Infiniti FX35 / FX45. Manual - part 654

CYLINDER BLOCK

EM-133

< SERVICE INFORMATION >

[VQ35DE]

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d.

Then tighten all connecting rod bolts 90 degrees clockwise
(Angle tightening).

CAUTION:

Always use the angle wrench [SST: KV10112100 (BT8653-
A)]. Avoid tightening based on visual check alone.
• After tightening connecting rod bolts, make sure that crank-

shaft rotates smoothly.

• Check the connecting rod side clearance. Refer to 

EM-138,

"Inspection After Disassembly"

.

15. Install baffle plate to main bearing beam (2WD models).
16. Install new rear oil seal retainer to cylinder block.

• Apply new  engine oil to both oil seal lip and dust seal lip.
• Apply a continuous bead of liquid gasket with the tube presser

(commercial service tool) to rear oil seal retainer as shown in
the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-44, "Recommended Chemical Product and Sealant"

.

CAUTION:

• Replace with a new parts.
• Attaching should be done within 5 minutes after coating.
• Make sure the garter spring is in position and seal lips not

inverted.

NOTE:
Regard both rear oil seal and retainer as an assembly.

17. Install pilot converter.

• With a drift [outer diameter: approx. 33 mm (1.30 in)], press-fit

as far as it will go.

• Press-fit pilot converter with its chamfer facing crankshaft as

shown in the figure.

SEM953E

PBIC2661E

PBIC0899E

SEM537E

EM-134

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CYLINDER BLOCK

18. Install knock sensor.

• Install knock sensor so that connector faces front of the

engine.

• After installing knock sensor, connect harness connector, and

lay it out to rear of the engine.

CAUTION:

• Do not tighten mounting bolts while holding connector.   
• If any impact by dropping is applied to knock sensor,

replace it with new one.

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

block mating surface and the back surface of knock sensor. 

• Make sure that knock sensor does not interfere with other parts.

19. Note the following, assemble in the reverse order of disassembly after this step.

Drive plate

• When installing drive plate to crankshaft, be sure to correctly align crankshaft side guide pin and drive

plate side guide pin hole.

- If these are not aligned correctly, engine runs roughly and “MIL” turns on.
• Install drive plate and reinforcement plate as shown in the fig-

ure.

• Holding ring gear with the ring gear stopper [SST:

KV10117700 (J44716)].

• Tighten the mounting bolts crosswise over several times.

CAUTION:

Make sure that dowel pin is installed at the rear end of
crankshaft.

How to Select Piston and Bearing

INFOID:0000000001325748

DESCRIPTION

 *: For the service parts, the grade for fitting cannot be selected between piston pin and connecting rod. (Only “0” grade is available.) The
information at the shipment from the plant is described as a reference.

• The identification grade stamped on each part is the grade for the dimension measured in new condition.

This grade cannot apply to reused parts.

• For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the

measurement with the values of each selection table.

• For details of the measurement method of each part, the reuse standards and the selection method of the

selective fitting parts, refer to the text.

PBIC0810E

PBIC0910E

Selection points

Selection parts

Selection items

Selection methods

Between cylinder block and 
crankshaft

Main bearing

Main bearing grade
(bearing thickness)

Determined by match of cylin-
der block bearing housing 
grade (inner diameter of hous-
ing) and crankshaft journal 
grade (outer diameter of jour-
nal)

Between crankshaft and con-
necting rod

Connecting rod bearing

Connecting rod bearing grade 
(bearing thickness)

Combining service grades for 
connecting rod big end diame-
ter and crankshaft pin outer di-
ameter determine connecting 
rod bearing selection.

Between cylinder block and pis-
ton

Piston and piston pin assembly
(Piston is available together 
with piston pin as assembly.)

