1998 NISSAN PATROL Maintenance Workshop Manual

Checking Cooling System
CHECKING HOSES AND CLAMPS
Check hoses and clamps for proper attachment, leaks, cracks,
damage, loose connections, cha®ng and deterioration.
CHECKING RADIATOR CAP
Apply pressure to radiator cap with cap tester to see if it is satis-
factory.
Radiator cap relief pressure:
78-98kPa
(0.78 - 0.98 bar, 0.8 - 1.0 kg/cm
2, 11 - 14 psi)
Pull the negative-pressure valve to open it. Check that it closes
completely when released.
CHECKING COOLING SYSTEM FOR LEAKS
Apply pressure to the cooling system with cap tester to check for
leakage.
Testing pressure:
98 kPa (0.98 bar, 1.0 kg/cm
2, 14 psi)
CAUTION:
Use of higher pressure than the speci®ed value may cause
damage to radiator.
Checking and Replacing Fuel Filter and
Draining Water
Be careful not to spill fuel in engine compartment. Place a rag
to absorb fuel.
CHECKING FUEL FILTER
Check fuel ®lter for fuel leakage, damage and other abnormal
signs.
REPLACING FUEL FILTER
1. Disconnect harness connector and drain fuel.
SLC613
SMA871B
SMA007D
SMA757B
ENGINE MAINTENANCE
MA-16

2. Remove fuel ®lter using band-type ®lter wrench.
Remove fuel ®lter and fuel ®lter sensor.
CAUTION:
Remove fuel ®lter without spilling fuel. If spilt, wipe off imme-
diately. Be specially careful not to spill fuel on engine mount
insulator.
3. Wipe clean fuel ®lter mounting surface on fuel ®lter bracket and
smear a little fuel on rubber seal of fuel ®lter.
4. Screw fuel ®lter on until a slight resistance is felt, then tighten
an additional more than 2/3 of a turn.
5. Install fuel ®lter sensor to new fuel ®lter.
6. Bleed air from fuel line.
Refer to Bleeding Fuel System in EC section.
7. Start engine and check for leaks.
DRAINING WATER
1. Drain water as follows.
Loosen drain cock and drain water.
Loosening drain cock 4 to 5 turns causes water to start drain-
ing. Do not remove drain cock by loosening it excessively.
If water does not drain properly, move the priming pump up and
down.
2. Bleed air.
Checking Fuel Lines
Check fuel lines and tank for proper attachment, leaks, cracks,
damage, loose connections, cha®ng and deterioration.
CAUTION:
Keep clean parts with compressed air when assembling.
SMA005D
SMA010
SMA825B
SMA803A
ENGINE MAINTENANCE
Checking and Replacing Fuel Filter and
Draining Water (Cont'd)
MA-17

Cleaning and Replacing Air Cleaner Filter
VISCOUS PAPER TYPE
The viscous paper type air cleaner ®lter does not require any clean-
ing operation between renewal.
Checking Injection Nozzle
WARNING:
When using nozzle tester, be careful not to allow diesel fuel
sprayed from nozzle to come into contact with your hand or
body, and make sure that your eyes are properly protected.
1. Install nozzle to injection nozzle tester and bleed air from ¯are
nut.
2. Check initial injection pressure by pumping tester handle one
full stroke per second.
Initial injection pressure:
Used nozzle
More than 14,220 kPa
(142.2 bar, 145 kg/cm
2, 2,062 psi)
New nozzle
14,711 - 15,495 kPa
(147.1 - 155.0 bar, 150 - 158 kg/cm
2,
2,133 - 2,247 psi)
+Always check initial injection pressure before installing
new nozzle.
3. Check spray pattern by pumping tester handle one full stroke
per second.
a. If main spray angle is within 30 degrees as shown, injec-
tion nozzle is good.
b. It is still normal even if a thin stream of spray deviates from
main spray (pattern B).
4. If initial injection pressure or injection nozzle is not normal,
adjust or clean injection nozzle.
5. Test again. If it is not corrected, replace nozzle.
Refer to EC section for injection pressure adjustment, clean-
ing and replacement.
SMA006D
EF791A
SEF672A
SEF079S
ENGINE MAINTENANCE
MA-18

6. Install all injection nozzles with Tool and securely connect fuel
spill tube and delivery tubes.
7. Bleed air from fuel system and check for fuel leakage with
engine running.
Injection nozzle to cylinder head:
:59-69Nzm (6.0 - 7.0 kg-m, 43 - 51 ft-lb)
Spill tube nut:
:39-49Nzm (4.0 - 5.0 kg-m, 29 - 36 ft-lb)
Injection tube:
:20-25Nzm (2.2 - 2.5 kg-m, 16 - 18 ft-lb)
Checking Idle Speed
Inspection should be carried out with gears in ``Neutral'' and
with air conditioner and other electrical loads off.
1. Warm up engine until engine coolant temperature indicator
points to the middle of gauge.
2. Attach a diesel tachotester's pick-up to No. 1 fuel injection tube.
3. Race engine two or three times and check idle speed.
Idle speed:
Unit: rpm
MT 750+50
þ0
Timing Belt Replacement
Refer to EM section.
ENGINE MAINTENANCE
Checking Injection Nozzle (Cont'd)
MA-19

