Nissan Altima L32. Manual - part 672

EM-224

< DISASSEMBLY AND ASSEMBLY >

[VQ35DE]

CYLINDER BLOCK

Connecting Rod Bearing (Big End)

1. Install the connecting rod bearing to the connecting rod and cap.
2. Install the connecting rod cap to the connecting rod. Tighten to specification. Refer to

EM-206, "Disassem-

bly and Assembly"

3. Measure the inner diameter (C) of each connecting rod (big end)

as shown.

4. Measure the outer diameter (Dp) of each crankshaft pin journal.
5. Calculate the connecting rod bearing clearance.

Connecting rod bearing clearance = (C) - (Dp)

6. If the calculated clearance exceeds the specified limit, replace

the bearings.

7. If the clearance cannot be adjusted within the standard of any

bearing, grind the crankshaft journal and use undersized bear-

ings.

8. If the crankshaft is replaced with a new one, select the connect-

ing rod bearings according to the following table:

Connecting Rod Bearing Grade Number (Identification

Color)

These numbers are punched in either Arabic or Roman numer-

als.

Method B (Using Plastigage)

• Remove oil and dust on the crankshaft pin and the surfaces of

each bearing completely.

• Cut a Plastigage slightly shorter than the bearing width, and place

it in crankshaft axial direction, avoiding oil holes.

• Install the connecting rod bearings to the connecting rod cap, and

tighten the connecting rod nuts to the specified torque.

CAUTION:

Never rotate the crankshaft.

• Remove the connecting rod cap and bearings, and using the scale

on the Plastigage bag, measure the Plastigage width.

NOTE:

The procedure when the measured value exceeds the repair limit

is same as that described in "Method A (Using Bore Gauge and Micrometer)".

DRIVE PLATE RUNOUT (CVT)

AEM027

Standard

: 0.020 - 0.045 mm (0.0008 - 0.0018 in)

Limit

: 0.070 mm (0.0028 in)

AEM034

Crankshaft pin journal grade

number

Connecting rod bearing grade

number

0 (black)

1 (brown)

2 (green)

SEM452G

SEM142

CYLINDER BLOCK

EM-225

< DISASSEMBLY AND ASSEMBLY >

[VQ35DE]

Runout (Total Indicator Reading):

CAUTION:

• The signal plate is built into the drive assembly. Be careful not

to damage the signal plate, particularly the teeth.

• Check the drive plate and signal plate for deformation or

cracks.

• Keep any magnetized objects away from the signal plate, particularly the teeth.

FLYWHEEL RUNOUT (M/T)

NOTE:

• This inspection is for double mass flywheel only.

• Do not disassemble the double mass flywheel.

Flywheel Deflection

• Measure the deflection of the flywheel contact surface to the clutch

with a dial gauge.

• Measure the runout at 210 mm (8.27 in) diameter.

• When measured value exceeds the limit, replace the flywheel with

a new one.

• Measure axial displacement at 250mm (9.84 in) diameter.

Movement Around in Rotation Direction

Check the movement amount with the following procedure:
1. Install a bolt to clutch cover mounting hole and place a torque wrench on the extended line of the flywheel

center line.

• Tighten the bolt at a force of 9.8 N·m (1 kg-m, 87 in-lb) to keep it from loosening.

2. Put a mating mark on the circumference of the two flywheel masses without applying any load (measure-

ment standard points).

3. Apply a force of 9.8 N·m (1 kg-m, 87 in-lb) in each direction, and mark the movement amount on the mass

on the transaxle side.

Drive plate (CVT)
torque converter sur-
face

: less than 0.35mm (.0138 in)

Ring gear

: less than 0.5mm (.0197 in)

SEM849EB

SEM760G

Limit

: 0.45 mm (0.0177 in) or less under no load

Limit

: 1.3mm (0.051 in) or less under 100 N
(22.48 lb) force

SBIA0287E

EM-226

< DISASSEMBLY AND ASSEMBLY >

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CYLINDER BLOCK

4. Measure dimensions of movement amounts A and B on the cir-

cumference of the flywheel on the transaxle side.

• When the measured value exceeds the standard, replace the

flywheel.

OIL JET

• Check nozzle for deformation and damage.

• Blow compressed air from nozzle, and check for clogs.

• If it is not satisfied, replace oil jet.

OIL JET RELIEF VALVE

• Using a clean plastic stick, press check valve in oil jet relief valve.

Make sure that valve moves smoothly with proper reaction force.

• If it is not satisfied, replace oil jet relief valve.

Dowel Pin Alignment

INFOID:0000000004505034

REMOVAL

1. Use Tool to lock the flywheel (M/T) or drive plate (CVT) before

removing the bolts.

CAUTION:

Do not damage the ring gear teeth, or the signal plate teeth

behind the ring gear, when setting Tool.

• CVT shown.

Flywheel movement
in rotation direction

: 20.22 mm (0.796 in) or
less

WBIA0224E

EMU0468D

Tool number

: KV10117700 (J-48716)

WBIA0270E

WBIA0506E

CYLINDER BLOCK

EM-227

< DISASSEMBLY AND ASSEMBLY >

[VQ35DE]

2. Remove the flywheel (M/T) or drive plate (CVT).

• Loosen the flywheel (M/T) or drive plate (CVT) bolts in a diag-

onal order.

CAUTION:

• Do not disassemble the flywheel (M/T) or drive plate

(CVT).

• Never place flywheel (M/T) or drive plate (CVT) with signal

plate facing down.

• When handling the signal plate, take care not to damage

or scratch it.

• Handle the signal plate in a manner that prevents it from

becoming magnetized.

INSTALLATION (M/T)

Installation is in the reverse order of removal.

• When installing the flywheel to the crankshaft, use the triangle

shaped match mark (A) as shown to correctly align the crankshaft

side dowel pin to the flywheel side dowel pin hole.

• Tighten the flywheel bolts in a diagonal pattern in two steps. Refer to

EM-206, "Disassembly and Assembly"

INSTALLATION (CVT)

Installation is in the reverse order of removal.

• When installing the drive plate to the crankshaft, use the triangle

shaped match mark (A) as shown to correctly align the crankshaft

side dowel pin to the drive plate side dowel pin hole.

• Install the drive plate and drive plate reinforcement plate in the

direction as shown.

• Tighten the drive plate bolts in a diagonal pattern in two steps.

Refer to

EM-206, "Disassembly and Assembly"

SEM760G

LBIA0469E

PBIC0910E

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