Isuzu KB P190. Manual — part 651

Engine Mechanical – V6

Page 6A1–125

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 – 179

15

Ensure that the primary timing chain tensioner is
being installed.

Figure 6A1 – 180

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 – 181

Engine Mechanical – V6

Page 6A1–126

17

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

Figure 6A1 – 182

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.

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 timing chain tensioner should
remain compressed.

Figure 6A1 – 183

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 – 184

Engine Mechanical – V6

Page 6A1–127

23

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

Figure 6A1 – 185

24

Verify the proper placement of the primary timing
chain tensioner gasket tab (1).

25

Tighten the primary timing chain tensioner bolts (2) to
the correct torque specification.

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

Figure 6A1 – 186

26

Release the primary timing chain tensioner (1) by
pulling out Tool No. EN 46112 (2) and unlocking the
tensioner shaft.

Figure 6A1 – 187

Engine Mechanical – V6

Page 6A1–128

27

Verify the primary and left-hand secondary timing
chain timing mark alignments (1 to 12).

Figure 6A1 – 188

28

Remove Tool No. EN 46105 from the left-hand and right-hand cylinder head camshafts.

Right-hand Secondary Timing Chain Components

1

Install the primary timing chain components, refer to Primary Timing chain Components in this Section.

2

Using Tool No. EN46111 (1), rotate the crankshaft in
a clockwise direction until the crankshaft sprocket
timing mark (2) is aligned with the indexing mark (3)
on the oil pump housing.

Figure 6A1 – 189