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Engine Mechanical – V6 Page 6A1–98
9 Remove the right-hand secondary timing chain
tensioner bolts (1) and remove the tensioner (2).
NOTE
Take care when removing the tensioner bolts.
The tensioner plunger is subjected to spring
tension and may spring apart during tensioner
removal.
Figure 6A1 – 106
10 Remove the tensioner gasket (1) from the tensioner (2) and discard the gasket.
11 Inspect the tensioner mounting surface on the right- hand cylinder head for burrs or any defects that would
affect the sealing of a new tensioner gasket.
Figure 6A1 – 107
12 Remove the right-hand secondary timing chain shoe bolt (1).
Figure 6A1 – 108
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ISUZU KB P190 2007
Page 2578 of 6020
Engine Mechanical – V6 Page 6A1–99
13 Remove the right-hand secondary timing chain shoe
(1).
Figure 6A1 – 109
14 Remove the two right-hand secondary timing chain guide bolts (1) and remove the guide (2).
Figure 6A1 – 110
15 Remove the right-hand secondary timing chain (1) from the camshaft position actuators (2) and the
camshaft intermediate driveshaft sprocket (3).
Figure 6A1 – 111
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Page 2579 of 6020
Engine Mechanical – V6 Page 6A1–100
Primary Timing Chain
1 Remove the right-hand secondary timing chain, refer to Right-hand Secondary Timing Chain in this Section.
2 Remove the two primary timing chain tensioner bolts (1), and remove the tensioner (2).
NOTE
Take care when removing the tensioner bolts.
The tensioner plunger is subjected to spring
tension and may spring apart during tensioner
removal.
Figure 6A1 – 112
3 Remove the gasket (1) from the tensioner (2) and discard the gasket.
4 Inspect the primary timing chain tensioner mounting surface on the engine block for burrs or any defects
that would affect the sealing of a new tensioner
gasket.
Figure 6A1 – 113
5 Remove the two primary timing chain upper guide bolts (1) and remove the guide (2).
Figure 6A1 – 114
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ISUZU KB P190 2007
Page 2580 of 6020
Engine Mechanical – V6 Page 6A1–101
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 requires replacement, the oil
pump assembly (2) must be replaced.
Figure 6A1 – 115
6 Remove the primary timing chain (1). NOTE
For ease of removal, remove the chain from the
crankshaft sprocket, before attempting to
remove from the camshaft intermediate
driveshaft sprockets.
Figure 6A1 – 116
7 If required, remove the right-hand camshaft intermediate driveshaft sprocket bolt (1) and remove
the sprocket (2).
Figure 6A1 – 117
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ISUZU KB P190 2007
Page 2581 of 6020
Engine Mechanical – V6 Page 6A1–102
8 If required, remove the crankshaft sprocket (1) from
the crankshaft (2).
Figure 6A1 – 118
Left-hand Secondary Timing Chain
1 Remove the primary timing chain, refer to Primary Timing Chain in this Section.
2 Remove the two left-hand secondary timing chain tensioner bolts (1) and remove the tensioner (2).
NOTE
Take care when removing the tensioner bolts.
The tensioner plunger is subjected to spring
tension and may spring apart during tensioner
removal.
Figure 6A1 – 119
3 Remove the gasket (1) from the tensioner (2) and discard the gasket.
4 Inspect the tensioner mounting surface on the left- hand cylinder head for burrs or any defects that would
affect the sealing of a new tensioner gasket.
Figure 6A1 – 120
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ISUZU KB P190 2007
Page 2582 of 6020
Engine Mechanical – V6 Page 6A1–103
5 Remove the left-hand secondary timing chain shoe
bolt (1).
Figure 6A1 – 121
6 Remove the left-hand secondary timing chain shoe (1).
Figure 6A1 – 122
7 Remove the left-hand secondary timing chain guide bolt (1), two places, and remove the guide (2).
Figure 6A1 – 123
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ISUZU KB P190 2007
Page 2583 of 6020
Engine Mechanical – V6 Page 6A1–104
8 Remove the left-hand secondary timing chain (1) from
the camshaft position actuators (2) and the camshaft
intermediate driveshaft sprocket.
Figure 6A1 – 124
9 If required, remove the left-hand camshaft intermediate driveshaft sprocket bolt (1) and remove
the sprocket (2).
Figure 6A1 – 125
10 Remove Tool No. EN 46105-2 (1) from the left-hand cylinder head camshafts (2).
Figure 6A1 – 126
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ISUZU KB P190 2007
Page 2584 of 6020
Engine Mechanical – V6 Page 6A1–105
11 Remove Tool No. EN 46105-1 (1) from the right-hand
cylinder head camshafts (2).
Figure 6A1 – 127
Clean
1 Clean all the following components with a suitable solvent:
• crankshaft sprocket,
• primary timing chain,
• primary timing chain guide,
• primary timing chain tensioner,
• secondary timing chains,
• secondary timing chain shoes,
• secondary timing chain guides,
• secondary timing chain tensioners, and
• bolts.
Safety glasses must be worn when using
compressed air.
2 Dry all the components with compressed air.
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ISUZU KB P190 2007