2007 ISUZU KB P190 recommended oil

Engine Mechanical – V6 Page 6A1–54

3.1 Engine Oil
The procedure outlined below is typically the same for both rear wheel drive and all wheel drive vehicles.
Check
The following procedure is applicable to both rear wheel and all wheel drive vehicles
1 Run the engine to bring it to normal operating temperature.
2 Park the vehicle on a level surface. A vehicle that is not level will affect the accuracy of the level reading.
3 Stop the engine and wait 5 to 10 minutes to allow the oil to drain back into the oil pan.
4 Remove the oil level indicator (1) and wipe clean.
5 Insert the indicator, ensuring it is fully seated.
6 Slowly remove the indicator to avoid smearing. Hold it horizontally or with lower end slightly down to avoid
oil running along indicator.
7 Observe the oil level where it passes over the centre line of the indicator.
8 If the level is lower than the Add mark (2), add enough oil to the engine to reach the Upper mark (3).
Do not add too much oil as the reading should never
be above the Upper mark.
NOTE
When topping up the oil, allow approximately 5
to 10 minutes for the added oil to fully drain into
the oil pan.
Figure 6A1 – 23
Replace
NOTE
• Quicker and more complete draining will
occur if the engine oil is at normal operating
temperature. However, care must be taken to
avoid scalding from the hot oil.
• It recommended the oil filter be changed at
each engine oil change, refer to 3.2 Oil
Filter.
1 Remove the oil fill cap.
2 To ensure complete draining of the oil pan, raise the front and rear of the vehicle to maintain a level attitude. If not using a hoist, support the vehicle with safety stands, refer to 0A General Information.
3 Clean any foreign material from around the oil drain plug and place a suitable, clean drain tray under the engine.

The oil may be hot. Avoid contact with the oil.
Ensure that eyes and skin are protected.
4 Remove the drain plug (1), taking care to avoid scalding from the hot oil. Allow the oil to drain.
5 Clean and inspect the drain plug threads. If damaged, replace the drain plug.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–55


Figure 6A1 – 24
6 Once the oil has completely drained, reinstall the drain plug and tighten to the correct torque specification.
Oil pan drain plug
torque specification ............................................25.0 Nm
7 Replace the oil filter, refer to 3.2 Oil Filter.
8 Lower the vehicle to the ground and fill with the specified amount of SAE 5W 30 lubricant.
Engine Oil Capacity:
With Oil Filter Change ........................................6.5 litres
9 Install the oil fill cap.
10 Start the engine and check for leaks.
Pressure Check
1 Run the engine to bring it to normal operating temperature.
2 Park the vehicle on a level surface. A vehicle not level will affect the accuracy of the level reading.
3 Stop the engine and wait 5 to 10 minutes to allow the oil to drain back into the oil pan.
4 Check the oil level and top up with the recommended engine oil as required, refer to Check, in this Section.
5 Remove the engine oil pressure sensor (1), refer to 6C1-3 Engine Management – V6 – Service
Operations.
6 Install the oil pressure gauge adaptor, Tool No. J36648-A into the oil pressure sender hole in the oil
filter housing.
7 Install a suitable oil pressure gauge into the adaptor.
8 Start the engine.
9 Measure and record the pressure reading on the gauge at idle and 2000 r.p.m. Compare the results
with the specification.
Minimum engine oil pressure
@ idle................................................................... 69 kPa
@ 2000 r.p.m. .................................................... 138 kPa
10 If the engine oil pressure is not to specification, refer to 2.19 Engine Oil Pressure Diagnosis.
11 After completing the engine oil pressure check, stop the engine and remove the oil pressure gauge.
Figure 6A1 – 25
12 Reinstall the oil pressure sensor, refer to 6C1-3 Engine Management – V6 – Service Operations.
13 Start the engine and check for leaks.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–167

Inspect
Visual Inspection
1 Inspect the cylinder head (1) camshaft bearing
surfaces for the following conditions:
• excessive scoring or pitting,
• discoloration from overheating, and
• deformation from excessive wear.
2 If any of the above conditions exist on the camshaft bearing surfaces, replace the cylinder head. Do not
machine the camshaft bearing journals.

