Isuzu KB P190. Manual — part 734

Engine Mechanical – V6

Page 6A1–159

Page 6A1–159

10

The crankshaft sprocket timing mark (1) will align with
a bright plated timing chain link (2).

Figure 6A1 – 226

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 – 227

Engine Mechanical – V6

Page 6A1–160

Page 6A1–160

N O T E

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 – 228

12

Ensure the primary timing chain upper guide is
selected and orientated correctly.

Figure 6A1 – 229

13

Install the primary timing 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 specification. . ...20.0 – 26.0 Nm

Figure 6A1 – 230

Engine Mechanical – V6

Page 6A1–161

Page 6A1–161

15

Ensure that the primary timing chain tensioner is
being installed.

Figure 6A1 – 231

16

Reset the primary timing chain tensioner.

N O T E

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 – 232

17

Install the tensioner shoe assembly (1) into the
primary timing chain tensioner body (2).

Figure 6A1 – 233

Engine Mechanical – V6

Page 6A1–162

Page 6A1–162

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.

18

Compress the shoe assembly into the body (2) and
lock the primary timing chain tensioner by inserting
Tool No. EN 46112 into the access hole in the side of
the body.

19

Slowly release pressure on the primary timing chain
tensioner. The primary timing chain tensioner should
remain compressed.

Figure 6A1 – 234

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 timing chain tensioner mounting
surface on the engine block does not have any burrs
or defects that would affect the sealing of the new
gasket.

Figure 6A1 – 235

23

Place the primary timing chain tensioner (2) into
position and loosely install the bolts (1) to the engine
block.

Figure 6A1 – 236