2007 ISUZU KB P190 Workshop Repair Manual

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Page 3049 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–272
Page 6A1–272
Connecting Rod Cleaning Procedure
1 Clean the connecting rods in solvent.

Safety glasses must be worn when using
compressed air.
2 Dr

Page 3050 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–273
Page 6A1–273
2 Using an inside micrometer, measure the connecting
rod piston pin bore (1).
3 Subtract the piston pin di ameter from the piston pin
bor

Page 3051 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–274
Page 6A1–274
Reassemble
Piston and Piston Pin
CAUTION
The arrow located on top of the piston must
point toward the front of the engine.
NOTE
The con

Page 3052 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–275
Page 6A1–275
Piston Ring
NOTE
The ends of the expander must be facing
toward the top of the piston.
1 Correctly orient the oil control ring expander

Page 3053 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–276
Page 6A1–276
7 Once the rings are installed, set the ring gaps for the
oil control, second and top ring as follows. Use the
piston location arrow for r

Page 3054 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–277
Page 6A1–277
Reinstall
Piston Connecting Rod and Connecting Rod Bearing Installation
CAUTION
The piston is directional and must be
installed in the en

Page 3055 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 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 Bear

Page 3056 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 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

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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