Checking Exhaust System
Check exhaust pipes, muffler and mounting for improper
attachment, leaks, cracks, damage, loose connections, cha®ng and
deterioration.
Checking Clutch Fluid Level and Leaks
If ¯uid level is extremely low, check clutch system for leaks.
Checking Clutch System
Check ¯uid lines and operating cylinder for improper attachment,
cracks, damage, loose connections, cha®ng and deterioration.
Checking M/T Oil Level and Leaks
Never start engine while checking oil level.
1. Check manual transmission for leakage.
2. Check oil level.
Filler plug:
:25-34Nzm (2.5 - 3.5 kg-m, 18 - 25 ft-lb)
Changing M/T Oil
Oil grade:
API GL-4. Refer to ``RECOMMENDED FLUIDS AND
LUBRICANTS'', MA-9.
Oil capacity:
FS5R50B 3.8 liters (6-3/4 Imp pt)
Re®ll 2.9 liters (5-1/8 Imp pt)
FS5R30A 5.1 liters (9 Imp pt)
Drain plug:
:25-34Nzm (2.5 - 3.5 kg-m, 18 - 25 ft-lb)
SMA211A
SMA991C
SMA992C
SMA103
SMA255A
CHASSIS AND BODY MAINTENANCE
MA-20

Checking Water Entry
Check water entry in the clutch housing by removing the seal-
ing grommet, whenever driving in deep water or mud.
Checking Transfer Fluid Level
Never start engine while checking ¯uid level.
1. Check transfer for leakage.
2. Check ¯uid level.
Filler plug:
:25-34Nzm (2.5 - 3.5 kg-m, 18 - 25 ft-lb)
Changing Transfer Fluid
Fluid grade:
Genuine Nissan ATF or equivalent or API GL-4.
Refer to ``RECOMMENDED FLUIDS AND
LUBRICANTS'', MA-9.
Fluid capacity:
1.9 liters (1-5/8 Imp qt)
Drain plug:
:25-34Nzm (2.5 - 3.5 kg-m, 18 - 25 ft-lb)
Checking Propeller Shaft
Check propeller shaft for damage, looseness or grease leakage.
Tightening torque: Refer to PD section.
Greasing Nipples of Propeller Shafts
Apply multi-purpose grease to nipples of propeller shafts.
SMA369B
SMA936B
SMA993C
SMA945B
SMA043C
Front
Grease nipples
CHASSIS AND BODY MAINTENANCE
MA-21

Checking Differential Gear Oil
1. Check differential carrier for oil leakage.
2. Check oil level.Filler plug:
:59-98N zm (6 - 10 kg-m, 43 - 72 ft-lb)
Changing Differential Gear Oil
Oil capacity:
Front5.4 liters (9-1/2 Imp pt)
Rear H233B (Without diff. lock) 2.4 liters(4-1/4 Imppt)
H233B (With diff. lock) 3.0 liters (5-1/4 Imp pt)
H260 (Without diff. lock) 4.7 liters (8-1/4 Imp pt)
H260 (With diff. lock) 3.7 liters (6-1/2 Imp pt)
Drain plug:
:59-98N zm (6 - 10 kg-m, 43 - 72 ft-lb)
Limited-slip differential gear
+ Use only approved or recommended limited-slip differential
gear oil.
+ Limited-slip differential identi®cation.
(1) Lift both rear wheels off the ground.
(2) Turn one rear wheel by hand.
(3) If both rear wheels turn in the same direction simultaneously, vehicle is equipped with limited-slip differential.
Checking Front Wheel Bearing Grease
+Check that wheel bearings operate smoothly.
+ Check front wheel bearings for grease leakage and water or
dust entry.
+ Replace front wheel bearings or front wheel bearing grease if
wheel bearings do not turn smoothly.
SMA944B
Grease nipples
Rear
SMA108-A
Filler plug
Fill to this
level
SMA109-A
Drain plug
CHASSIS AND BODY MAINTENANCE
MA-22

Repacking Front Wheel Bearing and Axle Joint
Grease
FRONT WHEEL BEARING GREASE
Apply multi-purpose grease sparingly to the following parts:
+Threaded portion of spindle
+Contact surface between wheel bearing washer and outer
wheel bearing
+Grease seal lip
+Wheel hub (as shown at the left)
AXLE JOINT GREASE
+Drain approximately 2 liters (1-3/4 Imp qt) of differential oil.
+Remove knuckle spindle.
+Slightly pull out axle and repack axle joint with recommended
grease.
Refer to FA section.
Checking Free-running Hub Grease
Check free-running hub grease for leakage and water or dust entry.
Checking Water Entry in Knuckle Flange
+Check for water entry in knuckle ¯ange by removing one bolt
of lower knuckle ¯ange bearing cap and probing with a suitable
thin bar.
+After checking, be sure to reinstall the bolt to a tightening torque
of 30 to 40 Nzm (3.1 to 4.1 kg-m, 22 to 30 ft-lb).
Checking Brake Fluid Level and Leaks
If ¯uid level is extremely low, check brake system for leaks.
SFA469A
SFA869B
SMA946B
SMA949B
SBR451D
CHASSIS AND BODY MAINTENANCE
MA-23