engine NISSAN NAVARA 2005 Repair Workshop Manual

ENGINE ASSEMBLY
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Summary of the inspection items:
*1: Transmission/transaxle/AT fluid, power steering fluid, brake fluid, etc.
*2: Check engine oil level 10 minutes after engine stopped.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level (*2)
Other oils and fluid (*1) Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

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lRefer toGI-10, "Components"for symbol marks in the figure.
Disassembly and AssemblyEBS01E6E
DISASSEMBLY
1. Remove engine from the vehicle. Refer toEM-106, "ENGINE ASSEMBLY".
2. Remove clutch cover and disk. (M/T models) Refer toCL-17,
"CLUTCH DISC, CLUTCH COVER AND FLYWHEEL".
3. If they need to be replaced, replace pilot bush (M/T models) or
pilot converter (A/T models).
lUsing the pilot bushing puller [SST], remove the pilot bush (M/
T models) or pilot converter (A/T models) from rear end of
crankshaft.
4. Install engine to engine stand as follows.
a. Remove flywheel (M/T models) or drive plate (A/T models).
lSecure ring gear with the ring gear stopper (A) [SST], then
loosen mounting bolts with TORX socket (B) (commercial ser-
vice tool) and remove them. As an alternative method hold
crankshaft pulley with the pulley holder (commercial service
tool) to remove flywheel (M/T models) or drive plate (A/T
models).
CAUTION:
lDo not disassemble flywheel (M/T models) or drive plate (A/T models).
lDo not place flywheel (M/T models) or drive plate (A/T models) with signal plate facing down.
lWhen handling signal plate, take care not to damage or scratch it.
lHandle signal plate in a manner that prevents it from becoming magnetized.
1. Fuel pump bracket 2. Oil pressure switch 3. Cylinder block
4. Rear oil seal retainer 5. Rear oil seal 6. Top ring
7. Second ring 8. Oil ring 9. Piston pin
10. Snap ring 11. Piston 12. Connecting rod
13. Connecting rod bearing 14. Connecting rod cap 15. Connecting rod nut
16. A/C compressor bracket 17. Oil jet 18. Copper washer
19. Oil jet relief valve 20. Drain plug 21. Thrust bearing
22. Main bearing upper 23. Key 24. Crankshaft
25. Main bearing lower 26. Main bearing cap bolt 27. Main bearing cap
28. Flywheel (M/T models) 29. Pilot bushing (M/T models) 30. Rear plate
31. Pilot converter (A/T models) 32. Drive plate (A/T models) 33. Reinforcement plate (A/T models)
A. Refer toEM-114
.
SEM500G
1 : Flywheel (M/T models) or drive plate (A/T models)
A : KV10105630
B: TORX bit (size: T55)(M/T models) or TORX socket (size: E20)(A/T
models)
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b. Hoist engine and install it to the engine stand (commercial ser-
vice tool).
NOTE:
The figure shows an example of general-purpose engine stand
that can hold mating surface of transmission with drive plate and
rear plate removed.
5. Drain engine oil and engine coolant from inside engine. Refer toLU-6, "
Changing Engine Oil".
6. Drain engine coolant by removing drain plug from inside of
engine.
7. Remove the following parts and related parts. (Only major parts are listed.)
lIntake manifold (Refer toEM-20, "INTAKE MANIFOLD".)
lTurbocharger (Refer toEM-28, "TURBO CHARGER".)
lExhaust manifold (Refer toEM-34, "EXHAUST MANIFOLD".)
lRocker cover (Refer toEM-56, "ROCKER COVER".)
lFuel injector (Refer toEM-44, "INJECTION TUBE AND FUEL INJECTOR".)
lOil pan and oil strainer (Refer toEM-36, "OIL PAN AND OIL STRAINER".)
lWater pump (Refer toCO-21, "WATER PUMP".)
lThermostat and water piping (Refer toCO-23, "THERMOSTAT AND WATER PIPING".)
lSecondary timing chain (Refer toEM-73, "SECONDARY TIMING CHAIN".)
lPrimary timing chain (Refer toEM-79, "PRIMARY TIMING CHAIN".)
lFuel pump (Refer toEM-49, "FUEL PUMP".)
lVacuum pump (Refer toEM-42, "VACUUM PUMP".)
lCamshaft (Refer toEM-59, "CAMSHAFT".)
lCylinder head (Refer toEM-92, "CYLINDER HEAD".)
lOil cooler (Refer toLU-11, "OIL COOLER".)
lAccessory, accessory bracket and mount brackets
8. Remove fuel pump bracket.
9. Remove rear oil seal retainer.
lInsert a flat-bladed screwdriver between main bearing cap and rear oil seal retainer to remove retainer.
