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Nissan Altima HL32 Hybrid. Manual - part 392

EM-82

< DISASSEMBLY AND ASSEMBLY >

[QR25DE]

CYLINDER BLOCK

• Rotate the crankshaft so the pin corresponding to the connect-

ing rod to be installed is at the bottom dead center position.

• Apply engine oil sufficiently to the cylinder bore, piston, and

crankshaft pin.

• Match the cylinder position number with the cylinder No. on

the connecting rod for installation.

• Using a piston ring compressor, install the piston with the front

mark on the piston crown facing the front of the engine.

CAUTION:

Be careful not to damage the crankshaft pin, resulting from

an interference of the connecting rod big end.

14. Install the connecting rod caps. Assemble the components in

their original positions.

• Match the stamped cylinder number marks on the connecting

rod with those on the cap to install.

15. Tighten the connecting rod bolt as follows:

Apply engine oil to the threads and seats of the connecting rod

bolts.

CAUTION:

Check tightening angle. Do not make judgment by visual

inspection.

• Check the connecting rod side clearance. Refer to

EM-83, "Inspection After Disassembly"

• After tightening the bolts, make sure that the crankshaft rotates smoothly.

16. Install drive plate.

• Install reinforcement plate.

• Using a drift with 33 mm (1.30 in) diameter, push pilot converter into the end of the crankshaft.

17. Install the knock sensor.

• Make sure that there is no foreign material on the cylinder

block mating surface and the back surface of the knock sen-

sor.

• Install the knock sensor with the connector facing lower left by

° as shown.

• Do not tighten the bolts while holding the connector.

• Make sure that the knock sensor does not interfere with other

parts.

CAUTION:

If the knock sensor is dropped, replace it with new one.

18. Install the crankshaft position sensor (POS).
19. Installation of remaining components is in the reverse order of removal.

Tool number

: EM03470000

WBIA0485E

SBIA0282E

Tool number

: KV10112100 (BT-8653-A)

Step 1

: 29.4 N·m (3.0 kg-m, 22 ft-lb)

Step 2

: 0 N·m

Step 3

: 19.6 N·m (2.0 kg-m, 14 ft-lb)

Step 4

: Rotate bolts 90

° + 0.5°

WBIA0163E

PBIC3020E

CYLINDER BLOCK

EM-83

< DISASSEMBLY AND ASSEMBLY >

[QR25DE]

Inspection After Disassembly

INFOID:0000000004211261

CRANKSHAFT SIDE CLEARANCE

• Using a dial gauge, measure the clearance between the thrust

bearings and the crankshaft arm when the crankshaft is moved

fully forward or backward.

• If the measured value exceeds the limit, replace the thrust bear-

ings, and measure again. If it still exceeds the limit, replace the

crankshaft.

CONNECTING ROD SIDE CLEARANCE

• Measure side clearance between connecting rod and crankshaft

arm using a feeler gauge.

• If the measured value exceeds the limit, replace the connecting

rod bearings, and measure again. If it still exceeds the limit,

replace the crankshaft also.

PISTON AND PISTON PIN CLEARANCE

Diameter of Piston Pin Bore

• Measure the diameter of piston pin bore using an inside microme-

ter. Refer to

EM-98, "Standard and Limit"

Outer Diameter of Piston Pin

• Measure outer diameter of piston pin using a micrometer. Refer to

EM-98, "Standard and Limit"

Piston to Piston Pin Clearance

(Piston pin clearance) = (Piston pin bore diameter) – (Outer diameter of piston pin)

Standard

: 0.10 - 0.26 mm (0.0039 - 0.0102 in)

Limit

: 0.30 mm (0.0118 in)

PBIC0268E

Standard

: 0.20 - 0.35 mm (0.0079 - 0.0138 in)

Limit

: 0.50 mm (0.0197 in)

KBIA0071E

PBIC0116E

PBIC0117E

EM-84

< DISASSEMBLY AND ASSEMBLY >

[QR25DE]

CYLINDER BLOCK

• A: Front mark

• B: Piston pin bore grade

• C: Piston grade I.D. stamp

• D: Piston crown I.D. code stamp

• If clearance exceeds specification, replace either or both of piston/

piston pin assembly and connecting rod assembly with reference

to specification of each parts.

• Use the piston selection table to replace piston/piston pin assem-

bly. Refer to

EM-91, "How to Select Piston and Bearing"

• Use the connecting rod bearing selection table to replace connect-

ing rod. Refer to

EM-91, "How to Select Piston and Bearing"

NOTE:

• The connecting rod small end grade and piston pin hole (piston

pin) grade are provided only for the parts installed at the plant. For

service parts, no grades can be selected. Only 0 grade is avail-

able.

• Follow the "CONNECTING ROD BUSHING OIL CLEARANCE

(SMALL END)" procedure for the values for each grade at the

plant.

PISTON RING SIDE CLEARANCE

• Measure side clearance of piston ring and piston ring groove using

a feeler gauge. Refer to

EM-98, "Standard and Limit"

• If out of specification, replace piston and/or piston ring assembly.

PISTON RING END GAP

• Check if inner diameter of cylinder bore is within specification. Fol-

low the "PISTON TO CYLINDER BORE CLEARANCE".

• Insert piston ring until middle of cylinder with piston, and measure

gap using a feeler gauge. Refer to

EM-98, "Standard and Limit"

• If out of specification, replace piston ring.

CONNECTING ROD BEND AND TORSION

Standard

: 0.002 - 0.006 mm (0.0001 - 0.0002 in)

ALBIA0209ZZ

SBIA0282E

SEM024AA

SEM822B

CYLINDER BLOCK

EM-85

< DISASSEMBLY AND ASSEMBLY >

[QR25DE]

• Check with connecting rod aligner. Refer to

EM-98, "Standard and

Limit"

• If it exceeds the limit, replace connecting rod assembly.

CONNECTING ROD BEARING (BIG END)

• Install the connecting rod cap without the connecting rod bearing

installed. After tightening the connecting rod bolt to the specified

torque, measure the connecting rod big end inner diameter using

an inside micrometer. Refer to

EM-98, "Standard and Limit"

CONNECTING ROD BUSHING OIL CLEARANCE (SMALL END)

Inner Diameter of Connecting Rod (Small End)

• Measure inner diameter of bushing. Refer to

EM-98, "Standard and

Limit"

Outer Diameter of Piston Pin

SEM003F

SEM038F

PBIC0119E

PBIC0120E

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