NISSAN PATROL 2000 Electronic Repair Manual

INSTALLATION [OIL PAN (LOWER)]
1. Install oil pan (Lower).
a. Use a scraper to remove all traces of liquid gasket from
mating surfaces.
+Also remove traces of liquid gasket from mating surface of oil
pan (Upper).
+Remove old liquid gasket from the bolt hole and thread.
b. Apply a continuous bead of liquid gasket to mating surface
of oil pan (Lower).
+Use Genuine Liquid Gasket or equivalent.
+Apply liquid gasket to the groove on the mating surface.
+Allow 7 mm (0.28 in) clearance around bolt holes.
c. Apply liquid gasket to inner sealing surface as shown in fig-
ure.
+Be sure liquid gasket is 3.5 to 4.5 mm (0.138 to 0.177 in).
+Attaching should be done within 5 minutes after coating.
2. Tighten the installation bolts in the order shown in the figure.
3. Install in the reverse order of removal.
REMOVAL [OIL PAN (UPPER) AND OIL STRAINER]
1. Remove the following parts.
+Engine cover
+Under covers
+Stabilizer; Refer to FA section in original Service Manual.
+Exhaust front tube and its bracket; Refer to FE section in
original Service Manual.
+Front propeller shaft and rear propeller shaft; Refer to PD
section in original Service Manual.
+Starter motor; Refer to EL section in original Service Manual.
+A/T or M/T assembly with transfer; Refer to AT section or MT
section in original Service Manual.
NOTE:
As there is a converter/clutch housing side oil pan (upper)
installation bolt as well, the transmission will also need to
be removed.
2. Loosen the installation bolts in the reverse order of that
shown in the figure and then remove.
3.
Using a seal cutter (SST), cut the liquid gasket to separate it.
4. Remove oil strainer
INSTALLATION [OIL PAN (UPPER) AND OIL STRAINER]
1. Clean oil strainer if any object is attached, and install oil
strainer.
2. Install oil pan (Upper).
a. Use a scraper to remove all traces of liquid gasket from
mating surfaces.
+Also remove traces of liquid gasket from mating surface of
cylinder block, front cover and oil pan (Lower).
+Remove old liquid gasket from the bolt hole and thread.
b. Apply a continuous bead of liquid gasket to mating surface
of oil pan (Upper).
SEM159F
SEM345GA
SEM346G
SEM159F
SEM347GA
OIL PAN & OIL STRAINERZD
Removal and Installation (Cont'd)
EM-1023

+Use Genuine Liquid Gasket or equivalent.
+Apply liquid gasket to the groove on the mating surface.
+Allow 7 mm (0.28 in) clearance around bolt holes.
c. Apply liquid gasket to inner sealing surface as shown in fig-
ure.
+Be sure liquid gasket is 3.5 to 4.5 mm (0.138 to 0.177 in).
+Attaching should be done within 5 minutes after coating.
3. Tighten the installation bolts in the order shown in the figure.
Then tighten in the same order to the torque stated.
4. The torque of the installation bolts will differ depending on
position.
Measurement below the neck of the installation bolt:
40 mm (1.57 in) (Bolt No. 15, 17 in the figure)
50 mm (1.97 in) (Bolt No. 21 in the figure)
20 mm (Others)
5. Install in the reverse order of removal.
OIL PAN & OIL STRAINERZD
Removal and Installation (Cont'd)
EM-1024

Removal and Installation
REMOVAL
1. Remove the following parts.
+Radiator under side
+Radiator shroud
+Cooling fan
+Chain cover front side
+A/T cooler hose (Disconnect)
+Vacuum hose
+Intercooler cover (When removing vacuum tank)
2. Remove the installation bolts and pull the vacuum pump from
the engine front directly.
3. If it is difficult to remove from the spline shaft connection, tap
lightly with a plastic hammer.
SEM320G
SEM321G
VACUUM PUMPZD
EM-1025

