engine NISSAN PATROL 2000 Electronic Repair Manual

2. Using Tool, remove balancer shaft rear bearing from engine.
3. Install the rear and front balancer shaft bearings.
+Install from the cylinder block hole to the rear journal and
then the front journal.
+Install the groove of the balancer shaft bearing facing the
front and the under right direction.
(Align the guide plate and bar knock pin and then force in the
balancer shaft bearing.)
+Align the balancer shaft bearing groove with the knock pin of
the bar (SST) and install the balancer shaft bearing.)
+On rear journals, so the bearing does not get out of position,
wrap tape around the bar.
SEM381G
SEM382G
SEM383G
EMV0514D
TIMING GEARZD
Inspection (Cont'd)
EM-1045

4. Install the front oil seal to the gear case.
+Apply engine oil to the fitting side.
+Evenly insert the front oil seal using a drift [outer dia.: approx.
64 mm (2.52 in)] completely.
CAUTION:
Make sure the oil seal does not spill off the end side of the
gear case.
5. Install the gear case.
1) Before installing gear case, remove all traces of liquid gas-
ket from mating surface using a scraper.
2) Align gasket with dowel and install.
3) Install the O-rings to the gear case.
+The O-ring at the top position shown in the figure can be
installed in during cylinder head installation.
4) Apply a continuous bead of liquid gasket to gear case and oil
pan (upper).
+Use Genuine Liquid Gasket or equivalent.
a. Coat of liquid gasket should be maintained within the
specified range as shown in the figure.
b. Attach gear case to cylinder block within 5 minutes after
coating.
c. Wait at least 30 minutes before refilling engine oil or
starting engine.
FEM043
FEM044
SEM353G
FEM045
TIMING GEARZD
Installation (Cont'd)
EM-1048

CRANKSHAFT FRONT OIL SEAL
1. Remove the front cover. Refer to ªTIMING GEARº.
2. Remove front oil seal with a suitable tool.
3. Apply engine oil to new oil seal and install oil seal using a
suitable tool.
CRANKSHAFT REAR OIL SEAL
1. Remove oil pan assembly. Refer to EM-1022, ªOIL PANº.
2. Remove clutch cover assembly.
3. Remove flywheel and rear plate.
4. Remove oil seal retainer assembly.
5. Apply a continuous bead of liquid gasket to rear oil seal
retainer.
a. Coat of liquid gasket should be maintained within 2.0 to
3.0 mm (0.079 to 0.118 in) dia. range.
b. Attach oil seal retainer to cylinder block within five min-
utes after coating.
c. Wait at least 30 minutes before refilling engine oil or
starting engine.
d. Use Genuine Liquid Gasket or equivalent.
SEM358G
FEM044
SLC822
FEM053
OIL SEAL REPLACEMENTZD
EM-1052

5. Remove cylinder head assembly.
+Loosen and remove mounting bolts in the reverse order
shown in the figure.
+Lift up the cylinder head assembly to avoid interference with
dowel pins located between the block and head, and remove
cylinder head assembly.
CAUTION:
+Do not drop the O-ring located between the front of cyl-
inder head and the rear of gear case into the engine.
+Remove glow plug in advance to avoid damage as the tip
of the glow plug projects from the bottom of the cylin-
der head, or, place wood blocks beneath both ends of
the cylinder head to keep the cylinder bottom from any
contact.
+For glow plug removal, the following shall be noted.
CAUTION:
+To avoid breakage, do not remove glow plug unless nec-
essary.
+Perform continuity test with glow plug installed.
+Keep glow plug from any impact. (Replace if dropped
from a height 10 cm (3.94 in) or higher.)
+Do not use air impact wrench.
6. Remove idler gear.
CAUTION:
While removing idler gear, keep the rear of idler gear facing
up to prevent idler shaft from falling.
Inspection
CYLINDER HEAD BOLT DEFORMATION
(ELONGATION)
+Using micrometer, measure the outer diameters d1 and d2
of bolt thread as shown in the figure.
+If the necking point can be identified, set it as measuring
point d2.
+Calculate the difference between d1 and d2.
Limit: 0.15 mm (0.0059 in)
IDLER GEAR END PLAY
+Tighten mounting bolts to the specified torque.
+Using feeler gauge, measure the clearance between gear
plate and idler gear.
Standard: 0.07 - 0.14 mm (0.0028 - 0.0055 in)
Limit: 0.2 mm (0.0079 in)
+If the measured value exceeds the limit value, replace idler
gear, shaft, and gear plate.
FEM055
SEM379G
FEM056
CYLINDER HEADZD
Removal (Cont'd)
EM-1054

