2007 ISUZU KB P190 lock

Engine Mechanical – V6 Page 6A1–50
Page 6A1–50
2.19 Engine Oil Pressure Diagnosis
If the engine oil pressure is below the specified value, inspect the engine and components for the following:
• loose oil filter adaptor bolts,
• faulty oil filter adaptor seals,
• worn or faulty oil pump,
• loose oil pump bolts,
• loose, blocked or damaged oil pump suction pipe,
• faulty oil pump suction pipe seal,
• faulty oil pump pressure relief valve,
• faulty or incorrectly installed oil gallery plugs,
• excessive bearing clearance in one of the following:
• connecting rods big end/s,
• crankshaft main journal/s,
• camshaft/s,
• camshaft sprocket/s, and
• cracked, porous or restricted oil galleries, or broken lash adjuster/s.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–66
Page 6A1–66
3 Minor 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 thousa ndths of a millimetre. Consequently, when any e ngine component is to
be serviced, care and cleanliness are extremely important.
Prior to re-assembly of the engine, all components mu st be cleaned and inspected in accordance with the
relevant clean and inspect procedur es throughout this Section, and repl aced 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 lubr icate the surfaces on initial operation.
When performing any service operation, 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 va lues must be used as specified during reassembly to
ensure correct retention of all components.
Through out this section, fastener torque wrench sp ecifications may be accompanied with the following
identification marks:
■ Fasteners must be replaced after loosening.
Fasteners either have micro encapsulated sealant a pplied 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 alongs ide a fastener torque wrench specification, the
recommendation regarding that fastener must be adhered to.
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 a llow the oil to drain back into the oil pan.
4 Remove the oil level indicator (1) and wipe clean.
5 Insert the indicator, ens uring 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

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Engine Mechanical – V6 Page 6A1–70
Page 6A1–70
3.3 Oil Filter Adaptor
Remove

Disconnection of the battery affects
certain vehicle electronic systems, refer to
1.1 WARNING, CAUTION and NOTES before
disconnecting the battery.
1 Disconnect the battery negative terminal.
2 Disconnect the wiring harness connecto r from the oil pressure sender.

3 Remove the oil filter adaptor attaching bolts (2), four
places.
4 Remove the oil filter adaptor and discard the gasket (3).
5 Clean the surfaces of t he adaptor and cylinder block.

• Do not use a screwdriver or similar to
prise the oil filter adapter from the engine
as damage to the sealing surface may
occur.
• If required, use a rubber mallet to tap the
oil filter adapter to loosen the
components prior to separating.
Tapping should be done at bends,
corners or reinforced areas to prevent
distortion of parts.
Figure 6A1 – 27
Reinstall
Reinstallation of the oil filter adaptor is the reverse of the remo val procedure, noting the following:
1 A new gasket must be used.
2 Loosely install the oil filter adaptor attaching bolts, then tighten all fast eners to the correct torque specification.
Oil filter adaptor attaching bolt
torque specificatio n ...................................20.0- 26.0 Nm

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–72
Page 6A1–72
3.5 Accessory Drive Belt
RWD Vehicle
Remove
1 Remove the air intake duct from between the air flow meter and the throttle body, refer to
Section 6C1-3 Engine Management – V6 – Service Operations.
2 Note the accessory drive belt (1) routing.
Figure 6A1 – 29
3 Using a suitable ½” drive socket bar (1), rotate the drive belt tensioner (2) clockwise, to reduce belt
tension.
4 While holding the tensioner in the reduced tension
position, remove the accessory drive belt (3).

NOTE
If required use an assistant to maintain the tensioner in the required position.
CAUTION
If running the engine with the accessory
drive belt removed, the coolant pump will
not be operating and the engine may
overheat if left unsupervised even for a short
period.
Figure 6A1 – 30

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Engine Mechanical – V6 Page 6A1–73
Page 6A1–73
Reinstall
1 Install the drive belt over the A/C compressor, idler pulley, power steering pump, coolant pump, generator and
tensioner pulleys.
2 Using a suitable ½” drive socket bar (1), rotate the driv e belt tensioner (2) clockwise, refer to Figure 6A1 – 30.
3 With an assistant holding the tensi oner in the required position, feed the accessory drive belt (3) over the
crankshaft pulley.
4 Slowly release the drive belt tensioner mechanism.
NOTE
Ensure the drive belt ribs are correctly aligned
with the grooves in the accessory drive pulleys or
damage to the drive belt and accessory drive
components and pulleys may occur.
5 Reinstall the air intake duct to the ai r flow meter and the throttle body, refer to Section 6C1-3 Engine Management
– V6 – Service Operations .
6 Run the engine to ensure correct operation.

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Engine Mechanical – V6 Page 6A1–76
Page 6A1–76
3.8 Power Steering Pump Bracket
Remove
1 Remove the power steering pump and reservoir, refer to Section 3B Steering.
2 Remove the three bolts (1), (3) and (4) attaching t he power steering pump bracket (5) to the engine block.
3 Remove the power steering pump bracket.

Figure 6A1 – 33
Reinstall
Reinstallation of the power steering pump and pump bracket is the reverse of the removal procedure, noting the
following:
1 Hand start the bolts before tightening.
2 Tighten the bolts to the co rrect torque specification.
Power steering pump bracket
attaching bolt torque specification ......................22.0 Nm



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Engine Mechanical – V6 Page 6A1–78
Page 6A1–78
3 Retract the throttle body wiring connector lock (3).
4 While pressing the connector latch in the direction of
the arrow (4), disconnect the throttle body wiring
connector.
5 Disconnect the throttle body connector wiring harness from its retaining clip (5).
6 Remove the main wiring harness retainer pin (6) from the intake manifold by pushing from the front to the
rear using a suitable piece of 5 mm steel rod (or an
Allen key).

The following precautions must be followed
when disconnecting the throttle body wiring
connector:
• Do not use any mechanical device such
as a screwdriver to disengage the
harness connector (1) from the throttle
body (2).
• When retracting the throttle wiring
connector lock (3), take care not to
disengage the lock from the connector.
• Do not pull on the connector wires.
• Take care not to break the barbed
harness retainer pin (6) while removing
the harness retainer from the intake
manifold.
• Should the pin be broken, then it is
vital that a new harness retainer is
fitted to the wiring harness shield. If
not, the harness will foul the engine
drive belt.
Figure 6A1 – 35
7 Disconnect the brake booster hoses from the upper intake manifold:

Figure 6A1 – 36

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Engine Mechanical – V6 Page 6A1–82
Page 6A1–82
Reinstall
Reinstallation of the upper intake manifold and the upper and lower intake manifold assembly is the reverse of the
removal procedure, noting the following:
1 Only new gaskets are to be fitted betw een the upper and lower intake manifolds.
CAUTION
Tighten the intake manifold bolts in a circular
pattern starting at the centre bolt and moving
outward.
2 Ensure that all fasteners are tightened to the correct torque specification.
Upper intake manifold to lower
intake manifold attaching bolt
torque specificat ion ............................................ 23.0 Nm
Upper intake manifold to
cylinder head attaching bolt
torque specification ............................................ 23.0 Nm

Incorrect wiring connector installation may
cause component malfunction or component
damage.
3 Ensure all wiring connectors are fully engaged and if applicable, locked in place.
4 Ensure all wiring harnesses are correctly routed and attached securely in their retaining clips.
5 Ensure that all hoses and pipes ar e routed correctly and that any retaining clips are correctly installed.
6 Start and run the engine to c heck for correct operation.

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