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 material 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 incorrectly 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 the 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 rod 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
N O T E
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 remaining piston/connecting rod assemblies.