Figure 6A1 – 287
3 Inspect the cylinder head for the following: • Cracks, damage or pitting in the combustion chambers.
• Debris in the oil galleries. continue to clean the galleries until all debris is removed.
• Coolant leaks or damage to the deck face sealing surface. if coolant leaks are present, measure the surface
warpage as described under Cylinder Head Measurement within this Section.
• Burrs or any defects that would degrade the sealing of a new secondary camshaft chain tensioner gasket.
• Damage to any gasket surfaces.
• Damage to any threaded bolt holes.
• Burnt or eroded areas in the combustion chamber.
• Cracks in the exhaust ports and combustion chambers.
• External cracks in the water passages.
• Restrictions in the intake or exhaust passages.
• Restrictions in the cooling system passages.
• Rusted, damaged or leaking core plugs.
4 If the cylinder head is cracked or damaged, it must be replaced. No welding or patching of the cylinder head is recommended.
Cylinder Head Measurement
NOTE
For all cylinder head and associated component
specifications, refer to 5 Specifications.
Camshaft Journal Clearance
1 Install the camshaft bearing cap in the cylinder head without the camshaft.
2 Install the camshaft cap bolts and tighten to the correct torque specification
Camshaft bearing cap attaching bolt........8.0 – 12.0 Nm.
3 Measure the camshaft bearings using an inside micrometer.
4 Subtract the camshaft journal diameter from the camshaft bearing diameter. This will provide the running clearance. If the running clearance exceeds specifications and the camshaft journals are within specification, replace the
cylinder head.
Camshaft Journal Alignment
1 Ensure the camshafts are serviceable, refer to 3.19 Camshaft for measuring procedures.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–184

4 Major Service Operations
ATTENTION
The V6 engine is a combination of numerous components, containing machined, honed, polished and lapped
surfaces manufactured on the latest, high technology production equipment. Many of the components
contain tolerances measured in thousandths of a millimetre. Consequently, when any engine component is to
be serviced, care and cleanliness are extremely important.
Prior to re-assembly of the V6 engine, all components must be cleaned and inspected in accordance with the
relevant procedures throughout this section, and replaced or repaired where required.
In addition to cleaning and inspecting components, a liberal coating of engine oil should be applied to friction
surfaces during assembly to protect and lubricate the surfaces on initial operation.
When performing any service operation contained in this Section, it should be understood that correct
cleaning and protection of machined surfaces and friction areas is part of the repair procedure. This is
considered standard workshop practice, even if not specifically stated. Torque values must be used as
specified during reassembly to ensure correct retention of all components.
Through out this section, fastener torque wrench specifications may be accompanied with the following
identification marks:
■ Fasteners must be replaced after loosening.



Fasteners either have micro encapsulated sealant applied or incorporate a mechanical thread lock and
should only be re-used once. If in doubt, replacement is recommended.

If one of these identification marks is present alongside a fastener torque wrench specification, the
recommendation regarding that fastener must be adhered to.
4.1 Engine Removal
CAUTION
• Allow the engine to cool to at least 50 °
°°
°
C,
before attempting fastener removal.
• As aluminium has a greater rate of thermal
expansion than that of cast iron,
aluminium bolt hole threads will change
dimension to a larger extent than cast iron
bolt threads.
• If a bolt or other threaded component is
removed before the engine is allowed to
cool to at least 50 °
°°
°
C, threads could be
pulled from the cylinder block or cylinder
head.
• Do not use impact tools to remove bolts
during engine disassembly. While this may
be common practice with cast iron engine
components, use of these tools is likely to
pull the aluminium threads in the cylinder
block or head of this engine.

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Engine Mechanical – V6 Page 6A1–198

k Timing chains, tensioners, shoes, guides & sprockets, refer to 3.16 Timing Chains, Tensioners, Shoes and
Guides.
l Cylinder head assemblies, refer to 3.22 Cylinder Head Assembly.
m Oil pan assembly, refer to 4.2 Oil Pan and Oil Pump Suction Pipe Assembly.
n Piston and connecting rod assemblies, refer to 4.5 Pistons, Pins, Rings, Connecting Rods and Big-end Bearings.
o Crankshaft assembly, refer to 4.6 Crankshaft and Main Bearings.
p Piston oil nozzles, refer 4.5 Pistons, Pins, Rings, Connecting Rods and Big-end Bearings.
Reassemble
Reassembly of the engine assembly is the reverse of the disassembly procedure.
Reinstall
Reinstallation of the engine assembly is the reverse to the removal procedure, noting the following:
NOTE
Refer to 6 Torque Wrench Specifications
for the correct torque specifications.


