Remove engine ISUZU TROOPER 1998 Service Repair Manual

6C – 10 ENGINE FUEL
REMOVAL
Prior to removal, be sure to confirm and record the
group code of the injector installed using Tech2.
1. Disconnect battery ground cable.
2. Remove air cleaner cover and air duct.
3. Remove intercooler.
Refer to “Intercooler” in this manual.
4. Remove PCV hose and pipe.
5. Remove cylinder head noise insulator cover.
6. Remove high pressure oil pipe.
CAUTION:
1) Sleeve nut should be loosened with cloth tied
around to prevent oil from spurting due to the
remaining pressure.
2) High oil pressure pipe should be disconnected
with cloth tied around the intake manifold glow
plug to prevent oil from flowing out of the oil
rail.
7. Loosen eye bolt of fuel pipe at fuel pump side.
NOTE: Cloth should be put around the loosened eye
bolt to prevent fuel from flowing out.
8. Remove fuel return hose at chassis side.
9. Remove PCV hose to cylinder head cover.
10. Remove cylinder head cover.
11. Drain the oil from oil rail assembly.
NOTE: Do not drop O-ring
12. Record the grade code of injector for each cylinder
that is indicated on the upper portion of injector.
There are nine kinds of grade code available, one
alphabet letter and one numeral letter.
Grade codeLegend
(1) Part Number
(2) Category Number (Grade code)
(3) Serial Number
(4) Bar Code
13. Remove harness connector from each injector.
14. Loosen nuts and bolts for oil rail.
15. Remove injector fixing bolts.
16. Remove injector clamp.
17. Remove injector assembly.
INSTALLATION
1. Install oil rail, tighten temporarily
2. Install injector assembly.
NOTE:
1) Do not forget to install O-ring between injector and
oil rail.
2) Use new O-ring
3) Clean O-ring groove and fitting surface of parts.
4) Apply engine oil to O-ring.
3. Install injector fixing bolts, tighten temporarily.
4. Install injector clamp, tighten nut temporarily.
5. Tighten injector fixing bolts to the specified torque.
Torque: 6.5 N·m (0.7 kg·m / 5.1 lb ft)
6. Tighten injector clamp nut to the specified torque
with special method.
Torque: 30 N·m (3.1 kg·m / 22.4 lb ft) then loosen a
time again tighten as following torque.
Torque: 25 N·m (2.4 kg·m / 17.4 lb ft)
7. Tighten oil rail to the specified torque.
Torque: 20 N·m (2.0 kg·m / 14.5 lb ft)
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4
32
055RW00001
Category number
A– 1
A– 2
A– 3
B – 1
B – 2
B – 3
C – 1
C – 2
C – 3

ENGINE FUEL 6C – 13
FUEL PUMP PIPE
6
23
10
98 5
4
7
1
Legend
(1) Cap Nut
(2) Gasket
(3) Gasket
(4) Pipe Nut
(5) Adapter(6) Gasket
(7) Fuel Pump Pipe
(8) Eye Bolt
(9) Gasket
(10) Gasket
040R200002
REMOVAL
1. Remove eye bolt.
2. Remove cap nut.
NOTE: The eye bolt and cap nut should be
disconnected with cloth tied around them to prevent
flowing out of fuel.
3. Remove fuel pump pipe.
4. Remove pipe nut.
5. Remove adapter.
INSTALLATION
1. Apply engine oil to the thread, then install adapter
with new gasket.
Torque : 16 N·m (1.6 kg·m/12 lb ft)
NOTE: Be careful not to enter the foreign material.
2. Apply engine oil to the thread, then install pipe nut.
Torque : 10 N·m (1.0 kg·m/87 lb ft)
NOTE: Do not apply oil to cap nut side.
3. Install fuel pump pipe, new gaskets and cap nut to
adapter temporarily. Do not tighten the cap nut.
4. Install eye bolt with new gasket then tighten to
specified torque.
Torque : 29 N·m (3.0 kg·m/22 lb ft)

