Isuzu KB P190. Manual — part 737

Engine Mechanical – V6

Page 6A1–171

Page 6A1–171

25

Verify the proper placement of the right-hand
secondary timing chain tensioner gasket tab (1).

26

Tighten the right-hand secondary timing chain
tensioner bolts (2) to the correct torque specification.

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

Figure 6A1 – 260

27

Release the right-hand timing chain tensioner (1) by
pulling out Tool No. EN 46112 (2) and unlocking the
tensioner plunger.

Figure 6A1 – 261

28

Verify all primary and secondary timing chain timing
mark alignments (1 to 18).

29

Remove Tool No. EN 46105 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 – 262

Right-hand Secondary Timing Chain Components – MY06 Update

1

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

Engine Mechanical – V6

Page 6A1–172

Page 6A1–172

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 – 263

CAUTION

In order to install Tool No. EN 46105 onto the
camshafts, rotate the camshafts. There
should be no need to rotate the camshaft
more than 45 degrees.

Figure 6A1 – 264

3

Install Tool No. EN 46105–1 (1) onto the rear of the
right-hand cylinder head camshafts (2).

Figure 6A1 – 265

Engine Mechanical – V6

Page 6A1–173

Page 6A1–173

4

Install Tool No. EN 46105–2 (1) onto the rear of the
left-hand cylinder head camshafts (2).

Figure 6A1 – 266

5

Install the right-hand secondary timing chain (1) onto
the camshaft sprockets (2) and the right hand
camshaft intermediate sprocket (3) aligning the chain
in the following manner:

Figure 6A1 – 267

6

Place the secondary timing chain around the right-
hand camshaft intermediate outer sprocket, aligning
the bright plated timing chain link (1) with the
alignment access hole (2) in the inner sprocket.

Figure 6A1 – 268

Engine Mechanical – V6

Page 6A1–174

Page 6A1–174

7

Wrap the secondary timing chain around both right-
hand camshaft drive sprockets.

Figure 6A1 – 269

CAUTION

Ensure that when aligning the right-hand
secondary timing chain to the right-hand
camshaft sprockets, that the triangular
timing marks (1) on the sprocket are used,
NOT the circular mark.

8

Align the bright plated timing chain link (2) with the
exhaust sprocket alignment triangle mark or circular
mark.

Figure 6A1 – 270

9

Align the bright plated timing chain link (1) with the
intake sprocket alignment triangle mark (2).

Figure 6A1 – 271