10. Remove rear oil seal from rear oil seal retainer. Refer toEM-70, "
OIL SEAL".
lPunch out with a flat-bladed screwdriver.
CAUTION:
Be careful not to damage rear oil seal retainer.
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1 : Cylinder block
2 : Drain plug
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b. Using the industrial use dryer, heat pistons up to 60 to 70°C(140
to 158°F).
c. Using rod with outer diameter of 26 mm (1.02 in), press piston
pins out.
15. Remove main bearing cap bolts.
lWith a TORX socket (size: E14, commercial service tool),
loosen main bearing cap bolts in several stages in the reverse
order of that shown in the figure and remove them.
lBefore loosening main bearing cap bolts, measure crankshaft
end play. Refer toEM-124, "
CRANKSHAFT END PLAY".
16. Remove main bearing caps.
lUsing main bearing cap bolts, remove by rocking bearing cap
back and forth.
17. Remove crankshaft.
18. Remove main bearings and thrust bearings from cylinder block
andmainbearingcaps.
CAUTION:
Check the correct installation locations of removed parts.
Store them so they do not get mixed up.
19. Remove oil jet.
20. Remove oil jet relief valve.
ASSEMBLY
1. Blow air sufficiently to inside engine coolant passage, engine oil passage, crankcase and cylinder bore to
remove foreign matter.
CAUTION:
Use a goggles to protect your eye.
PBIC0089E
EMM0072D
JEM200G
JEM201G

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2. Install drain plug to cylinder block.
lApply liquid gasket to drain plug.
Use Genuine Liquid Gasket or equivalent
3. Install oil jet relief valve.
4. Install oil jet.
lAlign knock pin on back of oil jet with hole on block when
installing oil jet.
5. Install main bearings and thrust bearings.
a. Remove contamination, dust and engine oil from bearing mount-
ing positions on cylinder block and main bearing caps.
b. Install thrust bearings on both sides of No. 3 housing on cylinder
block.
lInstall thrust bearings with oil groove facing to crankshaft arm
(outside).
c. Being careful with the direction, install main bearings.
lInstall main bearings with the oil holes and grooves onto the
cylinder block side, and those without oil holes and grooves
onto the main cap side.
lWhile installing bearings, apply engine oil to bearing surfaces
(inside). Do not apply engine oil to rear surfaces, but clean
them completely.
lAlign stopper notches on bearings to install them.
lMake sure that the oil holes on the cylinder block body are
mated with the oil hole positions on the bearings.
6. Install crankshaft to cylinder block.
lMake sure crankshaft rotates smoothly by hand.
1 : Cylinder block
2 : Drain plug
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7. Install main bearing caps.
lIdentify main bearing caps by the punched mark. Install cor-
rectly matching the journal No. on the bearing cap and the
journal with the front mark facing forward.
lMain bearing caps are commonly processed with the cylinder
block. Therefore, caps and cylinder block should be replaced
as a set.
8. Check the main bearing cap bolts for deformation. Refer toEM-
133, "MAIN BEARING CAP BOLT DEFORMATION".
9. With the TORX socket (size: E14, commercial service tool),
tighten the main bearing cap bolts according to the following
procedure:
a. Apply engine oil to the threaded part and seat surface of each
bolt.
b. Tighten all bolts in numerical order shown in the figure.
c. Put alignment marks (with paint) on each bolt and the main
bearing cap, all in the same direction. (When using a protractor)
d. Then, tighten 90 degrees. (angle tightening)
CAUTION:
Always use either the angle wrench [SST] or protractor dur-
ing angular tightening. Avoid tightening based on visual
checks alone.
lAfter tightening bolts to specified torque, make sure that
crankshaft rotates smoothly.
lCheck crankshaft end play. Refer toEM-124, "CRANKSHAFT
END PLAY".
10. Check the outer diameter of connecting rod bolts. Refer toEM-
133, "CONNECTING ROD BOLT DEFORMATION".
11. Install piston to connecting rod.
a. Using the snap ring pliers, install snap rings to groove on piston rear side.
lFit snap ring correctly into grooves.
b. Install pistons to connecting rods.
lUsing the industrial use dryer, heat pistons up to approx. 60 to
70°C(140to158°F) until piston pin can be pressed down by
finger touch. Then insert piston pin into piston and connecting
rod from front side of piston toward rear.
JEM225G
: 27.0 N·m (2.8 kg-m, 20 ft-lb)
JEM200G
JEM226G
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lAssemble piston and connecting rod with front mark of piston
head and cylinder No. stamped on connecting rod being posi-
tioned as shown in the figure.
c. Install snap ring to front side of piston.
lRefer to above step a for precaution on snap ring installation.
lAfter installation, check connecting rods for smooth move-
ment.