INSPECTION
1. Remove the vacuum hose. Connect the vacuum gauge
through the 3-way connector. Otherwise, remove the welch
valve of the vacuum pipe and attach the vacuum gauge
directly. (The illustration shows the second method.)
+Remove an appropriate part to measure the vacuum pump
load pressure directly and install the vacuum gauge. Refer to
the figure.
2. Start the engine, and measure the load pressure with the
engine idling.
Vacuum pressure:
Standard
þ93.3 to þ101.3 kPa (þ933 to þ1,013 mbar, þ700 to
þ760 mmHg, þ27.56 to þ29.92 inHg)
3. If outside the standard value, make sure that there is no
intake of air within the circuit and measure again.
4. Replace the vacuum pump if still outside the standard value.
INSTALLATION
+Install in the reverse order of removal.
SEM322G
VACUUM PUMPZD
Removal and Installation (Cont'd)
EM-1026

Removal and Installation
CAUTION:
As the internal mechanism of the idler gear must first of all,
and always, be set by a bolt when removing the timing chain
before removing the fuel injection pump and timing gear,
follow the procedures on EM-1039, ªRemoval of timing
chain after setting idler gearº, ªElectronic controlled fuel
injection pumpº.
+This chapter will deal with the summary of removing the tim-
ing chain before removing the camshaft and cylinder head.
Removal
1. Remove the following parts.
+Engine cover
+Intercooler
+Air inlet pipe
+Throttle body
+Rocker cover
+Spill tube
+Coolant (Drain)
+Radiator upper hose
+Water outlet
+Radiator shroud
+Cooling fan
+Auxilary belt
FEM003
TIMING CHAINZD
EM-1027

+Vacuum pipe
+Vacuum pump
2. Move the following parts.
+TDC sensor harness
+Power steering oil pump
3. Remove the chain cover.
+Remove the holding bolts A to C shown in the figure.
CAUTION:
While the chain cover is removed, be careful not to allow
entry of dust or foreign objects.
4. Set the No. 1 cylinder to the TDC.
1) Turn the crankshaft pulley clockwise, and match the timing
indicator of the gear case to the timing mark of the crankshaft
pulley.
2) Make sure that the cam sprocket match mark is in the posi-
tion shown in the figure.
+If the match mark is not in position, turn the crankshaft pul-
ley once more and position it.
+When removing at No. 1 cylinder TDC, each sprocket and
chain is fitted using the match mark, therefore there is no
need to apply any match marks beforehand.
5. Remove the chain tensioner.
1) Loosen upper and lower holding bolts.
2) Holding the chain tensioner in your hand, remove the upper
holding bolt and release the spring tension.
3) Remove the lower holding bolt, then remove the chain ten-
sioner.
+The chain tensioner does not have a mechanism which pre-
vents the ejection of the plunger. (It does have a mechanism
which prevents the plunger from returning.)
CAUTION:
Be careful not to drop the plunger and spring.
FEM004
SEM342G
FEM005
FEM006
TIMING CHAINZD
Removal (Cont'd)
EM-1028

6. Remove the timing chain slack guide.
7. Remove the timing chain with cam sprocket.
+Loosen the cam sprocket holding bolt by fixing the hexago-
nal portion of the intake manifold side camshaft with a
spanner, etc.
+If the spill tube is not removed, fix the hexagonal portion of
the exhaust manifold side camshaft.
CAUTION:
Do not loosen the holding bolt by using the tension of the
chain.
8. Remove the timing chain tension guide.
Installation
1. Install the timing chain tension guide.
2. Install the cam sprocket and the timing chain together.
+Install by aligning the sprocket and timing chain match
marks.
+Tighten the cam sprocket holding bolt by fixing the hexago-
nal portion of the camshaft.
CAUTION:
Do not tighten in the holding bolt using the tension of the
chain.
3. Install the timing chain slack guide.
CAUTION:
When the holding bolt is tightened to the specified torque,
there is a gap between the guide and bolt. Do not over-
tighten.
4. Install the chain tensioner.
1) With the chain tensioner in the position shown in the figure
(with the plunger on the outer side), temporarily tighten the
holding bolt.
2) Press the plunger into the tensioner body while pressing on
the clips which prevent the plunger from returning.
3) Install the upper side holding bolt while holding the plunger
down with your finger and rotating it 180 degrees.
4) Tighten the holding bolt to the specified torque.
5. Install the chain cover.
1) Before installing chain cover, remove all traces of liquid gas-
ket from mating surface using a scraper.
2) Apply a continuous bead of liquid gasket to chain cover.
+Use Genuine Liquid Gasket or equivalent.
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 chain cover to gear case within 5 minutes after
coating.
c. Wait at least 30 minutes before refilling engine oil or
starting engine.
SEM335G
FEM007
FEM008
FEM009
TIMING CHAINZD
Removal (Cont'd)
EM-1029

