2000 NISSAN PATROL Electronic Repair Manual

Installation
1. Install the front plate.
1) Install the O-ring and gasket to the cylinder block.
+Apply liquid gasket uniformly and thinly to the front and
reverse sides of gasket.
Use Genuine Liquid Gasket or equivalent.
2) Install the front plate.
+Before installing, apply liquid gasket to the mating surfaces
of the cylinder block and the oil pan (upper).
Use Genuine Liquid Gasket or equivalent.
+Lightly tap with a hammer if the dowel pin cannot be inserted
easily.
CAUTION:
Make sure that the O-ring does not pop out.
2. Install the fuel injection pump.
+After installing the front plate, align the 6 mm (0.24 in) dia.
hole of the pump flange and the 6 mm (0.24 in) dia. hole
position of the pump body.
3. Install each timing gear.
+Align the match marks of the timing gears by referring to the
figure below.
+When installing timing gear, follow the order (
V1,V2) shown
in the dotted box in the figure below to facilitate installation.
FEM042
SEM387G
SEM206H
SEM207H
TIMING GEARZD
EM-1047

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

CAUTION:
Apply the liquid gasket around the bolt holes shown by the
arrows in the figure.
5) Install the gear case.
+Insert the gear case diagonally to prevent it from dragging
over the liquid gasket applied on the timing gear case and the
oil pan (upper).
+Align the dowel pin at the lower position of cylinder block with
the hole on the gear case side.
+Tap the area around the dowel pin with a plastic hammer if
it cannot be inserted easily.
CAUTION:
Do not pop out the O-rings.
6) Install the holding bolt referring to the figure.
Dimension below neck:
A: 25 mm (0.98 in)
B: 30 mm (1.18 in)
C: 50 mm (1.97 in)
D: 80 mm (3.15 in)
E: 20 mm (0.79 in)
7) Install the holding bolts from the rear side of the front plate.
6. Install the crankshaft pulley.
+Insert by aligning the 2 sides of the oil pump with the 2 sides
of the shaft on the rear side of the crankshaft pulley.
CAUTION:
Do not damage the oil seal lip when inserting.
+Refer to EM-1041, ªRemovalº for the crankshaft setting pro-
cedures when tightening the holding nut.
7. Install the water pump.
+Install it before installing the TDC sensor. Refer to ªWater
Pumpº in LC section.
8. Install the TDC sensor.
+Align the bracket knock pin with the hole on the gear case
side and tighten the holding bolt.
+Confirm that the clearance between the end of the sensor
and the signal detection protrusion of the crankshaft pulley is
within the specification.
Standard: 1 0.8 mm (0.039 0.031 in)
+Arrange the TDC sensor harness to the position shown in the
figure.
CAUTION:
Confirm that the harness has no deflection around the
crankshaft pulley when installing the clamp.
SEM208H
SEM209H
FEM046
SEM349G
TIMING GEARZD
Installation (Cont'd)
EM-1049

9. Install the timing chain, other parts in connection with the
timing chain, and the chain cover. Refer to EM-1027, ªTIM-
ING CHAINº.
10. Remove the internal mechanism setting bolt of the idler gear
(A).
11. Apply liquid gasket to the plug thread.
12. Install in the reverse order of removal.
FEM047
TIMING GEARZD
Installation (Cont'd)
EM-1050

VALVE OIL SEAL
1. Remove timing chain. Refer to EM-1027, ªTIMING CHAINº.
2. Remove injection nozzle assembly. Refer to ªInjection Tube
and Injection Nozzleº in ªBASIC SERVICE PROCEDUREº in
EC section.
3. Remove camshaft. Refer to EM-1031, ªCAMSHAFTº.
4. Remove valve lifters and mark order No. on each lifter.
5. Replace valve oil seal according to the following procedure.
When replacing valve oil seal, set the corresponding piston
at TDC. Failure to do so causes the valve to drop into the
cylinder.
1) Set No. 1 cylinder at TDC.
2) Remove valve springs and valve oil seals for No. 1 and No.
4 cylinders. Valve spring seats should not be removed.
3) Install new valve oil seals for No. 1 and No. 4 cylinders as
illustrated. Reinstall valve springs. (pink paint side toward
cylinder head)
4) Install valve spring retainers on intake valves and valve rota-
tors on exhaust valves, and remount valve assembly.
5) Set No. 2 cylinder at TDC.
6) Replace valve oil seals for No. 2 and No. 3 cylinders accord-
ing to steps 2) and 3).
7) Install valve lifters in original positions.
CRANKSHAFT OIL SEAL INSTALLING DIRECTION
AND MANNER
+When installing crankshaft oil seals, be careful to install
them correctly, as shown in the figure.
+Wipe off excess oil after installing oil seal.
SEM354G
SEM355G
SEM356G
SEM357G
SEM715A
OIL SEAL REPLACEMENTZD
EM-1051

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

Removal and Installation
Removal
1. Remove the following. (Refer to corresponding chapter for
detailed auxiliary work.)
+Drain coolant
+Rocker cover
+Injection tube
+Spill tube
+High pressure injection nozzle assembly
+Timing chain
+Camshaft
+Catalytic converter
+Turbocharger assembly
+Exhaust manifold
2. Remove mounting bolts of the gear case and water pump as
shown by arrows in the figure.
3. Remove oil return pipe from the rear side of cylinder head.
4. Remove intake manifold.
SEM359G
FEM054
CYLINDER HEADZD
EM-1053

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