Isuzu KB P190. Manual - part 759

Engine Mechanical – V6 

Page 6A1–259 

 

Page 6A1–259 

4.3 Flexplate 

Assembly 

Remove 

1 

Remove the transmission, refer to 

Section 7C4 Automatic Transmission – 4L60E – On-vehicle Servicing

. 

2 

Remove the starter motor, refer to 

Section 6D1-2 Starting System – V6

. 

3 

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

 

Figure 6A1 – 452 

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 – 453 

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. 

Engine Mechanical – V6 

Page 6A1–260 

 

Page 6A1–260 

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 – 454 

Reinstall 

N O T E  

The bolt holes are unevenly spaced to enable 
flexplate fitment in the one position only. 

1 

Place the flexplate assembly (2) in position on the 
crankshaft. 

2 

Install new flexplate attaching bolts (1) and hand 
tighten. 

 

Figure 6A1 – 455 

Engine Mechanical – V6 

Page 6A1–261 

 

Page 6A1–261 

3 

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

4 

Tighten the eight flexplate attaching bolts to the 
correct torque specification. 

 

„  Flexplate attaching bolt  
torque specification: 
 Stage 

1 ..............26.0 – 34.0 Nm 

 Stage 

2 .................................45° 

 

5 

Remove the flexplate holding tool. 

6 

Install the starter motor, refer to 

Section 6D1-2 

Starting System – V6

. 

7 

Install the transmission, refer to 

Section 7E4 

Automatic Transmission – 4L60E – On-vehicle 
Servicing

. 

 

Figure 6A1 – 456 

Engine Mechanical – V6 

Page 6A1–262 

 

Page 6A1–262 

4.4 

Crankshaft Rear Seal and Plate 
Assembly 

Remove 

1 

Remove the engine assembly, refer to 

4.1  Engine 

. 

2 

Remove the flexplate assembly, refer to 

4.3  Flexplate Assembly

. 

3 

Remove the engine oil pan assembly, refer to 

4.2  Oil Pan and Oil Pump Suction Pipe Assembly

. 

4 

Remove the five bolts (1) attaching the crankshaft 
rear seal housing to the rear of the cylinder block (2). 

 

Figure 6A1 – 457 

5 

Shear the RTV sealant using the prise points located 
at the edge of the crankshaft rear oil seal housing,  

 

Figure 6A1 – 458