3) Install the chain cover.
+The dimension below the neck of the holding bolt will vary
depending on the part.
Dimension below the neck:
A: 20 mm (0.79 in)
B: 50 mm (1.97 in)
C: 60 mm (2.36 in)
6. Install by following all removal procedures in reverse.
CAUTION:
+Arrange the TDC sensor harness in the position shown
in the figure.
+Make sure that the harness has no deflection around the
vicinity of the crankshaft pulley when installing the
clamp.
FEM004
SEM349G
TIMING CHAINZD
Installation (Cont'd)
EM-1030

Removal and Installation
+This engine will have a different valve arrangement from
normal DOHC 4-valve type engines. As both camshafts on
this engine have intake and exhaust cams, in this chapter
they are named as follows:
Camshaft (Right side): Intake manifold side camshaft
Camshaft (Left side): Exhaust manifold side camshaft
+The same parts are used for the right and left sides.
+Refer to the figure for intake and exhaust valve arrangement.
(The camshafts have, alternately, either an intake valve or an
exhaust valve.)
Removal
1. Set the No. 1 cylinder at TDC, then remove the chain case,
timing chain and other parts in connection. Refer to ªTIMING
CHAINº, EM-1027.
2. Remove the cam gear.
+Loosen the cam gear installation bolt by fixing the hexago-
nal portion of the camshaft.
+The idler gear cannot be removed at this point as the gear
case is in the way. (The cylinder head can be removed as a
single unit.)
SEM350G
FEM010
FEM011
CAMSHAFTZD
EM-1031

3. Remove injection tube and injection nozzle assembly. Refer
to EC section, ªInjection Tube and Injection Nozzleº in
ªBASIC SERVICE PROCEDUREº.
4. Remove the camshaft.
+Place distinguishing marks on the right and left sides with
paint.
+Loosen and remove the installation bolt in reverse order
shown in the figure.
5. Remove the adjusting shim and valve lifter.
+Remove by taking notice of the installation position, and
place outside engine in order to prevent confusion.
Inspection
VISUAL CHECK OF CAMSHAFT
+Check the camshaft for one sided wear or scratches.
+Replace the camshaft if there are abnormalities.
CAMSHAFT RUNOUT
+Prepare V-block on a flat surface and secure camshaft jour-
nals No. 1 and No. 5.
+Set the dial gauge vertically on journal No. 3.
+Rotate camshaft in one direction by hand, then read needle
movement on dial indicator.
Camshaft bend value is 1/2 of needle movement.
Limit: 0.02 mm (0.0008 in)
HEIGHT OF CAM NOSE
Measure by using a micrometer.
Standard:
Intake
40.488 0.02 mm (1.5940 0.0008 in)
Exhaust
40.850 0.02 mm (1.6083 0.0008 in)
CAMSHAFT OIL CLEARANCE
Measure by using a micrometer.
Cam journal outer diameter:
Standard
29.931 - 29.955 mm (1.1784 - 1.1793 in) dia.
FEM012
FEM013
FEM014
FEM015
CAMSHAFTZD
Removal (Cont'd)
EM-1032