Isuzu KB P190. Manual - part 724

Engine Mechanical – V6 

Page 6A1–119 

 

Page 6A1–119 

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 requires replacement, the oil 
pump assembly (2) must be replaced. 

 

 

Figure 6A1 – 117 

6 

Remove the primary timing chain (1). 

N O T E  

For ease of removal, remove the chain from the 
crankshaft sprocket, before attempting to 
remove from the camshaft intermediate 
sprockets. 

 

 

Figure 6A1 – 118 

7 

If required, remove the right-hand camshaft 
intermediate sprocket bolt (1) and remove the 
sprocket (2). 

 

Figure 6A1 – 119 

Engine Mechanical – V6 

Page 6A1–120 

 

Page 6A1–120 

8 

If required, remove the crankshaft sprocket (1) from 
the crankshaft (2). 

 

Figure 6A1 – 120 

Left-hand Secondary Timing Chain  

1 

Remove the primary timing chain, refer to Primary Timing Chain in this Section. 

2 

Remove the two left-hand secondary timing chain 
tensioner bolts (1) and remove the tensioner (2). 

 

 

N O T E  

Take care when removing the tensioner bolts. 
The tensioner plunger is subjected to spring 
tension and may spring apart during tensioner 
removal. 

 

 

Figure 6A1 – 121 

3 

Remove the gasket (1) from the tensioner (2) and 
discard the gasket. 

4 

Inspect the tensioner mounting surface on the left-
hand cylinder head for burrs or any defects that would 
affect the sealing of a new tensioner gasket. 

 

 

Figure 6A1 – 122 

Engine Mechanical – V6 

Page 6A1–121 

 

Page 6A1–121 

5 

Remove the left-hand secondary timing chain shoe 
bolt (1). 

 

 

Figure 6A1 – 123 

6 

Remove the left-hand secondary timing chain 
shoe (1). 

 

 

Figure 6A1 – 124 

7 

Remove the left-hand secondary timing chain guide 
bolt (1), two places, and remove the guide (2). 

Figure 6A1 – 125 

Engine Mechanical – V6 

Page 6A1–122 

 

Page 6A1–122 

8 

Remove the left-hand secondary timing chain (1) from 
the camshaft position actuators (2) and the camshaft 
intermediate sprocket. 

 

Figure 6A1 – 126 

9 

If required, remove the left-hand camshaft 
intermediate sprocket bolt (1) and remove the 
sprocket (2). 

 

Figure 6A1 – 127 

10 

Remove Tool No. EN 46105–2 (1) from the left-hand 
cylinder head camshafts (2). 

 

Figure 6A1 – 128