2007 ISUZU KB P190 oil

Engine Mechanical – V6 Page 6A1–209
Page 6A1–209
7 Observe the markings on the right-hand cylinder head
camshaft bearing caps. Each bearing cap is
marked (1) to identify its location. The markings have
the following meanings:
• The raised feature must always be oriented
toward the centre of the cylinder head.
• The I indicates the intake camshaft.
• The E indicates the exhaust camshaft.
• The number 1, 3, 5 indicates the cylinder
position from the fr ont of the engine.
8 Apply a liberal amount of engine oil to the camshaft bearing caps.


Figure 6A1 – 348
9 Install the camshaft bearing thrust cap (1) in the first journal of the right-hand cylinder head.
10 Install the remaining bearing caps (2) with their orientation mark toward t he centre of the cylinder
head.
11 Hand start all the camshaft bearing cap bolts (3).


Figure 6A1 – 349
12 Tighten the camshaft bearing cap bolts to the correct torque specification and in the sequence shown.

Camshaft bearing cap attaching
bolt torque specification:
Stage 1: .................................................... 8.0 – 12.0 Nm
13 Loosen the centre intake camshaft bearing cap bolts
1 and 2, and the centre exhaust camshaft bearing cap
bolts 3 and 4.
14 Retighten the centre camsha ft bearing cap bolts 1, 2,
3 and 4 to the correct torque specification.

Camshaft bearing cap attaching
bolt torque specification:
Stage 2: .................................................... 8.0 – 12.0 Nm
15 Install the right-hand cylinder head camshaft
sprocket, refer to 3.18 Camshaft Sprocket .

Figure 6A1 – 350

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–210
Page 6A1–210
Left-hand Side
1 Select the correct camshaft for the particular
installation location. ID markings can be found on the
rear end of each camshaft. The ID markings are
defined as follows:
• The first five digits refer to the date and time of
production.
• Example = 3L18H.
• Digits six through nine refer to engine
production code.
• LY7 = Alloytec 190 engine.
• The last two digits refer to position:
• LI = left-hand intake.
• LE = left-hand exhaust.
• RI = right-hand intake.
• RE = right-hand exhaust.


Figure 6A1 – 351
2 Apply a liberal amount of engine oil to the camshaft journals and the left-hand cylinder head camshaft
carriers.


Figure 6A1 – 352
3 Position the camshafts (1) on the cylinder head and assemble the camshaft spro ckets to the camshafts.



NOTE
Install the camshaft sprocket bolts but do not
tighten at this stage.


Figure 6A1 – 353

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–211
Page 6A1–211
4 Ensure the camshaft lobes are in the neutral position
with the flats on the back of the camshafts up and
parallel (1) with the left-hand cylinder head camshaft
cover rail.
5 Ensure the marks on the left-hand exhaust camshaft position actuator and timing chain, made prior to the
disassemble operation are aligned.
6 Ensure the marks on the left-hand intake camshaft position actuator and timing chain, made prior to the
disassemble operation are aligned.


Figure 6A1 – 354
7 Observe the markings on the left-hand cylinder head camshaft bearing caps. Each bearing cap is
marked (1) to identify its location. The markings have
the following meanings:
• The raised feature must always be oriented
toward the centre of the cylinder head.
• The I indicates the intake camshaft.
• The E indicates the exhaust camshaft.
• The number 2, 4, 6 indicates the cylinder
position from the fr ont of the engine.
8 Apply a liberal amount of engine oil to the camshaft bearing caps.


Figure 6A1 – 355
9 Install the camshaft bearing thrust cap (1) in the first journal of the left-hand cylinder head.
10 Install the remaining bearing caps (2) with their orientation mark toward t he centre of the cylinder
head.
11 Hand start all the camshaft bearing cap bolts (3).


Figure 6A1 – 356

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–215
Page 6A1–215
3.22 Stationary Hydraulic Lash Adjuster
Remove
1 Remove the rocker arms from the appropriate
cylinder head, refer to 3.20 Rocker Arm.
2 Remove the stationary hydraulic lash adjuster (SHLA) from the cylinder head (2).


CAUTION
• Do not stroke/cycle the stationary
hydraulic lash adjuster (1) plunger
without oil in the lower pressure
chamber.
• Do not allow the stationary hydraulic lash
adjuster to tip over, plunger down, after
the oil fill.