ENGINE FUEL 6C – 15
HIGH PRESSURE OIL PUMP
REMOVAL
1. Disconnect battery ground cable.
2. Remove air cleaner cover and air duct
3. Intercooler assembly
Refer to “Intercooler” in this manual.
4. Remove high pressure oil pipe
5. Timing belt cover
Disconnect CMP sensor cable.
Remove CMP sensor bracket.
6. Tensioner
7. Timing Belt
8. Remove high pressure oil pump timing pulley
9. Remove crankshaft damper pulley
10. Remove timing gear case cover
11. Remove idle gear A
Before removing idle gear A, set two bolts to the
sub gear of idle gear A and turn it to align the teeth
of idle gear A main gear.
Then lock them by bolts as shown in the illustration.Legend
(1) Idle gear A sub gear
(2) Idle gear A main gear
(3) Bar
(4) Lock bolt
1
2
43
Legend
(1) O-Ring
(2) High Pressure Oil Pump Assembly
(3) Nut
(4) O-Ring
040RW007
4 1
2
3
014RW177

6C – 16 ENGINE FUEL
12. Remove high pressure oil pump
13. Remove high pressure oil pump assembly
Legend
(1) O-ring
(2) High pressure oil pump
(3) Nut
(4) O-ring
1
2
43
040RW007

6C – 18 ENGINE FUEL
4. Remove lock bolt of idle gear A.
5. Install timing gear case cover.
Refer to “Timing gear” in this manual.
6. Install front plate.
Torque: 20 N·m (2.0 kg·m/14.5 lb ft)
7. Install timing pulley of high pressure oil pump.
Torque: 10 N·m (1.0 kg·m/7.2 lb ft)
8. Install timing belt and tighten timing belt tensioner
assembly.
Refer to “Cylinder head” in this manual.
Legend
(1) Align Mark
(2) Camshaft Pulley
(3) Timing Belt
(4) High Pressure Oil Pump Pulley
(5) Bolt
(6) Tensioner Assembly
(7) Tensioner Bolt
(8) Tensioner Spring
9. Install CMP sensor bracket.
Torque: 20 N·m (2.0 kg·m/14.5 lb ft)
10. Connect CMP sensor cable.
11. Install timing belt cover.
Torque: 9 N·m (0.9 kg·m/6.5 lb ft)
12. Fill with about 300 cc of engine oil from the high
pressure oil pipe installation port of the oil rail using
an oil filler.
If assembled without filling the oil rail with oil, the
time for engine starting will be longer.
13. Immediately install high pressure oil pipe and
tighten to specified torque.
NOTE:
1) Use new O-ring.
2) Clean O-ring groove and fitting surface of parts.
3) Apply engine oil to O-ring.
Torque: 80 N·m (8.1 kg·m/57.9 lb ft)14. Install the crankshaft damper pulley with specified
torque.
Torque: 220 N·m (22 kg·m/159 lb ft)
15. Install the intercooler assembly.
Refer to “Intercooler” in this manual.
16. Install air cleaner cover and air duct.
1
2
3
8
67
4 5
F06RW055

ENGINE FUEL 6C – 19
HIGH PRESSURE OIL PIPE INSTALLATION
1. Install upper bracket to two way valve, tighten them
temporarily.
2. Install pipe A to two way valve, tighten pipe A
temporarily with union nut D.
3. Install two way valve assembly to cylinder block,
tighgten with union nut C temporarily.
4. Install pipe B to two way valve, tighten union nut E
and union nut F temporarily.
5. Tighten upper bracket to specified torque.
Torque : 20 N·m (2.0 kg·m/14.5 lb ft)
6. Tighten union nut in the following order, union nut
C, D, F, and E to the specified torque.
Torque : 80 N·m (8.1 kg·m/57.9 lb ft)
7. Tighten lower bracket to the specified torque.
Torque : 20 N·m (2.0 kg·m/14.5 lb ft)
NOTE: Wash inside pipe, inside union nut and O-ring
seal surface to remove engine oil and foreign materials.
6
5
7
9
8
114
1
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3 10
Legend
(1) Union Nut F
(2) Pipe B
(3) Union Nut E
(4) Upper Bracket
(5) Two Way Valve
(6) Union Nut D(7) Pipe A
(8) Union Nut C
(9) Lower Bracket
(10) To Oil Rail
(11) To High Pressure Oil Pump
052R200001

