Isuzu KB P190. Manual - part 650

Engine Mechanical – V6 

Page 6A1–121 

 

34 

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

 

Figure 6A1 – 167 

Primary Timing chain Components 

1 

If previously removed, install the left-hand secondary 
timing chain components, refer to Left-hand 
Secondary Timing Chain Components in this Section.

 

2 

Ensure the right-hand camshaft intermediate 
driveshaft sprocket (2) is selected and orientated 
correctly. 

CAUTION

 

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

Figure 6A1 – 168 

3 

Install the right-hand camshaft intermediate driveshaft 
sprocket (2). 

4 

Install the driveshaft sprocket bolt (1) and tighten to 
the correct torque specification. 

 

 

Camshaft intermediate driveshaft sprocket 
attaching bolt torque specification...........58.0 – 72.0 Nm 

 

Figure 6A1 – 169 

Engine Mechanical – V6 

Page 6A1–122 

 

5 

Ensure that the crankshaft sprocket timing mark (1) is 
aligned with the indexing mark (2) on the oil pump 
housing. 

 

Figure 6A1 – 170 

6 

Install the primary timing chain (1). 

 

Figure 6A1 – 171 

7 

Wrap the primary timing chain around the large 
sprockets of each camshaft intermediate driveshaft 
sprocket and the crankshaft sprocket aligning the 
bright plated chain links as follows: 

 

Figure 6A1 – 172 

Engine Mechanical – V6 

Page 6A1–123 

 

8 

The left-hand camshaft intermediate driveshaft 
sprocket timing mark (1) will align with a bright plated 
primary timing chain link (2). 

 

Figure 6A1 – 173 

9 

The right-hand camshaft intermediate driveshaft 
sprocket timing mark (1) will align with a bright plated 
primary timing chain link (2). 

 

Figure 6A1 – 174 

10 

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

 

Figure 6A1 – 175 

Engine Mechanical – V6 

Page 6A1–124 

 

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 – 176 

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 – 177 

12 

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

 

Figure 6A1 – 178