2007 ISUZU KB P190 service

Engine Mechanical – V6 Page 6A1–87
Page 6A1–87

When the intake manifold is removed, plug
each of the cylinder head intake openings
with lint free cloth, to stop the entry of foreign
material into the intake ports.
21 Remove the upper and lower intake manifold assembly from the engine.
22 Remove lower intake mani fold to cylinder head gasket.
Disassemble
1 Disconnect the EVAP hose (1) from the upper intake
manifold (2).
2 Remove the bolts (3) (70 mm long) attaching the upper intake manifold to the lower intake manifold (4).
NOTE
These bolts are located at the front left and rear
right of the upper intake manifold, as shown.
3 Remove the upper intake manifold from the lower intake manifold.
4 Remove and discard the upper to lower intake manifold gaskets.

Do not reuse the upper to lower intake
manifold gaskets (5).
5 Remove the EVAP hose from the retaining clip (6) attached to the lower intake manifold.
6 Remove the following from the upper intake manifold, refer to Section 6C1-3 Engine Management – V6 –
Service Operations :
• BARO Sensor and
• Throttle Body assembly


Figure 6A1 – 52
7 Remove the fuel rail and in jector assembly. Refer to
Section 6C1-3 Engine Management – V6 – Service
Operations .

The following precautions must be followed
when removing the fuel rail and injector
assembly:
• Care must be taken when removing the
fuel rail and injector assembly to
prevent damage to the injector spray
tips and injector harness connector
terminals.
• Support the fuel rail and injector
assembly after removal.
• Plug all fuel line and manifold openings
after removal to prevent dirt and other
contaminants from entering the fuel
system.


Figure 6A1 – 53

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–94
Page 6A1–94
3.12 Camshaft Cover
Remove
1 Remove the intake manifold assembly, refer to 3.10 Intake Manifold Assembly – Complete .
2 For the left-hand side, remove the evaporative (EVAP) emission canister purge solenoid, refer to Section 6C1-3 Engine Management – V6 – Service Operations.
3 Remove the two bolts (1) attaching the engine wiring harness former to the rear of the cylinder heads.
4 Unclip the transmission v ent tube (2) from the engine
wiring harness.

Figure 6A1 – 61
5 Disconnect the oxygen sensor wiring harness connector (1) from the engine wiring harness (2), left-
hand shown, right-hand similar.

Figure 6A1 – 62

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–95
Page 6A1–95
6 Remove the bolt (1) attaching the ground connector
(2) to the cylinder head.
7 Fro the left-hand side, disconnect the engine coolant temperature (ECT) sensor wiring connector (3).
8 Unclip the engine wiring harness retaining lugs from the side of the camshaft cover.
Figure 6A1 – 63
9 For the right-hand side, remove the engine wiring harness retaining clip (1) from the engine control
module (ECM) bracket (2).
Figure 6A1 – 64
10 Disconnect the camshaft position (CMP) sensor wiring connector (1).
11 Unclip the engine wiring harness retaining lug (3) from the front of the camshaft cover.
12 Remove the ignition coil assemblies; refer to Section 6C1-3 Engine Management – V6 – Service
Operations .
13 Move the engine wiring harness clear of the camshaft cover.



Figure 6A1 – 65

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–104
Page 6A1–104
3.15 Front Cover Assembly
Remove
1 Drain the engine coolant, refer to Section 6B1 Engine Cooling.
2 Remove the water outlet pipe and coolant pump assembly, refer to Section 6B1 Engine Cooling:
3 Remove the camsha ft covers, refer to 3.12 Camshaft Cover .
4 Remove the crankshaft bal ancer assembly, refer to 3.13 Crankshaft Balancer Assembly .
5 Disconnect the purge vent hose from the water outlet pipe.
NOTE
Do not disconnect the power steering pipes or
drain the power steering fluid.
6 Remove the power steering pump reservoir mounting bracket, refer to 3.8 Power Steering Pump Bracket.
7 Remove the camshaft position sensor, refer to Section 6C1-3 Engine Management – V6 – Service Operations.
NOTE
Do not disconnect the A/C compressor pipes.

8 Remove the bolt (2), 22 places, attaching the front cover assembly (1).

CAUTION
Only use the prise points and a bolt in the
jackscrew hole to remove the engine front
cover.

9 Loosely install a 10 x 1.5 mm bolt in the jackscrew hole (1).

10 Using the prise points (2) located at the edge of the
front cover and the jackscrew, shear the RTV sealant.
Figure 6A1 – 83






Figure 6A1 – 84

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–114
Page 6A1–114
Remove
Right-hand Secondary Timing Chain
CAUTION
After removing the upper intake manifold, and
spark plugs, plug any openings to prevent dirt
and other contaminants from entering.
1 Remove the engine front cover assembly, refer to 3.15 Front Cover Assembly.
2 Remove the spark plugs to aid crankshaft/engine rotation, refer to Section 6C1-3 Engine Management – V6 –
Service Operations .
3 Install Tool No. EN46111 (1) onto the crankshaft (2).

Figure 6A1 – 103
4 Using Tool No. EN46111 (1), rotate the crankshaft in a clockwise direction until the crankshaft sprocket
timing mark (2) is aligned with the indexing mark (3)
on the oil pump housing.
NOTE
Graphic shows 'Early Type' crankshaft sprocket,
'Late Type' similar.

Figure 6A1 – 104

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–119
Page 6A1–119
NOTE
Do not remove the primary timing chain lower
guide (1). The primary timing chain lower guide
is not serviced separately. If the primary timing
chain lower guide requires replacement, the oil
pump assembly (2) must be replaced.


Figure 6A1 – 117
6 Remove the primary timing chain (1). NOTE
For ease of removal, remove the chain from the
crankshaft sprocket, bef ore attempting to
remove from the camshaft intermediate
sprockets.


Figure 6A1 – 118
7 If required, remove the right-hand camshaft intermediate sprocket bolt (1) and remove the
sprocket (2).

Figure 6A1 – 119

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–125
Page 6A1–125
Crankshaft Sprocket
1 Inspect the crankshaft sprocket for the following:
• sprocket damage (1),
• bore damage (2),
• keyway damage (3), and
• damage to the cushion material (4).
2 Replace a damaged sprocket as required.


Figure 6A1 – 132
Primary Timing Chain Upper Guide
1 Inspect the primary timing chain upper guide for the following:
• worn guide surface (1),
• cracked or broken guide surface (2), and
• cracked or damaged guide base (3).
2 Replace a damaged guide as required.

Figure 6A1 – 133
Primary Timing Chain Lower Guide
1 Inspect the primary timing chain lower guide for the following:
• worn guide surface (1),
• cracked or broken guide surface (2), and
• cracked or damaged guide base (3).
2 Replace the primary timing chain lower guide by replacing the oil pump assembly, refer to
3.17 Oil Pump Assembly .

NOTE
The primary timing chain lower guide is not
serviced separately and is part of the oil pump
assembly.

Figure 6A1 – 134

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–152
Page 6A1–152
NOTE
Do not remove the primary timing chain lower
guide (1). The primary timing chain lower guide
is not serviced separately. If the primary timing
chain lower guide must be replaced, the oil
pump assembly (2) must be replaced.


Figure 6A1 – 207
12 Ensure the primary timing chain upper guide is selected and orientated correctly.


Figure 6A1 – 208
13 Install the primary ti ming chain upper guide (1).
14 Install the primary timing chain upper guide bolts (2) and tighten to the correct torque specification.



Primary timing chain upper guide
attaching bolt torque spec ification ........... 20.0 – 26.0 Nm


Figure 6A1 – 209

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ISUZU KB P190 2007