Page 2633 of 6020

Engine Mechanical – V6 Page 6A1–154
3 Position the camshafts (1) on the cylinder head and
assemble the camshaft sprockets to the camshafts.
NOTE
Install the camshaft sprocket bolts but do not
tighten at this stage.
Figure 6A1 – 256
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 right-hand cylinder head camshaft
cover rail.
5 Ensure the marks on the right-hand exhaust camshaft position actuator and timing chain, made prior to the
disassemble operation are aligned.
6 Ensure the marks on the right-hand intake camshaft position actuator and timing chain, made prior to the
disassemble operation are aligned.
Figure 6A1 – 257
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 front of the engine.
8 Apply a liberal amount of engine oil to the camshaft bearing caps.
Figure 6A1 – 258
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Page 2634 of 6020

Engine Mechanical – V6 Page 6A1–155
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 the centre of the cylinder
head.
11 Hand start all the camshaft bearing cap bolts (3).
Figure 6A1 – 259
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 camshaft 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
Figure 6A1 – 260
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 – 261
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Page 2635 of 6020
Engine Mechanical – V6 Page 6A1–156
2 Apply a liberal amount of engine oil to the camshaft
journals and the left-hand cylinder head camshaft
carriers.
Figure 6A1 – 262
3 Position the camshafts (1) on the cylinder head and assemble the camshaft sprockets to the camshafts.
NOTE
Install the camshaft sprocket bolts but do not
tighten at this stage.
Figure 6A1 – 263
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 – 264
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Page 2636 of 6020

Engine Mechanical – V6 Page 6A1–157
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 front of the engine.
8 Apply a liberal amount of engine oil to the camshaft bearing caps.
Figure 6A1 – 265
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 the centre of the cylinder
head.
11 Hand start all the camshaft bearing cap bolts (3).
Figure 6A1 – 266
12 Tighten the camshaft bearing cap bolts to the correct torque specification and in the sequence shown.
Camshaft bearing cap
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 camshaft bearing cap bolts 1, 2, 3 and 4 to the correct torque specification.
Camshaft bearing cap
bolt torque specification:
Stage 2:.....................................................8.0 – 12.0 Nm
Figure 6A1 – 267
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Page 2637 of 6020
Engine Mechanical – V6 Page 6A1–158
3.20 Rocker Arm
Remove
1 Remove the camshafts from the appropriate cylinder head, refer to 3.19 Camshaft.
2 Remove the rocker arm (1) from the cylinder head (2).
NOTE
Record the rocker arm positions during removal.
CAUTION
If the rocker arms are being reused, they
must be reinstalled in their original location.
Figure 6A1 – 268
Clean and Inspect
1 Inspect the rocker arm roller (1) for the following:
• flat spots,
• excessive scoring and pitting, and
• ensure the roller spins freely
2 Inspect the rocker arm valve tip area (2).
3 Inspect the rocker arm stationary hydraulic lash adjuster (SHLA) pivot area (3).
4 Replace the rocker arm as required.
Figure 6A1 – 269
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Page 2638 of 6020
Engine Mechanical – V6 Page 6A1–159
Reinstall
1 Apply a liberal amount of commercially available
camshaft / lifter prelube or equivalent to the pivot
pocket (1), roller (2) and valve slot (3) areas of the
camshaft followers.
Figure 6A1 – 270
2 Place the rocker arm in position on the valve tip and stationary hydraulic lash adjuster (SHLA). The
rounded head end of the arm seats on the SHLA
while the flat end seats on the valve tip.
CAUTION
• The rocker arm (1) must be positioned
squarely on the valve tip so the full width
of the roller will completely contact the
camshaft lobe.
• If the rocker arms are being reused, they
must be reinstalled in their original
location.
3 Clean the camshaft journals and carriers with a clean, lint-free cloth.
4 Reinstall the camshafts, refer to 3.19 Camshaft.
Figure 6A1 – 271
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Page 2639 of 6020
Engine Mechanical – V6 Page 6A1–160
3.21 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 – 272
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 – 273
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ISUZU KB P190 2007
Page 2640 of 6020

Engine Mechanical – V6 Page 6A1–161
Reinstall
1 Fill the stationary hydraulic lash adjuster (SHLA) with
clean engine oil. Take precautions to prevent
scratching the pivot sphere 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 – 274
3.22 Cylinder Head Assembly
Remove
Right-hand Side (Bank 1) Cylinder Head
1 Remove the heater hoses and heater pipe assembly, refer to 6B1 Engine Cooling – V6.
2 Remove the intake manifold assembly, refer to 3.10 Intake Manifold Assembly – Complete.
3 Remove the exhaust manifold, refer to 3.11 Exhaust Manifold Assembly.
4 Remove engine harness ground terminal attaching bolts from the cylinder head, refer to 8A Electrical Body and Chassis.
5 Remove the right-hand side secondary timing chain, refer to 3.16 Timing Chains, Tensioners, Shoes and Guides.
6 Remove the camshaft sprockets, refer to 3.18 Camshaft Sprocket.
7 Remove the cylinder head attaching bolt (1), eight places.
8 Remove the cylinder head.
NOTE
There is no bolt fitted to the hole in the rear of
the right-hand-hand cylinder head.
Figure 6A1 – 275
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ISUZU KB P190 2007