2002 NISSAN TERRANO engine oil

Unit: mm (in)
GradePiston crown
depressionGasket thick-
ness*1No. of notches
1Less than þ0.078
(þ0.0031)*20.65 (0.0256) 1
2More than þ0.078
(þ0.0031)*30.70 (0.0276) 2
*1: Thickness of gasket tightened with head bolts
*2: Indicates values such as þ0.080 mm (þ0.0031 in).
*3: Indicates values such as þ0.075 mm (þ0.0030 in).
2. Install idler gear and idler shaft.
ICheck that the counter marks with cam gear, ªAAº and ªBBº, are
located on the front side of the engine.
Refer to EM-52.
CAUTION:
Since idler gear cannot be installed or removed with cylinder
head assembly mounted on the engine because of interfer-
ence with gear case, make sure that there are no reverse
installations or uninstalled parts.
3. Install cylinder head assembly.
1) Attach gasket onto the rear of gear case.
2) Install O-ring to the rear of gear case.
3) Align cylinder head assembly with dowel pin of cylinder block
and install.
CAUTION:
IMake sure the O-ring does not fall off. Be careful not to
drop the O-ring.
IDo not damage gasket located at the front.
4. Position cylinder head assembly close to the rear of the gear
case.
1) Install cylinder head bolts to the front and rear of cylinder head
respectively, and tighten to the specified torque.
:40-49N×m (4.0 - 5.0 kg-m, 29 - 36 ft-lb)
2) Loosen cylinder head bolts completely.
3) Install gear case mounting bolts to 2 positions shown by arrows
in the figure, and tighten to the specified torque.
: Less than 9.8 N×m (1.0 kg-m, 87 in-lb)
5. Tighten cylinder head bolts in the order indicated in the figure.
1) Apply engine oil to installation bolt threads and washers.
2) Tighten bolts to 98 to 102 N×m (10.0 to 10.5 kg-m, 73 to 75 ft-
lb).
3) Loosen bolts completely until the torque becomes 0 N×m(0
kg-m, 0 in-lb).
CAUTION:
For procedure 3), loosen bolts in the reverse order as indi-
cated in the figure.
4) Tighten bolts to 40 to 44 N×m (4.0 to 4.5 kg-m, 29 to 32 ft-lb).
5) Tighten bolts at the angle of 90 to 95É (target is 95É). (Angle
tightening)
FEM061
FEM062
FEM055
CYLINDER HEADZD
Installation (Cont'd)
EM-55

For details of values (q1toq10), refer to EM-87, ªValve Seatº in
ªSERVICE DATA AND SPECIFICATIONS (SDS)º.
VALVE SPRING RIGHT ANGLE
Position a straightedge to valve spring, turn the spring, and mea-
sure the maximum clearance value between top surface of spring
and the straightedge
Limit: 2.4 mm (0.0945 in)
VALVE SPRING FREE LENGTH AND COMPRESSIVE
LOAD
Using valve spring tester, check the following.
Free length: 55.43 mm (2.1823 in)
Installation height: 40.8 mm (1.6063 in)
Installation load: 180 - 206 N (18.4 - 21.0 kg, 40.6 -
46.3 lb)
Height at valve open: 32.3 mm (1.2717 in)
Load at valve open: 336 - 372 N (34.3 - 37.9 kg, 75.6 -
83.6 lb)
Assembly
1. Install valve guides, referring to EM-60, ªVALVE SEAT
REPLACEMENTº.
2. Install valve seats, referring to EM-60, ªVALVE SEAT CON-
TACTº.
3. Using valve oil seal drift (SST), install valve oil seals referring
to the dimension shown in the figure.
IThe figure shows the dimension before valve spring seats are
installed.
4. Install valve spring seats.
5. Install valves.
IInstall the valves with bigger openings to intake valve side.
INote that valve layout here is different from that of conventional
the engine.
YEM035
FEM077
FEM078
FEM079
CYLINDER HEADZD
Inspection (Cont'd)
EM-61

