Mazda CX-5 Service & Repair Manual: Crankshaft, Main Bearing
Purpose, Function
-
The crankshaft converts the reciprocating movement of the piston to a rotational movement via the connecting rod.
-
The main bearing forms an oil film on the outer surface of the crankshaft journal to prevent wear due to sliding.
Construction
Crankshaft
-
The crankshaft is installed to the inside (crankcase) of the cylinder block.
-
The crankshaft has a key groove to match timing to the crankshaft pulley.
-
The crankshaft has the following parts shown in the figure.
-
The optimized shaft diameter ratio of the crankshaft journal and crank pin has reduced sliding resistance while maintaining rigidity.
-
The steel crankshaft has five bearings and eight counterweights for improved accuracy in the rotational balance.
-
The crankshaft journal and crank pin have been induction hardened* to bear high loads.
-
The crankshaft has an oil passage for supplying engine oil to the crankshaft journal and crank pin.
Main bearing
-
The main bearing is installed to the outer surface of the crankshaft journal.
-
The upper main bearing and lower main bearing are made of aluminum alloy.
-
The upper main bearing has an oil groove and oil hole.
-
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:
Automatic Transaxle Shift Mechanism [Fw6 A EL, Fw6 Ax EL]
Outline
A sport AT-type shift mechanism has been adopted for all models.
An electric shift-lock system has been adopted to prevent driver mis-operation.
A manual shift-lock release system has been adopted to ensure emergency bypass
if shifting operations cannot be performed ...
Front Door Hinge Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Front bumper.
b. Front combination light.
c. Front bumper slider.
d. Front over fender.
e. Front fender panel.
f. Front door.
3. Remove in the order shown in the figure.
1
Bolt
...
Oil Shower Pipe
Outline
Mechanical resistance loss has been reduced through structural changes to
achieve optimum fuel economy. An oil shower pipe has been adopted as a part
of this structural change.
Purpose, Function
The oil shower pipe injects engine oil to lubricate the contact points ...
