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/InstallationFront Side Frame (Partial Cutting) Removal [Panel Replacement]
Symbol Mark
Removal Procedure
1. Drill the 4 locations indicated by (A) shown in the figure, then remove suspension
mounting reinforcement and outer frame reinforcement.
2. Rough cut location indicated by (B) shown in the figure.
3. Drill the 6 locations indicated by (C) shown in the fig ...
Propeller Shaft Removal/Installation
CAUTION:
If the constant velocity joint is bent during propeller shaft removal/installation
or transportation after servicing, the constant velocity joint boot may contact
the metallic cover and the boot may be damaged. Insert a rag between the boot
and the metallic cover before ser ...
Steering Gear And Linkage
Purpose/ Function
The rotational movement input from the intermediate shaft is converted to
a linear movement in the horizontal direction of the steering rack by the rack
and pinion mechanism, and then transmitted to the tires and wheels.
Construction
A size and weight-redu ...