Engine room (Left)
3. Remove air duct and air cleaner case.
4. Disconnect vacuum hose to the vehicle on the engine.
5. Disconnect harness connectors from alternator and air com-
pressor.
6. Remove alternator.
7. After removing refrigerant, remove pipes of air compressor and
inlet/outlet.
8. Disconnect heating hose, install blank cap to hose to prevent
coolant from leaking.
9. Remove heating pipe.
10. Remove heat insulator.
11. Remove catalytic converter.
Engine room (Right)
12. Remove power steering reservoir tank from bracket, and fix it
to the vehicle with a rope.
CAUTION:
Keep the reservoir tank level when fixing to prevent oil leak.
13. Remove fuel feed and return hoses.
CAUTION:
Install blank caps immediately to avoid fuel leakage.
14. Remove all harness connectors on the engine, and move har-
nesses to the side of the vehicle.
Vehicle underfloor
15. Remove starter motor.
16. Detach A/T oil cooler pipes from oil pan. (A/T model)
17. Remove rear propeller shaft.
18. Remove mounting bolts to secure the engine to transmission.
1) Remove torque converter installation bolt. (A/T model)
2) Lift transmission bottom with transmission jack, and remove
rear mount members from the vehicle.
3) Lower transmission with the jack, and remove upper mounting
bolts securing the engine to transmission.
4) Lift transmission with the jack, and reinstall rear mount mem-
bers to the vehicle.
5) Position the jack to the front side of transmission.
6) Remove remaining mounting bolts securing the engine to trans-
mission.
Removal operation
19. Remove air conditioner high pressure pipes at the rear of the
engine room.
IThis is due to some inconvenience in the rear slinger installa-
tion.
20. Install the engine slingers (standard service part) to front-left
and rear-right.
:25-28N×m (2.5 - 2.9 kg-m, 18 - 20 ft-lb)
WARNING:
For engines without engine slingers, attach proper slingers
and bolts described in the PARTS CATALOG.
FEM082
ENGINE REMOVALZD
Removal (Cont'd)
EM-64

21. Hook hoists to slingers to secure the position.
22. Remove installation nuts for left and right engine mount insula-
tors.
23. While adjusting position frequently, hoist and remove the
engine.
CAUTION:
IWhile performing operation, check that all necessary wires
and pipes are disconnected.
IAvoid interference with parts on the vehicle.
Installation
Install the engine in the reverse order of the removal procedure.
IKeep each mount insulator from oil adherence and damage.
IWhile keeping each mount insulator free from twisting, tighten
mounting bolts and nuts for the engine mount.
Inspection
IBefore starting the engine, check coolant level and grease
amount, and if necessary, refill them to the specified level.
IStart the engine, and check that there is no abnormal noise or
vibration.
IWarm up the engine to the sufficient temperature, and check
that there is no leakage of coolant, greases, fuel, or exhaust
gas.
YEM042
ENGINE REMOVALZD
Removal (Cont'd)
EM-65

3) Install engine sub-attachment (SST) to the rear side of cylinder
block.
IAlign knock pin on cylinder block with pin hole on attachment
to install engine sub-attachment.
IMounting bolts are provided with engine sub-attachment.
4) Install engine attachment (SST).
IUse commercially available M12 mounting bolts and nuts (4
sets) with strength grade of 9T (minimum).
5) Hoist engine and install it to the engine stand (SST).
IEngine attachment and engine sub-attachment can be installed
to engine stand before engine installation.
4. Drain engine oil and coolant from engine.
5. Remove the following parts and related parts. (Only major parts
are listed.)
IAccessory belt
ICatalytic converter
ITurbocharger
IExhaust manifold
IInjection tube
IIntake manifold
IRocker cover
IOil pan (upper/lower)
IWater pump
IThermostat and water pipes
IVacuum pump
IInjection tube
ITiming chain
IElectronic high pressure fuel injection pump
ITiming gear
IHigh pressure injection nozzle assembly
ICamshaft
ICylinder head
IOil cooler
IAccessory and accessory brackets
6. Remove rear oil seal and retainer assembly.
IInsert flat-bladed screwdriver between lower cylinder block and
rear oil seal retainer to remove the assembly.
INo part No. is given to oil seal.
FEM083
FEM084
CYLINDER BLOCKZD
Disassembly (Cont'd)
EM-68

3) Using rod with outer diameter of 30 mm (1.18 in), press piston
pins out.
11. Remove lower cylinder block.
IThe lower cylinder block is the lower part of the cylinder block,
which works as the main bearing cap (beam) and oil pan
mounting face.
1) Remove mounting bolts for engine sub-attachment shown by
arrows in the figure.
2) Loosen and remove mounting bolts in the reverse order shown
in the figure.
3) Insert flat-bladed screwdriver into 5 locations shown by arrows
in the figure. Lift lower cylinder block evenly, and remove liquid
gasket.
CAUTION:
Prevent mating faces from being damaged.
4) When removing lower cylinder block, use slot to prevent dowel
pin from interfering with engine sub-attachment.
INo part No. is given to lower cylinder block, because it is
machined with the cylinder block.
12. Remove crankshaft.
13. Remove main bearings and thrust bearings from cylinder block
and lower cylinder block.
CAUTION:
Check mounting positions. Keep them to avoid confusion.
FEM090
FEM091
FEM092
FEM093
CYLINDER BLOCKZD
Disassembly (Cont'd)
EM-70