6C – 20 ENGINE FUEL
FUEL TANK
REMOVAL
1. Disconnect battery ground cable.
2. Remove fuel filler cap.
3. Drain fuel.
After drain the fuel tighten the drain plug with
specified torque.
Torque : 20 N·m (2.0 kg·m/14 lb ft)
4. Remove fuel filler hose and let air pull off hose.
5. Remove breather hose.
6. Remove fuel feed hose and fuel return hose.
7. Disconnect harness connector from fuel gauge unit.
8. Remove under cover.
9. Remove fuel tank assembly.
INSTALLATION
1. Fuel tank assembly.
1) Place a flange on right side of tank on the
bracket.
2) Install a flange to left side of the bracket from the
bottom, and tighten bolts to the specified torque.
Torque : 36 N·m (3.7 kg·m/26.8 lb ft)
2. Install fuel hose and fuel return hose.
3. Install the breather hose.
4. Reconnect harness connector to fuel gauge unit.
5. Install under cover.
6. Install fuel filler hose and let air pull off hose.
7. Fill fuel tank with fuel and tighten filler cap.
8. Reconnect battery ground cable.
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8
678 Europe, Nicaragua, Argentina, Philippin
6
5
3
Legend
(1) Fuel Tank Assembly
(2) Gauge Unit
(3) Bolt(4) Under Cover
(5) Bolt
(6) Fuel Filler Hose
(7) Fuel Filler Cap
(8) Breather Hose
140R200032

ENGINE FUEL 6C – 21
FUEL GAUGE UNIT
1
2
3
140R200033
REMOVAL
1. Disconnect battery ground cable.
2. Loosen fuel filler cap.
3. Drain fuel.
After drain the fuel tighten the drain plug with
specified torque.
Torque : 20 N·m (2.0 kg·m/14 lb ft)
4. Disconnect harness connector from fuel gauge unit.
5. Fuel Gauge Unit
1) Remove the fixing screws, then the fuel gauge
unit.
INSTALLATION
1. Fuel Gauge Unit
2. Connect the harness connector to the fuel gage
unit.
3. Fill the tank with fuel and tighten fuel filler cap.
4. Connect battery ground cable.
FUEL FILLER CAP
The fuel filler cap contains a vacuum valve. If a
negative pressure develops in the fuel tank, the
external valve of the fuel filler cap opens to allow the
fresh air to flow into the fuel tank through the vacuum
valve.
INSPECTION
Check the seal ring in the filler cap for presence of any
abnormality and for seal condition.
Replace the filler cap, if abnormal.Legend
(1) Vacuum Valve
(2) Pressure Valve
(3) Seal Ring Legend
(1) Fuel Tank Assembly
(2) Fuel Gauge Unit
(3) Drain Plug
1
3
2
060R200247

6D – 2 ENGINE ELECTRICAL
b. VOLTAGE IS ABOVE 16V AT ABOVE 1/3 OF
AMPERAGE RATE – Drop charging voltage to
15V and charge for 10 – 15 hours.
Then go to Step 5.
c. VOLTAGE IS BETWEEN 12V AND 16V –
Continue charging at the same rate for an
additional 3-1/2 hours. Then go to Step 5.
d. VOLTAGE IS BELOW 12V – Replace battery.
5. LOAD TEST (Step 5)
(1) Connect a voltmeter and a battery load tester
across the battery terminals.
(2) Apply 300 ampere load for 15 seconds to remove
surface charge from the battery.
Remove load.
(3) Wait 15 seconds to let battery recover. Then apply
specified load from specifications (See Main Data
and Specifications in this section).
Read voltage after 15 seconds, then remove load.
a. VOLTAGE DOES NOT DROP BELOW THE
MINIMUM LISTED IN FOLLOWING TABLE –
The battery is good and should be returned to
service.
b. VOLTAGE IS LESS THAN MINIMUM LISTED –
Replace battery.
ESTIMATED
TEMPERATUREMINIMUM
°F °CVOLTAGE
70 21 9.6
60 16 9.5
50 10 9.4
40 4 9.3
30 –1 9.1
20 –7 8.9
10 –12 8.7
0 –18 8.5
The battery temperature must be estimated by feel
and by the temperature the battery has been
exposed to for the preceding few hours.

