Purpose, Function
Ensures vacuum required for braking force to compensate for the decrease in intake manifold vacuum applied to the power brake unit caused by the retard intake valve closing.
Construction
The vacuum pump is installed to the rear housing.

For smooth vane rotation, a single-vane type vacuum pump has been adopted which is equipped with an engine oil lubrication passage.

Operation
Because the vacuum pump is directly engaged with the exhaust camshaft, the vane in the vacuum pump rotates together with the exhaust camshaft, and the vacuum chamber is expanded and vacuum is generated.

Vacuum generation mechanism

Vacuum Pump Removal/InstallationBrake Fluid Air Bleeding
CAUTION:
Brake fluid will damage painted surfaces. Be careful not to spill any on
painted surfaces. If it is spilled, wipe it off immediately.
NOTE:
Keep the fluid level in the brake fluid reserve tank at 3/4 full or more
during the air bleeding.
Begin air bleedin ...
Coupling Component Calibration Data Writing
1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following items from the toolbox
of the M-MDS.
Select “Chassis”.
3. Then, select items from the screen menu in the following order.
Select “4WD/AWD”.
Select “Coupling Calibra ...
Quick Release Connector Removal/Installation
WARNING:
Fuel is very flammable liquid. If fuel spills or leaks from the pressurized
fuel system, it will cause serious injury or death and facility breakage. Fuel
can also irritate skin and eyes. To prevent this, always complete the “Fuel
Line Safety Procedure”, while referring ...