seal.

CAUTION:

When press-fitting crankshaft pulley with a plastic hammer, tap on its center portion (not circum-
ference).

Fix crankshaft with the pulley holder (commercial service tool).

Tighten crankshaft pulley bolt.

Place a paint mark (A) on crankshaft pulley (1) aligning with the
angle mark (B) on crankshaft pulley bolt (2). Tighten the bolt 90
degrees (angle tightening).

21. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns

smoothly.

22. Install in the reverse order of removal after this step.

Inspection

INFOID:0000000009652790

INSPECTION AFTER REMOVAL

Timing Chain

Check for cracks and any excessive wear at link plates and roller
links of timing chain. Replace timing chain if necessary.

INSPECTION AFTER INSTALLATION

Inspection for Leakage

: Bank 1

: Bank 2

: Dowel pin hole

JPBIA1639ZZ

: 44.1 N·m (4.5 kg-m, 33 ft-lb)

PBIC4627J

: Crack

: Wear

JPBIA0091ZZ

TIMING CHAIN

EM-83

< UNIT DISASSEMBLY AND ASSEMBLY >

[VQ35DE]

The following are procedures for checking fluids leakage and lubricates leakage.

• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required

quantity, fill to the specified level. Refer to

MA-10, "Fluids and Lubricants"

• Use procedure below to check for fuel leakage.
- Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-

age at connection points.

- Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.

NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a
pounding noise during and just after the engine start. However, this does not indicate an unusualness. Noise
will stop after hydraulic pressure rises.

• Warm up engine thoroughly to check there is no leakage of fuel, or any oil/fluids including engine oil and

engine coolant.

• Bleed air from lines and hoses of applicable lines, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the

specified level, if necessary.

Summary of the inspection items:

*: Power steering fluid, brake fluid, etc.

Items

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Transmission /
transaxle fluid

AT & CVT Models

Leakage

Level / Leakage

Leakage

MT Models

Level / Leakage

Leakage

Level / Leakage

Other oils and fluids*

Level

Leakage

Level

Fuel

Leakage

Exhaust gases

—

Leakage

—

EM-84

< UNIT DISASSEMBLY AND ASSEMBLY >

[VQ35DE]

CAMSHAFT

CAMSHAFT

Exploded View

INFOID:0000000009652791

Camshaft bracket (No. 3, 4)

Camshaft bracket (No. 2)

Seal washer

Camshaft bracket (No. 1)

Dowel pin

Camshaft (EXH) (bank 1)

Camshaft (INT) (bank 1)

Valve lifter

Timing chain tensioner (secondary)
(bank 1)

10. Spring

11.

Plunger

12.

Timing chain tensioner (secondary)
(bank 2)

13. Cylinder head (bank 2)

14.

Dowel pin

15. Camshaft sensor bracket (bank 2)

16. Camshaft (EXH) (bank 2)

17.

Camshaft signal plate (bank 2)

18. Camshaft (INT) (bank 2)

19. Cylinder head (bank 1)

20.

Camshaft signal plate (bank 1)

21. Camshaft sensor bracket (bank 1)

Comply with the assembly procedure
when tightening. Refer to

EM-85

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Should be lubricated with oil.

JPBIA1719GB

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