Isuzu KB P190. Manual - part 670

Engine Mechanical – V6 

Page 6A1–201 

 

Inspect 

1 

Inspect the exterior of the oil pan for the following 
conditions: 
• 

Damage to the drain plug or drain plug hole, 

• 

Damage to the transmission mounting bosses,

• 

Damage to the oil level sensor threads, and 

• 

Dents or damage to the exterior. 

2 

Inspect the interior of the oil pan for the following 
conditions: 
• 

Gouges or damage to the oil pan sealing 
surfaces, 

• 

Damage to the crankshaft oil deflector, 

• 

Damage to the bolt holes, 

• 

Damage to the oil suction tube mounting 
bosses, and 

• 

Damage to the crankshaft oil deflector mounting 
bosses. 

Figure 6A1 – 355 

3 

Inspect the oil pan deflector for damage. 

4 

Repair or replace the oil pan deflector and/or oil pan 
as required. 

 

Figure 6A1 – 356 

5 

Inspect the following: 

6 

The mounting face (1) of the oil pump suction pipe for 
possible leakage paths. 

7 

The oil pump pipe support bracket (2) for cracks or 
damage. 

8 

The oil pump suction pipe tube (3) for cracks, 
imperfections and/or damage. 

9 

The oil pump screen (4) for blockage, foreign 
material, tears, cracks and/or damage. 

10 

Repair or replace the oil pan and/or oil pan 
components as required. 

 

Figure 6A1 – 357 

Reassemble 

Reassembly of the oil pan and oil suction pipe assembly is the reverse of the disassembly procedure, noting the 
following: 

Engine Mechanical – V6 

Page 6A1–202 

 

1 

Install a new oil suction tube seal onto the oil suction 
tube. 

2 

Install the oil suction pipe and tighten the attaching 
bolts to the correct torque specification. 

Oil suction pipe attaching  
bolt torque specification .....................................10.0 Nm 

3 

Install the crankshaft oil deflector into the oil pan 
assembly and tighten the attaching bolts to the 
correct torque specification. 

Crankshaft oil deflector 
attaching bolt torque specification......................10.0 Nm 

4 

Install the oil level sensor into the oil pan assembly 
and tighten to the correct torque specification. 

Oil level sensor torque specification...................20.0 Nm 

Figure 6A1 – 358 

5 

Install the oil pan drain plug into the oil pan assembly and tighten to the correct torque specification. 

Oil pan drain plug  
torque specification ............................................25.0 Nm 

Reinstall 

1 

Install the guide pins, Tool No. EN-46109 (1) into the 
oil pan rail bolt hole on each side of the engine block.

Figure 6A1 – 359 

2 

Place a 3mm bead (1) of RTV sealant on the cylinder 
block pan rail and crankshaft rear oil seal housing to 
oil pan mating surfaces. 

3 

Position the oil pan onto the cylinder block. 

4 

Remove the guide pins, Tool No. EN-46109 from the 
cylinder block. 

Figure 6A1 – 360 

Engine Mechanical – V6 

Page 6A1–203 

 

5 

Loosely install the oil pan bolts. 

6 

Tighten the oil pan attaching bolts to the correct 
torque specification and in the sequence shown. 

 

 

Oil pan to cylinder block attaching 
bolt (1 – 11) torque specification .............20.0 – 26.0 Nm 

Oil pan to crankshaft rear oil 
seal housing attaching bolt (12 – 13) 
torque specification ...................................8.0 – 12.0 Nm 

 

Figure 6A1 – 361 

4.3 Flexplate 

Assembly 

Remove 

1 

Remove the transmission, refer to 7C4 Automatic Transmission – 4L60E – On-vehicle Servicing. 

2 

Remove the starter motor, refer to 6D1-2 Starting System – V6. 

3 

Install the flexplate holding tool, Tool No. EN-46106 
(1) into the starter motor mounting location. 

Figure 6A1 – 362 

Engine Mechanical – V6 

Page 6A1–204 

 

4 

Loosen the eight flexplate attaching bolts (1). 

5 

Remove the flexplate holding tool. 

6 

Using a suitable permanent marker or paint pen, mark 
the flexplate assembly (2) to crankshaft relationship.

7 

Remove the eight flexplate attaching bolts and 
discard. 

8 

Remove the flexplate assembly. 

Figure 6A1 – 363 

Clean 

1 

Clean the flexplate assembly in a suitable solvent. 

 

Safety glasses must be worn when using 
compressed air. 

2 

Dry the flexplate assembly with compressed air. 

Inspect 

1 

Inspect the flexplate assembly for the following 
conditions: 
• 

Stress cracks around the flexplate to torque 
converter mounting bolt hole locations (1). 

• 

Stress cracks around the flexplate to crankshaft 
mounting bolt hole locations (2 and 4). 

• 

Cracks at welded areas that retain the ring gear 
onto the flexplate (3). 

• 

Damaged or missing ring gear teeth (5). 

2 

Replace the flexplate assembly as required. 

N O T E  

The flexplate ring gear is not serviced 
separately and cannot be repaired. If found to 
be faulty or damaged, the flexplate assembly 
must be replaced. 

CAUTION

 

Do not repair the welded areas that retain 
the ring gear to the flexplate. The flexplate 
must be replaced. 

Figure 6A1 – 364