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.
+Check that the counter marks with cam gear, ªAAº and ªBBº,
are located on the front side of the engine.
Refer to EM- 1053.
CAUTION:
Since idler gear cannot be installed or removed with cylin-
der head assembly mounted on the engine because of inter-
ference 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:
+Make sure the O-ring does not fall off. Be careful not to
drop the O-ring.
+Do 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.
:40-49Nzm (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 Nzm (1.0 kg-m, 7 in-lb)
5. Tighten cylinder head bolts in the order indicated in the fig-
ure.
1) Apply engine oil to installation bolt threads and washers.
2) Tighten bolts to 98 to 102 Nzm (10.0 to 10.5 kg-m, 73 to 75
ft-lb).
3) Loosen bolts completely until the torque becomes 0 Nzm(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 Nzm (4.0 to 4.5 kg-m, 29 to 32 ft-
lb).
FEM061
FEM062
FEM055
CYLINDER HEADZD
Installation (Cont'd)
EM-1056

5)Tighten bolts at the angle of 90 to 95É (target is 95É). (Angle
tightening)
6) Once again, tighten bolts at the angle of 90 to 95É (target is
95É). (Angle tightening)
CAUTION:
Perform the following procedure to check turning angle of
angle tightening, and do not judge by visual check.
ANGLE TIGHTENING PROCEDURE
With protractor
+Make counter marks on the bolt head of cylinder head and
cylinder head surface with paint, and check the turning angle.
With angle wrench (SST)
+Check the turning angle using angle indicator of angle
wrench.
6. Loosen gear case mounting bolts which were tightened in 3)
of procedure 4, retighten them to the specified torque.
7. Install glow plug.
+2 different types (manufacturers) of glow plugs are provided
in parallel. (Refer to the figure for identification.)
+Do not install 2 different types of glow plugs in the engine.
Make sure that the same glow plugs are installed.
+Using reamer, remove the carbon adhering to the installation
hole of glow plug, and install glow plug.
FEM063
FEM064
CYLINDER HEADZD
Installation (Cont'd)
EM-1057

For details, Refer to EM-1088, 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-1061, ªVALVE SEAT
REPLACEMENTº.
2. Install valve seats, referring to EM-1061, ªVALVE SEAT
CONTACTº.
3. Using valve oil seal drift (SST), install valve oil seals refer-
ring to the dimension shown in the figure.
+The figure shows the dimension before valve spring seats
are installed.
4. Install valve spring seats.
5. Install valves.
+Install the valves with bigger openings to intake valve side.
+Note that valve layout here is different from that of conven-
tional the engine.
FEM076
FEM077
FEM078
FEM079
CYLINDER HEADZD
Inspection (Cont'd)
EM-1062

Precautions
+Do not perform operation unless it is perfectly safe.
+Do not start operation unless the exhaust system and cool-
ant are cooled down.
+Lift the engine at the designated support points only.
+Perform operations for the items other than the engine body,
referring to the applicable sections.
+Refer to MT section and AT section for rear mount.
Removal
+After removing transmission, hoist the engine and remove it.
Preparation
1. Drain coolant from radiator drain plugs.
2. Remove the following parts.
+Engine hood
+Undercover
+Under protector
+Battery
+Intercooler cover
+Intercooler
+Radiator shroud
+Radiator
+Accessory belt
+Cooling fan
+Exhaust front tube
Engine room (Left)
3. Remove air duct and air cleaner case.
4. Disconnect vacuum hose to the vehicle on the engine.
SEM362G
ENGINE REMOVALZD
EM-1064

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
harnesses 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 mount-
ing 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
transmission.
Removal operation
19. Remove air conditioner high pressure pipes at the rear of the
engine room.
+This is due to some inconvenience in the rear slinger instal-
lation.
20. Install the engine slingers (standard service part) to front-left
and rear-right.
:25-28Nzm (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-1065

21. Hook hoists to slingers to secure the position.
22. Remove installation nuts for left and right engine mount insu-
lators.
23. While adjusting position frequently, hoist and remove the
engine.
CAUTION:
+While performing operation, check that all necessary
wires and pipes are disconnected.
+Avoid interference with parts on the vehicle.
Installation
Install the engine in the reverse order of the removal procedure.
+Keep each mount insulator from oil adherence and damage.
+As for identification and installation direction of left and right
insulators, refer to stamping on the top surface. Refer to
EM-1064.
+As for a location with positioning pin, insert the pin correctly
to the hole of mating part.
+While keeping each mount insulator free from twisting,
tighten mounting bolts and nuts for the engine mount.
Inspection
+Before starting the engine, check coolant level and grease
amount, and if necessary, refill them to the specified level.
+Start the engine, and check that there is no abnormal noise
or vibration.
+Warm up the engine to the sufficient temperature, and check
that there is no leakage of coolant, greases, fuel, or exhaust
gas.
SEM363G
ENGINE REMOVALZD
Removal (Cont'd)
EM-1066