2007 ISUZU KB P190 torque

Engine Mechanical – V6 Page 6A1–278
Page 6A1–278
7 Remove connecting rod guide pin set, Tool No.
EN-46121 (1) from the connecting rod bolt holes.

Figure 6A1 – 496
Connecting Rod Bearing Clearance Measurement Procedure
NOTE
Before final assembly, check the clearance of the
new connecting rod bearings.
1 Place a length of fresh, room temperature plastic
gauging material all the way across the connecting
rod bearing journal.
2 Install the connecting rod bearing into the connecting
rod cap.
3 Install the connecting rod end cap (1) on its original
connecting rod and ensure t he bearing lock tangs are
aligned on the same side of the rod.

Figure 6A1 – 497
NOTE
Reuse the old connecting rod bolts only for
measuring the connecting rod bearing clearance.
4 Install the connecting rod cap bolts in to the connecting rod cap and tighten to the correct torque specification using
torque angle wrench, Tool No. EN-7115.
Connecting rod cap attaching
bolt torque specification:
Stage 1 .........................30.0 Nm
Stage 2 ........Loosen completely
Stage 3 .........................25.0 Nm
Stage 4 ..................110 degrees
5 Allow the assembly to sit for at least 2 minutes.
6 Remove the connecting rod cap bolts and discard.
7 Remove the connecting rod cap.

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Engine Mechanical – V6 Page 6A1–279
Page 6A1–279
8 Determine the connecting rod bearing clearance by
comparing the width of the flattened plastic
gauging (1) material at its widest point with the
graduation on the gauging mate rial container (2).
9 Compare the measurements with the specifications,
refer to 5 Specifications .
10 If the new bearings do not provide the correct crankshaft to connecting rod bearing clearance,
inspect the following:
11 Measure the crankshaft connecting rod journals for the correct specified size and ensure the correct new
bearings are being installed. If the crankshaft
connecting rod journals are in correctly sized, replace
or regrind the crankshaft. Crankshaft machining is
permitted and undersized bearings are available.
12 Measure the connecting rod bearing bore diameter to
ensure correct size. The connecting rod is not
machineable and the connecting rod must be
replaced if out of specification.
13 Clean the plastic gauging material from the connecting rod bearing journals using a soft lint-free
cloth.

Figure 6A1 – 498
Connecting Rod Final Assembly Procedure
1 Carefully guide the connecting rod away from the crankshaft connecting rod journal slightly to lubricate
the crankshaft connecting rod bearing journal.
2 Apply a liberal amount of clean engine oil to the crankshaft connecting rod bearing journal.
3 Guide the connecting rod to the crankshaft connecting rod journal.
4 Install the connecting rod end cap (1) on its original
connecting rod and ensure t he bearing lock tangs are
aligned on the same side of the rod.
CAUTION
• Do not lubricate the new connecting rod
bolts. The new bolts have a pre-applied
graphite lubricant. Applying lubricant to
the connecting rod bolts will effect the
clamp load when the connecting rod
bolts are tightened to the specified
torque. Incorrect clamp load can lead to
component failure and extensive engine
damage.
• Do not reuse the old connecting rod
bolts.

Figure 6A1 – 499
5 Install new connecting rod bolts into the connecting r od cap and tighten to the correct torque specification.
„ Connecting rod cap attaching bolt
torque specification:
Stage 1 .........................30.0 Nm
Stage 2 ........Loosen completely
Stage 3 .........................25.0 Nm
Stage 4 ..................110 degrees
NOTE
During and after installation, ensure each piston
is positioned correctly in the correct cylinder. The
locating arrow on the top of each piston must be
pointing toward the front of the engine.
6 Repeat these procedures for the rema ining piston/connecting rod assemblies.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–281
Page 6A1–281
4.6 Crankshaft and Main Bearings
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 Remove the piston and connecting rod assemblies, refer to 4.5 Pistons, Pins, Rings, Connecting Rods and Big-
end Bearings .
5 Remove the oil pump assembly, refer to 3.17 Oil Pump Assembly.
6 Remove the crankshaft rear oil seal and plate assembly, refer to 4.4 Crankshaft Rear Seal and Plate Assembly .
7 Remove the crankshaft position sensor, refer to Section 6C1-3 Engine Management – V6 – Service Operations.
Crankshaft End Play Measurement
1 Place a dial indicator at the end of the crankshaft nose.
2 Gently force the crankshaft towards the front and rear of the cylinder block with a lever while monitoring the
movement of the dial indicator.
3 The crankshaft endplay should not exceed specifications, refer to 5 Specifications.
4 If the specifications are ex ceeded, inspect the thrust bearing thrust outer diameter and the crankshaft thrust wall for
wear and/or excessive runout. Compare the va lues with the specifications, refer to 5 Specifications.
5 Replace the thrust bearing or crankshaft as required.
Remove
1 Remove the crankshaft bearing cap side bolts (3).
CAUTION
The crankshaft bearing cap outer bolts are
yield tightened during assembly and must
be replaced prior to reassembly. Crankshaft
bearing cap outer bolts that are not replaced
will not torque to the correct clamp load and
can lead to serious engine damage.
2 Remove the crankshaft bearing cap outer bolts (1).
3 Remove the crankshaft bearing cap inner bolts (2).

