Mazda CX-5 Service & Repair Manual: Connecting Rod, Connecting Rod Bearing
Purpose, Function
Connecting rod
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The connecting rod transmits the reciprocating movement of the piston to the crankshaft by engaging the piston pin and crank pin.
Connecting rod bearing
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The connecting rod bearing forms an oil film on the outer surface of the crank pin to prevent wear due to sliding.
Construction
Connecting rod
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The connecting rod is installed between the piston pin and crank pin.
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High-strength, forged carbon steel has been adopted for weight reduction.
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A cracking method*1 for breaking off and separating the connecting rod from the connecting rod cap has been adopted for improved accuracy.
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Weight has been reduced by optimizing the shape from the I shaft to the large end.
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Reciprocating inertial weight, including the piston, has been reduced with the use of a full-float type for the connection with the piston and further tapering of the small end shape.
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With the adoption of the plastic region tightening*2 method for the connecting rod bolt, the stability of the axial force has been improved.
*2 Plastic region tightening is a method of controlling the tightening using the rotation angle of a bolt. By tightening to the region (plastic tightening region) in which bolt deformation does not become irreversible, variation in axial force is suppressed.
Connecting rod bearing
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The connecting rod bearing is installed on the outer surface of the crank pin.
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The upper and lower connecting rod bearing are made of aluminum alloy.
Piston Assembly
...
Piston, Piston Ring, Piston Pin
Purpose, Function
Piston
The piston in the cylinder of the cylinder block moves reciprocally by the
pressure received when the air-fuel mixture combusts.
Piston ring
The piston ...
Other materials:
Differential Oil Replacement
1. Place the vehicle on level ground.
2. Remove the filler plug.
3. Remove the drain plug and drain the differential oil into a container.
4. Install a new washer and the drain plug, and tighten.
Tightening torque
40—53 N·m {4.1—5.4 kgf·m, 30—39 ft·lbf}
5. Add the ...
Air Bag System [Two Step Deployment Control System]
Outline
The air bag system is a device that supplements the passenger restraint function
of the seat belts. The air bag system will not have the designed effect if the
seat belts are not worn properly.
The air bag system is composed of the following parts:
...
Awd Solenoid Inspection
1. Disconnect the negative battery cable.
2. Disconnect the AWD solenoid connector.
3. Measure resistance between AWD solenoid connector terminals A and B.
If the resistance is not within the specification, replace the coupling unit.
AWD solenoid resistance
2.2—2.7 oh ...
