engine ISUZU KB P190 2007 Workshop Repair Manual

Engine Mechanical – V6 Page 6A1–148
Page 6A1–148
31 Verify the proper placement of the left-hand
secondary timing chain tensioner gasket tab (1).
32 Tighten the left-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 – 195
33 Release the left-hand secondary timing chain tensioner (1) by pulling out Tools No. EN 46112 (2)
and unlocking the tensioner shaft.

Figure 6A1 – 196
34 Verify the left-hand secondary timing chain timing mark alignments (1 to 6).


Figure 6A1 – 197


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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–149
Page 6A1–149
Primary Timing Chain Components – Excluding MY06 Update
1 If previously removed, install the left-hand secondary
timing chain components, refer to Left-hand
Secondary Timing Chain Components in this Section.
CAUTION
The right-hand camshaft intermediate
sprocket (2) is marked with the letters RB
and ‘FRONT’, and the left-hand sprocket (1)
is marked with the le tters LB and 'FRONT'
Ensure the correct sprocket is used and the
FRONT text is facing forwards when
installed.
2 Ensure the right-hand camshaft intermediate sprocket (2) is selected and orientated correctly.


Figure 6A1 – 198
3 Install the right-hand camshaft intermediate sprocket (2).
4 Install the sprocket bolt (1) and tighten to the correct torque specification.


Camshaft intermediate sprocket
attaching bolt torque spec ification ........... 58.0 – 72.0 Nm


Figure 6A1 – 199
5 Ensure that the crankshaft sprocket timing mark (1) is aligned with the indexing mark (2) on the oil pump
housing.


Figure 6A1 – 200

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–150
Page 6A1–150
6 Install the primary timing chain (1).


Figure 6A1 – 201
7 Wrap the primary timi ng chain around the large
sprockets of each camsha ft intermediate sprocket
and the crankshaft sprocket aligning the bright plated
chain links as follows:


Figure 6A1 – 202
8 The left-hand camshaft intermediate sprocket timing mark (1) will align with a bright plated primary timing
chain link (2).


Figure 6A1 – 203

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–151
Page 6A1–151
9 The right-hand camshaft intermediate sprocket timing
mark (1) will align with a bright plated primary timing
chain link (2).


Figure 6A1 – 204
10 The crankshaft sprocket timing mark (1) will align with a bright plated timing chain link (2).


Figure 6A1 – 205
11 Ensure all the timing marks (1, 2 and 3) are properly aligned with the bright plated timing chain links (4, 5
and 6).


Figure 6A1 – 206

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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

Engine Mechanical – V6 Page 6A1–153
Page 6A1–153
15 Ensure that the primary timing chain tensioner is
being installed.

Figure 6A1 – 210
16 Reset the primary timing chain tensioner.




NOTE
To reset the tensioner, use a suitably sized flat
blade screwdriver (1) or Tool No. J 45027 (4) to
wind the plunger in a clockwise direction, into
the tensioner shaft (2).


Figure 6A1 – 211
17 Install the tensioner shoe assembly (1) into the primary timing chain tensioner body (2).


Figure 6A1 – 212

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–154
Page 6A1–154
18 Compress the shoe assembly into the body (2) and
lock the primary timing chai n tensioner by inserting
Tool No. EN 46112 into the access hole in the side of
the body.
CAUTION
If Tool No. EN 46112 (1) is not inserted into
the tensioner body, the plunger will remain
in the locked position and no tension will be
placed on the timing chain.
19 Slowly release pressure on the primary timing chain tensioner. The primary timi ng chain tensioner should
remain compressed.



Figure 6A1 – 213
20 Install a new primary timing chain tensioner gasket (1) to the tensioner (2).
21 Install the primary timing chain tensioner bolts (3)
through tensioner and gasket.
22 Ensure the primary timi ng chain tensioner mounting
surface on the engine block does not have any burrs
or defects that would affe ct the sealing of the new
gasket.


Figure 6A1 – 214
23 Place the primary timing chain tensioner (2) into position and loosely install the bolts (1) to the engine
block.


Figure 6A1 – 215

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–155
Page 6A1–155
24 Verify the proper placement of the primary timing
chain tensioner gasket tab (1).
25 Tighten the primary timing c hain tensioner bolts (2) to
the correct torque specification.



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


Figure 6A1 – 216
26 Release the primary timing chain tensioner (1) by pulling out Tool No. EN 46112 (2) and unlocking the
tensioner shaft.


Figure 6A1 – 217

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–156
Page 6A1–156
27 Verify the primary and left-hand secondary timing
chain timing mark alignments (1 to 12).

Figure 6A1 – 218
28 Remove Tool No. EN 46105 from the left-hand and right-hand cylinder head camshafts.
Primary Timing Chain Components – MY06 Update
1 If previously removed, install the left-hand secondary timing chain components, refer to Left-hand
Secondary Timing Chain Components in this Section.
CAUTION
The right-hand camshaft intermediate
sprocket (2) is marked with the letters RB
and ‘FRONT’, and the left-hand sprocket (1)
is marked with the le tters LB and 'FRONT'
Ensure the correct sprocket is used and the
FRONT text is facing forwards when
installed.
2 Ensure the right-hand camshaft intermediate sprocket (2) is selected and orientated correctly.


Figure 6A1 – 219

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–157
Page 6A1–157
3 Install the right-hand camshaft intermediate
sprocket (2).
4 Install the sprocket bolt (1) and tighten to the correct torque specification.


Camshaft intermediate sprocket
attaching bolt torque spec ification ........... 58.0 – 72.0 Nm


Figure 6A1 – 220
5 Ensure that the crankshaft sprocket timing mark (1) is aligned with the indexing mark (2) on the oil pump
housing.


Figure 6A1 – 221
6 Install the primary timing chain (1).


Figure 6A1 – 222

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ISUZU KB P190 2007