Isuzu KB P190. Manual - part 655

Engine Mechanical – V6 

Page 6A1–141 

 

Reassemble 

CAUTION

 

As there are no serviceable components 
within the oil pump, a disassembled oil pump 
must be replaced.  

Reinstall 

1 

Align the oil pump gerotor with the crankshaft flats 
and fit the oil pump assembly to the engine block. 

2 

Align the pump body (2) with the mounting holes in 
the cylinder block. 

3 

Install the oil pump bolt (1), three places, and tighten 
to the correct torque specification. 

4 

Install the primary timing chain, refer to 3.16
 

Timing Chains, Tensioners, Shoes and Guides. 

 

 

Oil pump attaching bolt torque 
specification ............................................20.0 – 26.0 Nm 

 

Figure 6A1 – 223 

3.18 Camshaft 

Sprocket 

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 6C1-3 Engine Management – Service Operations. 

3 

Remove the camshaft position actuator solenoids, refer to 6C1-3 Engine Management – V6 – Service Operations. 

4 

Remove the crankshaft balancer assembly, refer to 3.13  Crankshaft Balancer Assembly. 

Engine Mechanical – V6 

Page 6A1–142 

 

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 – 224 

7 

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

Figure 6A1 – 225 

8 

Loosen the camshaft sprocket bolt. 

 

 

N O T E  

•  Use an open-end spanner (1) at the 

camshaft hex (2) to prevent camshaft/engine 
rotation. 

•  Do not remove the camshaft sprocket bolt at 

this time. 

•  If you have already removed the camshaft 

timing chain proceed to step 12 

 

 

Figure 6A1 – 226 

Engine Mechanical – V6 

Page 6A1–143 

 

9 

Install Tool No. EN-46108 (1 and 2) to retain the 
timing chain (3 and 4). 

10 

Firmly tighten the wing nuts of Tool No. EN-46108. 

11 

Mark the timing chain and the respective location on 
both camshaft sprocket. 

 

N O T E  

Ensure the camshaft timing chain and the 
camshaft sprocket are marked for correct 
reassembly. 

CAUTION

 

Ensure the tips of Tool No. 

 

EN-46108 are fully engaged into the timing 
chain and the wing nuts are tight and the 
timing chain is taught. 

 

Figure 6A1 – 227 

12 

Remove the bolt (1) attaching the right-hand exhaust 
camshaft sprocket (2) and remove the sprocket. 

 

Figure 6A1 – 228 

13 

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

Figure 6A1 – 229 

Engine Mechanical – V6 

Page 6A1–144 

 

Left-hand Side 

1 

Remove the left-hand camshaft cover, refer to 3.12 

Camshaft Cover. 

2 

Remove the camshaft position sensors, refer to 6C1-3 Engine Management – V6 – Service Operations. 

3 

Remove the camshaft position actuator solenoids, refer to 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 – 230 

7 

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

 

Figure 6A1 – 231