Isuzu KB P190. Manual - part 742

Engine Mechanical – V6 

Page 6A1–191 

 

Page 6A1–191 

13 

Remove the bolt (1) attaching left-hand intake 
camshaft sprocket (2) and remove the sprocket. 

 

Figure 6A1 – 309 

Clean 

1 

Clean the exterior of each camshaft sprocket with solvent. 

 

Safety glasses must be worn when using 
compressed air. 

2 

Dry the timing components with compressed air. 

Inspect 

1 

Inspect the front of each sprocket for the following: 
• 

Sprocket damage (1), and  

• 

Sprocket bolt seating inner hub damage (2). 

 

 

Figure 6A1 – 310 

Engine Mechanical – V6 

Page 6A1–192 

 

Page 6A1–192 

2 

Inspect the back of each sprocket for the following: 
• 

Sprocket damage (1), 

• 

Camshaft locating pin damage (2) and, 

• 

Camshaft seating/sealing inner hub flange 
damage (3), 

 

 

N O T E  

These checks apply to both the inlet and 
exhaust camshaft sprockets. 

 

Figure 6A1 – 311 

Reinstall 

Reinstallation of the camshaft sprockets is the reverse of the removal procedure, noting the following:  

1 

Align the sprockets and timing chain with the marks made during removal. 

2 

Tighten the camshaft sprocket bolts to the correct torque specification. 

Camshaft sprocket attaching 
bolt torque specification ..........................49.0 – 67.0 Nm 

3 

Remove the timing chain retention tools. 

Engine Mechanical – V6 

Page 6A1–193 

 

Page 6A1–193 

3.19  Camshaft Sprocket – MY06 Update 

CAUTION

 

Setting the camshaft timing is required 
whenever the camshaft drive system is 
disturbed to ensure the relationship between 
any chain and sprocket is not lost. Even when 
only one sprocket is involved, multiple 
crankshaft rotations will not produce 
conditions where correct timing can be 
confirmed. 
If required, follow the Left-hand Secondary 
Camshaft Chain Components reinstallation 
procedure to reset the camshaft timing.

 

Remove 

Right-hand Side 

1 

Remove the right-hand camshaft cover, refer to 

3.12  Camshaft Cover

. 

2 

Remove the camshaft position sensors, refer to 

Section 6C1-3 Engine Management – Service Operations

. 

3 

Remove the camshaft position actuator solenoids, refer to 

Section 6C1-3 Engine Management – V6 – Service 

Operations

. 

4 

Remove the crankshaft balancer assembly, refer to 

3.13  Crankshaft Balancer Assembly

. 

5 

Install the crankshaft rotation socket Tool No.  
EN-46111 onto the crankshaft. 

6 

Rotate the crankshaft until the camshafts are in a 
neutral low tension position. The camshaft flats will be 
parallel with the camshaft cover rail (1). 

 

Figure 6A1 – 312 

Engine Mechanical – V6 

Page 6A1–194 

 

Page 6A1–194 

7 

Install Tool No. EN-46105–1 (1) onto the rear of the 
right-hand cylinder head (3) camshafts (2).  

 

Figure 6A1 – 313 

N O T E  

Use an open-end spanner (1) at the camshaft 
hex (2) to prevent camshaft/engine rotation. 

N O T E  

Do not remove the camshaft sprocket bolt (3) at 
this time. 

8 

Loosen the camshaft sprocket bolt (3). 

N O T E  

If you have already removed the camshaft 
timing chain proceed to Step 12 

 

Figure 6A1 – 314 

N O T E  

The front engine cover is removed in the 
following graphic for illustration purposes and is 
not required to be removed to perform this 
procedure. 

9 

Loosen the timing chain retention Tool No. EN 48313 
so that the legs are retracted. 

10 

Insert the Tool No. EN 48313 between the camshaft 
actuators, rearward of the timing chain until the top 
line that is scribed into the body of the tool (1) is 
adjacent to the top surface of the cylinder head (2). 
This is the approximate installed position. 

 

Figure 6A1 – 315