Isuzu KB P190. Service manual - part 740

Engine Mechanical – V6 

Page 6A1–183 

 

Page 6A1–183 

Inspect 

1 

Inspect the oil pump housing for damage. 

 

Figure 6A1 – 291 

2 

Inspect the oil pump cover for damage. 

 

 

Figure 6A1 – 292 

3 

Inspect the inner drive gear for damage. If inner 
surface damage is found, ensure the crankshaft is 
also inspected. 

 

 

Figure 6A1 – 293 

Engine Mechanical – V6 

Page 6A1–184 

 

Page 6A1–184 

4 

Inspect the outer driven gear for damage. 

 

 

Figure 6A1 – 294 

5 

Inspect the oil pump relief valve components for 
debris or damage. 

 

 

Figure 6A1 – 295 

6 

Inspect the primary camshaft chain lower guide for 
damage. If replacement of the primary camshaft chain 
lower guide is required, replace the entire oil pump 
assembly as the primary camshaft chain lower guide 
is not serviceable separately. 

7 

If debris or damage is present within the oil pump, 
further inspection of all of the engine components is 
required. 

 

 

Figure 6A1 – 296 

Engine Mechanical – V6 

Page 6A1–185 

 

Page 6A1–185 

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 – 297 

Engine Mechanical – V6 

Page 6A1–186 

 

Page 6A1–186 

3.18  Camshaft Sprocket – Excluding 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 – 298