NOTICE
To minimize vibration, the connecting rods should have the same weight mark.
Big End Cap [A] Connecting Rod [B] Weight Mark, Alphabet [C] Diameter Mark [D] (“” or No Mark)
NOTICE
If the connecting rods, big end bearing inserts, or crankshaft are replaced with new ones, select the bearing insert and check clearance with a plastigage (press gauge) before assembling engine to be sure the correct bearing inserts are installed.
NOTICE
Wrong application of oil and grease could cause bearing damage.
When installing the inserts [A], be careful not to damage the insert surface with the edge of the connecting rod [B] or the cap [C]. One way to install inserts is as follows.
Installation [D] to Cap Installation [E] to Connecting Rod Push [F] Spare Dowel Pin [G] Connecting Rod Bolts [H]
The connecting rod big end is bolted using the “plastic region fastening method”.
This method precisely achieves the needed clamping force without exceeding it unnecessarily, allowing the use of thinner, lighter bolts further decreasing connecting rod weight.
There are two types of the plastic region fastening. One is a bolt length measurement method and other is a rotation angle method. Observe one of the following two, but the bolt length measurement method is preferable because this is a more reliable way to tighten the big end nuts.
NOTICE
The connecting rod bolts are designed to stretch when tightened. Never reuse the connecting rod bolts. See the table below for correct bolt and nut usage.
NOTICE
Be careful not to overtighten the nuts. The bolts must be positioned on the seating surface correctly to prevent the bolt heads from hitting the crankcase.
(1) Bolt Length Measurement Method
WARNING Gasoline and low flash-point solvents can be flammable and/or explosive and cause severe burns. Clean the bolts, nuts, and connecting rods in a well-ventilated area, and take care that there are no sparks or flame anywhere near the working area; this includes any appliance with a pilot light. Do not use gasoline or a low flash-point solvent to clean them. |
NOTICE
Immediately dry the bolts and nuts with compressed air after cleaning. Clean and dry the bolts and nuts completely.
If the connecting rod assembly was replaced, use the bolts and nuts attached to the new connecting rod assembly.
Threads [A] of Nuts and Bolts Seating Surfaces [B] of Nuts and Connecting Rods
Connecting Rod [A] Dent here with a punch [B].
Nuts [C] Fit micrometer pins into dents [D].
Bolt Length after tightening – Bolt Length before tightening = Bolt Stretch
Connecting Rod Bolt Stretch
Usable Range: 0.24 0.34 mm (0.0094
0.0134 in.)
If the stretch is more than the usable range, the bolt has stretched too much. An overelongated bolt may break in use.
(2) Rotation Angle Method
If you do not have a point micrometer, you may tighten the nuts using the “Rotation Angle Method”.
WARNING Gasoline and low flash-point solvents can be flammable and/or explosive and cause severe burns. Clean the bolts, nuts, and connecting rods in a well-ventilated area, and take care that there are no sparks or flame anywhere near the working area; this includes any appliance with a pilot light. Do not use gasoline or a low flash-point solvent to clean them. |
NOTICE
Immediately dry the bolts and nuts with compressed air after cleaning. Clean and dry the bolts and nuts completely.
If the connecting rod assembly was replaced, use the bolts and nuts attached to the new connecting rod assembly.
Threads [A] of Nuts and Bolts Seating Surfaces [B] of Nuts and Connecting Rods
Mark [A] the connecting rod big end caps and nuts so that
nuts can be turned 150° [B] properly.
Water Temperature Sensor Resistance Inspection
Refer to the Water Temperature Sensor Inspection in the
Electrical System chapter.
If the reading is within the standard, but the problem still
exists, replace the ECU (see ECU Removal/Installation in
the Fuel System (DFI) chapter).
Water Temperature Sensor Circuit
1. ECU
2. Water T ...
Intake Air Pressure Sensor #2 Output Voltage Inspection
Measure the output voltage at the intake air pressure sensor
#2 in the same way as input voltage inspection, note
the following.
Disconnect the intake air pressure sensor #2 connector
and connect the measuring adapter [A] between these
connectors.
[B] Main Harness
[C] Intake Air Pressu ...
Wheel/Tire Damage Inspection
Remove any imbedded stones [A] or other foreign particles
[B] from tread.
Visually inspect the tire for cracks and cuts, and replace
the tire if necessary. Swelling or high spots indicate internal
damage, requiring tire replacement.
Visually inspect the wheel for cracks, cuts and dents ...