NISSAN PATROL 2000 Electronic Repair Manual

IDLER GEAR END PLAY
+Tighten the holding bolts to the specification.
+Measure the clearance between the gear plate and idler gear
using a feeler gauge.
Unit: mm (in)
Standard Limit
Idler gear (A)
0.06 - 0.12
(0.0024 - 0.0047)0.15 (0.0059)
Idler gear (B)
+If it exceeds the limit, replace the idler gear, shaft, and gear
plate.
IDLER GEAR OIL CLEARANCE
+Measure the inner diameter (d1) of the idler gear shaft.
Standard:
Idler gear (A)
43.000 - 43.020 mm (1.6929 - 1.6937 in) dia.
Idler gear (B)
28.600 - 28.620 mm (1.1260 - 1.1268 in) dia.
+Measure the outer diameter (d2) of the idler shaft.
Standard:
Idler gear (A)
42.959 - 42.975 mm (1.6913 - 1.6919 in) dia.
Idler gear (B)
28.567 - 28.580 mm (1.1247 - 1.1252 in) dia.
+Calculate the oil clearance.
Clearance = d1 þ d2
Unit: mm (in)
Standard Limit
Idler gear (A)0.025 - 0.061
(0.0010 - 0.0024)
0.2 (0.0079)
Idler gear (B)0.020 - 0.053
(0.0008 - 0.0021)
+If it exceeds the limit, refer to each standard specification and
replace the idler gear and/or shaft.
BALANCER SHAFT END PLAY
+Measure the clearance between the plate and gear using a
feeler gauge.
Standard: 0.07 - 0.22 mm (0.0028 - 0.0087 in)
+If it exceeds the specification, replace the balancer shaft
assembly.
+As the gears are press-fitted, there are no setting for indi-
vidual parts.
FEM037
FEM038
TIMING GEARZD
Inspection (Cont'd)
EM-1043

BALANCER SHAFT OIL CLEARANCE
Outer diameter of balancer shaft journal
Measure the outer diameter of the balancer shaft journal with a
micrometer.
Standard:
Front side
50.875 - 50.895 mm (2.0029 - 2.0037 in) dia.
Rear side
50.675 - 50.695 mm (1.9951 - 1.9959 in) dia.
Inner diameter of balancer shaft bearing
Measure the inner diameter of the balancer shaft bearing using
a bore gauge.
Standard:
Front side
50.940 - 51.010 mm (2.0055 - 2.0083 in) dia.
Rear side
50.740 - 50.810 mm (1.9976 - 2.0004 in) dia.
Oil clearance calculations
Oil clearance = Bearing inner diameter þ Journal outer diameter
Standard: 0.045 - 0.135 mm (0.0018 - 0.0053 in)
Limit: 0.180 mm (0.0071 in)
BALANCER SHAFT BEARING REMOVAL AND
INSTALLATION
1. Remove balancer shaft front bearing.
FEM039
FEM040
SEM993BA
SEM380G
TIMING GEARZD
Inspection (Cont'd)
EM-1044

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

+Make an alignment mark 11.0 0.8 mm (0.433 0.031 in) from
the bar No. 2 engraved line with a marker pen. This align-
ment mark
VBwill be the point to where the rear bearing is
pushed.
+Insert the bar with the bearing installed into the cylinder block
and install the guide plate (SST).
+Align the guide plate with the ZD engraving and install the
bolts.
CAUTION:
Use a washer of the same thickness used on the front plate
to prevent the guide plate from bending.
+Push the engraved bar alignment mark
VBto the same posi-
tion of the guide plate tip
VA.
+After all the journals have been installed, make sure that all
the journal and cylinder block oil holes are aligned.
4. Install the front balancer shaft bearing.
+Align the journal and cylinder block oil holes.
+Use a drift (SST) to force in the tip of the journal to 8.0 0.3
mm (0.315 0.012 in) inside the cylinder block.
+After installing the journal, make sure that the journal and
cylinder block oil holes are aligned.
SEM385G
SEM384G
SEM386G
SEM380G
TIMING GEARZD
Inspection (Cont'd)
EM-1046

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