1 Tighten the fasteners to the correct torque specification.
Engine ground connector bolt
torque specification ............................................10.0 Nm
Power steering high pressure line
attaching bolt torque specification .............8.0 – 12.0 Nm
Power steering high pressure line
flare nut torque specification ...................25.0 – 35.0 Nm
Engine mount to frame attaching bolt
torque specification .................................44.0 – 60.0 Nm
Knock Sensor Attaching Nut
torque specification ............................................23.0 Nm
2 Use only the specified engine lubricant type and quantity. It is recommended that a fluorescent oil dye, such as that contained in J 28481-B, be added to assist in any future oil leak diagnosis.
3 Fill the cooling system with the correct quantity and grade of coolant, refer to 6B1 Engine Cooling – V6.
4 Check transmission fluid level, replenishing as required, using the specified lubricant for the transmission fitted, refer to 7C1 Automatic – 4L60E – General Information.
5 Disable the ignition system, refer to 6C1-3 Engine Management – V6 – Service Operations.
6 Crank the engine several times. Listen for any unusual noises or evidence that parts are binding.
7 Enable the ignition system. Start the engine and listen for any unusual noises.
8 Check the vehicle oil pressure gauge or warning indicator and confirm the engine has acceptable oil pressure. If required, install an oil pressure gauge and measure the engine oil pressure, refer to 2.19 Engine Oil Pressure
Diagnosis.
9 Run the engine at about 1,000 r.p.m. until the engine has reached normal operating temperature.
10 Listen for any unusual noises.
11 Check for oil, fuel, coolant and exhaust leaks while the engine is running, correcting as required.
12 Perform a final inspection for correct engine oil and coolant levels.

4.2 Oil Pan and Oil Pump Suction Pipe Assembly
Remove
1 Remove the engine assembly from the vehicle, refer to 4.1 Engine .
2 Separate the engine and transmission assemblies, refer to 7C1 Automatic – 4L60E – General Information.
3 Mount the engine assembly on a suitable engine stand.
4 Remove the engine front cover, refer to 3.15 Front Cover Assembly.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–244

11 Install the new right-hand front oil pan rail oil gallery
expansion plug (1).

Figure 6A1 – 460
12 Install the oil jet (2), three places.

13 Install the oil jet attaching bolt (1), three places and tighten to the correct torque specification.



Oil jet attaching bolt
torque specification ...................................8.0 – 12.0 Nm

Figure 6A1 – 461
4.8 Thread Repairs
General Information
The thread repair process involves a solid, thin walled, self-locking, carbon steel, bushing type insert. During the insert
installation process, the installation driver tool cold-rolls the bottom internal threads and expands the bottom external
threads of the insert into the base material. This action mechanically locks the insert into place.
This Section describes the recommended method of repairing threads in three specific areas of the engine.
• general thread repair,
• cylinder block main bearing cap bolt hole thread repair, and
• cylinder head bolt hole thread repair.
For detailed descriptions of all thread specifications used refer to 4.9 Thread Repair Specifications.
The drill-bit and counter-bore tool from the thread repair kit, Tool No. J-42385-700 and J-42385-2000 are designed for
use with either a suitable tap wrench or drill motor. Limited access and larger hole repair may process better using a tap
wrench. An extension from Tool J 43965 may also be required to drive the thread repair tooling dependent on access to
the hole being repaired. Use only a tap wrench when tapping the hole and during installation of the insert.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–292

6 Torque Wrench Specifications
ATTENTION
„
„„
„
Fasteners must be replaced after loosening.



Fasteners either have micro encapsulated sealant applied or incorporate a mechanical thread lock and
should only be re-used once. If in doubt, replacement is recommended.