Piston grade
(piston skirt diameter)

Piston grade = cylinder bore 
grade (inner diameter of bore)

Between piston and connecting 
rod*

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CYLINDER BLOCK

EM-135

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HOW TO SELECT PISTON

When New Cylinder Block is Used

Check the cylinder bore grade (“1”, “2” or “3”) on rear side of cylinder
block, and select piston of the same grade.
NOTE:
Piston is available with piston pin as a set for the service part. (Only
“0” grade piston pin is available.)

When Cylinder Block is Reused

1.

Measure the cylinder bore inner diameter. Refer to 

EM-138, "Inspection After Disassembly"

.

2.

Determine the bore grade by comparing the measurement with
the values under the cylinder bore inner diameter of the “Piston
Selection Table”.

3.

Select piston of the same grade.

Piston Selection Table

Unit: mm (in)

NOTE:
• Piston is available together with piston pin as assembly.
• Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no pis-

ton pin grades can be selected. (Only “0” grade is available.)

• No second grade mark is available on piston.

HOW TO SELECT CONNECTING ROD BEARING

When New Connecting Rod and Crankshaft are Used

Check pin diameter grade (“0”, “1” or “2”) on front of crankshaft, and
select connecting rod bearing of the same grade.
NOTE:
There is no grading for connecting rod big end diameter.

When Crankshaft and Connecting Rod are Reused

SEM756G

PBIC0812E

Grade

1

2 (or no mark)

3

Cylinder bore inner diameter

95.500 - 95.510

(3.7598 - 3.7602)

95.510 - 95.520

 (3.7602 - 3.7606)

95.520 - 95.530

(3.7606 - 3.7610)

Piston skirt diameter

95.480 - 95.490

(3.7590 - 3.7594)

95.490 - 95.500

(3.7594 - 3.7598)

95.500 - 95.510

(3.7598 - 3.7602)

SEM452G

EM-136

< SERVICE INFORMATION >

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CYLINDER BLOCK

1.

Measure the connecting rod big end diameter. Refer to 

EM-138, "Inspection After Disassembly"

.

2.

Make sure that the connecting rod big end diameter is within the standard value.

3.

Measure the crankshaft pin journal diameter. Refer to 

EM-138, "Inspection After Disassembly"

.

4.

Determine the grade of crankshaft pin diameter grade by corresponding to the measured dimension in
“Crankshaft pin journal diameter” column of “Connecting Rod Bearing Selection Table”.

5.

Select connecting rod bearing of the same grade.

Connecting Rod Bearing Selection Table

Unit: mm (in)

Unit: mm (in)

Undersize Bearings Usage Guide

• When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod

bearings, use undersize (US) bearings.

• When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing

installed, and grind crankshaft pin so that the connecting rod bearing oil clearance satisfies the standard. 

CAUTION:

In grinding crankshaft pin to use undersize bearings, keep the
fillet R [1.5 - 1.7 mm (0.059 - 0.067 in)].

Bearing undersize table

Unit: mm (in)

HOW TO SELECT MAIN BEARING

When New Cylinder Block and Crankshaft are Used

1.

“Main Bearing Selection Table” rows correspond to bearing
housing grade on rear left side of cylinder block.

Connecting rod big end diameter

55.000 - 55.013 (2.1654 - 2.1659)

Crankshaft

Connecting rod bearing

Crankshaft pin journal diameter

Grade (Mark)

Dimension (Bearing thickness range)

Bearing grade No.

Color

51.968 - 51.974 (2.0460 - 2.0462)

0

1.500 - 1.503 (0.0591 - 0.0592)

STD 0

Black

51.962 - 51.968 (2.0457 - 2.0460)

1

1.503 - 1.506 (0.0592 - 0.0593)

STD 1

Brown

51.956 - 51.962 (2.0455 - 2.0457)

2

1.506 - 1.509 (0.0593 - 0.0594)

STD 2

Green

PBIC1908E

Size

Thickness

US  0.25 (0.0098)

1.626 - 1.634 (0.0640 - 0.0643)

SEM756G