2007 ISUZU KB P190 Workshop Repair Manual

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Page 2713 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–234

8 Loosely install new short / inner side main cap
bolts (4).
CAUTION
• The short / inner side main cap bolts
originally have a sealant on the flange

Page 2714 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–235

2 Remove the right-hand front oil pan rail oil gallery
expansion plug (1).

Figure 6A1 – 437
3 Remove the cylinder block-to-oil pan alignment dowels

Page 2715 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–236

5 Remove the right-hand side M14 coolant drain
threaded plug (1).

Figure 6A1 – 440
6 Remove the rear M14 oil gallery threaded plug (1).

Figure 6

Page 2716 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–237

8 Remove the left-hand side M20 oil gallery threaded
plug (1).

Figure 6A1 – 443
CAUTION
Do not force coolant expansion plugs
downwards during remo

Page 2717 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–238

11 Remove the front oil gallery expansion plug (1).

Figure 6A1 – 446
12 Remove the cylinder block-to-cylinder head alignment dowels (1).

Figure

Page 2718 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–239

Inspect
Visual Inspection
NOTE
The following procedure assumes the engine has
been disassembled and cleaned, as described
above.
1 Inspect the crank

Engine Mechanical – V6 Page 6A1–239

Inspect
Visual Inspection
NOTE
The following procedure assumes the engine has
been disassembled and cleaned, as described
above.
1 Inspect the crankshaft bearing journals for damage or spun bearings. The crankshaft bearing journals are not repairable and if damage is found, the cylinder block assembly must be replaced.
2 Inspect the primary camshaft chain tensioner mounting surface on the engine block for burrs or any defects that would affect the sealing of the new primary camshaft chain tensioner gasket.
3 Inspect all sealing and mating surfaces for damage, repair or replace the cylinder block assembly if required.
4 Inspect all threaded and through holes for damage or excessive debris.
5 Inspect all bolts for damage, if damaged replace with new bolts only.
6 Inspect the cylinder walls for cracks or damage. The cylinder sleeves are not serviced separately, if the cylinders are damaged the cylinder block assembly must be replaced.
7 Inspect the engine block for cracks. Do not repair any cracks. If cracks are found, the cylinder block assembly must be replaced. Repair any damaged threaded holes, refer to 4.9 Thread Repair Specifications.
Measuring Cylinder Bore Diameter
1 Measure the cylinder bore diameter 37 mm from the deck face (1) using a commercially available bore
gauge or Tool No. J-8087 (2).
2 Record the results and compare with the dimensions listed in the specifications, refer to 5 Specifications.

NOTE
If the cylinder diameter exceeds the
specifications, the cylinder block may be
oversized to 0.25 mm. Only one size of
oversized pistons and rings are available for
service. If the cylinder bore diameter exceeds
specification by more than 0.25 mm, the
cylinder block must be replaced.
Figure 6A1 – 448
Measuring Cylinder Bore Taper
1 Measure the cylinder bore along the thrust surfaces, perpendicular to the crankshaft centreline, at 10 mm below the deck surface and record the measurement.
2 Measure the cylinder bore along the thrust surfaces, perpendicular to the crankshaft centreline, at 100 mm below the deck surface and record the measurement.
3 Calculate the difference between the two measurements. The result will be the cylinder taper.
4 Compare the results with the dimensions listed in the specifications, refer to 5 Specifications.
NOTE
If the cylinder diameter exceeds the
specifications, the cylinder block may be
oversized to 0.25 mm. Only one size of oversized
pistons and rings are available for service. If the
cylinder bore diameter exceeds specification by
more than 0.25 mm, the cylinder block must be
replaced.
Measuring Cylinder Bore Out-of-Round
1 Measure both the thrust and non-thrust cylinder diameter at 10 mm below the deck. Record your measurements.

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ISUZU KB P190 2007

Page 2719 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–240

2 Calculate the difference between the two measurements. The result will indicate out-of-round at the upper end of
the cylinder.
3 Measure both the thrus

Page 2720 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–241

2 Install a new front oil gallery expansion plug (1).
Figure 6A1 – 451
3 Install the cylinder block-to-transmission alignment dowels (1).
Figure 6A1

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