Nissan Frontier. Manual - part 724

 

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Nissan Frontier. Manual - part 724

 

 

ENGINE UNIT

EM-85

< UNIT DISASSEMBLY AND ASSEMBLY >

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b. Heat piston to 60

° to 70°C (140° to 158°F) with an industrial use

drier or equivalent.

c. Push out piston pin with stick of outer diameter approximately 19

mm (0.75 in).

20. Remove lower cylinder block bolts.

• Before loosening lower cylinder block bolts, measure crankshaft end play. Refer to 

EM-91, "Inspection

After Disassembly"

.

• Loosen lower cylinder block bolts in reverse order as shown in

several different steps.

NOTE:

Use socket (size E14) for bolts No. 1 to 10.

21. Remove lower cylinder block.

• Use Tool to cut liquid gasket for removal.

CAUTION:

Be careful not to damage the mounting surfaces.

22. Remove crankshaft.

CAUTION:

• Be careful not damage or deform signal plate mounted on

crankshaft.

• When setting crankshaft on a flat floor surface, use a

block of wood to avoid interference between signal plate

and the floor surface.

• Do not remove signal plate unless it is necessary to do

so.

NOTE:

When removing or installing signal plate, use socket (size T30).

23. Pull rear oil seal out from rear end of crankshaft.

NOTE:

PBIC1639E

PBIC0262E

PBIC2718E

Tool number

: KV10111100 (J-37228)

SBIA0275E

EM-86

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ENGINE UNIT

When replacing rear oil seal without removing lower cylinder block, use a suitable tool to remove the oil

seal installed between crankshaft and cylinder block out.

CAUTION:

Be careful not to damage crankshaft and cylinder block.

24. Remove main bearings and thrust bearings from cylinder block and lower cylinder block.

CAUTION:

• Do not drop main bearing, or scratch the surface.

• Identify installation positions, and store them without mixing them up.

ASSEMBLY

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

remove any foreign material.

WARNING:

Use approved safety glasses to protect your eyes.

2. Apply Silicone RTV Sealant to the drain plugs. Install the drain

plugs on the cylinder block. 

• Use Genuine Silicone RTV Sealant, or equivalent. Refer to 

GI-

21, "Recommended Chemical Products and Sealants"

.

CAUTION:

Do not reuse copper sealing washer.

NOTE:

For Canada, the cylinder block drain plug (3) as shown, is not a

cylinder block drain plug but a block heater.

3. Install main bearings and thrust bearings as follows:
a. Remove dust, dirt, and engine oil from the bearing mating sur-

faces of the cylinder block and lower cylinder block.

b. Install the thrust bearings to both sides of the No. 3 main bearing

journal on the cylinder block.

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

shaft arm (outside). 

AWBIA1524ZZ

PBIC0264E

ENGINE UNIT

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c. Install the main bearings paying attention to their position and

direction.

• The main bearing with an oil hole and groove goes on the cyl-

inder block. The one without them goes on the lower cylinder

block.

• Only the main bearing (on the cylinder block) for No. 3 journal

has different specifications.

• Before installing the bearings, apply engine oil to the bearing

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

but thoroughly clean it.

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

• Make sure that the oil holes on the cylinder block and those on

the corresponding bearing are aligned.

4. Install the signal plate to the crankshaft.
a. Position the crankshaft and signal plate using a positioning

dowel pin, and tighten the signal plate bolts to specification.

b. Remove the dowel pin.

CAUTION:

Be sure to remove dowel pin before installing the crank-

shaft.

NOTE:

Dowel pins for the crankshaft and signal plate are supplied as a set for each.

5. Install crankshaft to the cylinder block.

• While turning the crankshaft by hand, check that it turns smoothly. 

CAUTION:

Do not install rear oil seal at this time.

6. Apply a continuous bead of liquid gasket using Tool to positions

shown and install the lower cylinder block.

• Use Genuine RTV Silicone Sealant, or equivalent. Refer to

GI-21, "Recommended Chemical Products and Sealants"

.

CAUTION:

After liquid gasket is applied, the lower cylinder block

installation must be finished within 5 minutes.

NOTE:

Cylinder block and lower cylinder block are machined together.

Neither of them can be replaced separately.

7. Tighten lower cylinder block bolts in three steps in the order as

shown using Tool.

NOTE:

• Apply new engine oil to threads and seat surfaces of the bolts.

CAUTION:

There are more processes to complete the tightening of

lower cylinder bolts. However stop procedure after step 1

and install rear oil seal.

SBIA0277E

Signal plate bolts
Type 1

: 18.5 N·m (1.9 kg-m, 14 ft-lb)

Type 2

: 22.0 N·m (2.2 kg-m, 16 ft-lb)

Tool number

: WS39930000 (   —   )

SBIA0278E

WBIA0160E

Tool number

: KV10112100 (BT-8653-A)

KBIA0063E

EM-88

< UNIT DISASSEMBLY AND ASSEMBLY >

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ENGINE UNIT

Apply new engine oil to new rear oil seal and install it using

a suitable tool.

CAUTION:

• Do not touch grease applied onto oil seal lip.

• Be careful not to damage crankshaft and/or cylinder

block.

• Press fit oil seal straight to avoid causing burrs or tilting.

• Install new oil seal in the direction shown.

CAUTION:

Check tightening angle using Tool. Do not tighten by visual

inspection. 

• Wipe off completely any protruding Silicone RTV Sealant on

the exterior of engine.

• Check crankshaft side clearance. Refer to 

EM-108, "Standard

and Limit"

.

• After installing the bolts, make sure that the crankshaft can be

rotated smoothly by hand.

8. Install the piston to the connecting rod. Assemble the components in their original positions.
a. Using a snap ring pliers, install the snap ring into the grooves of the piston's rear side. 

• Insert the piston pin snap ring fully into groove. 

Lower cylinder block bolts
Step 1 (bolts 11 - 22)

: 25.1 N·m (2.6 kg-m, 19 ft-lb)

Step 2 (bolts 1 - 10)

: 39.2 N·m (4.0 kg-m, 29 ft-lb)

Step 3 (bolts 1 - 10)

: 60

° - 65° (target: 60°)

SBIA0280E

SEM715A

SBIA0281E

Tool number

: KV10112100 (BT-8653-A)

WBIA0619E

 

 

 

 

 

 

 

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