Nissan Titan. Manual - part 323

EM-96

< UNIT DISASSEMBLY AND ASSEMBLY >

ENGINE UNIT

1. Fully air-blow the coolant and oil passages in the cylinder block, cylinder bore, and crankcase to remove

any foreign material.

WARNING:

Use goggles to protect your eyes.

2. Install each plug to the cylinder block (only screw-type plugs are

shown).

• Apply liquid gasket. 

Use Genuine Thread Sealant or equivalent. Refer to 

GI-21,

"Recommended Chemical Products and Sealants"

.

• Tighten each plug as specified below.

CAUTION:

Do not reuse copper sealing washers.

NOTE:

For cylinder block heater equipped engines, water drain plug

(C) shown is not a water drain plug but a cylinder block heater.

3. Install main bearings and thrust bearings.
a. Remove any dust, dirt, and oil on the bearing mating surfaces of

the cylinder block and main bearing caps.

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

on the cylinder block and main bearing caps

• Install thrust bearings with the oil groove facing the crankshaft

arm (outside). 

• Install thrust bearings with a protrusion in the center on the

main bearing caps.

c.

Install main bearings paying attention to the direction.

• Install the one with oil holes onto the cylinder block and the

one without oil holes onto the main bearing cap.

• Before installing bearings, apply engine oil to bearing surface

(inside). Do not apply oil to the back surface, but thoroughly

clean it.

• When installing, align the bearing stopper to the notch.

• Ensure the oil holes on the cylinder block and those on the

corresponding bearing are aligned.

WBIA0419E

Part

Washer

Tightening torque

A

Yes

53.9 N·m (5.5 kg-m, 40 ft-lb)

B

No

19.6 N·m (2.0 kg-m, 15 ft-lb)

C

Yes

62.7 N·m (6.4 kg-m, 46 ft-lb)

D

Yes

62.7 N·m (6.4 kg-m, 46 ft-lb)

Cylinder block heater

Yes

73.5 N·m (7.5 kg-m, 54 ft-lb)

PBIC0093E

PBIC0094E

ENGINE UNIT

EM-97

< UNIT DISASSEMBLY AND ASSEMBLY >

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4. Install pilot converter to the crankshaft using suitable tool.
5. Install crankshaft to the cylinder block.

• While turning crankshaft by hand, make sure it turns smoothly. 

6. Install main bearing caps.

• Align the identification number to the journal position to install. 

• Install it with the front mark (indicated by the arrow) facing the

front of engine. 

• Tap caps lightly to seat them in the installation position.

7. Follow the steps below to tighten each main bearing cap bolt.
a. Apply engine oil to threads and seating surfaces of bolts, and

tighten all bolts temporarily.

b. Measure tightening angle using Tool.

CAUTION:

Measure tightening angle using Tool. Do not measure visu-

ally. 

• Rotate crankshaft by hand after bolts are tightened. Check if it rotates smoothly.

• Check crankshaft side clearance. Refer to 

EM-101, "Inspection After Disassembly"

.

8. Install the rear oil seal.

EMP0569D

KBIA2533E

Main bearing cap bolts in 
order of 1 to 10

: 39.2 N·m (4.0 kg-m, 29 ft-lb)

Main bearing cap sub 
bolts in order of 11 to 20

: 29.4 N·m (3.0 kg-m, 22 ft-lb)

PBIC0090E

Tool number

: KV10112100 (BT-8653-A)

Main bearing cap bolts in 
order of 1 to 10

: 40

°

Main bearing cap sub bolts 
in order of 11 to 20

: 30

°

Side bolts in order of 21 to 
30

: 49 N·m (5.0 kg-m, 36 ft-lb)

WBIA0597E

EM-98

< UNIT DISASSEMBLY AND ASSEMBLY >

ENGINE UNIT

• Install the rear oil seal so that each seal lip is oriented as

shown.

- (A): Oil seal lip

- (B): Dust seal lip
-

: Engine inside

-

: Engine outside

• Press in rear oil seal (1) to the position as shown.

- (B): Rear oil seal retainer rear end face

• Press-fit the rear oil seal using suitable tool.

CAUTION:

• Do not damage the crankshaft or cylinder block.

• Press-fit the oil seal straight to avoid causing burrs or

tilting.

• Do not touch grease applied onto the oil seal lip.

• Do not damage or scratch the outer circumference of

the rear oil seal.

• Tap until flattened with the front edge of the oil seal retainer. 

9. Install rear oil seal retainer.

• Apply a continuous bead of liquid gasket using Tool to rear oil

seal retainer as shown.

Use Genuine RTV Silicone Sealant or an equivalent. Refer

to 

GI-21, "Recommended Chemical Products and Sealants"

.

10. Install the piston to the connecting rod. 
a. Install the snap ring to the grooves of the piston rear side.

• Insert it fully into the groove to install. 

b. Install the piston to the connecting rod.

• Heat piston until piston pin can be pushed in by hand without excess force [approx. 60

° to 70 C° (140° to

158 

°F)]. From the front to the rear, insert the piston pin into the piston and the connecting rod.

JPBIA0054ZZ

(a)

: 0 - 0.5 mm (0 - 0.020 in)

JPBIA0152ZZ

WBIA0438E

A

: Protrusion

b

: 4.0 - 5.6 mm (0.157 - 0.220 in)

c

: 3.4 - 4.4 mm (0.134 - 0.173 in)

Tool number

: WS39930000 (   —   )

AWBIA0880ZZ

ENGINE UNIT

EM-99

< UNIT DISASSEMBLY AND ASSEMBLY >

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• Assemble so that the front mark on the piston crown and the

oil holes and cylinder No. on the connecting rod are positioned

as shown.

WARNING:

Piston contains heat. When working, wear protective

equipment to avoid getting burned.

c. Install the snap ring to the grooves of the piston front side. 

• Insert it fully into the groove to install. 

• After installing, make sure connecting rod moves smoothly.

11. Install piston rings. 

CAUTION:

Do not damage piston.

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

ton front mark.

• Install the second ring with the stamped surface facing

upward.

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

connecting rod cap.

• When installing the connecting rod bearings, apply engine oil

to the bearing surface (inside). Do not apply oil to the back

surface, but thoroughly clean it.

• When installing, align the connecting rod bearing stopper pro-

trusion with the cutout of the connecting rod to install.

• Check that the oil holes on the connecting rod and those on

the corresponding bearing are aligned.

13. Install the piston and connecting rod assembly to the crankshaft

using Tool.

• Position the crankshaft pin corresponding to the connecting

rod to be installed onto bottom dead center. 

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

crankshaft pin. 

• Match the cylinder position with the cylinder No. on the con-

necting rod to install. 

• 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.

KBIA2534E

Stamped mark

Second ring

: 2N

PBIC0100E

PBIC0266E

Tool number

: EM03470000 (J-8037)

WBIA0626E