INew connecting rods are classified into 8 weight classes at
factory. The same class connecting rods are used on a engine.
Weight grade symbol Weight class g (oz)
H 1,261 - 1,264 (44.5 - 44.6)
I 1,264 - 1,267 (44.6 - 44.7)
K 1,267 - 1,270 (44.7 - 44.8)
L 1,270 - 1,273 (44.8 - 44.9)
M 1,273 - 1,276 (44.9 - 45.0)
O 1,276 - 1,279 (45.0 - 45.1)
P 1,279 - 1,282 (45.1 - 45.2)
S 1,282 - 1,285 (45.2 - 45.3)
CYLINDER BLOCK TOP SURFACE DISTORTION
IUsing scraper, remove gasket installed onto cylinder block sur-
face. Remove contamination such as oil, scale, and carbon.
CAUTION:
Keep broken pieces of gasket clear of oil and coolant pas-
sages.
IUse straightedge and feeler gauge to check block upper sur-
face for distortion.
Limit: 0.1 mm (0.004 in)
MAIN BEARING HOUSING INNER DIAMETER
IInstall main bearing caps without main bearings. Tighten
mounting bolts to the specified torque.
IUse bore gauge to measure main bearing housing inner diam-
eter.
Standard:
74.981 - 75.000 mm (2.9520 - 2.9528 in) dia.
IIf out of specification, replace cylinder block and lower cylinder
block.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder bore inner diameter
IUsing bore gauge, measure cylinder inner diameters at 6 posi-
tions; top, middle, and bottom (A, B, C) in 2 directions (X, Y).
Cylinder inner diameter (Standard):
96.000 - 96.030 mm (3.7795 - 3.7807 in) dia.
Wear limit: 0.2 mm (0.008 in)
Out-of-round limit (X - Y): 0.02 mm (0.0008 in)
Taper limit (A - C): 0.02 mm (0.0008 in)
FEM106
FEM107
FEM108
FEM109
CYLINDER BLOCKZD
Inspection (Cont'd)
EM-74

Assembly
1. Blow air sufficiently to inside coolant passage, oil passage,
crankcase, and cylinder bore to remove foreign matter.
2. Install main bearings and thrust bearings.
1) Remove contamination, dust and oil from bearing mounting
positions on cylinder block and main bearing caps.
2) Install thrust bearings on both sides of No. 4 housing on cylin-
der block.
IInstall thrust bearings with oil groove facing to crankshaft arm
(outside).
3) Being careful with the direction, install main bearings.
IInstall main bearings with the oil holes and grooves onto the
cylinder block side, and those without oil holes and grooves
onto the lower cylinder block side.
IWhile installing bearings, apply engine oil to bearing surfaces
(inside). Do not apply oil to rear surfaces, but clean them com-
pletely.
IAlign stopper notches on bearings to install them.
ICheck that the oil holes on the cylinder block body are mated
with the oil hole positions on the bearings.
3. Install crankshaft to cylinder block.
IWhile rotating crankshaft by hand, check for smooth rotation.
4. Install lower cylinder block.
IApply a continuous bead of liquid gasket to lower cylinder block
as shown in the figure.
IUsing slots on engine sub-attachment, install the lower cylinder
block to the cylinder block, avoiding interference of dowel pins.
5. Tighten lower cylinder mounting bolts to the torque shown
below in 3 consecutive steps in the order shown in the figure.
Unit: N×m (kg-m, ft-lb)
Main bolt (Nos. 1 - 10) Sub-bolt (Nos. 11 - 20)
1st 20 (2.0, 14) 98 (10, 72)
2nd 98 (10, 72) 20 (2.0, 14)
3rd 167 - 176 (17 - 18, 123 - 130) 40 - 46 (4.0 - 4.7, 29 - 33)
ISub-bolt No. 17 has shorter length than that of other sub-bolts.
FEM126
FEM127
FEM128
FEM092
CYLINDER BLOCKZD
EM-80