Oil Pan Drain Plug ................................................................................ 25.0 Nm
Oil Filter Adaptor Attaching Bolt ................................................ 20.0 – 26.0 Nm
Oil Level Indicator Tube Attaching Bolt........................................ 8.0 – 12.0 Nm
Accessory Drive Belt Idler Pulley Attaching Bolt................................... 50.0 Nm
Accessory Drive Belt Tensioner Attaching Bolt .................................... 50.0 Nm
Power Steering Reservoir Bracket Attaching Screw.............................. 9.0 Nm
Power Steering Pump Bracket Attaching Bolt ........................... 49.0 – 67.0 Nm
Upper Intake Manifold to Lower Intake Manifold Attaching Bolt ........... 23.0 Nm
Upper Intake Manifold to Cylinder Head Attaching Bolt........................ 23.0 Nm
Lower Intake Manifold to Cylinder Head Attaching Bolt........................ 23.0 Nm
Fuel Injector Wiring Harness Bracket Attaching bolt .............................. 9.0 Nm
Exhaust Manifold to Cylinder Head Attaching Bolt ..................... 17.0 - 23.0 Nm
Exhaust Manifold Heat Shield Attaching Bolt ............................... 8.0 - 12.0 Nm
Battery Harness Ground Terminal Attaching Nut ................................. 13.0 Nm
Camshaft Cover Attaching Bolt ................................................... 8.0 – 12.0 Nm
Engine Ground Connector Bolt............................................................. 10.0 Nm
Engine Wiring Harness Former Attaching Bolt .......................... 12.0 – 16.0 Nm
„ Crankshaft Balancer Assembly Attaching Bolt:
Stage 1 ..................................................................................... 90.0 –110.0 Nm
Stage 2 ....................................................................................................... 150 °
Engine Front Cover Assembly Attaching Bolt ............................ 20.0 – 26.0 Nm
Camshaft Intermediate Driveshaft Sprocket Attaching Bolt ....... 58.0 – 72.0 Nm
Secondary Timing Chain Guide Attaching Bolt.......................... 20.0 – 26.0 Nm
Secondary Timing Chain Shoe Attaching Bolt ........................... 20.0 – 26.0 Nm
Secondary Timing Chain Tensioner Attaching Bolt ................... 20.0 – 26.0 Nm
Primary Timing Chain Upper Guide Attaching Bolt.................... 20.0 – 26.0 Nm
Primary Timing Chain Tensioner Attaching Bolt ........................ 20.0 – 26.0 Nm
Oil Pump Assembly Attaching Bolt ............................................ 20.0 – 26.0 Nm
Camshaft Sprocket Attaching Bolt ............................................. 49.0 – 67.0 Nm
Exhaust Camshaft Sprocket Attaching Bolt ............................... 49.0 – 67.0 Nm
Camshaft Bearing Cap Attaching Bolt ......................................... 8.0 – 12.0 Nm
Cylinder Head Threaded Plug .............................................................. 31.0 Nm
„ Cylinder Head M11 Attaching Bolt:
Stage 1 ...................................................................................... 40.0 – 50.0 Nm
Stage 2 ....................................................................................................... 120 °
„ Cylinder Head M8 Attaching Bolt:
Stage 1 ...................................................................................... 12.0 – 18.0 Nm
Stage 2 ......................................................................................................... 60 °
Engine Mount Bracket to Cylinder Block Attaching Bolt ............ 43.0 – 57.0 Nm
Engine Mount to Bracket Attaching Nut ..................................... 70.0 – 90.0 Nm
Engine Mount to Frame Attaching Nut....................................... 44.0 – 60.0 Nm
Engine Lift Bracket Attaching Bolt .......................................... 58.0 – 72.0.0 Nm
Knock Sensor Attaching Nut................................................................. 23.0 Nm

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Engine Mechanical – V6 Page 6A1–47
Page 6A1–47
2.17 Engine Oil Consumption Diagnosis
Definition
Excessive oil consumption (not due to leaks) is the use of 3 litres or more of engine oil within 10,000 kilometres. Prior to
performing oil pressure testing, a prelim inary inspection of the vehicle should be performed. During the preliminary visual
inspection, the following likely causes of excessive oil usage should be investigated.
Cause Correction
External oil leaks. Refer to 2.18 Engine Oil Leak Diagnosis.
Incorrect oil level or reading of the oil level indicator. C heck for the correct oil level, refer to 3.1 Engine Oil.
Incorrect oil viscosity.
Replace the engine oil, using the recommended SAE grade
of engine oil, refer to 3.1 Engine Oil.
Continuous high-speed driving or severe usage. Service vehicle more frequently, refer to 0B Lubrication and
Service.
Crankcase ventilation system restricted or malfunctioning. Repair or replace crankcase ventilation system components
as required, refer to 6C1-3 Engine Management – V6 –
Service Operations.
Worn valve guides and or valve stems. Inspect and repair valves and valve guides as required,
refer to 3.22 Cylinder Head Assembly.
Worn or damaged valve stem oil seal. Replace valve stem oil seals as required, refer to 3.22
Cylinder Head Assembly.
Piston rings broken, worn or not seated correctly. Allowing adequate time for the piston rings to seat correctly,
replace piston rings as required, refer to 4.5 Pistons, Pins,
Rings, Connecting Rods and Big-end Bearings.
Piston rings incorrectly installed or not matched to cylinder
bore oversize. Replace piston rings as required, refer to 4.5 Pistons, Pins,
Rings, Connecting Rods and Big-end Bearings.

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