ENGINE ELECTRICAL 6D – 3
ON-VEHICLE SERVICE
BATTERY CHARGING
Observe the following safety precautions when
charging the battery:
1. Never attempt to charge the battery when the fluid
level is below the lower level line on the side of the
battery. In this case, the battery must be replaced.
2. Pay close attention to the battery during the
charging procedure.
Battery charging should be discontinued or the rate
of charge reduced if the battery feels hot to the
touch.
Battery charging should be discontinued or the rate
of charge reduced if the battery begins to gas or
spew electrolyte from the vent holes.
3. In order to more easily view the hydrometer blue
dot or ring, it may be necessary to jiggle or tilt the
battery.
4. Battery temperature can have a great effect on
battery charging capacity.
5. The sealed battery used on this vehicle may be
either quick-charged or slow-charged in the same
manner as other batteries.
Whichever method you decide to use, be sure that
you completely charge the battery. Never partially
charge the battery.
JUMP STARTING
JUMP STARTING WITH AN AUXILIARY
(BOOSTER) BATTERY
CAUTION: Never push or tow the vehicle in an
attempt to start it. Serious damage to the emission
system as well as other vehicle parts will result.
Treat both the discharged battery and the booster
battery with great care when using jumper cables.
Carefully follow the jump starting procedure, being
careful at all times to avoid sparking.
WARNING: Failure to carefully follow the jump
starting procedure could result in the following:
1. Serious personal injury, particularly to your
eyes.
2. Property damage from a battery explosion,
battery acid, or an electrical fire.
3. Damage to the electronic components of one or
both vehicles.
Never expose the battery to an open flame or electrical
spark. Gas generated by the battery may catch fire or
explode. Remove any rings, watches, or other jewelry
before working around the battery. Protect your eyes by
wearing an approved set of goggles.
Never allow battery fluid to come in contact with your
eyes or skin.
Never allow battery fluid to come in contact with fabrics
or painted surfaces.
Battery fluid is a highly corrosive acid.Should battery fluid come in contact with your eyes,
skin, fabric, or a painted surface, immediately and
thoroughly rinse the affected area with clean tap water.
Never allow metal tools or jumper cables to come in
contact with the positive battery terminal, or any other
metal surface of the vehicle. This will protect against a
short circuit.
Always keep batteries out of the reach of young
children.
JUMP STARTING PROCEDURE
1. Set the vehicle parking brake.
If the vehicle is equipped with an automatic
transmission, place the selector lever in the “PARK”
position.
If the vehicle is equipped with a manual
transmission place the shift lever in the “NEUTRAL”
position.
Turn “OFF” the ignition.
Turn “OFF” all lights and any other accessory
requiring electrical power.
2. Look at the built-in hydrometer.
If the indication area of the built-in hydrometer is
completely clear, do not try to jump start.
3. Attach the end of one jumper cable to the positive
terminal of the booster battery.
Attach the other end of the same cable to the
positive terminal of the discharged battery.
Do not allow the vehicles to touch each other.
This will cause a ground connection, effectively
neutralizing the charging procedure.
Be sure that the booster battery has a 12 volt rating.
4. Attach one end of the remaining cable to the
negative terminal of the booster battery.
Attach the other end of the same cable to a solid
engine ground (such as the A/C compressor
bracket or the generator mounting bracket) of the
vehicle with the discharged battery.
This ground connection must be at least 450 mm
(18 in) from the battery of the vehicle whose battery
is being charged.
WARNING: Never attach the end of the jumper
cable directly to the negative terminal of the dead
battery.
5. Start the engine of the vehicle with the good battery.
Make sure that all unnecessary electrical
accessories have been turned “OFF”.
6. Start the engine of the vehicle with the dead battery.
7. To remove the jumper cables, follow the above
directions in the reverse order.
Be sure to first disconnect the negative cable from
the vehicle with the discharged battery.