Isuzu KB P190. Service manual — part 729

Engine Mechanical – V6

Page 6A1–139

Page 6A1–139

34

Verify the left-hand secondary timing chain timing
mark alignments (1 to 6).

Figure 6A1 – 170

Left-hand Secondary Timing Chain Components – MY06 Update

1

Install the crankshaft sprocket (1) onto the
crankshaft (2) by aligning the keyway to the key on
the crankshaft.

2

Slide the crankshaft sprocket on the crankshaft until
the crankshaft sprocket contacts the step in the
crankshaft.

Figure 6A1 – 171

N O T E

Ensure that the crankshaft sprocket is installed
with the timing mark (1) visible.

Figure 6A1 – 172

Engine Mechanical – V6

Page 6A1–140

Page 6A1–140

CAUTION

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

Figure 6A1 – 173

3

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

CAUTION

All camshafts must be locked in place before
installation of any timing chains.

4

Ensure that Tool No. EN 46105 is fully seated onto
the camshafts.

Figure 6A1 – 174

5

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 – 175

Engine Mechanical – V6

Page 6A1–141

Page 6A1–141

6

Install the left-hand secondary timing chain (1)
aligning the chain in the following manner:

Figure 6A1 – 176

7

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

8

Ensure there are two bright links located on top of
each of the camshaft sprockets.

Figure 6A1 – 177

Engine Mechanical – V6

Page 6A1–142

Page 6A1–142

CAUTION

When aligning the left-hand secondary timing
chain to the camshaft sprockets, ensure the
circular timing marks on the sprocket are
used, NOT the triangular mark.

9

Align the bright plated timing chain link (1) with the
left-hand exhaust camshaft position sprocket
alignment circle mark (2).

Figure 6A1 – 178

10

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

Figure 6A1 – 179

CAUTION

The left-hand camshaft intermediate
sprocket (1) is marked with the letters LB
and ‘FRONT’, and the right-hand sprocket (2)
is marked with the letters RB and 'FRONT'
Ensure the correct sprocket is used and the
'FRONT' text is facing forwards when
installed.

11

Ensure the left-hand camshaft intermediate sprocket
is selected and orientated correctly.

Figure 6A1 – 180