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Nissan Pathfinder. Manual - part 570

CYLINDER BLOCK

EM-119

< UNIT DISASSEMBLY AND ASSEMBLY >

11. Install the connecting rod bearings to the connecting rod and the

connecting rod cap.

• When installing the connecting rod bearings, apply engine oil

to the bearing surface (crankshaft side). Do not apply engine

oil to the back surface (connecting rod and cap side), but thor-

oughly clean it.

• When installing, align the connecting rod bearing protrusion

with the notch of the connecting rod to install.

• Check that the oil holes on the connecting rod and on the cor-

responding bearing are aligned.

12. Install the piston and connecting rod assembly into the corre-

sponding cylinder.

• Position the crankshaft pin corresponding to the connecting

rod to be installed onto the bottom dead center.

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

crankshaft pin.

• Match the cylinder position with the cylinder No. (B) on the

connecting rod to install.

• Install the piston with the piston front mark (A) on the crown

facing the front of the engine (

) using a suitable tool.

CAUTION:

Be careful not to damage the crankshaft pin and cylinder wall, resulting from interference of the

connecting rod big end.

13. Install the connecting rod cap.

• Match the stamped cylinder number marks on the connecting

rod with those on the cylinder cap for installation.

• Install the piston connecting rod assembly and cap so that the

front mark on the cap and piston are facing the front of the

engine.

• Lubricate the threads and seat surfaces with new engine

oil.

14. Check the connecting rod cap bolts before reusing, then install

in their original position in the connecting rod. The bolts should

screw in smoothly by hand.

• Measure the outer diameter of the connecting rod cap bolt as

shown.

15. Tighten the connecting rod nuts in two stages using Tool:

PBIC0266E

(C)

: Oil hole

AWBIA0029ZZ

SEM457G

Outer diameter (d) of the connecting rod bolt
Standard

: 7.90 - 8.00 mm (0.3110 - 0.3150 in)

Limit

: 7.75 mm (0.3051 in)

SEM538G

EM-120

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

CAUTION:

Measure the tightening angle using Tool. Do not measure

visually.

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

bolts and nuts.

• After tightening the nuts, make sure that the crankshaft rotates

smoothly.

• Check the connecting rod side clearance. If beyond the limit, replace the connecting rod and/or crank-

shaft.

16. Install the baffle plate to the main bearing beam.
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 the rear of

the engine.

• Do not tighten the bolts while holding the connector.

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

parts.

CAUTION:

If any impact by dropping occurs to the knock sensor,

replace it with new one.

18. Install the cylinder head. Refer to

EM-89, "Removal and Installation"

19. Install the timing chain. Refer to

EM-62, "Removal and Installation"

20. Install the oil pan. Refer to

EM-37, "Removal and Installation (Upper Oil Pan)"

21. Remove engine from the stand.
22. Install the pilot converter with its chamfer facing crankshaft as

shown.

Stage 1

: 19 - 21 N·m (1.9 - 2.1 kg-m, 14 - 15 ft-lb)

Stage 2

: 90

° - 95° degrees clockwise

Tool number

: KV10112100 (BT-8653-A)

Connecting rod side clearance:
Standard

: 0.20 - 0.35 mm (0.0079 - 0.0138 in)

Limit

: 0.40 mm (0.0157 in)

: Crankshaft side

SEM953E

PBIC0810E

JPBIA0210ZZ

CYLINDER BLOCK

EM-121

< UNIT DISASSEMBLY AND ASSEMBLY >

23. Install the rear oil seal retainer using Tool (A).

a. Loosen the wing nut (B) on the end of the Tool (A).
b. Insert the arbor (D) into the crankshaft pilot hole until the outer

lip (C) of the Tool (A) covers the edge of the crankshaft sealing

surface.

c. Tighten the wing nut (B) to secure the Tool (A) to the crankshaft.

d. Apply sealant to rear oil seal retainer as shown.

Use Genuine Silicone RTV Sealant, or equivalent. Refer to

CAUTION:

• Installation should be done within 5 minutes after apply-

ing liquid gasket.

• Do not fill the engine with engine oil for at least 30 min-

utes after the components are installed to allow the seal-

ant to cure.

e. Lubricate the sealing surface of the new rear main seal with new engine oil.
f.

Slide the new rear main seal (1) over the Tool (A) and onto the

crankshaft.

g. Loosen the wing nut and push the threaded rod into the handle

to remove the Tool (A).

h. Tighten the rear oil seal retainer bolts to specification. Refer to

EM-87, "Removal and Installation of Rear Oil Seal"

24. Install the drive plate. Refer to

EM-131, "Dowel Pin Alignment"

25. Install the engine assembly into the vehicle. Refer to

EM-102, "2WD : Removal and Installation"

(2WD) or

EM-107, "4WD : Removal and Installation"

(4WD).

Inspection

INFOID:0000000009177946

PISTON AND PISTON PIN CLEARANCE

Inner Diameter of Piston Pin Hole

• Measure the inner diameter of piston pin hole (dp).

Outer Diameter of Piston Pin

Tool number

: — (J-47128)

ALBIA0652ZZ

AWBIA0028ZZ

ALBIA0653ZZ

Standard diameter (dp)
Grade No. 0

: 21.993 – 21.999 mm (0.8659 – 0.8661 in)

Grade No. 1

: 21.999 – 22.005 mm (0.8661 – 0.8663 in)

AEM023

EM-122

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

• Measure outer diameter of piston pin (Dp).

Piston and Piston Pin Interference Fit

Standard Interference Fit = (Dp) – (dp)

• If clearance is exceeds specification, replace either or both of piston/piston pin assembly and connecting rod

assembly with reference to specification of each part.

PISTON RING SIDE CLEARANCE

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

feeler gauge.

• If out of specification, replace piston ring assembly. If clearance exceeds maximum limit with new rings,

replace piston.

PISTON RING END GAP

Standard diameter (Dp)
Grade No. 0

: 21.989 – 21.995 mm (0.8657 – 0.8659 in)

Grade No. 1

: 21.995 – 22.001 mm (0.8659 – 0.8662 in)

AEM024

: Engine front

(A)

: Piston grade No.

(B)

: Piston front mark

(C)

: Oil hole

(D)

: Connecting rod front mark

(E)

: Cylinder No.

(F)

: Pin grade No.

(G)

: Crown I.D. code

AWBIA1399ZZ

Standard

: 0.002 – 0.010 mm (0.0001 – 0.0004 in)

Standard Side Clearance
Top ring

: 0.045 - 0.080 mm (0.0018 - 0.0031 in)

2nd ring

: 0.030 - 0.070 mm (0.0012 - 0.0028 in)

Oil ring

: 0.045 - 0.125 mm (0.0018 - 0.0049 in)

Maximum Limit
Top ring

: 0.11 mm (0.0043 in)

2nd ring

: 0.1 mm (0.004 in)

Oil ring

: —

SEM024AA

Content .. 568 569 570 571 ..