Nissan Pathfinder. Manual - part 569

CYLINDER BLOCK

EM-115

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2. Install the cylinder block drain plugs (if removed). 

• Apply sealant to the thread of the water drain plug (B), connec-

tor bolt (C) and water drain plug (D), (if removed).

CAUTION:

Do not reuse copper sealing washers.

NOTE:

• For Canada, water drain plug (B) is a block heater, not a

water drain plug.

• Install copper sealing washers (E) and (A), (if removed). 

• Use Genuine High Performance Thread Sealant or equiva-

lent. Refer to 

GI-22, "Recommended Chemical Products and

Sealants"

.

• Tighten each plug and connector bolt to specifications.

3. Install the oil jets.

• Insert the oil jet dowel pin into the cylinder block dowel pin

hole, and tighten the bolts.

4. Install the main bearings and the thrust bearings.
a. Remove dust, dirt, and engine oil on the bearing mating sur-

faces of the cylinder block and the main bearing cap.

b. Install the thrust bearings to both sides of the No. 3 journal hous-

ing on the cylinder block and the main bearing cap.

• Install the thrust bearings with the oil groove facing the crank-

shaft arm (outside).

• Install bearing with a projection on one end on cylinder block

and bearing with a projection at center on cap. Align each pro-

jection with mating notch.

: Front

AWBIA1194GB

Part

Washer

Tightening torque

(B) (except Canada)

Yes

62.0 N·m (6.3 kg-m, 46 ft-lb)

(B) (for Canada)

Yes

39.0 N·m (4.0 kg-m, 29 ft-lb)

(C)

Yes

27.0 N·m (2..8 kg-m, 20 ft-lb)

(D)

Yes

78.0 N·m (8.0 kg-m, 58 ft-lb)

PBIC0898E

PBIC0807E

EM-116

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

5. Set the upper main bearings in their proper positions on the cyl-

inder block.

• Confirm the correct main bearings are used. Refer to 

EM-121,

"Inspection"

.

6. Instructions for the re-use of the main bearing cap bolts.

• A plastic zone tightening method is used for tightening the

main bearing cap bolts. Measure (d1) and (d2) as shown. 

• For (d2), select the minimum diameter in the measuring area.

• If the difference between (d1) and (d2) exceeds the limit,

replace the bolts for assembly. 

7. After installing the crankshaft, lower main bearings, main bear-

ing caps, main bearing beam, and bearing cap bolts. Tighten the

bearing cap bolts in the numerical order as shown.

a. Make sure that the front marks on the main bearing beam faces

the front of the engine.

b. Prior to tightening all the bearing cap bolts, place the bearing

beam in its proper position by shifting the crankshaft in the axial

position.

c.

After tightening the bearing cap bolts, make sure the crankshaft

turns smoothly.

d. Lubricate the threads and seat surfaces of the bolts with new

engine oil.

e. Tighten the bolts in two stages:

CAUTION:

: Engine front

SEM175F

Limit (d1 - d2)

: 0.11 mm (0.0043 in)

SEM177F

SEM851E

SEM456G

CYLINDER BLOCK

EM-117

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Measure the tightening angle using Tool. Do not measure visu-

ally. 

8. Measure crankshaft end play.

• If beyond the limit, replace the thrust bearing with a new one.

9. Install the piston to the connecting rod. 
a. Using suitable snap ring pliers, install the snap ring fully into the

pin-groove of the piston rear side. 

CAUTION:

Do not reuse snap rings.

b. Install the piston to the connecting rod.

• Heat the piston until the piston pin can be pushed in by hand

without excessive force [approx. 60 - 70

°C (140 - 158°F)].

From the front to the rear, insert the piston pin into the piston

and through the connecting rod.

WARNING:

Pistons contain heat. When working, wear protective

equipment to avoid getting burned.

Stage 1

: 35.3 N·m (3.6 kg-m, 26 ft-lb)

Stage 2

: 90

° degrees clockwise

Tool number

: KV10112100 (BT-8653-A)

PBIC0096E

Standard

: 0.10 - 0.25 mm (0.0039 - 0.0098 in)

Limit

: 0.30 mm (0.0118 in)

SEM852E

(A)

: Piston front mark

(B)

: Oil hole

(C)

: Connecting rod front mark

(D)

: Cylinder No. 

AWBIA0026ZZ

SEM965A

EM-118

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

• Assemble so that the piston front mark (B) on the crown and

the oil hole (C), connecting rod front mark (D) and Cylinder No.

(E) on the connecting rod are positioned as shown.

c.

Install the snap ring into the front of the piston pin-groove. 

• After installing, check that the connecting rod pivots smoothly

on the pin.

CAUTION:

Do not reuse snap rings.

10. Using a piston ring expander, install the piston rings. 

CAUTION:

• Be careful not to damage the piston.

• When the piston rings are not replaced, remount the rings

in their original positions.

• When replacing the piston rings, those without stamped

surface (A) can be mounted either side up.

• Install the second ring with the stamped surface (B) facing

upward. If the ring is not stamped it can face in either

direction.

• Position each ring with the gap as shown, referring to the pis-

ton front mark.

: Engine front

(A)

: Piston grade number

(F)

: Pin grade number

(G)

: Crown I.D. code

AWBIA1399ZZ

PBIC0260E

(A)

: Top ring

(B)

: Second ring

JPBIA0263ZZ

PBIC0808E