Nissan Altima L32. Manual - part 632

EM-64

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CYLINDER HEAD

CYLINDER HEAD

Removal and Installation

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REMOVAL

1. Remove the engine and transaxle assembly. Refer to 

EM-72, "Removal and Installation"

.

2. Remove the timing chain. Refer to 

EM-52, "Removal and Installation"

.

3. Remove the camshafts. Refer to 

EM-41

.

4. Remove spark plugs. Refer to 

EM-14, "Removal and Installation"

.

5. Remove the exhaust manifold and three way catalyst. Refer to 

EM-30, "Removal and Installation"

.

6. Remove cylinder head loosening bolts in the order as shown,

using power tool. 

7. If necessary to transfer to new cylinder head or remove for

reconditioning, remove the intake manifold collector, intake man-

ifold, and fuel tube assembly. Refer to 

EM-66, "Disassembly and

Assembly"

.

INSPECTION AFTER REMOVAL

Outer Diameter of Cylinder Head Bolts

• Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between

d1 and d2 exceeds the limit, replace the bolts with new ones. 

AWBIA0066ZZ

1.

Cylinder head

2.

Cylinder head gasket

3.

Cylinder head bolt

A.

Follow installation procedure

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CYLINDER HEAD

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• If reduction of outer diameter appears in a position other than d2,

use it as d2 point.

INSTALLATION

1. Install a new cylinder head gasket.
2. Install the cylinder head.
3. Follow the steps below to tighten the cylinder head bolts in the numerical order as shown.

• Apply new engine oil to the threads and the seating surfaces of bolts.

CAUTION:

• If cylinder head bolts are re-used, check their outer diameters before installation. Follow the

Outer Diameter of Cylinder Head Bolts measurement procedure.

• Check and confirm the tightening angle by using angle wrench or protractor. Avoid judgment by

visual inspection without the tool.

4. Installation of the remaining components is in the reverse order of removal. 

Limit (d1 - d2)

: 0.23 mm (0.0091 in) or less

KBIA0189E

Tool number

: KV10112100 (BT-8653-A)

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Step a

: 98.1 N·m (10 kg-m, 72 ft-lb) 

Step b

: Loosen to 0 N·m in the reverse order of tight-
ening.

Step c

: 39.2 N·m (4.0 kg-m, 29 ft-lb)

Step d

: 75

° clockwise

Step e

: 75

° clockwise

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CYLINDER HEAD

Disassembly and Assembly

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CAUTION:

• When installing camshafts, chain tensioners, oil seals or other sliding parts, lubricate contacting

surfaces with new engine oil.

• Apply new engine oil to threads and seat surfaces when installing the cylinder head, camshaft

sprocket, crankshaft pulley and camshaft bracket.

• Attach tags to valve lifters so all parts are assembled in their original position.

DISASSEMBLY

1. Remove the valve lifter.

• Confirm installation point.

2. Remove the valve collet, valve spring retainer and valve spring

using Tool. 

CAUTION:

Do not remove valve spring seat from valve spring.

3. Push valve stem to combustion chamber side, and remove

valve. 

• Inspect valve guide clearance before removal. Refer to 

EM-

68, "Inspection After Disassembly"

.

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1.

Valve collet

2.

Valve spring retainer

3.

Valve spring 

4.

Valve oil seal

5.

Valve guide

6.

Spark plug tube

7.

Cylinder head bolt

8.

Cylinder head gasket

9.

Valve seat (EXH)

10. Valve (EXH)

11. Valve (INT)

12. Valve seat (INT)

13. Cylinder head

A.

Follow installation procedure

Tool number

: KV10116200 (J-26336-B)
: KV10115900 (J-26336-20)

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CYLINDER HEAD

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• Confirm installation point.

4. Remove valve oil seal using Tool.

5. When valve seat must be replaced, refer to 

EM-68, "Inspection After Disassembly"

.

6. When valve guide must be replaced, refer to 

EM-68, "Inspection After Disassembly"

.

7. Remove spark plug using suitable tool.
8. Remove spark plug tubes, if necessary using suitable tool.

CAUTION:

• Be careful not to damage cylinder head.

• Do not remove spark plug tube if not necessary. Once removed, the spark plug tube cannot be

reused because of deformation during removal.

ASSEMBLY

1. Install valve guide. Refer to 

EM-68, "Inspection After Disassembly"

.

2. Install valve seat. Refer to 

EM-68, "Inspection After Disassembly"

.

3. Install new valve oil seal using Tool as shown.

4. Install valve.

• Install larger diameter to intake side.

5. Install valve spring.

• Install valve spring so that the identification color faces upwards.

• Confirm the identification color of the valve spring.

• Intake: pink

• Exhaust: green

6. Install valve spring retainer.
7. Install valve collet using Tool.

• Compress valve spring with valve spring compressor. Install valve collet with magnet hand.

• Tap stem edge lightly with plastic hammer after installation to check its installed condition.

8. Install valve lifter.

Tool number

: KV10107902 (J-38959)

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Oil seal installed height (A)

: 12.1 mm (0.476 in)

Tool number

: KV10115600 (J-38958)

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Tool number

: KV10116200 (J-26336-B)
: KV10115900 (J-26336-20)