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 sliding resistance.
Construction
HLA
The HLA is installed to the cylinder head.
Rocker arm
The rocker arm is installed to the HLA and upper area of the valve.
The needle roller bearing is built into the rocker arm.
Operation
Before valve opening
1. The plunger presses up the rocker arm by the spring force of the plunger spring to maintain the valve clearance at 0 mm.
During valve opening
1. If the cam presses down the rocker arm, load is applied to the plunger and valve.
2. If load is applied to the plunger, the hydraulic pressure in the high pressure chamber (A chamber) increases and the check ball closes the hydraulic passage.
3. If the hydraulic passage is closed, the plunger is fixed becoming the rocker arm pivot point because the volume of the engine oil in the high pressure chamber is not changed.
4. The rocker arm presses down the valve.
After valve opening
1. If load is not applied to the plunger, the plunger spring presses up the plunger (maintains valve clearance at 0 mm).
2. Because the capacity of the high pressure chamber (A chamber) increases in Step 1, the check ball is opened and engine oil flows from the reserve chamber (B chamber) to the high pressure chamber (A chamber) to prepare for the next step.
3. The oil in the reserve chamber (B chamber) which is decreased by supplying it to the high pressure chamber (A chamber), is supplied from the oil passage of the cylinder head.
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 ...
Seat Belt Precautions
Seat belts help to decrease the possibility of severe injury during accidents
and sudden stops. Mazda recommends that the driver and all passengers always wear
seat belts.
All of the seat belt retractors are designed to keep the lap/shoulder belts out
of the way when not in use.
The driver ...
Rear Side Marker Light Bulb Removal/Installation
1. Disconnect the negative battery cable..
2. Insert a tape-wrapped flathead screwdriver into the service hole in the position
shown in the figure.
3. Move the flathead screwdriver in the direction of the arrow (1) shown in the
figure, pull out the service hole cover, and detach the serv ...