Figure 6A1 – 500

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Engine Mechanical – V6 Page 6A1–282
Page 6A1–282
4 Loosen the nuts (1) of the crankshaft main bearing
cap remover, Tool No. J-41818 (2) to separate the
chamfered collets. Install the collets into the inner bolt
holes of the front main bearing cap (3).
5 Tighten the remover nuts to the correct torque specification.

Crankshaft bearing cap remover nut.................11.0 Nm.

6 Install a slide hammer, Tool No. J-6125-1B (4) onto the crankshaft bearing cap remover and remove the
crankshaft bearing cap.
7 Repeat steps 9 to 14 for the remaining crankshaft bearing caps.

Figure 6A1 – 501
8 Remove the crankshaft (1) from the engine block (2), lifting evenly to avoid jamming against the main thrust
bearing.
9 Place the crankshaft in a secure place.

Figure 6A1 – 502
10 If required, remove the crankshaft sprocket drive pin (1) from the crankshaft (2),

Figure 6A1 – 503

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Engine Mechanical – V6 Page 6A1–289
Page 6A1–289
4 Install the new lower crankshaft bearings (2) into
position in the main bearing caps (1). The lower
crankshaft bearings are ident ified by no grooves or
holes. The bearings must fit flush with the crankshaft
bearing caps.


Figure 6A1 – 517
Crankshaft Main Bearing Clearance Measurement
1 Place a length of fresh, room temperature plastic
gauging material all the way across all the crankshaft
bearing journals.
2 Install the crankshaft main bearing caps.
3 Loosely install the original inner main cap bolts (1).
4 Loosely install the original outer main cap bolts (2).

Figure 6A1 – 518
5 Loosely install the original short/inner side main cap bolts.
6 Loosely install the original long/outer side main cap
bolts (3).
7 Gently tap the crankshaft main bearing caps with a soft-faced hammer to help seat the caps.
8 Tighten the main caps bolts to the correct torque specification, and in the following sequence.
Crankshaft main bearing cap inboard
attaching bolt torque specification:
Stage 1 .........................20.0 Nm
Stage 2................................. 80°
Crankshaft main bearing cap outboard
attaching bolt torque specification:
Stage 1 .........................15.0 Nm
Stage 2............................... 110°
Crankshaft main bearing cap side
attaching bolt torque specification:
Stage 1 .........................30.0 Nm
Stage 2................................. 60°

Figure 6A1 – 519

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Engine Mechanical – V6 Page 6A1–291
Page 6A1–291
Crankshaft Final Installation Procedure
1 If removed, install the crankshaft sprocket drive
pin (1). Lightly tap the pin in place with a small soft
face, bronze/plastic, hammer until it bottoms in the
hole.

Figure 6A1 – 522
CAUTION
Ensure the crankshaft position sensor has
been removed from the cylinder block prior
to loading the crankshaft, as damage to the
sensor may occur.
2 Apply a liberal amount of clean engine oil to the upper and lower bearing surfaces.
3 Gently lower the crankshaft (1) into position in the cylinder block (2).

Figure 6A1 – 523
4 Install the crankshaft main bearing caps.
5 Loosely install the original inner main cap bolts (1).
CAUTION
The outer crankshaft bearing cap bolts (2)
are yield tightened during assembly and
must be replaced prior to reassembly. Outer
crankshaft bearing cap bolts that are not
replaced will not torque to the correct clamp
load and can lead to serious engine damage.
6 Loosely install the new outer main bearing cap bolts (2).
7 Gently tap the crankshaft main bearing caps with a soft-faced hammer to help seat the caps.

Figure 6A1 – 524

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Engine Mechanical – V6 Page 6A1–292
Page 6A1–292
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 of
the bolt head. New bolts must be used. If
new bolts are not used, oil can leak from
the crankcase past the bolts.
• The long / outer side main cap bolts
originally have a sealant on the flange of
the bolt head. New bolts must be used. If
new bolts are not used, oil can leak from
the crankcase past the bolts.
9 Loosely install the new long / outer side main cap bolts (3).
10 Tighten the main caps bolts to the correct torque specification, and in the following sequence.
„ Crankshaft main bearing cap inboard
attaching bolt torque specification:
Stage 1 .........................20.0 Nm
Stage 2................................. 80°
„ Crankshaft main bearing cap outboard
attaching bolt torque specification:
Stage 1 .........................15.0 Nm
Stage 2............................... 110°
„ Crankshaft main bearing cap side
attaching bolt torque specification:
Stage 1 .........................30.0 Nm
Stage 2................................. 60°

Figure 6A1 – 525
11 Ensure the crankshaft turns without binding or noise.
12 Install the remaining components in the reverse order to removal, refer to the appropriate Section.

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Engine Mechanical – V6 Page 6A1–300
Page 6A1–300
4 Place RTV sealant on new coolant expansion plugs
(1) and install the new coolant expansion plugs.

Figure 6A1 – 543
5 Install the left-hand side M20 oil gallery threaded plug (1) and tighten to the correct torque specification.




Left-hand side M20 cylinder block
oil gallery threaded plug
torque specificatio n ................................. 27. 0 – 35.0 Nm

Figure 6A1 – 544
6 Install the left-hand side M14 coolant drain threaded
plug (1) and tighten to the co rrect torque specification.




Left-hand side M14 cylinder block
coolant drain threaded plug
torque specificatio n ................................. 27. 0 – 35.0 Nm

Figure 6A1 – 545

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