engine ISUZU KB P190 2007 Workshop Repair Manual

Engine Mechanical – V6 Page 6A1–178
Page 6A1–178
21 Install a new right-hand secondary timing chain
tensioner gasket (1) to the tensioner (2).
22 Install the right-hand secondary timing chain tensioner bolts (3) through the tensioner and gasket.
23 Ensure the right-hand secondary timing chain tensioner mounting surfac e on the right-hand cylinder
head does not have any burrs or defects that would
affect the sealing of the new tensioner gasket.


Figure 6A1 – 281
24 Place the right-hand secondar y timing chain tensioner
(2) into position and loosely install the bolts (1) to the
engine block.


Figure 6A1 – 282
25 Verify the proper plac ement of the right-hand
secondary timing chain tensioner gasket tab (1).
26 Tighten the right-hand secondary timing chain tensioner bolts (2) to the co rrect torque specification.




Secondary timing chain tensioner
attaching bolt torque spec ification ........... 20.0 – 26.0 Nm


Figure 6A1 – 283

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Engine Mechanical – V6 Page 6A1–179
Page 6A1–179
27 Release the right-hand timing chain tensioner (1) by
pulling out Tool No. EN 46112 (2) and unlocking the
tensioner plunger.


Figure 6A1 – 284
28 Verify all primary and secondary timing chain timing mark alignments (1 to 18).
29 Remove Tool No. EN 46105–1 and EN 46105-2 from the left and right-hand cylinder head camshafts.
30 Reinstall the spark plugs. Refer to Section 6C1-3
Engine Management – V6 – Service Operations.
31 Reinstall the engine front cover assembly, refer to 3.15 Front Cover Assembly .

Figure 6A1 – 285

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Engine Mechanical – V6 Page 6A1–180
Page 6A1–180
3.17 Oil Pump Assembly
Remove
NOTE
Do not remove the left-hand bank idler sprocket.
1 Remove the primary timing chai n and crankshaft sprocket, refer to 3.16 Timing Chains, Tensioners, Shoes and
Guides .
2 Remove the three bolts (1) attaching the oil pump (2).
3 Remove the oil pump assembly.

Figure 6A1 – 286

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–181
Page 6A1–181
Disassemble
CAUTION
There are no serviceable components within
the oil pump. Disassemble the pump only to
diagnose an oil related concern. A
disassembled oil pump must not be reused: it
must be replaced.
1 Remove the two bolts (1) attaching the primary timing chain lower guide (2) and remove the guide.

CAUTION
The primary timing chain lower guide is not
serviced separately and is part of the oil
pump assembly. If it is removed from the
pump assembly, the guide and the pump
must be replaced.

Figure 6A1 – 287
2 Remove the seven bolts (2) attaching the oil pump cover to the oil pump housing (1) and remove the
cover from the housing.


Figure 6A1 – 288

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–182
Page 6A1–182
3 Remove the inner gerotor ring (1).
4 Remove the outer gerotor ring (2).


Figure 6A1 – 289
5 Remove the clip (1), retaining the oil relief valve cap (2).
6 Remove the cap, spring (3) and plunger (4) from the oil pump housing.


Figure 6A1 – 290
Clean
1 Clean the oil pump components with non-corrosive solvent.

Safety glasses must be worn when using
compressed air.
2 Dry the oil pump components with compressed air.

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Engine Mechanical – V6 Page 6A1–183
Page 6A1–183
Inspect
1 Inspect the oil pump housing for damage.

Figure 6A1 – 291
2 Inspect the oil pump cover for damage.


Figure 6A1 – 292
3 Inspect the inner drive gear for damage. If inner surface damage is found, ens ure the crankshaft is
also inspected.


Figure 6A1 – 293

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–184
Page 6A1–184
4 Inspect the outer driven gear for damage.


Figure 6A1 – 294
5 Inspect the oil pump relief valve components for debris or damage.


Figure 6A1 – 295
6 Inspect the primary camshaft chain lower guide for damage. If replacement of t he primary camshaft chain
lower guide is required, r eplace the entire oil pump
assembly as the primary camshaft chain lower guide
is not serviceable separately.
7 If debris or damage is pres ent within the oil pump,
further inspection of all of the engine components is
required.


Figure 6A1 – 296

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Engine Mechanical – V6 Page 6A1–185
Page 6A1–185
Reassemble
CAUTION
As there are no serviceable components
within the oil pump, a disassembled oil pump
must be replaced.
Reinstall
1 Align the oil pump gerotor with the crankshaft flats
and fit the oil pump assembly to the engine block.
2 Align the pump body (2) with the mounting holes in the cylinder block.
3 Install the oil pump bolt (1), three places, and tighten to the correct torque specification.
4 Install the primary timing chain, refer to 3.16 Timing
Chains, Tensioners, Shoes and Guides .


Oil pump attaching bolt torque
specificat ion ............................................ 20.0 – 26.0 Nm


Figure 6A1 – 297

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–186
Page 6A1–186
3.18 Camshaft Sprocket – Excluding MY06
Update
CAUTION
Setting the camshaft timing is required
whenever the camshaft drive system is
disturbed to ensure the relationship between
any chain and sprocket is not lost. Even when
only one sprocket is involved, multiple
crankshaft rotations will not produce
conditions where correct timing can be
confirmed.
If required, follow the Left-hand Secondary
Camshaft Chain Components reinstallation
procedure to reset the camshaft timing.
Remove
Right-hand Side
1 Remove the right-hand ca mshaft cover, refer to 3.12 Camshaft Cover.
2 Remove the camshaft position sensors, refer to Section 6C1-3 Engine Management – Service Operations.
3 Remove the camshaft position actuator solenoids, refer to Section 6C1-3 Engine Management – V6 – Service
Operations .
4 Remove the crankshaft bal ancer assembly, refer to 3.13 Crankshaft Balancer Assembly .
5 Install the crankshaft rotation socket Tool No. EN-46111 onto the crankshaft.
6 Rotate the crankshaft until the camshafts are in a neutral low tension position. The camshaft flats will be
parallel with the camshaft cover rail (1).

Figure 6A1 – 298

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–187
Page 6A1–187
7 Install Tool No. EN-46105 – 1 (1) onto the rear of the
right-hand cylinder head (3) camshafts (2).

Figure 6A1 – 299
NOTE
Use an open-end spanner (1) at the camshaft
hex (2) to prevent camshaft/engine rotation.
NOTE
Do not remove the cams haft sprocket bolt (3) at
this time.
8 Loosen the camshaft sprocket bolt (3). NOTE
If you have already removed the camshaft
timing chain proceed to step 12

Figure 6A1 – 300

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