Page 2977 of 6020
Engine Mechanical – V6 Page 6A1–200
Page 6A1–200
2 Inspect the back of each sprocket for the following:
• Sprocket damage (1),
• Camshaft locating pin damage (2) and,
• Camshaft seating/sealing inner hub flange
damage (3),
NOTE
These checks apply to both the inlet and
exhaust camshaft sprockets.
Figure 6A1 – 327
Reinstall
Reinstallation of the camshaft sprocke ts is the reverse of the removal procedure, noting the following:
1 Align the sprockets and timing chain with the marks made during removal.
2 Tighten the camshaft sprocket bolts to the correct torque specification.
Camshaft sprocket attaching
bolt torque specificat ion .......................... 49.0 – 67.0 Nm
3 Remove the timing chain retention tools.
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Page 2978 of 6020
Engine Mechanical – V6 Page 6A1–201
Page 6A1–201
3.20 Camshaft
Remove
Right-hand Side
1 Remove the right-hand cylinder head camshaft sprockets, refer to 3.18 Camshaft Sprocket.
NOTE
Tool No. EN-46105–1 was installed as part of the
right-hand cylinder head camshaft sprocket
removal procedure.
2 Remove the Tool No. EN-46105–1 (1) from the right- hand cylinder head camshafts (2).
NOTE
Tool No. EN-46105 was installed as part of the
right-hand cylinder head camshaft sprocket
removal procedure.
Figure 6A1 – 328
3 Observe the markings (1) on the bearing caps. Each bearing cap is marked to identify its location. The
markings have the following meanings:
• The raised feature must always be oriented
toward the centre of the cylinder head.
• An I indicates t he intake camshaft.
• An E indicates the exhaust camshaft.
• The number indicates the journal position from
the front of the engine.
Figure 6A1 – 329
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Page 2979 of 6020
Engine Mechanical – V6 Page 6A1–202
Page 6A1–202
4 Remove the camshaft bearing cap bolts (1) and
caps (2).
Figure 6A1 – 330
5 Remove the camshafts (1).
Figure 6A1 – 331
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Page 2980 of 6020
Engine Mechanical – V6 Page 6A1–203
Page 6A1–203
Left-hand Side
1 Remove the left-hand cylinder head camshaft sprockets, refer to 3.18 Camshaft Sprocket .
NOTE
Tool No. EN-46105–1 was installed as part of the
left-hand cylinder head camshaft sprocket
removal procedure.
2 Remove Tool No. EN-46105–1 (1) from the left-hand camshafts.
NOTE
Tool No. EN-46105 was installed as part of the
left-hand cylinder head camshaft position
actuator removal procedure.
Figure 6A1 – 332
3 Observe the markings (1) on the bearing caps. Each bearing cap is marked in order to identify its location.
The markings have the following meanings:
• The raised feature must always be oriented
toward the centre of the cylinder head.
• An I indicates t he intake camshaft.
• An E indicates the exhaust camshaft.
• The number indicates the journal position from
the front of the engine.
Figure 6A1 – 333
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Page 2981 of 6020
Engine Mechanical – V6 Page 6A1–204
Page 6A1–204
4 Remove the camshaft bearing cap bolts (1) and
caps (2).
Figure 6A1 – 334
5 Remove the camshafts (1).
Figure 6A1 – 335
Clean
1 Clean the camshaft in solvent.
Safety glasses must be worn when using
compressed air.
2 Dry the camshaft with compressed air.
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Page 2982 of 6020

Engine Mechanical – V6 Page 6A1–205
Page 6A1–205
Inspect
Camshaft Visual Inspection
1 Inspect the threaded hole (2) for damage.
2 Inspect the camshaft spro cket locating notch (3) for
damage or wear.
3 Inspect the camshaft sealing grooves (4) for damage.
4 Inspect the camshaft thrust surface (5) for damage.
5 Inspect the camshaft lobes (6) and journals (7) for the following conditions:
• Excessive scoring or pitting
• Discoloration from overheating
• Deformation from excessive wear, especially
the camshaft lobes
6 If any of the above conditions exist on the camshaft, replace the camshaft.
Figure 6A1 – 336
Camshaft Measurement
1 With the camshaft (1) in a suitable fixture (2), measure the camshaft for wear.
2 For camshaft measurement, refer to the following specifications, 5 Specifications .
NOTE
If the camshaft measures outside the specified
range, replace the camshaft.
CAUTION
No machining of the camshaft is allowed.
Figure 6A1 – 337
3 Measure the camshaft (2) journals for diameter and out-of-round using an outsi de micrometer (1).
Figure 6A1 – 338
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Page 2983 of 6020
Engine Mechanical – V6 Page 6A1–206
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4 Measure the camshaft runout using a dial
indicator (1).
Figure 6A1 – 339
5 Measure the camshaft thrust width for wear using a depth micrometer (A).
Figure 6A1 – 340
6 Measure the camshaft thrust wall surface for runout using a dial indicator (1).
Figure 6A1 – 341
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Page 2984 of 6020
Engine Mechanical – V6 Page 6A1–207
Page 6A1–207
7 Measure the camshaft lobes for wear using a dial
indicator (1).
Figure 6A1 – 342
8 Place the dial indicator tip on the base circle (1) of the camshaft lobe.
9 Set the dial indicator at zero.
10 Rotate the camshaft until the indicator tip is at the highest point (2) on the lobe. This reading is the lift of
the camshaft lobe.
Figure 6A1 – 343
Reinstall
Right-hand Side
1 Select the correct camshaft for the particular installation location. ID markings are 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 – 344
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ISUZU KB P190 2007