Mazda CX-5 Service & Repair Manual: Crankshaft, Main Bearing
Purpose, Function
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The crankshaft converts the reciprocating movement of the piston to a rotational movement via the connecting rod.
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The main bearing forms an oil film on the outer surface of the crankshaft journal to prevent wear due to sliding.
Construction
Crankshaft
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The crankshaft is installed to the inside (crankcase) of the cylinder block.
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The crankshaft has a key groove to match timing to the crankshaft pulley.
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The crankshaft has the following parts shown in the figure.
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The optimized shaft diameter ratio of the crankshaft journal and crank pin has reduced sliding resistance while maintaining rigidity.
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The steel crankshaft has five bearings and eight counterweights for improved accuracy in the rotational balance.
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The crankshaft journal and crank pin have been induction hardened* to bear high loads.
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The crankshaft has an oil passage for supplying engine oil to the crankshaft journal and crank pin.
Main bearing
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The main bearing is installed to the outer surface of the crankshaft journal.
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The upper main bearing and lower main bearing are made of aluminum alloy.
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The upper main bearing has an oil groove and oil hole.
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Thrust force is suppressed by the thrust bearings on both sides of the No.3 journal.
Crankshaft Position (CKP) Sensor
Purpose/Function
Detects the crankshaft speed as basic information for mainly determining
the fuel injection timing and ignition timing.
Detects the crankshaft speed and inputs it to ...
Motor Mounts
...
Other materials:
Winter Driving
Carry emergency gear, including tire chains, window scraper, flares, a small
shovel, jumper cables, and a small bag of sand or salt.
Ask an Authorized Mazda Dealer to perform the following precautions: l Have the
proper ratio of antifreeze in the radiator.
• Inspect the battery and its cable ...
Clutch Fluid Inspection [C66 M R]
NOTE:
A common reserve tank is used for the clutch system and brake system.
1. Verify that the clutch fluid is between the MIN mark and the MAX mark.
Verify that there is no clutch fluid leakage then add clutch fluid to the
level between the MIN mark and the MAX mark..
...
Front Suspension
Outline
A strut type front suspension has been adopted.
The connection area of the front crossmember and body is a 6-point rigid
mount type.
The cross-section on the center member of the front crossmember has been
expanded and the longitudinal offset of the ...
