Mazda CX-5 Service & Repair Manual: Electric Variable Valve Timing Actuator Inspection
WARNING:
-
A hot engine can cause severe burns. Turn off the engine and wait until it is cool before servicing.
CAUTION:
-
Do not disassemble the electric variable valve timing actuator because it is a precision unit.
1. Disconnect the negative battery cable..
2. Remove the plug hole plate..
3. Remove the electric variable valve timing motor/driver..
4. Rotate the eccentric shaft of the electric variable valve timing actuator by hand and verify that it rotates smoothly.
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If it does not rotate smoothly, replace the electric variable valve timing actuator..
NOTE:
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Hook a finger onto the joint groove of the eccentric shaft to rotate the shaft easily.
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The eccentric shaft stops rotating at the maximum retard position when it is rotated counterclockwise as viewed from the front, and at the maximum advance position when rotated clockwise.
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The eccentric shaft rotates 15.8 turns from the maximum retard position to the maximum advance position.
5. Install in the reverse order of removal.
Compression Inspection
WARNING:
Hot engines and oil can cause severe burns. Be careful not to burn yourself
during removal/installation of each component.
Fuel vapor is hazardous. It can very easily ignit ...
Electric Variable Valve Timing Actuator
Purpose, Function
The electric variable valve timing actuator changes the phases of the intake
camshaft relative to the crankshaft. As a result, the open/close period of the
intake valve ...
Other materials:
Hydraulic Variable Valve Timing Control
Outline
Changes the exhaust valve timing according to engine operation conditions
to improve engine output, fuel economy, and emission performance.
Based on each input signal, the PCM determines the optimum exhaust valve
timing according to the engine operation conditions. The P ...
Steering Angle Sensor
Purpose, Function
The steering angle sensor outputs the steering angle and steering angle reference
point during the period which the EPS control module performs initial learning
(approx. 1 min period).
Construction
The steering angle sensor is installed to the clock spring ...
Hydraulic Lash Adjuster, Rocker Arm
Purpose, Function
HLA
The HLA maintains the valve clearance at a constant 0 mm and maintenance-free
valve clearance is realized.
Rocker arm
With the adoption of the needle roller bearing built into the rocker arm,
the contact to the cam employs rolling contact to reduce sl ...
