Nissan Altima HL32 Hybrid. Manual - part 384

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CAMSHAFT

3. Measure the center thickness of the removed valve lifters with a

micrometer.

4. Use the equation below to calculate valve lifter thickness for replacement.

• Valve lifter thickness calculation.

t = t1 + (C1 - C2)

t = Thickness of replacement valve lifter.

t1 = Thickness of removed valve lifter.

C1 = Measured valve clearance.

C2 = Standard valve clearance.

• Thickness of a new valve lifter can be identified by stamp

marks on the reverse side (inside the cylinder).

Stamp mark 696 indicates a thickness of 6.96 mm (0.2740 in)

Available thickness of valve lifter: 26 sizes with a range of

7.88 to 8.38 mm (0.3102 to 0.3299 in), in steps of 0.02 mm

(0.0008 in), when assembled at the factory.

5. Install the selected valve lifter.
6. Install camshaft.
7. Manually turn crankshaft pulley a few turns. 
8. Check that valve clearances for cold engine are within specifica-

tions, by referring to the specified values.

9. After completing the repair, check valve clearances again with the specifications for warmed engine. Use

a feeler gauge to measure the clearance between the valve and camshaft. Make sure the values are

within specifications.

*: Reference data at approximately 80

°C (176°F)

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Valve clearance standard:
Cold

Intake

: 0.24 - 0.32 mm (0.009 - 0.013 in)

Exhaust

: 0.26 - 0.34 mm (0.010 - 0.013 in)

Hot*

Intake

: 0.304 - 0.416 mm (0.012 - 0.016 in)

Exhaust

: 0.308 - 0.432 mm (0.012 - 0.017 in)

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TIMING CHAIN

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TIMING CHAIN

Removal and Installation

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CAUTION:

Apply new engine oil to parts as indicated in the illustration before installation.

REMOVAL

1. Support the engine and transaxle assembly with suitable tools.

1.

O-rings

2.

Camshaft sprocket (INT)

3.

Camshaft sprocket (EXH)

4.

Chain tensioner

5.

Spring

6.

Chain tensioner plunger

7.

Timing chain slack guide

8.

Timing chain

9.

Front cover

10. Chain guide

11. IVT solenoid valve

12. IVT cover

13. Crankshaft pulley bolt

14. Crankshaft pulley 

15. Front oil seal

16. Balancer unit timing chain tensioner

17. Oil pump drive spacer

18. Crankshaft sprocket

19. Timing chain tension guide

20. Balancer unit timing chain

21. Balancer unit

22. Balancer unit sprocket

A.

Follow the installation procedure

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TIMING CHAIN

2. Remove RH splash shield.
3. Remove the upper and lower oil pan, and oil strainer. Refer to 

EM-31, "Removal and Installation"

.

4. Remove engine cover.
5. Disconnect variable timing control solenoid harness connector.
6. Remove engine ground.
7. Remove the coolant overflow reservoir tank. 
8. Position the RH engine compartment fuse and relay box aside.
9. Remove the RH engine mount and bracket. Refer to 

EM-71, "Removal and Installation"

.

10. Loosen bolts in the numerical order as shown. 

a.

Remove the IVT (intake valve timing) control cover using Tool.

11. Pull chain guide between camshaft sprockets out through front cover.

12. Set the No.1 cylinder at TDC on the compression stroke with the

following procedure: 

a. Rotate the crankshaft pulley clockwise and align the mating

marks to the timing indicator on the front cover.

b. At the same time, make sure that the mating marks on the cam-

shaft sprockets are lined up as shown.

• If not lined up, rotate the crankshaft pulley one more turn to

line up the mating marks to the positions as shown.

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Tool number

: KV10111100 (J-37228)

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TIMING CHAIN

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13. Remove crankshaft pulley with the following procedure:
a. Hold the crankshaft pulley using suitable tool, then loosen the

crankshaft pulley bolt, and pull the pulley out about 10 mm (0.39

in).

b. Attach suitable pulley puller in the M 6 (0.24 in diameter) thread

hole on crankshaft pulley, and remove crankshaft pulley using a

suitable puller. 

14. Remove the front cover with the following procedure:
a. Loosen the bolts in the numerical order as shown, and remove

them.

b. Remove the front cover.

CAUTION:

• Be careful not to damage the mounting surface.

15. Remove front oil seal using suitable tool, if necessary. 

16. Remove timing chain with the following procedure:
a. Push in the tensioner plunger. Insert a stopper pin into the hole

on the tensioner body to secure the chain tensioner plunger and

remove chain tensioner.

• Use a wire of 0.5 mm (0.02 in) diameter as a stopper pin.

b. Remove the timing chain.

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