Isuzu KB P190. Manual - part 760

Engine Mechanical – V6 

Page 6A1–263 

 

Page 6A1–263 

6 

Remove the crankshaft rear oil seal housing (1) from 
the cylinder block (2). 

 

Figure 6A1 – 459 

Reinstall 

1 

Install the guide pins, Tool No. EN-46109 (1) into the 
two crankshaft rear oil seal housing bolt holes of the 
cylinder block (2). 

 

Figure 6A1 – 460 

2 

Apply a 3mm bead (1) of RTV sealant to the 
crankshaft rear oil seal housing. 

 

Figure 6A1 – 461 

Engine Mechanical – V6 

Page 6A1–264 

 

Page 6A1–264 

3 

Install the crankshaft rear oil seal housing (1) to the 
cylinder block (2). 

N O T E  

•  Do not allow any engine oil onto the cylinder 

block mating surface, where the crankshaft 
rear oil seal housing is to be installed. 

•  A seal-protector is provided with the new 

crankshaft rear seal and housing assembly. 
Do not remove the seal protector from the 
crankshaft rear oil seal housing until the 
crankshaft rear oil seal housing is fully in 
position. 

4 

Remove the guide pins from the cylinder block. 

 

 

 

Figure 6A1 – 462 

5 

Install the crankshaft rear oil seal housing attaching 
bolts (1) to the cylinder block (2) and tighten to the 
correct torque specification. 

 

 

Crankshaft rear oil seal housing 
attaching bolt torque specification.............8.0 – 12.0 Nm 

 

Figure 6A1 – 463 

Engine Mechanical – V6 

Page 6A1–265 

 

Page 6A1–265 

4.5 

Pistons, Pins, Rings, Connecting Rods 
and Big-end Bearings 

Remove 

1 

Remove the engine assembly, refer to 

4.1  Engine 

. 

2 

Remove both cylinder head assemblies, refer to 

3.22  Cylinder Head Assembly

. 

3 

Remove the oil pan assembly, refer to 

4.2  Oil Pan and Oil Pump Suction Pipe Assembly

. 

4 

Mark the top of the piston being removed to identify its specific bore. 

5 

Install Tool No. EN-46111 (1) onto the crankshaft (2). 

6 

Rotate the crankshaft until the piston being removed 
is at the bottom of its stroke; bottom dead centre 
(BDC). 

 

 

Figure 6A1 – 464 

CAUTION

 

If the connecting rod bearings have been 
used in a running engine, they must be 
replaced with new connecting rod bearings 
for reassembly. 

7 

Before removing the connecting rods, check the connecting rod side clearance using the following procedure: 

a 

Tap the connecting rod to one end of the crankshaft journal with a dead blow or wooden hammer. 

b 

Using feeler gauges, measure the clearance between the crankshaft counterweight and the connecting rod. 

c 

The connecting rod side clearance should not exceed specifications, refer to 

5  Specifications

. 

d 

If the endplay exceeds the specified limits, measure the width of the crankpin end of the connecting rod, refer 
to 

5  Specifications

. 

e 

If the connecting rod width is significantly smaller than specified and severe wear is present on the side of the 
connecting rod, replace the connecting rod. 

f 

If the connecting rod width is within specification and excessive scoring is present on the crankshaft journals, 
replace the crankshaft. 

CAUTION

 

Do not use a stamp, punch or any other 
method that may distort or stress the 
connecting rod and cap. Extensive engine 
damage may result from a connecting rod that 
is distorted or stressed. 

8 

Mark the cylinder number on the connecting rod and the connecting rod cap with a paint stick or permanent marker. 

Engine Mechanical – V6 

Page 6A1–266 

 

Page 6A1–266 

CAUTION

 

Powdered metal connecting rods have rod 
bolts which yield when tighten to the 
specified torque. If the bolts are loosened or 
removed they must be replaced. Rod bolts 
that are not replaced will not torque to the 
correct clamp load and can lead to serious 
engine damage. 

9 

Remove the connecting rod bolts (1), loosening 
progressively from side to side. 

 

CAUTION

 

The connecting rod caps must remain with 
the original connecting rod. 

10 

Remove the connecting rod cap (2). 

 

 

 

 

Figure 6A1 – 465 

11 

Install connecting rod guide pin set, Tool No.  
EN-46121 (1) to the connecting rod bolt holes. 

 

 

Figure 6A1 – 466