Figure 6A1 – 362
Clean and Inspect
1 Inspect the stationary hydraulic lash adjuster (SHLA) in the following areas:
• a plugged oil passage (1),
• a scored or worn camshaft follower pivot
area (2),
• a damaged or broken retainer (3), and
• a severely scuffed or worn SHLA body (4).
2 Replace the SHLA as required.

Figure 6A1 – 363

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–216
Page 6A1–216
Reinstall
1 Fill the stationary hydraulic lash adjuster (SHLA) with
clean engine oil. Take precautions to prevent
scratching the pivot s phere area of the SHLA.
2 Lubricate the SHLA bores in the cylinder head with clean engine oil.
3 Install the SHLA in the cylinder head (2).
4 Apply a liberal amount of commercially available camshaft/lifter prelube to the SHLA pivot spheres.
5 Install the rocker arms, refer to 3.20 Rocker Arm.


CAUTION
Ensure each lash adjuster (1) is filled with
clean engine oil and the adjuster does not
tip over, plunger down, before the
installation. The loss of oil in the adjuster
lower pressure chamber, or the dry
stroking/cycling of the adjuster plunger, will
allow air to enter the high pressure chamber
of the valve lifter. Air in the high pressure
chamber of the adjuster may not be purged
causing cavitation and extensive engine
component damage.

Figure 6A1 – 364


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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–218
Page 6A1–218
Left-hand Side (Bank 2) Cylinder Head
1 Remove the intake manifold assembly, refer to 3.10 Intake Manifold Assembly – Complete .
2 Remove the exhaust manifold, refer to 3.11 Exhaust Manifold Assembly.
3 Remove the power steering reservoi r and pump mounting brackets, refer to 3.8 Power Steering Pump Bracket.
NOTE
Do not disconnect the power steering pipes
and/or hoses.
4 Remove the oil filter adapter upper bolt. NOTE
Do not remove the oil filter adapter.
5 Remove the engine coolant temper ature (ECT) sensor, refer to Section 6C1-3 Engine Management – V6 – Service
Operations .
6 Remove engine harness ground terminal attach ing bolt from cylinder head, refer to Section 8A Electrical Body &
Chassis .
7 Remove the left-hand bank secondary timing chain, refer to 3.16 Timing Chains, Tensioners, Shoes and Guides.
8 Remove the camshaft position actuators, refer to 3.18 Camshaft Sprocket.
9 Remove the front M8 (1) cylinder head attaching bolt, two places.
10 Remove the cylinder head attaching bolt (2), eight places.
11 Remove the cylinder head (3).


Figure 6A1 – 367
12 Remove and discard the cylinder head gasket (1).


Figure 6A1 – 368

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–219
Page 6A1–219
Disassemble
1 Using an appropriately sized deep socket (1) and a
plastic hammer (2), lightly tap on the valve spring
retainer to loosen the valve collets.


CAUTION
Ensure valve heads will not contact anything
during this step in order to avoid bending or
damage.

Figure 6A1 – 369
CAUTION
Do not compress the valve springs less than
24.0 mm. Contact between the valve spring
retainer and the valve stem oil seal can
cause potential valve stem oil seal damage.

Compressed valve springs (1) have high
tension against the valve spring
compressor (2). Valve springs that are not
correctly compressed by, or are released
from the valve spring compressor can be
ejected from the valve spring compressor
with intense force. Use care when
compressing or releasing the valve spring
with the valve spring compressor and when
removing or installing the valve stem keys.
Failing to use care may cause personal
injury.
2 Compress the valve spring (1) using valve spring compressor Tool No. J-8062 (2) and adaptor Tool No.
EN-46119.


Figure 6A1 – 370

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–221
Page 6A1–221
CAUTION
Never reuse a valve stem oil seal.
8 Remove the valve stem oil seal using Tool No. EN-46116 and discard.
9 Repeat these procedures for the remaining valves.

Figure 6A1 – 374
10 Remove the cylinder head oil gallery expansion plugs (1).


Figure 6A1 – 375
11 Remove the cylinder head coolant threaded plugs (1).


Figure 6A1 – 376

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ISUZU KB P190 2007