12. Use the piston ring expander (commercial service tool) to install piston rings.
CAUTION:
When installing, prevent piston from being damaged.
lInstall top ring and second ring with punched mark surfaces
facing upward.
lInstall rings so that three closed gap position 120 degrees
apart one another.
lClosed gaps do not need to face in a specific directions, as
long as each are positioned 120 degrees apart.
13. Install connecting rod bearing to connecting rod and cap.
lWhile installing connecting rod bearing, apply engine oil to
bearing surfaces (inside). Do not apply engine oil to rear sur-
faces, but clean them completely.
lAlign protrusions on connecting rod bearings with connecting
rod cut-outs to install connecting rod bearings.
14. Install piston and connecting rod assembly to crankshaft.
lMove crankshaft pin to be assembled to BDC.
lAlign cylinder position with cylinder No. on connecting rod to
install piston and connecting rod assembly.
lUsing the piston ring compressor [SST] or suitable tool, install
piston and connecting rod assembly with front mark on piston
head facing toward the front side of engine.
CAUTION:
When installing piston and connecting rod assembly, pre-
vent the big end of connecting rod from interfering with
oil jet.
MBIA0024E
Punched mark:
To p r i n g : R TO P
Second ring : R2ND
JEM228G
JEM229G
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15. Install connecting rod caps and mounting nuts.
lAlign cylinder No. stamped on connecting rod with that on cap
to install connecting rod cap.
lMake sure that the front mark on connecting rod cap faces
towards the front of the engine.
16. Tighten connecting rod nuts according to the following procedure:
a. Apply engine oil on bolt threads and seat surface of nuts.
b. Tighten bolts.
c. Loosen completely.
d. Tighten bolts.
e. Tighten 120 degrees. (angle tightening)
lAlways use either the angle wrench [SST] or protractor
during angular tightening. Avoid tightening based on
visual checks alone.
lAfter tightening nuts, make sure that crankshaft rotates
smoothly.
lCheck connecting rod side clearance. Refer toEM-125,
"CONNECTING ROD SIDE CLEARANCE".
17. Press fit rear oil seal into rear oil seal retainer.
lUsing the drift [105 mm (4.13 in) dia.], press fit so that the
dimension is as specified in the figure.
lAvoid inclined fitting. Force fit perpendicularly.
MBIA0024E
: 29.4 N·m (3.0 kg-m, 22 ft-lb)
:0N·m(0kg-m,0in-lb)
: 19.6 N·m (2.0 kg-m, 14 ft-lb)
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JEM232G

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18. Install rear oil seal retainer to cylinder block.
lApply new engine oil to the oil and dust seal lips.
lApply liquid gasket to rear oil seal retainer using the tube
presser [SST: WS39930000] as shown in the figure.
Use Genuine Liquid Gasket or equivalent.
19. Press fit pilot bushing into crankshaft (M/T models).
lUsing the drift with outer diameter of 19 mm (0.75 in), press fit
pilot bushing until it stops.
20. Press fit pilot converter into crankshaft (A/T models).
lUsing the drift with outer diameter of 33 mm (1.30 in), press fit pilot converter until it stops.
lPress fit pilot converter with its chamfer facing crankshaft as
showninthefigure.
21. Install fuel pump bracket.
lAlign the bracket with the dowel pins on cylinder block to
install.
lThe two bolts used for dowel pins have a longer shanks than
the other two.
22. Install parts to engine in the reverse order of disassembly.
23. Remove engine from engine stand in the reverse order of assembly.
24. Install flywheel (M/T models).
JEM233G
JEM234G
SEM537E
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lWhen installing flywheel to crankshaft, be sure to correctly
align crankshaft side dowel pin and flywheel side dowel pin
hole.
CAUTION:
If these are not aligned correctly, engine runs roughly
and “MI” turns on.
lThere is a mating mark on the clutch cover side of flywheel.
Refer it during installation.
lHolding ring gear with ring gear stopper [SST], tighten secur-
ing bolts with TORX socket (size: T55, commercial service
tool).
lTighten bolts uniformly in a crisscross manner.
–If these are not aligned correctly, engine runs roughly and “MI” turns on.
25. Install drive plate (A/T models).
lWhen installing drive plate to crankshaft, be sure to correctly align crankshaft side dowel pin and drive
plate side dowel pin hole.
CAUTION:
If these are not aligned correctly, engine runs roughly and “MI” turns on.
lInstall drive plate and reinforcement plate as shown in the fig-
ure.
lHolding ring gear with ring gear stopper [SST: KV10105630],
tighten securing bolts with TORX socket (size: E20) (commer-
cial service tool).
lTighten bolts uniformly in a crisscross manner.
26. Install in the reverse order of removal.
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